Bythaelurus bachi Weigmann, Ebert, Clerkin, Stehmann & Naylor, 2016
Bach's catshark
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Bythaelurus bachi
Female 拍攝者 Weigmann, S.
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Female 拍攝者 Weigmann, S.
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); bachi: In honor of Johann Sebastian Bach (1685-1750), a “musical genius and one of the greatest composers of all time” (so named because the senior author admires Bach and not for any Bach-like feature the shark might possess, Simon Weigmann, pers. comm.) [see also B. vivaldii] (See ETYFish).
Eponymy: Johann Sebastian Bach (1685–1750) was described in the etymology as: “…a musical genius and one of the greatest composers of all time.” There is no further need here for a lengthy biography. (Ref. 128868), visit book page.
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); bachi: In honor of Johann Sebastian Bach (1685-1750), a “musical genius and one of the greatest composers of all time” (so named because the senior author admires Bach and not for any Bach-like feature the shark might possess, Simon Weigmann, pers. comm.) [see also B. vivaldii] (See ETYFish).
Eponymy: Johann Sebastian Bach (1685–1750) was described in the etymology as: “…a musical genius and one of the greatest composers of all time.” There is no further need here for a lengthy biography. (Ref. 128868), visit book page.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Western Indian Ocean: Madagascar Ridge at Walters Shoals.
大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
This species is distinguished by the following characters: body firm and stout (slender in juveniles); snout long, preorbital length 4.7-7.6% TL and has a broad, bell-shaped in dorsoventral view with distinct lateral indention; pre-outer nostril length 1.1-1.9 times internarial space; preorbital snout length 0.7-1.0 times interorbital space; preoral snout length 1.0-1.9 times in mouth width; eye length 9.0-13.0 times in predorsal distance, 3.6-5.4 times in head length and 1.4-4.1 times eye height; head length 1.8-2.7 times width at level of maximum outer extent of anterior nostrils; head width at level of maximum outer extent of anterior nostrils 1.1-1.5 times width at level of lateral indention of head, 1.1-1.8 times preorbital length, and 7.2-10.0% TL; its tongue and roof of mouth densely set with oral papillae of distinct size, which are partially very large and conglomerated from several single papillae; pelvic anterior margin 1.1-2.1 times in pectoral-fin anterior margin; first dorsal-fin base 1.0-1.8 times in interdorsal space; length of second dorsal-fin inner margin 0.5-1.9 times in second dorsal-fin height; length of second dorsal-fin base 6.7-9.7% TL; anal-fin base 0.7-1.3 times interdorsal space; upper jaw with 70-84 and lower jaw with 60-76 rows of small tri- to pentacuspidate teeth with outer surface of crown furrowed by strong longitudinal ridges and structured by reticulations in basal areas; monospondylous trunk vertebrae centra 38-43, diplospondylous precaudal centra 33-43, total centra 124-132; dermal denticle morphology highly diverse in different body areas and post-embryonic specimens with very characteristic double row each of about 20 distinctly enlarged, blunt, spatulate, cross-based dermal denticles along dorsal trunk; claspers rather long and very thick, inner margin length 10.6-11.3% TL, base width 2.3-3.1% TL; no clasper hooks, cover rhipidion and pseudosiphon very large, envelope elongated. Colouration: body and fins plain beige to light grayish-brown, slightly brighter on ventral side (Ref. 113731)
Cross section: flattened.
Cross section: flattened.
The females of this species based on total length are mature at 39.2 cm and immature at 36.1 cm, while males are mature at 40.0 cm and immature at 37.6 cm . The size at hatching based on the three post-embryonic specimens is estimated at around 12.0 cm TL (Ref. 113731).
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 | 合作者
Weigmann, S., D.A. Ebert, P.J. Clerkin, M.F.W. Stehmann and G.J.P. Naylor, 2016. Bythaelurus bachi n. sp., a new deep-water catshark (Carcharhiniformes, Scyliorhinidae) from the southwestern Indian Ocean, with a review of Bythaelurus species and a key to their identification. Zootaxa 4208(5):401-432. (Ref. 113731)
CITES
Not Evaluated
對人類具威脅
人類使用
FAO - Publication: search | FishSource |
更多資訊
營養生態學
食物項目（獵物）
食性組成
食物消耗量
食物配給
捕食者
食物項目（獵物）
食性組成
食物消耗量
食物配給
捕食者
生態學
生態學
生態學
人口動態
成長參數
最大年齡/尺寸
長度重量比
長度關係
長度-頻率
質量轉換
入添量
豐度
成長參數
最大年齡/尺寸
長度重量比
長度關係
長度-頻率
質量轉換
入添量
豐度
解剖學
鰓區
腦部
耳石
鰓區
腦部
耳石
生理學
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
遺傳學
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
工具
特別的報告
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網路資源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: 屬, 種 | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 樹狀分類階層 | Wikipedia: 去, 搜尋 | World Records Freshwater Fishing | Zoobank | 動物學的記錄
基於模型的估計
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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 (0.00171 - 0.00701), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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營養階層 (參考文獻 69278) |
4.3 ±0.5 se; based on size and trophs of closest relatives |
|
回復力 (參考文獻 120179) |
低的, 最小族群倍增時間4.5 - 14 年 (Preliminary low fecundity). |
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釣魚的脆弱性 (Ref. 59153) |
Low to moderate vulnerability (25 of 100). 🛈 |