Invasion History
First Non-native North American Tidal Record: 1840First Non-native West Coast Tidal Record: 1968
First Non-native East/Gulf Coast Tidal Record: 1840
General Invasion History:
Littorina littorea is native to Europe from the White Sea, Russia to Gibraltar, but absent (except as failed introductions) from the Mediterranean (Bequaert 1943; Reid 1998). The first collection of living animals on the Atlantic Coast of North America was in 1840 at Pictou, Nova Scotia (Willis 1857, cited by Ganong 1887). Although its status has been disputed (Clarke and Erskine 1963; Wares et al. 2002), general historical records and recent molecular data strongly support its introduction to the Atlantic coast of North America sometime in the last 1,000 years, possibly with multiple introductions (Spjeldnaes and Henningsmoen 1963; Blakeslee et al. 2008; Chapman et al. 2008; Brawley et al. 2009). On the west coast of North America, scattered specimens are known from Newport Bay, California to Puget Sound, Washington but establishment of populations has not been documented (Hanna 1966; Carlton 1969; Carlton 1979; Carlton 1992; Chang et al. 2011).
North American Invasion History:
Invasion History on the West Coast:
Scattered occurrences of Littorina littorea have been noticed from California to Washington since 1937. Early occurrences in Puget Sound, Washington in 1937 (Hanna 1966), and Trinidad Bay, California (Carlton 1969) may have resulted from transplants of Eastern Oysters (Crassostrea virginica). Littorina littorea was found in San Francisco Bay in 1968-70 and 1977, but did not become established (Carlton 1992). Another specimen was found in 1995 (Cohen and Carlton 1995), and occasional occurrences have been noted since (Ruiz et al. unpublished data; Chang et al. 2011). In southern California, a single shell was collected in Newport Bay in 1975 (Carlton 1979). A small patch of abundant snails was found in Anaheim Bay in 2002 and was eradicated, apparently successfully (Chang et al. 2011). Several populations of L. littorea in San Francisco Bay were examined, and found to consist entirely of adult snails, with high diversity of genotypes typical of the East Coast, strongly suggesting that these animals had failed to reproduce and had not undergone the 'genetic bottleneck' of reduced diversity typical of newly established invasive populations (Chang et al. 2011). In 2010, populations of L. littorea were found at two sites in Burrard Inlet, Vancouver, British Columbia (354 animals, all adults). These were similar in size to snails purchased from local markets, but had been resident on the shore for some time and had epibionts including algae and barnacles. The periwinkles apparently have not become established, as none were collected after August 2011 (Harley et al. 2013).
Invasion History on the East Coast:
Living specimens of Littorina littorea were first collected on the East Coast at Pictou, Nova Scotia (Willis 1857, cited by Ganong 1887), but they rapidly became one of the most abundant littoral gastropods on Northeastern shores (Verrill 1880; Ganong 1887). As noted above, there has been some uncertainty about the native/introduced status of L. littorea on the East coast of North America. A single fossil specimen from ~40,000 B.P. is known from Nova Scotia (Wagner 1977, cited by Reid 1996). Specimens of L. littorea (dating back to ~1000-1300 B.C.) have been found in Nova Scotia and Newfoundland in Indian and Norse archaeological sites (Clarke 1961; Clarke and Erskine 1963; Spjeldnaes and Henningsmoen 1963). This has been taken to infer the presence of native populations of L. littorea in eastern Canada (Clarke and Erskine 1963) or the introduction of this species by Viking explorers (Spjeldnaes and Henningsmoen 1963). One recent molecular analysis (nuclear and mitochondrial DNA) suggested that populations of Littorina littorea on the Atlantic coast of North America are native (Wares et al. 2002). It has been argued that oceanographic conditions prevented the spread of L. littorea until their rediscovery around 1840 (Clarke and Erskine 1963; Wares et al. 2002). However, the combination of historical, paleontological, and genetic evidence supports introduced status for L. littorea (Chapman et al. 2007).
A more comprehensive genetic analysis by Blakeslee et al. (2008), incorporating molecular analysis with a greater number of sampled haplotypes, parasitological studies, and more sophisticated statistical analysis strongly supports an introduced status for L. littorea in North America and for its common trematode parasite, Cryptocotyle lingua. Other evidence for its introduced status includes: the absence of L. littorea shells in natural deposits, the lack of early collections of a relatively large (and edible) snail, and the improbability of a sudden range expansion, from a small range in Atlantic Canada to ~1,000 km of coastline, in about 50 years (Chapman et al. 2007). The genetic diversity of L. littorea suggests multiple introductions, possibly as early as Viking times, based on estimates using genetic divergence and assumed mutation rates (400 to 1,000 years ago), but with wide confidence intervals. Brawley et al. (2009) examined more closely historical shipping records at Pictou, Nova Scotia, a major port for immigrants from Great Britain and Ireland, and compared genotypes of Pictou and British Isles populations. They estimated divergence times with a lower confidence limit of 192-384 years, roughly comparable with a late 18th-early 19th century introduction suggested by shipping records (Brawley et al. 2009).
From the first collection at Pictou, Nova Scotia in 1840, on the southern Gulf of St. Lawrence, the known range of L. littorea expanded rapidly to the north and south. In 1855, it was collected in Bathurst. New Brunswick, on the Bay of Chaleur (Morse 1880, cited by Bequaert 1943), and in 1882 in Lake Melville, Labrador (USNM 34326, US National Museum of Natural History, 54°N; 60°W, collected by Stearns). This appears to be the current northern limit for this species (Bequaert 1943; Reid 1996). In 1857, it was collected in Halifax, on the Atlantic Coast of Nova Scotia, and in the Bay of Fundy in 1861 (Ganong 1887). By 1873, it occurred at Saco, Maine 'in abundance', and reached Provincetown, Massachusetts by 1870, at which time it was 'very rare'. By 1875, it was abundant there (Bequaert 1943; Dexter; 1961).
To the south of Cape Cod, in 1875 L. littorea was rare at Woods Hole, Massachusetts, but abundant by 1876 (Ganong 1887). Its spread to the south was rapid: New Haven, Connecticut in 1879 (Bequaert 1943); Newport, Rhode Island in 1880 (Ganong 1887); Staten Island, New York in 1888 (Bequaert 1943); Atlantic City, New Jersey in 1892 (Bequaert 1943). However, the range expansion slowed down sharply, south of Atlantic City. Littorina littorea reached Cape May, New Jersey by 1928 (Bequaert 1943) and Cape Henlopen, Delaware by 1970 (Kraueter 1974). In 1959, Wells (1965) collected L. littorea in the Maryland region, stating it was rare 'attached to the rocks of a jetty at West Ocean City, directly opposite Ocean City Inlet'. At Assateague Island, Maryland-Virginia in 1988-1989 (exact site not given), it was found 'only on rock jetties and wooden groins' (Counts and Bashore 1991). It was reported from Chincoteague, Virginia in 1971 (Kraueter 1974) and later at Wachapreague (date not given) (Vermeij 1982b).
Invasion History Elsewhere in the World:
In the Mediterranean, Littorina littorea has been collected in Italy, in the Lagoon of Faro, Sicily in 1978 and in Livorno, on the Tyrrhenian Sea, but these populations were extinct by 1988 (Johanesson 1988; Zenetos et al. 2004; Crocetta 2012).
Description
The shell of Littorina littorea is solid, heavy and turban shaped, topped with an onion-shaped spire. It is dextrally coiled, with 6 or 7 whorls, and lacks an umbilicus. The shell surface has shallow sutures, resulting in flat-sided whorls on the spire, sculpted by low, narrow ribs and fine spiral lines. The color varies from uniform cream to brown, black, orange, or red, but usually pale brown with 8-25 narrow black or brown lines. The columella is white and the outer edge of the aperture is brown or with brown lines. The interior of the aperture is brown. The shell commonly reaches about 31 mm in length, but the maximum is 53 mm. Description from: Bequaert 1943; Morris 1975; Gosner 1978; and Reid 1996.
This species lays its eggs in distinctive transparent, planktonic, egg capsules, in the form of flat disks (0.3 - 1.1 mm diameter) (Reid 1998). The planktotrophic veligers are distinguished by a prominent red or black pigmented spot on the anterior corner of each lobe of the velum. The veligers reach about 0.6 mm before settling (Newell and Newell 1997).
Taxonomy
Taxonomic Tree
Kingdom: | Animalia | |
Phylum: | Mollusca | |
Class: | Gastropoda | |
Order: | Neotaenioglossa | |
Family: | Littorinidae | |
Genus: | Littorina | |
Species: | littorea |
Synonyms
Potentially Misidentified Species
None
Littoraria irrorata
None
Littorina saxatilis
None
Ecology
General:
Littorina littorea occurs on rocky coasts, but also on mud, sand and marsh habitats in some parts of its range. Sexes are separate, with males slightly larger than females, and fertilization is internal. This snail reaches a mature size in one year and has a life span of at least 5 years. Aquarium specimens are reported to have lived 10 years or more (Clay 1961). The eggs are laid in water and are contained in gelatinous capsules, in the shape of a shallow dome, surrounded by a flat brim, each containing 1-9 (but usually 1-3) eggs. The spawning season varies with latitude, from summer in the Barents Sea to late winter-spring or early summer in Denmark, England, and the Netherlands (Clay 1961; Reid 1996). In New Brunswick, spawning occurs in April to November (Chase and Thomas 1995a), while in Narragansett Bay, Rhode Island egg capsules and larvae occurred year-round, but were rare in July-August (Fofonoff, unpublished data). Females in New Brunswick released an estimated 50,000 to 200,000 embryos per season. The egg capsules are usually suspended in the plankton and can be abundant in nearshore waters. The eggs take about 6 days to hatch into planktotrophic veligers, which remain in the plankton for 2-4 weeks (Fretter and Graham 1962). The larvae settle with shells about 0.275 mm in length and 0.375-390 mm in diameter (Reid 1996).
Juveniles and adults of the Common Periwinkle inhabit the middle and upper intertidal zone, primarily of rocky shores, but also extending into mudflats and marshes. On rocky shores, their distribution is often associated with rockweeds (Fucaceae) and is affected by wave action and food availability (Clay 1961; Reid 1996). The preference of L. littorea for the mid- and upper intertidal zone is related to the presence of more effective predators in the subtidal zone. Growth of caged juvenile snails in the Gulf of Maine, was greater in the subtidal and lower intertidal, but a subtidal predator, the Jonah Crab (Cancer borealis), was a more effective predator on larger snails than the intertidal Green Crab (Carcinus maenas) (Perez et al. 2009). However, some specimens of L. littorea have been found at maximum depths ranging from 15 m to 60 m, especially in more northern locations (Reid 1996). On soft sediments, in sheltered areas, periwinkles are usually associated with scattered stones, shells, mussel beds, or wood, which provide sites of attachment. The snails leave these refuges to make feeding excursions on the sediment surface (Reid 1996).
As an inhabitant of the temperate intertidal zone, the Common Periwinkle is tolerant of a wide range of temperature and salinity. It can tolerate temperatures as high as 41°C for up to 48 h (Fraenkel 1960), but an average summer temperature of 21°C seems to mark the southern limit for this species (Wells 1965). It can also tolerate short-term exposure to fresh water from rain and runoff, but reported lower limits for long-term survival range from 9.5 to 16 PSU (Todd 1964; Remane and Schleiper 1971; Reid 1996). Todd (1964) found a strong effect of temperature on salinity tolerance, with animals surviving well at 11 PSU at 5°C, but dying at salinities below 16 PSU at 15°C. The lower salinity limit for reproduction was about 15 PSU, in Kiel Bay, Germany, but was around 20 PSU in other European locations (Hayes 1929, cited by Remane and Schlieper 1971).
Littorina littorea is an omnivorous grazer, feeding on a wide range of algae and on small attached organisms, especially opportunistic algae, such as Ulva, Cladophora and Ectocarpus, and early settlement stages (germlings) of more robust seaweeds such as Fucus (Lubchenco 1978; Lubchenco and Menge 1978; Lubchenco 1983; Bertness et al. 1984; Reid 1996; Bertness et al. 2004). On soft sediment, L. littorea grazes benthic microalgae on the sediment surface and also grazes on the leaves and rhizomes of Spartina alterniflora (Smooth Cordgrass), the dominant marsh grass in northeastern salt marshes (Reid 1996; Bertness 1984; Tyrell et al. 2008). This periwinkle is basically a herbivore, but does ingest small animals, such as newly attached barnacles and mussels, and the egg capsules of other snails, such as those of Ilyanassa obsoleta. Whether it digests these organisms is unknown (Brenchley 1982; Brenchley and Carlton 1983; Reid 1996).
As a very abundant intertidal organism on the coast of Northeastern North America, L. littorea is an important component of coastal food webs. It is a major food item for crabs, fishes, and shorebirds, and also a major final and intermediate host of numerous parasites. Among frequent predators in East Coast waters are Green Crabs (Carcinus maenas), Asian Shore Crabs (Hemigrapsus sanguineus), Blue Crabs (Callinectes sapidus), Jonah Crabs (Cancer borealis), Dogwinkles (Nucella lapillis), Oyster Drills (Urosalpinx cinereus), Mummichogs (Fundulus heteroclitus), sandpipers (Calidris spp.), gulls (Larus spp.), and crows (Corvus spp.) (Dexter 1947; Peterson 1979; Gerard et al. 1999; Trussell et al. 2004; Ellis et al. 2007; Byers et al. 2008; Perez et al. 2009).
The Common Periwinkle hosts a variety of parasites. Eleven species of digenean trematodes are known from Europe, while only six have been found in Eastern North American populations (Blakeslee and Byers 2008). The most abundant of these, Cryptocotyle lingua, was introduced to North American waters, probably with L. littorea, based on genetic data (Blakeslee et al. 2008). The rediae (first parasitic stage) of C. lingua occur at an average prevalence of 9-10% in North American L. littorea populations, but can be much more abundant locally. Prevalence at New England intertidal sites was strongly influenced by the abundance of Herring Gulls (Larus argentatus) the final host of the parasite (Byers et al. 2008). Heavy infection with these parasites can damage the snail's digestive organs and greatly reduce their grazing and reproductive rates (Blakeslee and Byers 2008). In addition to obvious parasites, the bodies and shells of introduced L. littorina (sampled in Nova Scotia) host a wide variety of endosymbionts (at least 7 phyla), whose exact identity, native status, and impacts on the snail's biology are unknown (Buckland-Nicks et al. 2013).
Food:
benthic algae; detritus; egg capsules
Consumers:
crabs, fishes, shorebirds, humans
Competitors:
Trophic Status:
Herbivore
HerbHabitats
General Habitat | Unstructured Bottom | None |
General Habitat | Marinas & Docks | None |
General Habitat | Rocky | None |
General Habitat | Salt-brackish marsh | None |
Tidal Range | Low Intertidal | None |
Tidal Range | Mid Intertidal | None |
Vertical Habitat | Epibenthic | None |
Tolerances and Life History Parameters
Minimum Temperature (ºC) | 0.1 | Field Data- Denmark (Clay 1961) |
Maximum Temperature (ºC) | 41 | Survival - Lethal temperature from 48 hour experiment. (Fraenkel 1960). There is a relationship between lethal temperature and the level of shore inhabited by snail- Periwinkles from high tide levels have higher lethal temperatures than those from low tide level; also varies seasonally (Clay 1961). Although this snail tolerates very high short-term temperatures, such as might be found in tide pools, an average summer temperature of 21 C seems to mark the southern limit for this species (Wells 1965). |
Minimum Salinity (‰) | 9.5 | Field: Remane and Schleiper 1971; Reid 1996. Todd (1964) found that survival at low salinities varied with temperature, with lower limits at 11 PSU at 5 C, but 16 at 15 C. |
Maximum Salinity (‰) | 48 | Experimental (Todd 1964) |
Minimum Reproductive Salinity | 15 | Field, Kiel Bay, Germany. However, 20 PSU is a more common limit for populations outside the Baltic (Hayes 1929, cited by Remane and Schleiper 1971) |
Minimum Duration | 20 | Planktonic egg (6 days, typical) + Larval Period (Fretter and Graham 1962) |
Maximum Duration | 34 | Planktonic egg (6 days, , typical) + Larval Period (Fretter and Graham 1962) |
Minimum Length (mm) | 10.6 | Minimum size at maturation (Reid 1996) |
Maximum Length (mm) | 53 | Maximum reported size, but a more usual maximum is ~31 mm (Bequaert 1943; Morris 1975; Gosner 1978; Reid 1996) |
Broad Temperature Range | None | Cold-Temperate |
Broad Salinity Range | None | Mesohaline-Euhaline |
General Impacts
Littorina littorea is a common food item in Europe, but is rarely eaten in the US. However, it has had major impacts on food webs, parasite communities, and even on the physical structure of coastlines in Northeastern North America. It is often one of the most abundant grazers in rocky intertidal areas, where it can control the abundance and composition of seaweeds. It is also abundant in marshes, mudflats, and cobble beaches where its grazing can remove vegetation and result in the erosion of sediment, converting soft-bottom shores to rocky habitats (Clay 1961; Bertness 1984; Lubchenco 1986). It is a competitor with native snails and is prey for introduced crabs and many native predators, including carnivorous snails, crabs, fishes, and birds (Dexter 1947; Brenchley and Carlton 1983). It is also a host to many parasites, including digenean trematodes which infect fishes and birds in later stages of their life cycle. One of these parasites, Cryptocotyle lingua, was introduced to North America along with L. littorea (Stunkard 1930; Blakeslee and Byers 2008; Blakeslee et al. 2008).Economic Impacts
Fisheries: Littorina littorea is a common food item in European cultures, but is rarely part of American cuisine. However, it is frequently eaten by European, Asian, and African immigrants. In the British Isles, 'winkles' are eaten raw or roasted, and the animal extracted from the shell with a bent pin (Clay 1961). Cohen (2012) found L. littorea for sale at 6 of 11 Asian seafood markets, which were visited in San Francisco and Los Angeles. We have no estimate of the economic value of this snail's harvest on North American shores.
Ecological Impacts
Competition: Littorina littorea competes with native shore molluscs for food and living space on Northwest Atlantic shores. Manipulative experiments show that L. littorea can decrease the growth rate of the native L. saxatilis (Rock Periwinkle) and Notoacmea testudinalis (Tortoiseshell Limpet). Field observations and experiments indicate that the Eastern Mudsnail (Ilyanassa obsoleta) emigrates to avoid large concentrations of L. littorea (Brenchley and Carlton 1983). After the Littorina invasion, I. obsoleta abandoned pilings and cobble beaches, and became rare in peat habitats of marshes, habitats where it was formerly abundant. It is now largely restricted to soft-mud habitats not used by L. littorea (Brenchley and Carlton 1983). One of the mechanisms of this competition is interference – L. littorea will climb onto the shells of I. obsoleta and graze algae growing on the shell, causing the mudsnail to twist to dislodge the periwinkle, interfering with the mudsnail's feeding (Brenchley and Carlton 1983).
Herbivory: Littorina littorea is now the most abundant large invertebrate herbivore on the Northwest Atlantic Coast from the Gulf of St. Lawrence to New Jersey. Addition and removal experiments suggest a strong impact on ephemeral green algae (Ulva spp.) in the intertidal, but it also grazes germlings of larger canopy-forming algae, such as Chondrus crispus and Fucus spp. (Lubchenco 1978; Lubchenco and Menge 1978; Lubchenko 1980; Lubchenco 1983; Petraitis 1983; Bertness 1984; Lubchenco 1986). Impacts of L. littorea were greatest at sheltered sites, since L. littorea was rare or absent at sites with heavy wave action (Lubchenco 1978). Littorina littorea also grazes the leaves and rhizomes of the marsh grass Spartina alterniflora, reducing its growth and reproduction on a cobble beach in Rhode Island (Bertness 1984). In a marsh environment in Maine, grazing of L. littorea on S. alterniflora affected the grass' growth only in stressful habitats (poor drainage, long tidal flooding) but did not affect biomass in more optimal habitats. Grazing by Littorina littorea may control the recruitment of introduced Codium fragile ssp. fragile in the upper intertidal, where this alga is also stressed by ultraviolet, freezing, and desiccation. Grazing has less effect in the lower intertidal, where Codium suffers less damage and grows at a faster rate (Scheibling et al. 2008).
Habitat Change: Grazing by Littorina littorea in the rocky intertidal helps to benefit canopy-forming seaweeds such as Chondrus crispus and Fucus spp. by removing ephemeral algal competitors. The canopy-forming seaweeds provide shelter for many species of intertidal invertebrates (Lubchenco and Menge 1978; Lubchenco 1980; Lubchenco 1983; Petratis 1983; Bertness 1984). Grazing by L. littorea had different effects on the Rock Barnacle Semibalanus balanoides (in Long Island sound NY) depending on snail density. Moderate densities favored barnacle settlement by removing algae, but high densities of snails removed large numbers of barnacle cyprids (Petraitis 1983).
Removal experiments on a cobble beach in Mount Hope Bay, Rhode Island indicate that herbivory by Littorina littorea has major effects on habitat structure by removing algae and Spartina alterniflora (Smooth Cordgrass), preventing the accumulation of sediment and removing habitat for soft-bottom fauna (Bertness 1984). Bertness suggests that the Littorina invasion may have resulted in the reduction of marsh habitat and other soft-bottom habitats (Bertness 1984). In marsh environments in the Wells National Estuarine Research Reserve, Maine removal experiments showed that in stressed sites (long inundation, poor drainage), L. littorea reduced the growth of S. alterniflora, but had no effect at a benign site (Tyrrell et al. 2008). Grazing by this introduced snail could reduce the biomass of Spartina at stressed sites, increasing rates of erosion, particularly as a response to sea-level rise (Tyrrell et al. 2008). The extent and magnitude of L. littorea impacts on Spartina may vary among habitats.
Predation: Littorina littorea is a major predator on the egg capsules of I. obsoleta (Eastern Mudsnail) in Barnstable Harbor, Massachusetts (Brenchley 1982). The effect of this predation on the abundance of I. obsoleta is not clear.
Food/Prey: The high biomass of L. littorea at many sites may be benefiting two invading crab species, the Green Crab (Carcinus maenas) and Asian Shore Crab (Hemigrapsus sanguineus), as Littorina littorea is a frequent food item for both species (H. s., Gerard et al. 1999; C. m., Vermeij 1982; Ropes 1989). A wide range of native predators feed on the Common Periwinkle, including predatory snails, crabs, fishes, shorebirds, gulls, and crows (Dexter 1947; Peterson 1979; Ellis et al. 2007).
Parasite/Predator Vector: Littorina littorea has served as a probable vector for one parasite introduced from the coast of Europe, the digenean trematode, Cryptocotyle lingua. This parasite infects Littorina spp. from eggs scattered in the feces of birds and mammals and then develops into the next stage, rediae, which consume some of the snail's tissues, before developing into swimming cercariae, which leave the snail and infect the tissues of fishes, as metacercariae. When the fishes are eaten by birds or mammals, the trematodes mature and shed eggs (Stunkard 1930; Sindermann and Farrin 1962). Genetic analyses of L. littorea and C. lingua from many sites on both sides of the Atlantic, indicates that both the snail and trematode have undergone a similar reduction in genetic diversity and were introduced at roughly the same time (Blakeslee and Byers 2008; Blakeslee et al. 2008). The early stages of the trematode also occur in the native periwinkles L. obtusata and L. saxatilis (Blakeslee and Byers 2008; Blakeslee et al. 2008). In fishes, the cercariae can cause unpleasant pigment spots in fish flesh, while heavy infections can kill young Atlantic Herring (Clupea harengus) (Sindermann and Farrin 1962). In birds ('terns', probably Common Terns, Sterna sterna) and dogs fed infected fish, localized intestinal damage occurred, followed by the development of immunity to infection (Willey and Stunkard 1942). The introduction of L. littorea thus appears to have introduced a parasite that has infected three trophic levels of the Northwest Atlantic food web.
Regional Distribution Map
Bioregion | Region Name | Year | Invasion Status | Population Status |
---|---|---|---|---|
NEP-VI | Pt. Conception to Southern Baja California | 2002 | Non-native | Failed |
P050 | San Pedro Bay | 2002 | Non-native | Failed |
P093 | _CDA_P093 (San Pablo Bay) | 1976 | Non-native | Failed |
P040 | Newport Bay | 1975 | Non-native | Failed |
P090 | San Francisco Bay | 1968 | Non-native | Unknown |
NEP-V | Northern California to Mid Channel Islands | 1968 | Non-native | Unknown |
P135 | _CDA_P135 (Mad-Redwood) | 1943 | Non-native | Failed |
NEP-IV | Puget Sound to Northern California | 1943 | Non-native | Failed |
Occurrence Map
OCC_ID | Author | Year | Date | Locality | Status | Latitude | Longitude |
---|---|---|---|---|---|---|---|
699470 | Carlton 1979 | 1970 | Near Bay Farm Island Bridge | Non-native | 37.7490 | -122.2353 | |
699473 | Carlton 1979 | 1969 | Slough off Bay Farm Island Bridge | Non-native | 37.7320 | -122.2095 | |
701130 | Cohen and Carlton 1995 | 1995 | San Francisco Bay | Non-native | 37.8494 | -122.3681 | |
703165 | Carlton 1979 | 1968 | Southeast shore, Alameda Island | Non-native | 37.7539 | -122.2516 | |
703173 | Carlton 1979 | 1969 | South Alameda Island | Non-native | 37.7585 | -122.2632 | |
704072 | Carlton 1979 | 1977 | Selby | Non-native | 38.0590 | -122.2414 | |
704073 | Carlton 1979 | 1976 | Selby | Non-native | 38.0590 | -122.2414 | |
714605 | Carlton 1969 | 1968 | 1968-07-11 | Near foot of Ashby Avenue, Berkeley | Non-native | 37.8516 | -122.3004 |
714608 | California Academy of Sciences Invertebrate Zoology Collection Database 2015 | 1940 | Upper Newport Bay | Non-native | 33.6456 | -117.8870 | |
714740 | Carlton 1969 | 1942 | 1942-07-28 | Trinidad Bay | Non-native | 41.0544 | -124.1397 |
714873 | Paul Fofonoff, personal observation | 2005 | Middle Harbor Park | Non-native | 37.8033 | -122.3300 | |
714875 | Chang et al. 2011 | 2002 | 2002-09-18 | Dumbarton Pier | Non-native | 37.5005 | -122.1266 |
714876 | Andrew Chang, personal communication 2007 | 2007 | San Francisco Bay | Non-native | 37.5586 | -122.2711 | |
714877 | Chang et al. 2011 | 2007 | Ashby Spit Park (Point Emery) , Emeryville | Non-native | 37.8391 | -122.2978 | |
714878 | Andrew Chang, personal communication | 2002 | Upper Newport Bay, on west side of Pacific Coast Highway bridge | Non-native | 33.7317 | -118.0873 | |
760282 | Carlton 1979 | 1966 | Newport Beach, by jetty | Non-native | 33.6075 | -117.9292 |
References
Abbott, R. Tucker (1974) American Seashells, Van Nostrand Reinhold, New York. Pp. <missing location>Academy of Natural Sciences of Philadelphia 2002-2024a Malacology Collection Search. <missing URL>
Alexander, Robert C. (1947) Littorina littorea on the New Jersey coast, The Nautilus 60(3): 73-76
Allee, W. C. (1923) Studies in marine ecology: I. The distribution of common littoral invertebrates of the Woods Hole region, Biological Bulletin 44(4): 167-191
Balch, Francis Noyes (1899) List of marine mollusca of Coldspring Harbor, Long Island, with descriptions of one new genus and two new species of nudibranchs, Proceedings of the Boston Society of Natural History 29(7): 133-163
Baldwin, Andy; Leason, Diane (2016) Potential Ecological impacts of Emerald Ash Borer on Maryland's Eastern Shore, In: None(Eds.) None. , <missing place>. Pp. <missing location>
Bequaert, Joseph C. (1943) The genus Littorina in the Western Atlantic, Johnsonia 1(7): 1-27
Berger, Edward (1977) Gene-enzyme variation in three sympatric species of Littorina. II. The Roscoff population, with a note on the origin of North American L. littorea, The Biological Bulletin 153(2): 255-264
Berman, Jody; Carlton, James T. (1991) Marine invasion processes: Interactions between native and introduced marsh snails, Journal of Experimental Marine Biology and Ecology 150(2): 267-281
Bertness, Mark D. (1984) Habitat and community modification by an introduced herbivorous snail, Ecology 65(2): 370-381
Bertness, Mark D.; Trussell, Geoffrey C.; Ewanchuk, Patrick J.; Silliman, Brian R. (2002) Do alternate stable community states exist in the Gulf of Maine rocky intertidal zone?, Ecology 83(12): 3434-3448
Bertness, Mark D.; Trussell, Geoffrey C.; Ewanchuk, Patrick J.; Silliman, Brian R.; Crain, Caitlin Mullan (2004) Consumer-controlled community states on Gulf of Maine rocky shores, Ecology 85(5): 1321-1331
Blackstone, N. W., Joslyn, A. R. (1984) Utilization and preference for the introduced gastropod Littorina littorea (L.) by the hermit crab Pagurus longicarpus (Say) at Guilford, Connecticut, Journal of Experimental Marine Biology and Ecology 80: 1-9
Blakeslee, April M. H.; Byers, James E. (2008) Using parasites to inform ecological history: comparisons among three congeneric marine snails., Ecology 89(4): 1068-1078
Blakeslee, April M. H.; Byers, James E.; Lesser, Michael P. (2008) Solving cryptogenic histories using host and parasite molecular genetics: the resolution of Littorina littorea’s North American origin., Molecular Ecology 17: 3684-3696
Blakeslee, April M. H.; Miller, A. Whitman; Ruiz, Gregory M.; Kerstin Johannesson · Carl André ·Johannsson, Kerstin;· André, Carl; Panova, Marina (2021) Population structure and phylogeography of two North Atlantic Littorina species with contrasting larval development, Marine Biology 168: <missing location>
Bousfield, E. L. (1958) Littoral marine arthropods and mollusks collected in western Nova Scotia, 1956, Proceedings of the Nova Scotian Institute of Science 24: 303-325
Bousfield, E. L. (1960) Canadian Atlantic Sea Shells, In: (Eds.) . , Ottawa. Pp. <missing location>
Brawley, Susan H. and 7 authors (2009) Historical invasions of the intertidal zone of Atlantic North America associated with distinctive patterns of trade and emigration, Proceedings of the National Academy of Sciences 106(20): 8239-8244
Brenchley, G. A. (1982) Predation on encapsulated larvae by adults: Effects of introduced species on the gastropod Ilyanassa obsoleta, Marine Ecology Progress Series 9(255-262): <missing location>
Brenchley, G. A. (1982) The current status of the 100-year war between native 'mud' snails, Ilyanassa obsoleta, and a dominant competitor and predator, the European periwinkle, Littorina littorea, Malacological Review 15(1-2): 146
Brenchley, G.A.; Carlton, J.T. (1983) Competitive displacement of native mud snails by introduced periwinkles in the New England intertidal zone, Biological Bulletin 165: 543-558
Buckland-Nicks, John; Chisholm, Sarah Ann; Gibson, Glenys (2013) The living community inside the common periwinkle, Littorina littorea, Canadian Journal of Zoology 91: 293-301
Bumpus, Hermon C. (1898) The variations and mutations of the introduced Littorina, Zoological Bulletin 1(5): 247-259
Byers, James E.; Blakeslee, April M. H.; Linder, Ernst ; Cooper, Andrew B.; Maguire, Timothy J. (2008) Controls of spatial variation in the prevalence of trematode parasites infecting a marine snail., Ecology 89(2): 439-451
California Academy of Sciences 2005-2015 Invertebrate Zoology Collection Database. <missing URL>
Carlton, James T. (1969) Littorina littorea in California (San Francisco and Trinidad Bays), The Veliger 11: 283-284
Carlton, James T. (1979) History, biogeography, and ecology of the introduced marine and estuarine invertebrates of the Pacific Coast of North America., Ph.D. dissertation, University of California, Davis. Pp. 1-904
Carlton, James T.; Blakeslee, April M. H.; Fowler, Amy E. (2022) Accidental associates are not symbionts: the absence of a non?parasitic endosymbiotic community inside the common periwinkle Littorina littorea (Mollusca: Gastropoda, None 167(97): Published online
https://doi.org/10.1007/s00227-020-03694-x
Carman, Mary R.; Allen, Hannah M.; Tyrrell, Megan C. (2009) Limited value of the common periwinkle snail Littorina littorea as a biological control for the invasive tunicate Didemnum vexillum., Aquatic Invasions 4(1): 291-294
Chang, Andrew L.; Blakeslee, April M. H.; Miller, A. Whitman; Ruiz, Gregory M. (2011) Establishment failure in biological invasions: a case history of Littorina littorea in California, USA, PLOS ONE 6(1): e16035
Chapman, John W.; Blakeslee, April M. H.; Carlton, James T.; Bellinger, M. Renee (2008) Parsimony dictates a human introduction: on the use of genetic and other data to distinguish between the natural and human-mediated invasion of the European snail Littorina littorea in North America., Biological Invasions 10: 131-133
Chase, M. E.; Thomas, M. L. H. (1995b) The effect of the rate and onset of temperature increase on spawning of the periwinkle, Littorina littorea (L.), Journal of Experimental Marine Biology and Ecology 186: 277-287
Chase, M.E.; Thomas, M. L. (1995a) Evidence for double recruitment in the common periwinkle, Littorina littorea (Linnaeus, 1758), on Pendleton Island, New Brunswick, Canada., Journal of Shellfish Research 14(1): 153-158
Clarke, A. H., Jr.; Erskine, J. S. (1961) Pre-Columbian Littorina littorea in Nova Scotia, Science 134(3476): 393-394
Clay, E. (1961) Literature survey of the common fauna of estuaries. 9. Littorina littorea (Linnaeus), Littorina littoralis (Linnaeus), Littorina saxatilis (Olive), Littorina neritoides (Linnaeus), In: (Eds.) . , Brixham Laboratory. Pp. <missing location>
Clench, W.J. (1930) Litorina littorea Linn., The Nautilus 43: 105
Cohen, Andrew N. (2012) <missing title>, California Ocean Science Trust, Sacramento CA. Pp. <missing location>
Cohen, Andrew N.; Carlton, James T. (1995) Nonindigenous aquatic species in a United States estuary: a case study of the biological invasions of the San Francisco Bay and Delta, U.S. Fish and Wildlife Service and National Sea Grant College Program (Connecticut Sea Grant), Washington DC, Silver Spring MD.. Pp. <missing location>
Counts, Clement L. III; Bashore, Terry L. (1991) Mollusca of Assateague Island, Maryland and Virginia: A reexamination after seventy-five years., Veliger 34(2): 214-221
Crocetta, Fabio (2012) Marine alien Mollusca in Italy: a critical review and state of the knowledge, Journal of the Marine Biological Association of the United Kingdom 92(6): 1357-1365
Cunningham, C. W. (2008) How to use genetic data to distinguish between natural and human-mediated introduction of Littorina littorea to north america, Biological Invasions 10: 1-6
Dexter, Ralph W. (1945) Zonation of the intertidal marine mollusks at Cape Ann, Massachusetts, The Nautilus 58(4): 135-142
Dexter, Ralph W. (1947) The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecological Monographs 17: 261-294
Dexter, Ralph W. (1961) Early records of Littorina littorea from the coast of Massachusetts, The Nautilus 74(3): 120-121
Dolin, Eric (1980) Annotated list of the gastropoda of Long Island Sound, Of Sea and Shore 11(3): 167-172
Dudley, Robert (1980) Crab crushing of periwinkle shells, Littorina littorea, from two adjacent geographical provinces, Nautilus 94(3): 108-112
Eastwood, Meg M.; Donahue, Megan J.; Fowler, Amy E. (2007) Reconstructing past biological invasions: niche shifts in response to invasive predators and competitors., Biological Invasions 9: 397-407
Edgell, Timothy C.; Rochette, Remy (2008) Differential snail predation by an exotic crab and the geography of shell-claw covariance in the Northwest Atlantic., Evolution 62(5): 1216-1228
Ellis, Julie C.; Shulman, Myra J.; Wood, Megan; Witman, Jon D.; Lozyniak, Sara (2007) Regulation of intertidal food webs by avian predators on New England rocky shores, Ecology 88(4): 853-863
Fisher, Jonathan A. D.; Rhile, Erika C.; Harrison, Liud; Petraitis, Peter S. (2009) An intertidal snail shows a dramatic size increase over the past century, Proceedings of the National Academy of Sciences 106(13): 5209-5212
Fraenkel, G. (1960) Lethal high temperatures for three marine invertebrates: Limulus polyphemus, Littorina littorea and Pagurus longicarpus, Oikos 11(2): 171-182
Fretter, Vera; Graham, Alastair (1962) British prosobranch molluscs: their functional anatomy and ecology, In: (Eds.) . , London. Pp. <missing location>
Fretter, Vera; Pilkington, Margaret (1970) Prosobranchia: Veliger larvae of Taenioglossa and Stenoglossa, ICES Zooplankton Identification Sheets 129-132: 1-26
Ganong, W.F. (1887) Is Littorina littorea introduced or indigenous?, The American Naturalist 20: 931-940
Geller, Jonathan B.; Darling, John A.; Carlton, James T. (2010) Genetic perspectives on marine biological invasions, Annual Review of Marine Science 2: 367-393
Gerard, V. A.; Cerrato, R. M.; Larson, A. A. (1999) Potential effects of a western Pacific grapsid crab on intertidal communities of the northwestern Atlantic Ocean., Biological Invasions 1: 353-361
Gosner, Kenneth L. (1978) A field guide to the Atlantic seashore., In: (Eds.) . , Boston. Pp. <missing location>
Gould, Augustus A. (1870) <missing title>, Wright and Potter, State Printers, Boston. Pp. <missing location>
Gulliksen, B.; Palerud, R.; Brattegard, T.; Sneli, J. (eds) (1999) <missing title>, 1999-4 Directorate for Nature Management, Norway, Oslo. Pp. 1-149
Hadlock, Robin P. (1980) Alarm response of the intertidal snail Littorina littorea (L.) to predation by the crab Carcinus maenas (L.), Biological Bulletin 159: 269-279
Hanna, G. Dallas (1966) Introduced mollusks of Western North America, Occasional Papers of the California Academy of Sciences 48: <missing location>
Hardwick-Witman, Morgan; Mathieson, Arthur C. (1983) Intertidal macroalgae and macroinvertebrates: seasonal and spatial abundance patterns along an estuarine gradient., Estuarine Coastal and Shelf Science 16: 113-129
Harley, Christopher D. G. and 10 authors (2013) The introduction of Littorina littorea to British Columbia, Canada: potential impacts and the importance of biotic resistance by native predators, Marine Biology 160: 1529-1541
Harvard Museum of Comparative Zoology 2008-2021 Museum of Comparative Zoology Collections database- Malacology Collection. <missing URL>
Hayes, F. Ronald (1929) Contributions to the study of marine gastropods III. Development, growth and behaviour of Littorina, Contributions to Canadian Biology and Fisheries 4: 413-430
Jenkins, Stuart R. and 9 authors (2008) Comparative ecology of North Atlantic shores: do differences in players matter for process?, Ecology 89(11): S3-S23
Johannesson, K. (1988) The paradox of Rockall: why is a brooding gastropod (Littorina saxatilis) more widespread than one having a planktonic larval dispersal stage (L. littorea)?, Marine Biology 99: 507-513
Johnson, Charles W. (1915) Fauna of New England. 13. List of the Mollusca, Occasional Papers of the Boston Society of Natural History 7: 1-223
Johnson, Charles W. (1934) List of marine mollusca of the Atlantic coast from Labrador to Texas, Proceedings of the Boston Society of Natural History 40(1): 1-204
Kraueter, J. N. (1974) Offshore currents, larval transport, and establishment of southern populations of Littorina littorea along the U. S. Atlantic Coast., Thalassia Jugoslavica 10(1/2): 159-170
Larsen, Peter Foster (2012) The macroinvertebrate fauna of rockweed (Ascophyllum nodosum) dominated low-energy rocky shores of the northern Gulf of Maine, Journal of Coastal Research 28(1): 36-42
Leathem, Wayne, Maurer, Don (1975) The distribution and ecology of common marine and estuarine gastropods in the Delaware Bay area, Nautilus 89(3): 73-79
Lubchenco, J. (1978) Plant species diversity in a marine intertidal community: importance of herbivore food preference and algal competitive abilities., The American Naturalist 112: 23-39
Lubchenco, J. (1983) Littorina and Fucus: effects of herbivores, substratum heterogeneity, and plant escapes during succession., Ecology 64: 1116-1123
Lubchenco, Jane (1980) Algal zonation in the New England rocky intertidal community: an experimental analysis, Ecology 61(2): 333-344
Lubchenco, Jane (1986) Relative importance of competition and predation: early colonization by seaweeds in New England, In: Diamond, J., Case, T. J. (Eds)(Eds.) Community Ecology.. , New York. Pp. 537-555
Lubchenco, Jane, Menge, Bruce A. (1978) Community development and persistence in a low rocky intertidal zone, Ecological Monographs 59: 67-94
Malpass, Wendy, Geist, Margaret A. (1996) Chapter III: Habitats and communities of the Waquoit Bay reserve., In: Geist, Margaret A.(Eds.) Waquoit Bay National Estuarine Research Reserve. , Massachusetts. Pp. <missing location>
Miller, Richard (1969) Ascophyllum nodosum: A source of exotic invertebrates introduced into West Coast near-shore marine waters, Veliger 12(2): 230-231
MIT Sea Grant 2003-2008 Introduced and cryptogenic species of the North Atlantic. <missing URL>
Morris, Percy A. (1975) A field guide to shells of the Atlantic, Houghton-Mifflin, Boston. Pp. <missing location>
Morse, Edward S. (1880) The gradual dispersion of certain mollusks in New England, Bulletin of the Essex Institute 12: 171-176
Murphy, Dennis J. (1979) A comparative study of the freezing tolerances of the marine snails Littorina littorea (L.) and Nassarius obsoletus (Say), Physiological Zoology 52(2): 219-230
Perez, Kestrel O.; Carlson, Rose L.; Shulman, Myra J.; Ellis, Julie C. (2009) Why are intertidal snails rare in the subtidal? Predation, growth and the vertical distribution of Littorina littorea (L.) in the Gulf of Maine, Journal of Experimental Marine Biology and Ecology 369: 79-86
Perkins, L. F., and Larsen, P. F. (1975) <missing title>, Marine Research Laboratory, Department of Marine Resources, West Boothbay Harbor. Pp. 1-37
Peterson, Charles H. (1979) The importance of predation and competition in organizing the intertidal epifaunal communities of Barbegat inlet, New Jersey, Oecologia 39: 1-24
Petraitis, Peter S. (1983) Grazing patterns of the periwinkle and their effect on sessile intertidal organisms, Ecology 64(3): 522-533
Petraitis, Peter, S. (1989) Effects of the periwinkle Littorina littorea (L.) and of intraspecific competition on growth and survivorship of the limpet Notoacmea testudinalis (Muller), Journal of Experimental Marine Biology and Ecology 125: 99-115
Pohley, W. J. (1976) Relationships among three species of Littorina and their larval Digenea., Marine Biology 37: 179-186
Prezant, Robert; Counts, Clement L.; Chapman, Eric J. (2002) Mollusca of Assateague Island, Maryland and Virginia: additions to the fauna, range extensions, and gigantism., Veliger 45: 337-355
Reid, David G. (1996) <missing title>, Ray Society, London. Pp. <missing location>
Remane, Adolf; Schleiper, Carl C. (1971) Biology of Brackish Water, In: (Eds.) . , New York. Pp. 1-210
Richards, Horace Gardiner (1938) <missing title>, Bruce Humphries, Inc., Boston. Pp. <missing location>
Ropes, John W. (1989) The food habits of five crab species at Pettaquamscutt River, Rhode Island, Fishery Bulletin 87(1): 197-204
Ruiz, Gregory M.; Geller, Jonathan (2018) Spatial and temporal analysis of marine invasions in California, Part II: Humboldt Bay, Marina del Re, Port Hueneme, and San Francisco Bay, Smithsonian Environmental Research Center & Moss Landing Laboratories, Edgewater MD, Moss Landing CA. Pp. <missing location>
Scheibling, Robert E.; Lyons, Devin A.; Sumi, Catherine B.T. (2008) Grazing of the invasive alga Codium fragile ssp. tomentosoides by the common periwinkle Littorina littorea: Effects of thallus size, age and condition., Journal of Experimental Marine Biology and Ecology 355: 103-113
Scuchert, Peter (2010) The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Capitata Part 2, Revue Suisse de Zoologie 117(3): 337-355
Seeley, Robin Hadlock (1986) Intense natural selection caused a rapid morphological transition in a living marine snail., Proceedings of the National Academy of Sciences of the U.S.A. 83: 6897-6901
Sindermann, Carl J., Farrin, Alva E. (1962) Ecological studies of Cryptocotyle lingua (Trematoda: Heterphyidae) whose larvae cause 'pigment spots' of marine fish, Ecology 43(1): 69-75
Sorte, Cascade J. B.; Jones, Sierra J.; Miller, Luke P. (2013) Geographic variation in temperature tolerance as an indicator of potential population responses to climate change, Journal of Experimental Marine Biology and Ecology 400: 209-217
Spjeldnaes, Nils; Henningsmoen, Kari E. (1963) Littorina littorea: an indicator of Norse settlement in North America, Science 141: 275-276
Stunkard, H. W. (1930) The life history of Cryptocotyle lingua (Creplin) with notes on the physiology of the metacercariae., Journal of Morphology and Physiology 50(1): 143-182
Sumner, Francis B.; Osburn, Raymond C.; Cole, Leon J.; Davis, Bradley M. (1913b) A biological survey of the waters of Woods Hole and vicinity Part II. Section III. A catalogue of the marine fauna Part II. Section IV. A catalogue of the marine flora, Bulletin of the Bureau of Fisheries 31: 539-860
Todd, Mary E. (1964) Osmotic balance in Littorina littorea, L. littoralis, and L. saxatilis (Littorinidae), Physiological Zoology 37: 33-44
Trussell, Geoffrey C.; Ewanchuk, Patrick J.; Bertness, Silliman, Brian R. (2004) Trophic cascades in rocky shore tide pools: distinguishing lethal and nonlethal effects., Oecologia 139: 427-432
Tyrrell, Megan C.; Dionne, Michele; Edgerly, Jessica A. (2008) Physical factors mediate effects of grazing by a nonindigenous snail species on saltmarsh cordgrass (Spartina alterniflora) in New England marshes., ICES Journal of Marine Science 65: 746-752
U.S. National Museum of Natural History 2002-2021 Invertebrate Zoology Collections Database. http://collections.nmnh.si.edu/search/iz/
Vermeij, G. J. (1982b) Environmental change and the evolutionary history of the periwinkle (Littorina littorea) in North America, Evolution 36(3): 561-580
Verrill, A. E. (1880b) Occurrence at Newport, R. I., of two littoral species of European shells not before recorded as American, American Journal of Science 20: 250-251
Verrill, A. E. (1880c) Rapid diffusion of Littorina littorea on the New England Coast, The American Journal of Science 20: 251
Verrill, A. E., Rathbun, Richard (1879) List of marine invertebrates from the New England coast, distributed by the U.S. Commission of Fish and Fisheries, Proceedings of the United States National Museum 2: 227-252
Wares, John P.; Goldwater, Deena S.; Kong, Bo Y.; Cunningham, Clifford W. (2002) Refuting a controversial case of a human-mediated marine species introduction., Ecology Letters 5: 577-584
Wells, Harry W. (1965) Maryland records of the gastropod, Littorina littorea, with a discussion of factors controlling its southern distribution, Chesapeake Science 6(1): 38-42
White, K. L.; Townsend, S. M.; Reynolds, A. S. Barrington, E. B. (2010) Intertidal invertebrates of Scatarie Island: a preliminary species inventory and habitat description, Proceedings of the Nova Scotian Institute of Science 45(1): 9-17
Willey, Charles H.; Horace W. Stunkard (1942) Studies on pathology and resistance in terns and dogs infected with the heterophyid trematode, Cryptocotyle lingua, Transactions of the American Microscopical Society 61(3): 236-253
Wood, Albert Elmer, Wood, Horace, Elmer, 2nd (1927) A quantitative study of the marine mollusks of Cape May County, New Jersey, The Nautilus 41: 8-18
Wood, Chelsea L. and 5 authors (2007) Parasites alter community structure, Proceedings of the National Academy of Sciences 104(22): 9335-9339
Yale Peabody Museum of Natural History 2008-2016 YPM Invertebrate Zoology - Online Catalog. <missing URL>
Yamada, S.B.; Mansour, R.A. (1987) Growth inhibition of native Littorina saxatilis (Olivi) by introduced L. littorea (L.), Journal of Experimental Marine Biology and Ecology 105: 187-196