Bivalvia |
Arcida |
Arcidae
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
Benthic; diepte 0 - 20 m (Ref. 348). Tropical
Indo-Pacific: East Africa to Red Sea and Polynesia.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm Max length : 9.0 cm TL mannelijk / geslacht onbekend; (Ref. 348); common length : 7.0 cm TL mannelijk / geslacht onbekend; (Ref. 348)
Shell equivalve, thick and inflated, very inequilateral, posteriorly expanded. Shape somewhat irregular, elongate rectangular in outline, with strongly protruding umbones anteriorly and a broad rounded keel from umbones to posteroventral margin. Posterior margin obliquely truncate, ventral margin slightly sinuous with a well-developed byssal gape. Cardinal area wide and riblets crossed by irregular growth marks, and a few larger radial ribs on posterodorsal slope. Periostracum coarsely pilose, mainly persisting towards shell margins. Hinge straight very long and narrow. Internal margins smooth. Colour: Outside of shell often encrusted with marine growths; posterior half dark brown, anterior half creamy white with zebra-like brown stripes. Inner side more or less strongly tinged with dark brown.
Found in reef areas of lagoons (Ref. 97298). Fixed on rocks, corals, or under stones. Littoral to sublittoral waters to a depth of 20 m (Ref. 348).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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 Bivalves. Acephala, Lamellibranchia, Pelecypoda. p. 123-362. In Carpenter, K. E. and V. H. Niem. 1998. FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 1. Seaweeds, corals, bivalves, and gastropods. Rome, FAO. (Ref. 348)
Status op de Rode Lijst van het IUCN
(Ref. 130435: Version 2025-2 (Global))
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel
FAO - Publication: search | FishSource |
Tools
Meer informatie
LevenscyclusVoortplantingMaturiteitFecunditeitPaaienEierenOntwikkeling van de eierenLarven FysiologieZuurstofverbruik
Menselijk gerelateerdPostzegels, munten, diversen.
Internetbronnen
Schattingen op basis van modellen
Weerstandsvermogen
(Ref. 69278): |
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (K=0.06) |
Kwetsbaarheid van de visserij
(Ref. 71543) |
Moderate to high vulnerability (46 of 100). |
Prijsklasse
(Ref. 80766): |
High. |
