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) >
Arhynchobatidae (Softnose skates)
Etymology: microspinifera: Name from Latin 'micro' meaning small and the epithet of its larger New Zealand sibling species Brochiraja spinifera..
More on authors: Last & McEachran.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 600 - 1200 m (Ref. 58023). 深水域
Southwest Pacific: New Zealand.
西南太平洋: 紐西蘭。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 32.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 58023)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
A dwarf species with the following combination of characters: tail moderately elongate, 1.2-1.4 times disc length, 2.5-2.7 times ventral head length, 5.3-6.3 times snout length; orbit moderately large, 2.1-2.8 in preorbital snout length; tail base moderately broad, width at pelvic-fin insertions 2.1-3.1 times width at midlength; fine dermal dentic1es present over entire dorsal disc; rostral thorns reduced in adult, about equidistant from orbit and snout tip (snout length 1.8-2.1 times their distance from snout tip); mid-dorsal surface of tail naked apart from single row of moderately enlarged thorns extending anteriorly onto interpelvic space; dorsolateral surface of tail with numerous smaller thorns and large denticles; single preorbital thorn, postorbital thorn absent; ventral disc and tail naked; calcified rostral shaft short; alar thorns in small, well-defined patch; malar thorns absent; both surfaces of disc dark brown; with or without pale-edged pores on ventral surface; nuchal pore band indistinct; total pectoral radials 58-63; predorsal vertebrae 81-88; tooth rows in the upper jaw 33-37 (Ref. 58023).
一個矮小的種用下列的組合特徵: 尾部中等細長的, 1.2-1.4 倍體盤長度, 2.5-2.7 倍頭部下面長度, 5.3-6.3 倍吻長; 眼窩普通大的, 2.1-2.8 在眶前骨吻的長度中; 尾部基底一般寬, 在腹鰭嵌入 2.1-3.1 的寬度倍寬度在身體中央; 細的表皮 dentic 1es 在整個的背部體盤之上呈現; 嘴的刺在成魚中縮小的了, 大約距離相等的從眼窩與吻頂端;(吻的長度 1.8-2.1 倍他們的距離吻尖頂端) 尾部的背部中央表面裸露的分別地從單列的一般大刺前面地在 interpelvic 空間之上延伸; 背外側表面尾部有很多的較小的刺與大的細齒; 單一眶前骨刺 , 眼眶後的刺不存在; 腹面體盤與尾部裸露的; 變成石灰質嘴的軸短了; 翼的刺在小的, 很清晰小區塊; 頰刺不存在; 體盤的兩者表面深褐色的; 具有或者沒有邊緣灰白的孔在腹面上; 頸背的孔條紋不明顯的; 總計胸的動脈 58-63; 前背的脊椎骨 81-88; 在上頜 33-37 中的齒列.(參考文獻 58023)
Male paratype mature at 27 cm TL; no information on juveniles (Ref. 58023).
雄性副模式在 27 公分TL 時成熟; 沒有關於稚魚的資訊.(參考文獻 58023)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
西南太平洋: 紐西蘭。
Last, P.R. and J.D. McEachran, 2006. New softnose skate genus Brochiraja from New Zealand (Rajidae: Arhynchobatinae) with description of four new species. N. Z. J. Mar. Freshwater Res. 40(1):65-90. (Ref. 58023)
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Estimates based on models
Preferred temperature (Ref.
123201): 3.6 - 8.2, mean 5.3 °C (based on 20 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00273 - 0.01106), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.7 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Low vulnerability (23 of 100).
