Elasmobranchii (Haie und Rochen) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Dalatiidae (Sleeper sharks)
Etymology: Heteroscymnoides: -oides, Greek suffix meaning like, resembling, or having the form of: similar to Heteroscymnus (=Somniosus, now in Somniosidae) (See ETYFish); marleyi: In honor of Natal fisheries officer Harold Walter Bell-Marley (1872-1945), to whom Fowler was “indebted” for many “interesting” South African fishes,” this shark being “another of his numerous discoveries” (See ETYFish).
Eponymy: Harold Walter Bell Marley (1872–1945) was Principal Fisheries Officer (1918–1937) at Durban, South Africa, and a naturalist with a particular interest in entomology. [...] (Ref. 128868), visit book page.
More on author: Fowler.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser benthopelagisch; tiefenbereich 0 - 502 m (Ref. 247). Tropical; 14°S - 30°S
Southeast Atlantic: near Ascension Island. Western Indian Ocean: Durban, Natal, South Africa.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 29.0 cm TL Männchen/unbestimmt; (Ref. 5578)
Rückenflossenstacheln (insgesamt) : 0; Afterflossenstacheln: 0. A cylindrical, dwarf dogfish shark with a long bulbous snout, small round eyes, and small gill slits; caudal fin paddle-shaped (Ref. 5578). Dark brown with conspicuous light-edged fins (Ref. 5578). Ventral surface covered with minute photophores (Ref. 6577).
Probably oceanic (Ref. 5578). The holotype was caught off a beach, but a second specimen was taken in the Atlantic at night between the surface and 502 m (Ref. 247). Food unknown but may subsist on pelagic fish and invertebrates (Ref. 247). Probably ovoviviparous with very few young (Ref. 247).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Distinct pairing with embrace (Ref. 205).
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)
IUCN Rote Liste Status (Ref. 130435: Version 2024-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
Tools
Zusatzinformationen
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00142 - 0.00675), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.1 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (19 of 100).
