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).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 居于水底的; 深度上下限 55 - 385 m (Ref. 114953). 熱帶; 30°N - 20°N, 98°W - 83°W (Ref. 114953)
Western Central Atlantic: northern Gulf of Mexico from Florida to Mexico.
中西大西洋: 墨西哥灣北部從佛羅里達至德克薩斯 (美國).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 69.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 114953)
简单描述
检索表 | 型态特徵 | 形态测量图
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).
在腹面上的黏液孔不很黑的除了嘴以外。 鼻孔的外缘边缘了。 在每个呼吸孔后面的成对小白色的孔 , 在 2 列的比较小的微白色的孔朝向尾部。 (参考文献 7251) 缺乏刺沿着来自胸鳍到喷水孔附近的枝腋的高度的体盘的腰带中央。 在背鳍之间的间隔。 上表皮深黄褐色有许多小圆暗斑点深褐色的在体盘上。 下表面墨黑色.(参考文献 6902)
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).
中等深度水域种.(参考文献 6902) 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).中西大西洋: 墨西哥灣北部從佛羅里達至德克薩斯 (美國).
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)
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Estimates based on models
Preferred temperature (Ref.
123201): 16.5 - 23.6, mean 20.2 °C (based on 42 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 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): 3.8 ±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 to high vulnerability (48 of 100).
