Bythaelurus canescens (Günther, 1878)
Dusky catshark
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Bythaelurus canescens AquaMaps Data sources: GBIF OBIS |
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Bythaelurus canescens
Female 拍攝者 Elasmolab Universidad Austral de Chile
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Female 拍攝者 Elasmolab Universidad Austral de Chile
分類 / 名稱 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) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes (See ETYFish); canescens: Latin for hoary gray, referring to its “uniform greyish” coloration (presumably in spirits since this shark is brown in life) (See ETYFish).
More on author: Günther.
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes (See ETYFish); canescens: Latin for hoary gray, referring to its “uniform greyish” coloration (presumably in spirits since this shark is brown in life) (See ETYFish).
More on author: Günther.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
海洋 深海底的; 深度上下限 250 - 700 m (Ref. 244). 深水域; 2°S - 56°S, 81°W - 70°W
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southeast Pacific: Peru and Chile to the Straits of Magellan.
東南太平洋: 祕魯與智利到麥哲倫海峽。
東南太平洋: 祕魯與智利到麥哲倫海峽。
大小 / 重量 / 年齡
Found on the upper continental slopes primarily on mud, but also on rock bottoms. Feeds on bottom invertebrates. Oviparous, with a single egg per oviduct at a time. Not utilized at present.
在泥，也在岩石底部上上主要地棲息於大陸坡上層了。 吃底棲無脊椎動物。 卵生的, 只有一個卵每個輸卵管一次。 目前未被人類利用。
在泥，也在岩石底部上上主要地棲息於大陸坡上層了。 吃底棲無脊椎動物。 卵生的, 只有一個卵每個輸卵管一次。 目前未被人類利用。
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Oviparous; apparently laying a single egg per oviduct at a time (Ref. 244).東南太平洋: 祕魯與智利到麥哲倫海峽。
主要參考資料
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Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
漁業: 沒有興趣
FAO - 漁業: 著陸; Publication: search | FishSource | 周邊海洋
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基於模型的估計
首選溫度 (參考文獻 123201): 5.8 - 9.5, mean 6.3 °C (based on 13 cells).
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00172 - 0.00698), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 4.5 ±0.4 se; based on diet studies.
回復力 (參考文獻 120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).