Rhynchorhina mauritaniensis Séret & Naylor, 2016
False shark ray
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) > Rhinopristiformes (Shovelnose rays) > Rhinidae (Wedgefishes)
Etymology: Rhynchorhina: Composite name from Rhynchobatus and Rhina indicating that the new genus exhibits features of both genera - with Rhynchobatus-like body with a rounded snout similar to Rhina; mauritaniensis: Named for the country Mauritania, its type locality,.
Etymology: Rhynchorhina: Composite name from Rhynchobatus and Rhina indicating that the new genus exhibits features of both genera - with Rhynchobatus-like body with a rounded snout similar to Rhina; mauritaniensis: Named for the country Mauritania, its type locality,.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
海洋 pelagic-neritic. ; 28°N - 14°N, 18°W - 5°W (Ref. 114953)
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
North-East Atlantic: off Mauritania.
大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
This species with a heavy shark-like body is distinguished by the following: head somewhat flattened; snout tip broadly rounded to somewhat quadrangular; tail with a dermal fold along each lower edge; large and falcate dorsal fins 2; caudal fin with distinct upper and lower lobes; conspicuous dermal folds 2 on posterior margin of spiracles; nostrils are very large and
oblique, and are separated from each other and from the mouth; anterior nasal flap is small (not extending to inner nostril corner); jaws moderately undulated; with about 66/72 rows of oral teeth arranged in pavement; a row of pointed thorns along each rostral ridge, 2/3 additional thorns may occur on snout tip; a single row of thornlets and thorns in front of orbit extending backward to level of spiracles; a median row of about 36 large, pointed thorns from the nape to
first dorsal fin and 6 between dorsal fins, median thorns flanked by two other shorter rows on the nape-shoulder area, additional short rows of thorns may be present on the outer shoulders; body covered with small dermal denticles, the crowns with a median posterior cusp, an extension from the median ridge, and short lateral cusp; dorsal side greyish to greenish with numerous white ocelli-like spots; a large black transverse blotch on ventral snout tip (Ref. 109576). Resembles Rhynchobatus lubberti in having a similar colour pattern, but differs in having a more broadly rounded snout (similar to that of the shark-ray Rhina ancylostoma (Ref. 109576).
Body shape (shape guide): elongated; Cross section: flattened.
Body shape (shape guide): elongated; Cross section: flattened.
A benthic species with presumably very restricted distribution range (Ref. 114953). A larger male of 275 cm TL (without the caudal fin) was observed in March 1998 at Agadir (reported not collected by an IMROP fishery observer). Caught by trammel net (Ref. 109576). The species was known from a few specimens caught in shallow water in Banc d'Arguin sandy shoal (Ref. 114953).
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
Séret, B. and G.J.P. Naylor, 2016. Rhynchorhina mauritaniensis, a new genus and species of wedgefish from the eastern central Atlantic (Elasmobrachii: Batoidea: Rhinidae). Zootaxa 4138(2):291-308. (Ref. 109576)
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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
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捕食者
生態學
生態學
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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
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解剖學
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身體成分
營養素
耗氧量
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魚聲
疾病與寄生蟲
毒性 (LC50s)
身體成分
營養素
耗氧量
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疾病與寄生蟲
毒性 (LC50s)
遺傳學
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基因組
遺傳學
異種性
遺傳率
遺傳多樣性
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網路資源
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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 = 1.0005 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00363 (0.00162 - 0.00814), b=3.11 (2.90 - 3.32), 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) |
3.5 ±0.5 se; based on size and trophs of closest relatives |
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釣魚的脆弱性 (Ref. 59153) |
High to very high vulnerability (72 of 100). 🛈 |