Bivalvia |
Arcida |
Arcidae
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
Benthic; 深さの範囲 0 - 25 m (参照 348). Tropical; 36°N - 32°S, 29°E - 137°W
Indo-Pacific: Eastern Africa to Japan, Australia, eastern Polynesia and Hawaii.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm Max length : 10.5 cm TL オス/雌雄の選別がない; (参照 348); common length : 7.0 cm TL オス/雌雄の選別がない; (参照 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).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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.
主な参考文献
参考文献 | コーディネーター | 協力者
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. (参照 348)
IUCNのレッドリストの状況は
(参照 130435: Version 2025-2 (Global))
ワシントン条約ステータス (参照 108899)
Not Evaluated
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 商業
FAO - Publication: search | FishSource |
用具
インターネットの情報源
モデルに基づく推定値
回復力
(Ref. 69278): |
高い, １５か月以下の倍増期間の最小個体群 (K=0.78) |
漁業の脆弱性
(参照 71543) |
Low vulnerability (10 of 100). |
価格帯
(参照 80766): |
Medium. |
