Aliger gigas, Pink conch : fisheries

Aliger gigas   (Linnaeus, 1758)

Pink conch
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Aliger gigas

Classification / Names आम नाम | उपशब्द | CoL | ITIS | WoRMS

Gastropoda | Littorinimorpha | Strombidae

Environment: milieu / climate zone / गहराई सीमा / distribution range पारिस्थितिकी

; गहराई सीमा 2 - 73 m (संदर्भ 83934), usually ? - 30 m (संदर्भ 97646).  Tropical; 33°N - 2°S, 97°W - 45°W

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

Western Atlantic: South Carolina to Brazil.

Length at first maturity / आकार / Weight / Age

परिपक्व अवधि: Lm ?, range 2 - ? cm Max length : 30.0 cm SHL पुल्लिंग / अलिंग; (संदर्भ 105315); अधिकतम प्रकाशित वज़न: 3.3 kg (संदर्भ 105296); अधिकतम सूचित उम्र: 30 वर्षो (संदर्भ 126618)

Short description आकृति विज्ञान

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.

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

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).

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

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.

Main reference संदर्भ | संयोजक | सहयोगीयो

Leal, J.H. 2003. (संदर्भ 355)

IUCN Red List Status (संदर्भ 130435: Version 2024-2)


CITES status (संदर्भ 108899)


CMS (संदर्भ 116361)

Not Evaluated

Threat to humans

Human uses

मात्स्यिकी: उच्च वाणिज्य
| FIRMS (Stock assessments) | FishSource | Sea Around Us

साधन

अधिक जानकारी

Trophic Ecology
Food items (preys)
संघटक आहार
आहार खपत
परभक्षी
पारिस्थितिकी

इंटरनेट स्रोत

Alien/Invasive Species database | 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): 25.3 - 28, mean 27 (based on 146 cells).
लौटाव (Ref. 69278): माध्यम, न्यूनतम जनसंख्या दुगनी होने का समय 1.4 - 4.4 वर्ष। (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 (संदर्भ 71543): Moderate vulnerability (43 of 100).
Price category (संदर्भ 80766): Medium.
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.