Bythaelurus naylori, Dusky snout catshark

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Bythaelurus naylori Ebert & Clerkin, 2015

Dusky snout catshark
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Bythaelurus naylori
Male picture by Ebert, D.A.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | 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);  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).

Environment: milieu / climate zone / depth range / distribution range 生態學

; 海洋 居於水底的; 深度上下限 89 - 1443 m (Ref. 102637). ; 33°S - 37°S, 55°E - 56°E (Ref. 102637)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Southwestern Indian Ocean: Southwest Indian Ridge.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 51.1 cm TL 雄魚/尚未辨別雌雄; (Ref. 102637); 54.8 cm TL (female)

簡短描述 型態特徵 | 形態測量圖

脊椎骨: 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)..

生物學特性     字彙 (例如 epibenthic)

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).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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 瀕危狀態 (Ref. 125652)

  資料不足 (DD) ; Date assessed: 24 April 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





人類使用

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網路資源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因組, 核甘 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 樹狀分類階層 | Wikipedia: , 搜尋 | World Records Freshwater Fishing | Zoobank | 動物學的記錄

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00168 - 0.00717), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
營養階層 (Ref. 69278):  4.4   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (42 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .