Bivalvia |
Arcida |
Arcidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; brackish; depth range 0 - 30 m (Ref. 108826), usually 15 - 25 m (Ref. 108821). Tropical; 47°N - 26°S, 32°E - 154°E
Indo-West Pacific. Introduced in the Mediterranean and Black Sea. Tropical to subtropical.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 9.5 cm TL male/unsexed; (Ref. 348); common length : 8.0 cm TL male/unsexed; (Ref. 348)
Shell thick and solid, inflated, inequilateral, roughly quadrate in shape with arcuate ventral margin and obliquely truncate posterior margin; slightly inequivalve, left valve distinctly overlapping the right valve ventrally and posteriorly. Cardinal area rather long and narrow. About 33 radial ribs (30 to 36) at each valve; ribs as wide as the interstices, granulated on left valve. Periostracum well developed. Internal margins with strong crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell white under the blackish brown periostracum. Inner side whitish.
Common depth values based on occurrence. On fine muddy-sand bottoms (Ref. 126564), in bays and coastal lagoons (Ref. 348 and 75831).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam.
Poutiers, J.M. 1998. (Ref. 348)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
Fisheries: commercial
| FishSource | Sea Around Us
Tools
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 18.3 - 29.1, mean 28.2 (based on 598 cells).
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.2).
Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
