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: heemstrai: Named after Phillip C. Heemstra who provided 5 specimens of this species (Ref. 31308).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 200 - 500 m (Ref. 106604). 深水域
Western Indian Ocean: off Kenya and Tanzania (Ref. 31308) to southern Mozambique (Ref. 11228).
西印度洋: 肯亞外海與坦尚尼亞 (參考文獻 31308) 到莫三比克南部.(參考文獻 11228)
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 60.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 106604)
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).西印度洋: 肯亞外海與坦尚尼亞 (參考文獻 31308) 到莫三比克南部.(參考文獻 11228)
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): 9.8 - 14, mean 11.7 °C (based on 15 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.1 ±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 (44 of 100).