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Alopias pelagicus  Nakamura, 1935

Pelagic thresher
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Alopias pelagicus
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Philippines country information

Common names: Pating, Pelagic thresher
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: subsistence fisheries | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: First record of the species; specimens collected from Fish Ports of Cebu and Cadiz cities (Ref. 47736, 47737). Also Ref. 110893.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/rp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., P.R. Last, J.D. Stevens and M.N.R. Alava, 2005
National Database:

Classification / Names

Elasmobranchii (sharks and rays) > Lamniformes (Mackerel sharks) > Alopiidae (Thresher sharks)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Weight / Age

Max length : 428 cm TL male/unsexed; (Ref. 106604); 383.0 cm TL (female); common length : 276 cm TL male/unsexed; (Ref. ); max. reported age: 29 years (Ref. 48844)

Length at first maturity
Lm ?, range 260 - 292 cm

Environment

Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 0 - 300 m (Ref. 106604), usually 0 - 150 m (Ref. 55167)

Climate / Range

Tropical; 40°N - 32°S, 34°E - 83°W (Ref. 54277)

Distribution

Circumglobal. Indo-Pacific: Red Sea, Arabian Sea, Maldives (Ref. 30829), Somalia, South Africa, Western Australia, China, Taiwan, Japan, New Caledonia, Hawaiian Islands and Tahiti. Eastern Pacific: Gulf of California and the Galapagos. Reliable records lacking partly due to its confusion with Alopias vulpinus.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. A small thresher with moderately large eyes, a broadly convex forehead, a very narrow caudal tip, and straight, broad-tipped pectoral fins (Ref. 5578). Upper lobe of caudal fin very long and strap-like, almost equal to length of rest of shark; lower lobe short but strong; terminal lobe very small (Ref. 13570). Dark blue on back and sides, underside white; no white patch over pectoral fin bases (Ref. 5578).

Biology     Glossary (e.g. epibenthic)

Primarily an oceanic species but sometimes close inshore (Ref. 247, 5578, 58302); neritic to oceanic, 0-152 m (Ref. 11230). Epipelagic (Ref. 58302). Mesopelagic in the tropics; may enter atoll lagoons (Ref. 37816). Stuns its prey with its tail, presumably feeding on small fishes and cephalopods (Ref. 6871). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 43278, 50449). Sometimes caught by ski-boat anglers (Ref. 5578). Utilized for human consumption, liver oil for vitamin extraction, hides for leather, and fins for shark-fin soup (Ref. 13570). A very common catch in the tuna and shark longline, and tuna drift net fisheries (Ref.58048). Maximum and common size of males estimated from discussion in Ref. 247. Adult females may reach at least 330 cm TL (Ref. 47613).

IUCN Red List Status (Ref. 115185)

  Vulnerable (VU) (A2d+4d)

Threat to humans

  Harmless (Ref. 13570)



Human uses

Fisheries: commercial; gamefish: yes

More information

Common names
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Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
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Fecundity
Eggs
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Age/Size
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Length-weight
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Morphometrics
Morphology
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Aquaculture
Aquaculture profile
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Ciguatera
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Internet sources

BHL | BOLDSystems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | ECOTOX | FAO(fisheries: production, species profile; publication : search) | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | Sea Around Us | SeaLifeBase | Tree of Life | uBio | uBio RSS | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record | Fishtrace

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.5   ±0.66 se; Based on food items.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Fec=2; tm=7-9; tmax = 29)

Vulnerability (Ref. 59153)
Very high vulnerability (86 of 100)
Price category (Ref. 80766)
Unknown