Atrina vexillum   (Born, 1778)

Flag pen shell

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Atrina vexillum  AquaMaps  Data sources: GBIF OBIS
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Atrina vexillum

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

| Ostreida | Pinnidae

Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी

; गहराई सीमा 0 - 50 m (Ref. 75831).  Tropical

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | भूमिका

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.

Length at first maturity / आकार / वज़न / Age

Maturity: Lm ?  range ? - ? cm Max length : 48.0 cm SHL पुल्लिंग / अलिंग; (Ref. 348); common length : 30.0 cm SHL पुल्लिंग / अलिंग; (Ref. 348)

Short description आकृति विज्ञान

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.

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

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).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

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.

Main reference संदर्भ | संयोजक | सहयोगीयो

Poutiers, J.M. 1998. (Ref. 348)

IUCN Red List Status (Ref. 130435)


CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses

मात्स्यिकी: व्यापारिक
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साधन

अधिक जानकारी

देश
ऐफ ऐ ओ क्षेत्र
Ecosystems
संयोग
भूमिका
Stocks
पारिस्थितिकी
आहार
खाद्य पदार्थ
आम नाम
उपशब्द
परभक्षी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
आकृति विज्ञान
लार्वा
बहुतायत
संदर्भ
Mass conversion

इंटरनेट स्रोत

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, खोज) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 24.2 - 29.1, mean 28 (based on 1288 cells).
Vulnerability (Ref. 71543): Moderate vulnerability (38 of 100).
Price category (Ref. 80766): Unknown.