Gastropoda |
Ostreida |
Margaritidae
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
; গভীরতার পরিসীমা 0 - 40 m (সূত্র 80041), usually 0 - 20 m (সূত্র 75831). Tropical; 37°N - 28°S, 32°E - 124°W
Indo-Pacific: from Mexico to Tanzania and the Red Sea to French Polynesia. Introduced in the Atlantic and Mediterranean.
Length at first maturity / আকৃতি / Weight / Age
পরিপক্কতা : Lm ?  range ? - 4 cm Max length : 9.8 cm SHL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (সূত্র 2922); সর্বোচ্চ উলি্ল্লখিত বয়স : 15 বৎসর (সূত্র 129284)
Shell rather thick and large (attaining 25 cm in length), subcircular in outline, with a short and ill-defined posterior ear which is not drawn out into a wing-like process. Anterior margin markedly protruding beyond the tip of anterior ear. Outer surface of valves, when not worn, with densely set, flattened, imbricating concentric scales and moderately long, parallel-sided and flattened spines with tapering or rounded ends; spines lying relatively flat on surface of valves, arranged in radial rows and often strongly projecting on shell margins. hinge completely devoid of teeth. Colour: outside of shell greyish brown or green to nearly black in ground colour, with radial stripes of white or yellowish markings corresponding to the basal portion of old flattened spines. Internal nacreous area silvery, with a darker smoky hue and a hint of red and green iridescence on border. Non-nacreous area very dark.
Found in shallow waters in between corals (Ref. 122680). Byssally attached to rocks and coral debris (Ref. 8010). Inhabits reef areas of lagoons (Ref. 97298). Some found lying freely on sand, coarse gravel or dead coral substrates and often found in eel grass beds and other marine plants (Ref. 80041). Also occur in mangrove areas (Ref. 129120). Feeds on phytoplankton (Ref. 96904).
A continuous spawner (peak: December to April, warm season).
Poutiers, J.M. 1998. (সূত্র 348)
IUCN Red List Status
(সূত্র 130435: Version 2024-2)
CITES status (সূত্র 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
মৎস্য: বাণিজ্যিক
| FishSource | আমাদের চতুর্পাশ্বের সাগর
হাতিয়ার
আরো তথ্য
ট্রফিক বাস্তুতন্ত্র খাদ্যসামগ্রী পথ্য উপাদানখাদ্য গ্রহণFood rationsশিকারী প্রাণী সমূহ Human RelatedAquaculture profiles
Stamps, coins, misc.
ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature
(Ref.
115969): 23.8 - 29, mean 27.6 (based on 1848 cells).
স্থিতিস্থাপক
উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (K=0.26-0.58).
Vulnerability
Moderate to high vulnerability (47 of 100).
Price category
Unknown.
Nutrients : Calcium = 149 [71, 228] mg/100g; Iron = 8.53 [1.95, 15.11] mg/100g; Protein = 9.88 [8.64, 11.12] %; Omega3 = 0.313 [0.202, 0.423] g/100g; Selenium = 61 [50, 72] μg/100g; VitaminA = 0 μg/100g; Zinc = 2.04 [0.56, 3.51] mg/100g (wet weight); based on
nutrient studies.