Scapharca indica, Rudder ark : fisheries
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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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Image of Scapharca indica (Rudder ark)
Scapharca indica
Picture by FAO

Klassificering / Namn Populärnamn | synonymer | CoL | ITIS | WoRMS

Bivalvia | Arcida | Arcidae

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

Benthic; djupintervall 0 - 25 m (Ref. 348).  Tropical

Utbredning Territories | FAO områden | Ekosystem | Förekomster | Utplanteringar

Indo-West Pacific. Climate: tropical to subtropical.

Längd vid första mognad / Storlek / Vikt / Ålder

Könsmognad: Lm ?  range ? - ? cm Max length : 5.0 cm TL hane/ej könsbestämd; (Ref. 348); common length : 4.0 cm TL hane/ej könsbestämd; (Ref. 348)

Kort beskrivning Morfologi

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.

Biologi     Ordlista (t.ex. epibenthisk)

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).

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

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.

Huvudreferens referenser | Koordinator | Medarbetare

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 på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))

  Not Evaluated 

CITES-status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless

Mänskliga användningsområden

Fiskeri: kommersiell
FAO - Publication: search | FishSource |

Verktyg

E-bok | Fälthandbok

Ytterligare information

Trofisk ekologi
Livsmedelsartiklar (preys)
Födosammansättning
Födointag
Predatorer
Ekologi
Ekologi
Populationsdynamik
Tillväxt
Max. åldrar / storlekar
Längd-vikt rel.
Längd-längd rel.
Längd-frekvenser
Massakonvertering
Abundans
Livscykel
Reproduktion
Könsmognad
Fekunditet
Lek
Ägg
Utveckling av ägg
Larver
Utbredning
Territories
FAO områden
Ekosystem
Förekomster
Utplanteringar
Fysiologi
Syreförbrukning
Människorelaterad
Frimärken, mynt, diverse.
Uppsökande verksamhet
Medarbetare
Taxonomi
Populärnamn
synonymer
Morfologi
Bilder
referenser
referenser

Internet-källor

BHL | BOLD Systems | CISTI | DiscoverLife | FAO - Publication: search | Fishipedia | GenBank (Genom, nukleotid) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, sök) | Zoologiskt register

Uppskattningar baserade på modeller

Sårbarhet i fisket
(Ref. 71543)		 Low vulnerability (10 of 100).
Priskategori
(Ref. 80766):		 Unknown.