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Megachasma pelagios Taylor, Compagno & Struhsaker, 1983

Megamouth shark
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Megachasma pelagios   AquaMaps   Data sources: GBIF OBIS
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Image of Megachasma pelagios (Megamouth shark)
Megachasma pelagios
Male picture by Carvalho Filho, A.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (tubarões e raias) (sharks and rays) > Lamniformes (Mackerel sharks) > Megachasmidae (Megamouth sharks)
Etymology: Megachasma: Greek, megas, megalos = great + Greek, chasma = cave (Ref. 45335).

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

; marinhas; oceanódromo (Ref. 51243); intervalo de profundidade 5 - 600 m (Ref. 58302), usually 120 - 166 m (Ref. 48844).   Deep-water; 40°N - 40°S, 180°W - 180°E

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Pacific Ocean: Japan, Indonesia, Philippines, Hawaii and California, USA. Atlantic Ocean: Brazil and Senegal.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm ?, range 540 - ? cm
Max length : 549 cm TL macho/indeterminado; (Ref. 85838); 709.0 cm TL (female)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 0; Vértebras: 125. Body stout, tapering posteriorly (Ref. 6871), tadpole-like with larger head and tapering trunk and tail (Ref. 47786). Snout extremely short but broadly rounded (Ref 43278, 47786). Head huge, blubbery (Ref. 6871). Mouth very broad and terminal on head, with corner extending behind the eyes (Ref. 6871, 43278). Jaws huge, protrusible anteriorly but not greatly distensible laterally (Ref. 43278, 47786), lower jaw extending to snout tip (Ref. 6871). Teeth very small, numerous, hooked (Ref. 43278, 6871, 47787). Gill slits moderately long, not reaching dorsal surface of head (Ref. 6871; 43278), internal gill slits lined with dense rows of papillose gill rakers (Ref. 43278). Eyes semicircular (Ref. 47786), with no nictitating membrane (Ref. 43278, 6871, 47786). Two dorsal fins, relatively low and angular; small anal fin; long, narrow pectoral fins; moderate-sized pelvic fin; caudal fin asymmetrical, non-lunate, with a short and strong ventral lobe; upper pre-caudal pit only; caudal peduncle without keels or ridges (Ref, 6871, 43278).

Biologia     Glossário (p.ex. epibenthic)

Oceanic, possibly occurring in depths between 150 and 1,000 m (Ref. 6871). Epi- and mesopelagic (Ref. 58302). Feeds on planktivorous prey such as euphausiid shrimps, copepods and jellyfish (Ref. 6871). May also eat small midwater fishes. Ovoviviparous (Ref. 50449). Possibly less active than the basking and whale sharks (Ref. 6871). Its feeding habits and habitat suggest that it may be a rare catch in the future. Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). Males mature by 400 cm (Ref. 6871). A bright white band on the snout just above the upper jaw may play a role in feeding behavior or with recognition of individuals (Ref. 47761). Preyed on by the semi-parasitic cookiecutter shark, Isistius brasiliensis.

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). Distinct pairing with embrace (Ref. 205). Size at birth <177 cm (Ref. 85838).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

Status na Lista Vermelha da UICN (Ref. 119314)

  Segura ou pouco preocupante (LC) ; Date assessed: 20 February 2015

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

Harmless





Uso pelos humanos

Pescarias: sem interesse
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Estimativas de algumas propriedades baseadas em modelos

Preferred temperature (Ref. 115969): 9.7 - 23, mean 17.8 (based on 247 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00437 (0.00174 - 0.01096), b=3.11 (2.88 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.4   ±0.2 se; Based on diet studies.
Resiliência (Ref. 69278):  Muito baixo(a), tempo mínimo de duplicação da população maior que 14 anos (Fec assumed to be <10).
Vulnerabilidade (Ref. 59153):  Very high vulnerability (89 of 100) .