Chama sp.

Overview

Scientific Name: Chama sp.

Phylum: Mollusca

Class: Bivalvia

Order: [Superorder] Imparidentia

Family: Chamidae

Genus: Chama

Species:

sp. cf. ambigua/brassica [Describe here as A. iricolor]

Native Distribution

Origin Realm:

[Chama ambigua] Tmperate N. Pacific

Native Region:

Origin Location:

Temperate Northern Pacific [Chama ambigua] Pacific side: Boso Peninsula to southern Kyushu. Japan Sea side: Oga peniusula to Ryukyu islands (Higo et al. 1999) *Type locality: Nagasaki (western Kyushu) [Chama ambigua] Boso Peninsula to Kyushu (Okutani ed. 2000) STATUS NOT STATED

Geographic Range:

NF

General Diversity:

NF

Non-native Distribution

Invasion History:

[Chama ambigua] No records of invasion (Global Invasive Species Database 2015)

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

Impacts

Impact in Japan:

Not applicable

Global Impact:

Not applicable

Tolerences

Native Temperature Regime:

Mild temperate, Warm temperate, Subtropical, Tropical

Native Temperature Range:

[Chama ambigua] Distributed at the temperature of 10.3ºC-15.9ºC in winter and 24.8ºC-28.2ºC in summer during 2007 and 2008 at Kii Peninsula. (Ohgaki 2010)

Non-native Temperature Regime:

Not applicable

Non-native Temperature Range:

Not applicable

Native Salinity Regime:

Euhaline

Native Salinity Range:

[Chama ambigua] Distributed at the salinity of 32.9 psu-34.5 psu in winter and 32.7-33.4 psu in summer during 2007 and 2008 at Kii Peninsula. (Ohgaki 2010)

Non-native Salinity Regime:

Not applicable

Temperature Regime Survival:

Mild temperate, Warm temperate, Subtropical, Tropical

Temperature Range Survival:

[Chama ambigua] Distributed at the temperature of 10.3ºC-15.9ºC in winter and 24.8ºC-28.2ºC in summer during 2007 and 2008 at Kii Peninsula. (Ohgaki 2010)

Temperature Regime Reproduction:

Mild temperate, Warm temperate, Subtropical, Tropical

Temperature Range Reproduction:

NF

Salinity Regime Survival:

Euhaline

Salinity Range Survival:

[Chama ambigua] Distributed at the salinity of 32.9 psu-34.5 psu in winter and 32.7-33.4 psu in summer during 2007 and 2008 at Kii Peninsula. (Ohgaki 2010)

Salintiy Regime Reproduction:

Polyhaline, Euhaline

Salinity Range Reproduction:

NF

Depth Regime:

Lower intertidal, Shallow subtidal

Depth Range:

[Chama ambigua] Intertidal to 20 m (Higo et al. 1999)

Non-native Salinity Range:

Native Abundance:

Rare

Reproduction

Fertilization Mode:

external

Reproduction Mode:

Gonochoristic/ dioecious

Spawning Type:

None

Development Mode:

Planktonic larva (type unspecified)

Asexual Reproduction:

Does not reproduce asexually

Reproduction Details:

NF

Adult Mobility:

Sessile

Adult Mobility Details:

Cemented to rocks (Higo et al. 1999)

Maturity Size:

NF

Maturity Age:

NF

Reproduction Lifespan:

[Bivalvia] spawning occurs from early summer to autumn is common for bivalves are in temperate or tropical zone. (Sumikawa 1994)

Longevity:

NF

Broods per Year:

NF

Reproduction Cues:

[Related species Chama pacifica] Because spawning is inferred when seawater temperature >21ºC (Zurel et al. 2010), it is presumed that seawater must be one of the cue of the reproduction (Otani pers. comm.).

Reproduction Time:

[Bivalvia] spawning occurs from early summer to autumn is common for bivalves are in temperate or tropical zone. (Sumikawa 1994)

Fecundity:

NF

Egg Size:

NF

Egg Duration:

NF

Early Life Growth Rate:

NF

Adult Growth Rate:

NF

Population Growth Rate:

NF

Population Variablity:

NF

Habitat

Ecosystem:

Rocky intertidal, Rocky subtidal

Habitat Type:

Epibenthic

Substrate:

Rock

Exposure:

Exposed

Habitat Expansion:

NF

Habitat Details:

[Chama ambigua] Cemented to rocks (Higo et al. 1999, Okutani ed. 2000)

Trophic Level:

Suspension feeder

Trophic Details:

[Chama ambigua] Filter feeder (Ohgaki 2010)

Forage Mode:

Non-selective

Forage Details:

NF

Natural Control:

NF

Associated Species:

NF

References and Notes

References:

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. Ohgaki S (2010) List of shore molluscs along the south-west coast of the Kii Peninsula, 2007-2008. Argonauta 18: 31-49. Okutani T (ed) (2000) Marine mollusks in Japan. Tokai University Press, Tokyo: 1173pp. (in Japanese) Zurel D et al. (2011) Parity and disparity between two Chama oysters: the reproductive biology of the Indo-Pacific C. pacifica Broderip, invasive to the Mediterranean Sea; and C. savignyi Lamy, indigenous to the Red Sea. Marine Ecology 1-11.

Literature:

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

Notes:

NA