Bivalvia |
Ostreida |
Pinnidae
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 - 50 m (参照 75831). Tropical
Indo-Pacific: from East Africa, including Madagascar, the Red Sea and the Persian Gulf, to eastern Polynesia; north to Japan and Hawaii, and south to Queensland and New Caledonia.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm Max length : 48.0 cm SHL オス/雌雄の選別がない; (参照 348); common length : 30.0 cm SHL オス/雌雄の選別がない; (参照 348)
Shell reaching a very large size, thick and solid, inflated, variable in shape from triangular to hatchet-shaped or subglobular. Dorsal margin usually nearly straight, posterior margin broadly oval to somewhat truncate in outline. Ventral margin broadly convex posteriorly and concave near the umbones, often strongly lobate in medium-sized and large specimens. Outside of valves with 10 to 17 main radial ribs, often bearing scale-like spines, and with weaker interstitial riblets. Internal nacreous layer moderately strong, undivided, occupying the anterior half or 2/3 of valves. Hind margin of posterior adductor scar slightly protruding beyond the nacreous area (protrusion of adductor scar more developed in mature specimens). Colour: outside of shell dark reddish brown to nearly black, usually dull. Shell material semitranslucent, appearing a rich reddish purple when viewed with transmitted light. Interior dark brown to black, iridescent on nacreous area.
Because it attains a large size, this common species is probably one of the most economically important members of the family in the Indo-West Pacific. Beautiful but fragile black pearls are sometimes produced by the animal (Ref. 348). Intertidal to subtidal, on sand and mud (Ref. 75840).
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
漁業の脆弱性
(参照 71543) |
Moderate vulnerability (38 of 100). |
価格帯
(参照 80766): |
Unknown. |
