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Arcida |
Arcidae
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
; गहराई सीमा 0 - 25 m (Ref. 348). Tropical; 36°N - 32°S, 29°E - 23°W
Indo-Pacific: Eastern Africa to Japan, Australia, eastern Polynesia and Hawaii.
Length at first maturity / आकार / वज़न / Age
Maturity: Lm ? range ? - ? cm Max length : 10.5 cm TL पुल्लिंग / अलिंग; (Ref. 348); common length : 7.0 cm TL पुल्लिंग / अलिंग; (Ref. 348)
Shell inequivalve, solid, inequilateral, obliquely ovate and elongate in outline, with an extended posteroventral part. Umbones much inflated, situated rather forwards, cardinal area narrow and elongate. About 40 radial ribs (35 to 44) at each valve; ribs usually with a narrow median groove on top, most visible towards the anterior ventral margin of valves in mature specimens. Periostracum coarse and velvety, often eroded on umbones. Internal margins with strong crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell greyish white, often stained darker grey on umbonal and posterior areas; periostracum dark brown. Inner side white, sometimes light yellow in the umbonal cavity.
Common on sand (Ref. 75831) and muddy bottoms at intertidal and sublittoral depths to 25 m (Refs. 348, 75831, 128042).
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
Harmless
Human uses
मात्स्यिकी: व्यापारिक
| FishSource |
साधन
इंटरनेट स्रोत
Estimates based on models
Preferred temperature
(Ref.
115969): 24.7 - 29.3, mean 28.4 (based on 3745 cells).
लौटाव
ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (K=0.78).
Vulnerability
Low vulnerability (10 of 100).
