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