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Dipturus johannisdavisi (Alcock, 1899)

Travancore skate
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Dipturus johannisdavisi
Picture by Mullasseri, S.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
More on author: Alcock.

Environment: milieu / climate zone / depth range / distribution range 生态学

海洋 深海底的; 深度上下限 220 - 660 m (Ref. 114953). 深水域; 15°N - 8°S, 40°E - 94°E (Ref. 114953)

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Western Indian Ocean: Gulf of Aden and Travancore coast in India. Questionably from near Zanzibar, Tanzania.
西印度洋: 在印度的亞丁灣與印度特拉凡哥爾海岸。 可懷疑地從近的坦尚尼亞的桑吉巴。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 54.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 114953)

生物学特性     字汇 (例如 epibenthic)

Inhabits upper continental slope (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Minimum depth from Ref. 58018.

卵生的.(参考文献 50449) 卵在贝壳上有像触角一样的突出。 (参考文献 205)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).西印度洋: 在印度的亞丁灣與印度特拉凡哥爾海岸。 可懷疑地從近的坦尚尼亞的桑吉巴。

主要参考文献 Upload your references | 参考文献 | 合作者 : McEachran, John | 合作者

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)

世界自然保护联盟红皮书 (Ref. 130435)

  数据缺失 (DD) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

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Trophic ecology
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参考文献

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网络资源

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00133 - 0.00596), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.7   ±0.6 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (42 of 100).