Invasion HistoryFirst Non-native North American Tidal Record:
First Non-native West Coast Tidal Record:
First Non-native East/Gulf Coast Tidal Record:
General Invasion History:
Turbo coronatus has a wide native range from the Red Sea to South Africa, east to Japan, Korea, and Indonesia. It occurs in the intertidal zone among rocks and gravel (Poutiers 1998; Kil et al. 2005; Academy of Natural Sciences of Philadelphia 2014a, b; Museum of Comparative Zoology 2014). It was found on newly planted oysters in Samish Bay, Washington in 1924, but has not been seen since in North American waters (Kincaid 1947, cited by Hanna 1966; Carlton 1979; Carlton 1992).
North American Invasion History:
Invasion History on the West Coast:
In 1924, Kincaid found specimens of Turbo coronatus to be fairly abundant in Samish Bay, Washington (WA) on newly planted Pacific Oysters (Crassostrea gigas) from Japan (Kincaid 1947 cited by Hanna 1966 and Carlton 1979). This snail may also have been found by Kincaid in oyster beds at Willapa Bay, WA (Hanna 1966, photo caption), but no details are known. Turbo coronatus was found in Japanese Oyster shipments about to be planted in Elkhorn Slough, California in the 1930s (Bonnot 1935, cited by Carlton 1979). There are no further records of T. coronatus in North American waters.
Turbo coronatus is a mid-sized marine snail, with a heavy, turban-shaped, dextrally coiled shell. The whorls and spirals of the shell are somewhat flattened, so the width of the shell exceeds its length. The shell is strongly sculptured, with large flattened cup-like scales, interspersed with regular rows of small nodules. The operculum is shelly and covered with granules. The shell is up to 55 mm in diameter. The color is pale greenish brown with purplish-brown markings. The operculum is green with lighter granules. Description from: Richmond 1997 cited by Appeltans et al. 2014, Poutiers 1998, and photos at http://bigai.world.coocan.jp/pic_book/data54/r005333.html.
Lunella coronata (Gmelin, 1791)
Lunella viridana (Röding, 1798)
Potentially Misidentified Species
Turbo coronatus, the Crown Moon Turban snail, is an herbivorous marine gastropod. Sexes are separate and fertilization is external. The eggs are laid in gelatinous masses and hatch into planktotrophic larvae. The Crown Moon Turban inhabits rocky and gravelly shores in the intertidal zone, and feeds on attached algae and plant detritus (Poutiers et al. 1998).
|General Habitat||Oyster Reef||None|
|Salinity Range||Polyhaline||18-30 PSU|
|Salinity Range||Euhaline||30-40 PSU|
|Tidal Range||Low Intertidal||None|
Tolerances and Life History Parameters
|Maximum Width (mm)||55||Maximum width, but more commonly to 35 mm (Poutiers et al. 1998)|
|Broad Temperature Range||None||Warm temperate-tropical|
|Broad Salinity Range||None||Polyhaline-Euhaline|
General ImpactsIn its native range, Turbo coronatus is used for food, and the mother-of-pearl of its shell is locally used for shellcraft (Poutiers 1998). It has not become established in North American waters, and has had no economic and ecological impacts.
Regional Distribution Map
|Bioregion||Region Name||Year||Invasion Status||Population Status|
|NEP-III||Alaskan panhandle to N. of Puget Sound||1924||Def||Failed|
|P293||_CDA_P293 (Strait of Georgia)||1924||Def||Failed|
References1998 Ichthyological Collection Catalog. gopher://fowler.acnatsci.org:71
2002-2016a Malacology Collection Search. http://clade.ansp.org/malacology/collections/
2006-2014b OBIS Indo-Pacific Molluscan Database. http://data.acnatsci.org/obis/
2011-2015 World Registry of Marine Species. http://www.marinespecies.org/index.php
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
Hanna, G. Dallas (1966) Introduced mollusks of Western North America, Occasional Papers of the California Academy of Sciences 48: <missing location>
2008-2021 Museum of Comparative Zoology Collections database- Malacology Collection. http://www.mcz.harvard.edu/collections/searchcollections.html
Kil, Hyun Jong; Yoon, Sook Hee; Kim, Won; Choe, Byung Lae; Sohn, Hyun Joon; Park, Joong-Kee (2005) Faunistic investigation for marine mollusks in Jindo Island., Korean Journal of Systematic Zoology Special Issue 5: 29-46
Poutiers, J.M. (1998) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific., 1 Fisheries and Agricultural Organization, Rome. Pp. 363-648