Gastropoda |
Littorinimorpha |
Strombidae
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
; গভীরতার পরিসীমা 2 - 73 m (সূত্র 83934), usually ? - 30 m (সূত্র 97646). Tropical; 33°N - 2°S, 97°W - 45°W
Western Atlantic: South Carolina to Brazil.
Length at first maturity / আকৃতি / Weight / Age
পরিপক্কতা : Lm ?, range 2 - ? cm Max length : 30.0 cm SHL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (সূত্র 105315); সবের্াচ্চ প্রকাশিত ওজন : 3.3 kg (সূত্র 105296); সর্বোচ্চ উলি্ল্লখিত বয়স : 30 বৎসর (সূত্র 126618)
Shell large, with relatively large spire, flared outer lip with posterior expansion projecting well beyond spire length. Spire taller than other species in genus. Sculpture of sharp knobs along shoulder. Colour: pale tan with thin brown periostracum. Internal shell colour deep pink.
The fisheries have grown exponentially in the last 30 years, with resulting declines in population and area closures. The species has been included on appendix 2 of CITES (Convention on the International Trade of Endangered Species). International trade is allowed only from nations in which the populations of the species are not under threat from commercial fishing (Ref. 355). Maximum weight from Ref. 97674 cited in Ref. 105296. This species is found intertidal and offshore, on coral reefs, particularly on algae, coral sand, and seagrass habitats (Refs. 355, 83934). Adults prefer sandy algal flats; also found on gravel, coral rubble, smooth hard coral and beach rock bottoms. Rarely on soft bottoms of mud and/or silt. Benthic grazer. Feeds on diatoms, seagrass detritus, and various algae and epiphytes. Nocturnal (Refs. 105087, 127891) (Ref. 355).
Copulation may precede spawning. Spawning occurs on a type of calcareous sand formed from the fragmentation of coral reefs, including large quantities of calcareous skeletal remains from small molluscs and calcareous algae. Females deposit the egg mass on the substrate (Ref. 105320). Life cycle: Eggs hatch into veligers after 3-5 days which feed on phytoplankton; after 21 days they undergo metamorphosis (juvenile stage) where they remain buried in the sand and emerge in seagrass beds to feed; adults return to the shallow inshore waters to spawn.
Leal, J.H. 2003 Gastropods. p. 99-147. In Carpenter, K.E. (ed.). The living marine resources of the Western Central Atlantic. Volume 1: Introduction, molluscs, crustaceans, hagfishes, sharks, batoid fishes, and chimaeras. FAO Species Identification Guide for Fishery Purposes and American Society of Ichthyologists and Herpetologists Special Publication No. 5. 1600p. (সূত্র 355)
IUCN Red List Status
(সূত্র 130435: Version 2025-1)
CITES status (সূত্র 108899)
Not Evaluated
Threat to humans
Human uses
মৎস্য: অত্যন্ত বাণিজ্যিক
| FIRMS (Stock assessments) | FishSource | আমাদের চতুর্পাশ্বের সাগর
হাতিয়ার
আরো তথ্য
Physiologyঅম্লজান ব্যবহার
Human RelatedStamps, coins, misc.
ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature
(Ref.
115969): 25.3 - 28, mean 27 (based on 146 cells).
স্থিতিস্থাপক
মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (K=0.25-0.71; tm=3-4; tmax=30).
Prior r = 0.97, 95% CL = 0.64 - 1.45, Based on 4 data-limited stock assessments.
Fishing Vulnerability
Moderate vulnerability (43 of 100).
Nutrients : Calcium = 126 [75, 177] mg/100g; Iron = 4.79 [1.67, 7.92] mg/100g; Protein = 15.9 [14.8, 16.9] %; Omega3 = 0.331 [0.263, 0.400] g/100g; Selenium = 57.8 [48.5, 67.2] μg/100g; VitaminA = 0 μg/100g; Zinc = 1.97 [0.92, 3.02] mg/100g (wet weight); based on
nutrient studies.
