分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (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); naylori: In honor of Gavin Naylor, College of Charleston (Charleston, South Carolina, USA), for contributions and innovative molecular research into the higher classification of chondrichthyans and for his support of the junior author’s work in the Southwest Indian Ridge of the southwestern Indian Ocean (See ETYFish).
Eponymy: Dr Gavin Naylor is Program Director of the Florida Program for Shark Research at the Florida Museum of Natural History, where he is also Curator and Professor. [...] (Ref. 128868), visit book page.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 底生の; 深さの範囲 89 - 1443 m (Ref. 102637). Deep-water; 33°S - 37°S, 55°E - 56°E (Ref. 102637)
Southwestern Indian Ocean: Southwest Indian Ridge. High Seas only.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 51.1 cm TL オス/雌雄の選別がない; (Ref. 102637); 54.8 cm TL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
脊つい: 114 - 128. This moderately-sized species is distinguished by the following set of characters: short snout
and bluntly rounded; preoral length 4.2-5.5% TL; oral cavity without papillae on the roof of the mouth and tongue; anal-fin base length is equal to or less than 1.5 times second dorsal-fin base length; upper caudal-fin margin with distinct enlarged dermal denticles; body colouration uniformly plain medium to dark brown, with light fin edges and a distinct dark dusky-colored snout (Ref. 102637)..
Body shape (shape guide): elongated; Cross section: angular.
Collected by bottom trawls and midwater trawls. Maturity size for females at 48.1 cm TL and are immature at 43.0 cm TL, males at 45.2 cm and immature at 38.0 cm TL (Ref. 102637).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ebert, D.A. and P.J. Clerkin, 2015. A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean. J. Ocean Sci. Found. 15:53-63. (Ref. 102637)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: bycatch
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 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).
栄養段階 (参照
69278): 4.4 ±0.5 se; based on size and trophs of closest relatives
回復力 (参照
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Preliminary low fecundity).
漁業の脆弱性 (Ref.
59153): Moderate vulnerability (42 of 100).
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