Nipponacmea habei


Scientific Name: Nipponacmea habei

Phylum: Mollusca

Class: Gastropoda

Order: [NONE]

Family: Lottiidae

Genus: Nipponacmea


habei [Describe here as A. iricolor]

Native Distribution

Origin Realm:

Temperate Northern Pacific

Native Region:

Origin Location:

Temperate Northern Pacific Tomarihama, Oshika Peninsula, along the Sanriku Coast of Japan (Won et al. 2013) STATUS NOT STATED Pacific coast of Japan (Nakaoka et al. 2006) Northern Japan: Pacific coast from Hokkaido south to Honshu and Izu Peninsula, and Japan Sea coast from Hokkaido south to Niigata Prefecture (Sasaki & Okutani 1994) STATUS NOT STATED [Japan] Southern Hokkaido to Izu Peninsula at Pacific side. Northern Hokkaido and southward to Niigata Prefecture via Oga Peninsula at Japan Sea side. (Sasaki & Okutani 1994, Higo et al. 1999) STATED

Geographic Range:

Japan: Pacific coast from Hokkaido to Izu Peninsula, and Japan Sea coast from Hokkaido south to Niigata Prefecture (Sasaki & Okutani 1994)

General Diversity:

two radula forms are found, acute and obtuse; obtuse is dominant in Kanto Japan; it is presumed that the radula changes from acute to obtuse as the degree of dependence on coralline algae increases; still unclear if genetics or ecology control radula variation (Sasaki & Okutani 1994)

Non-native Distribution

Invasion History:

No records of invasion (Global Invasive Species Database 2015, 2016)

Non-native Region:

Not applicable

Invasion Propens:

Not applicable

Status Date Non-native:

Not applicable

Vectors and Spread

Initial Vector:

Not applicable

Second Vector:

Not applicable

Vector Details:

Not applicable

Spread Rate:

Not applicable

Date First Observed in Japan:

Not applicable

Date First Observed on West coast North America:

Not applicable


Impact in Japan:

Not applicable

Global Impact:

Not applicable


Native Temperature Regime:

Cool temperate, Mild temperate, See details

Native Temperature Range:

temperate to cool temperate species: restricted to northern Japan (Sasaki & Okutani 1994) Cool temperate, Mild temperate (M. Otani, pers. comm.)

Non-native Temperature Regime:

Not applicable

Non-native Temperature Range:

Not applicable

Native Salinity Regime:

Polyhaline, Euhaline

Native Salinity Range:

Polyhaline, euhaline (M. Otani, pers. comm.)

Non-native Salinity Regime:

Not applicable

Temperature Regime Survival:

Cool temperate, Mild temperate, See details

Temperature Range Survival:

temperate to cool temperate species (Sasaki & Okutani 1994) Cool temperate, Mild temperate (M. Otani, pers. comm.)

Temperature Regime Reproduction:

Cool temperate, Mild temperate

Temperature Range Reproduction:

Cool temperate, Mild temperate (M. Otani, pers. comm.)

Salinity Regime Survival:


Salinity Range Survival:


Salintiy Regime Reproduction:

Polyhaline, Euhaline

Salinity Range Reproduction:


Depth Regime:

Upper intertidal, Mid intertidal

Depth Range:

[Japan] middle to high level of intertidal zone (Sasaki & Okutani 1994) This species is collected at the middle to higer intertidal zone. (Sasaki & Okutani 1994)

Non-native Salinity Range:

Native Abundance:

Common, See details


Fertilization Mode:


Reproduction Mode:

Gonochoristic/ dioecious

Spawning Type:


Development Mode:

Planktonic larva (type unspecified)

Asexual Reproduction:

Does not reproduce asexually

Reproduction Details:

The gonad is red and granular in female, while ceamy white and cotton-like in appearance in male. (Sasaki & Okutani 1994) External fertilization; gonochoristic/ dioecious; broadcast spawning; planktotrophic planktonic larva (type unspecified); does not reproduce asexually (M. Otani, pers. comm.)

Adult Mobility:

Actively mobile (Mobility is a normal part of at least part of the adult life cycle - at least in spurts. Not dependent upon distance traveled)

Adult Mobility Details:

mobile (Nakaoka et al. 2006)

Maturity Size:


Maturity Age:


Reproduction Lifespan:

[Kanto Japan] gonad is mature May to June (Sasaki & Okutani 1994)



Broods per Year:


Reproduction Cues:

[Kanto Japan] temperature: gonad is mature May to June (Sasaki & Okutani 1994)

Reproduction Time:

[Kanto Japan] gonad is mature May to June (Sasaki & Okutani 1994) The gonad is mature at least in May to June in the Kanto area (Sasaki & Okutani 1994) and Sendai Bay. (Deguchi 2007)



Egg Size:

120-130 μm. (Deguchi 2007)

Egg Duration:


Early Life Growth Rate:


Adult Growth Rate:


Population Growth Rate:


Population Variablity:




Rocky intertidal, Kelp forest

Habitat Type:

Epiphytic, Epibenthic, Under rock


Biogenic, Rock


Exposed, Semi-exposed, Protected

Habitat Expansion:


Habitat Details:

[Sanriku Coast of Japan] found in kelp bed (Won et al. 2013)  Northern Japan: found on rock surfaces and underside of boulders; in Kanto it is found on underside of boulders and vertical plane of rocks; found in intertidal zone, mid to high level (Sasaki & Okutani 1994) In the northern area of Japan, this species is rather common both on the underside of the boulders and on the surface of rock. In the Kanto area, it is uncommon and found on the vertical plane of rocks as well as underside of boulders. (Sasaki & Okutani 1994) Exposed, Semi-exposed, Protected (M. Otani, pers. comm.)

Trophic Level:


Trophic Details:

feeds on coralline algae, among other things (Sasaki & Okutani 1994) Judging from other Nippnacmea species in Japan (Sasaki & Okutani 1993), N. h. with acute lateral teeth is estimated to feed on microalgae, whereas that with obtuse teeth feeds on coraline algae. (Sasaki & Okutani 1994)

Forage Mode:


Forage Details:

Many Nipponacmea species seem to feed on microalgae by unselective scraping on the surface of rock. (Sasaki & Okutani 1993)

Natural Control:


Associated Species:


References and Notes


Deguchi R (2007) Fertilization causes a single Ca2+ increase that fully depends on Ca2+ influx in oocytes of limpets (Phylum Mollusca, Class Gastropoda). Developmental Biology, 304: 652-663. Global Invasive Species Database (2016). Access Date: 26-Oct-2015 and 2-Mar-2016 Higo S, Callomon P, Goto Y (1999) Catalogue and bibliography of the marine shell-bearing mollusca of Japan. Gastropoda, Bivalvia, Polyplachophora, Scaphopoda. Shell Scientific Publications, Osaka: 748pp. Nakaoka M, Ito N, Yamamoto T, Okuda T, Noda T (2006) Similarity of rocky intertidal assemblages along the Pacific coast of Japan: effects of spatial scales and geographic distance. Ecological Research. 21(3):425-35. Sasaki T & Okutani T (1993) New genus Nipponacmea (Gastropada, Lottiidae): a revision of Japanese limpets hitherto allocated in Notoacmea. VENUS 52: 1-40. Sasaki T & Okutani T (1994) Description of a new lottiid limpet, Nipponoacmea habei, with special reference to morphology and distributuion of two infraspecific populations. VENUS 53(1):1-20. Won NI, Kawamura T, Takami H, Watanabe Y (2013) Trophic structure in natural habitats of the abalone Haliotis discus hannai with distinct algal vegetation of kelp and crustose coralline algae: implication of ontogenetic niche shifts. Fisheries science. 79(1):87-97.


Limited information; expert opinion based on observational information or circumstantial evidence