Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Υφάλμυρο; εύρος βάθους 0 - 20 m (Αναφ. 101198). Tropical, preferred 27°C (Αναφ. 107945); 46°N - 39°S, 26°E - 134°W (Αναφ. 106948)
Indo-Pacific.
Length at first maturity / Μέγεθος / Weight / Age
Maturity: Lm ?, range 2 - 2.1 cm Max length : 9.0 cm SHL αρσενικό/απροσδιόριστο; (Αναφ. 348); common length : 6.0 cm SHL αρσενικό/απροσδιόριστο; (Αναφ. 348); μεγ. αναφερόμενη ηλικία: 12 έτη (Αναφ. 126573)
Shell equivalve, thick and solid, ovate, strongly inflated, slightly longer than high and feebly inequilateral. Umbones strongly protruding, cardinal area rather large. About 18 radial ribs (15 to 20) with wide interstices at each valve; ribs stout and distinctly rugose, bearing regular, often rectangular nodules. Periostracum rather thin and smooth. Internal margins with strong crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell white under the yellowish brown periostracum. Inner side white, often tinged yellow towards the umbonal cavity.
This represents the most important commercial ark (Ref. 348). Lives in intertidal and shallow subtidal waters. On muddy bottoms, mainly in protected bays and estuaries, or in mangroves. Often occurring in dense populations (Ref. 348). Typically found in the intertidal with silty bottoms with low salinity. A filter-feeder and a shallow burrower. Primarily feeds on organic detritus, phytoplankton and detritus (Ref. 101198).
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. (Αναφ. 348)
IUCN Red List Status
(Αναφ. 130435: Version 2024-2)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
αλιεία: Εμπορικό(ά)
FAO - Υδατοκαλλιέργειες: production; αλιεία: landings, species profile | FishSource | Η θάλασσα γύρω μας
Εργαλεία
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 21.8 - 29.3, mean 28.4 (based on 3701 cells).
Ελαστικότητα
Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (K=0.54-4.34; tm=0.6; tmax=12).
Prior r = 0.85, 95% CL = 0.56 - 1.28, Based on 2 data-limited stock assessments.
Vulnerability
Low to moderate vulnerability (28 of 100).