Пластиножаберные (акулы и скаты) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Eponymy: Dr Yngve H Olsen (1905–2000) was a Danish American ichthyologist who worked (until at least 1963) at the Bingham Oceanic Laboratory, Yale University. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / пределы глубины / distribution range
экология
морской демерсальный; пределы глубины 55 - 385 m (Ref. 114953). Tropical; 30°N - 20°N, 98°W - 83°W (Ref. 114953)
Western Central Atlantic: northern Gulf of Mexico from Florida to Mexico.
Size / Вес / Возраст
половая зрелость: Lm ? range ? - ? cm
Max length : 69.0 cm TL самец/пол неопределен; (Ref. 114953)
Mucous pores on ventral surface not so black except mouth. Outer rim of nostril fringed. Pair of small white pores behind each spiracle, smaller whitish pores in 2 rows toward the tail (Ref. 7251). Lack of thorns along the midbelt of the disc from the level of the axils of the pectorals to the vicinity of the spiracles. Interspace between the dorsal fins. Upper surface dark olive brown with many small roundish obscure spots of darker brown on disc. Lower surface jet black (Ref. 6902).
Body shape (shape guide): other.
Found on outer continental shelf and upper slope (Ref. 114953). Moderately deep water species (Ref. 6902). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca. 51cm TL, females at ca. 59cm TL; hatching size unknown (Ref. 114953).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-1)
Угроза для людей
Harmless
Использование человеком
дополнительная информация
инструменты
Специальные отчеты
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ресурсы в Интернет
Estimates based on models
Preferred temperature (ссылка
123201): 16.5 - 23.6, mean 20.2 °C (based on 42 cells).
Phylogenetic diversity index (ссылка
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00131 - 0.00604), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (ссылка
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (ссылка
120179): низкий, минимальное время удвоения популяции 4.5-14 лет (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).
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