Scapharca indica (Gmelin, 1791)

Rudder ark

Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Scapharca indica AquaMaps Data sources: GBIF OBIS

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Scapharca indica

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | CoL | ITIS | WoRMS

Bivalvia | Arcida | Arcidae

Environment: milieu / climate zone / Mức độ sâu / distribution range Sinh thái học

; Mức độ sâu 0 - 25 m (Tài liệu tham khảo 348). Tropical

Distribution Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Những chỉ dẫn

Indo-West Pacific. Climate: tropical to subtropical.

Length at first maturity / Bộ gần gũi / Weight / Age

Chín muồi sinh dục: L_m ? range ? - ? cm Max length : 5.0 cm TL con đực/không giới tính; (Tài liệu tham khảo 348); common length : 4.0 cm TL con đực/không giới tính; (Tài liệu tham khảo 348)

Short description Hình thái học

Shell solid, laterally compressed and subrectangular in shape, very inequilateral, much longer than high and wider posteriorly; slightly inequivalve, left valve somewhat overlapping the right valve on posteroventral margin. Umbones small and situated anteriorly, cardinal area long and narrow. About 28 radial ribs (25 to 33) at each valve; ribs low and flat, wider than the interstices, slightly granulated on the anterior part of left valve. Periostracum coarse, concentrically striated. Internal margins with crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell whitish under the blackish brown periostracum. Inner side white, often tinged pale grey at periphery.

This species is considered to have a wide range, but the relationship between the Indian Ocean and West Pacific forms is insufficiently known (Ref. 348). On sand and mud bottoms. Littoral and sublittoral to a depth of 25 m (Ref. 348).

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae

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.