Benthobatis yangi, Taiwanese blind electric ray

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Benthobatis yangi Carvalho, Compagno & Ebert, 2003

Taiwanese blind electric ray
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drawing shows typical species in Narcinidae.

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) > Torpediniformes (Electric rays) 電鰩目 (Electric rays) > Narcinidae (Numbfishes) 雙鰭電鰩科 (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335);  yangi: Named for Hung-Chia Yang, Taiwanese Fisheries Research Institute in Kao-Hsiung.

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

; 海洋 深海底的; 深度上下限 - 300 m (Ref. 114953), usually - m (Ref. ).   

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

Northwest Pacific: Taiwan.

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 19 - 21.5 cm
Max length : 21.5 cm TL 雄魚/尚未辨別雌雄; (Ref. 75959)

簡短描述 型態特徵 | 形態測量圖

This species is distinguished from all its congeners by the following unique set of characters: both dorsal and ventral surfaces dark brown to purplish-black, with irregular whitish blotches ventrally; narrow nasoral region, with relatively small mouth, slender jaws and shallow circumoral groove; relatively small spiracles; very narrow gill-slits; the second dorsal fin is slightly larger than first, with more slanted anterior margin, broadly rounded apex, and convex posterior margin; low caudal fin, relatively elongated; interdorsal distance greater than distance between second dorsal and caudal fin; suprascapula very narrow and not arched posteriorly; males sexually mature between 19.1-21.5 cm TL; relatively high number of caudal vertebral centra (38-46), total vertebral centra (116-120) (Ref. 75959).

生物學特性     字彙 (例如 epibenthic)

A benthic species found on continental slope. Mainly feeds on polychaete worms (Ref. 114953). Stomach contents include mud and the partial remains of an unidentified polychaete worm, plus unattached polychaete bristles and unidentified small white objects (Ref. 75959). Maturity size of males at 16-19 cm TL (Ref. 114953).

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 : Carvalho, Marcelo | 合作者

de Carvalho, M.R., L.J.V. Compagno and D.A. Ebert, 2003. Benthobatis yangi, a new species of blind electric ray from Taiwan (Chondrichthyes: Torpediniformes: Narcinidae). Bull. Mar. Sci. 72(3):923-939. (Ref. 75959)

IUCN 瀕危狀態 (Ref. 124695)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (A2d); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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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 | 國家資料庫 | 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 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00468 - 0.02950), b=2.88 (2.67 - 3.09), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
回復力
瀕危性 (Ref. 59153):  Low vulnerability (11 of 100) .