Пластиножаберные (акулы и скаты) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); longicephalus: longus (L.), long; cephalus, from kephale (Gr.), head, about ¼ of total length (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
экология
морской батидемерсальный; пределы глубины 680 - 950 m (Ref. 97621). Deep-water; 39°N - 22°S
Indo-West Pacific: Seychelles, Japan, East China Sea, Philippines, and Australia. New specimens were caught off western New Caledonia (Coriolis Bank, Lansdowne Bank, Lord Howe Ridge and Fairway Ridge) and off Mozambique (Ref. 53905).
Length at first maturity / Size / Вес / Возраст
Maturity: Lm 51.0 range ? - ? cm
Max length : 60.0 cm TL самец/пол неопределен; (Ref. 559)
колючие лучи спинного плавника (общее число) : 0; колючие лучи анального плавника: 0. Grey-black, without conspicuous markings (Ref. 244).
Inhabits deep water, probably near the bottom (Ref. 11146). Oviparous (Ref. 50449). First record of a cartilaginous fish manifesting rudimentary hermaphroditism (Ref. 53905). Biology little known (Ref. 6871).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). First record of a cartilaginous fish manifesting hermaphroditism which is further classified as rudimentary hermaphroditism (Ref. 53905).
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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
Статус Красного Списка МСОП (Ref. 130435: Version 2024-2)
Использование человеком
рыболовство: не имеет хозяйственного значения
дополнительная информация
инструменты
Специальные отчеты
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ресурсы в Интернет
Estimates based on models
Preferred temperature (Ref.
123201): 5.2 - 7.4, mean 6 °C (based on 99 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00175 - 0.00721), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.9 ±0.4 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref.
120179): очень низкий, минимальное время удвоения популяции более 14 лет (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
