分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Rajiformes (Skates and rays)
鰩目 (Skates and rays) >
Rajidae (Skates)
鰩科 (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 深度上下限 15 - 1310 m (Ref. 26346). 深水域; 33°S - 43°S, 166°E - 178°W (Ref. 114953)
Southwest Pacific: endemic to New Zealand.
西南太平洋: 紐西蘭的特有種。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 112.0 range ? - ? cm
Max length : 240 cm TL 雄魚/尚未辨別雌雄; (Ref. 26346); common length : 80.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 9258); 最大年齡: 24 年 (Ref. 47618)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Grey with scattered charcoal blotches dorsally, greyish-white ventrally (Ref. 26346).
灰色的有分散的深灰色斑塊背面, 腹地的灰白色.(參考文獻 26346)
Occurs in coastal waters, continental shelf and upper slope (Ref. 26346). Usually found in deeper waters to 200 m (Ref. 9258). Mainly feeds on benthic decapods and bony fishes (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca. 150 cm TL. This species is said to be long lived and slow growing (Ref. 114953).
出現於沿岸水域，大陸棚與上層斜坡。 (參考文獻 26346) 通常發現於較深的水域到 200 公尺.(參考文獻 9258) 卵生的.(參考文獻 50449) 卵在貝殼上有像觸角一樣的突出。 (參考文獻 205)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Young hatch at about 20-23 cm (Ref. 26346).西南太平洋: 紐西蘭的特有種。
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)
人類使用
漁業: 商業性
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Estimates based on models
Preferred temperature (Ref.
123201): 6.4 - 12.9, mean 8.2 °C (based on 173 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00133 - 0.00376), b=3.23 (3.09 - 3.37), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.1 ±0.6 se; based on size and trophs of closest relatives
Generation time: 11.6 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (80 of 100).
