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Squalus bahiensis Viana, Carvalho & Gomes, 2016

Northeastern Brazilian dogfish
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Image of Squalus bahiensis (Northeastern Brazilian dogfish)
Squalus bahiensis
Male picture by Viana, S.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) 角鯊目 (Bramble, sleeper and dogfish sharks) > Squalidae (Dogfish sharks) 棘鮫科 (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436);  bahiensis: Named for its type locality, state of Bahia, northeastern Brazil.

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

; 海洋; 深度上下限 ? - 599 m (Ref. 109601).   

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

Southwest Atlantic: apparently endemic to the coast near Salvador, Bahia, Brazil.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 69.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 109601)

簡短描述 型態特徵 | 形態測量圖

脊椎骨: 115 - 117. This species is distinguished from all species of the S. megalops group by possessing pectoral fins with free rear tips rounded (vs. pointed); snout blunt and elongate (vs. rounded and short); dermal denticles tricuspid and rhomboid (vs. unicuspid and lanceolate); differs from S. mitsukurii by having narrower interorbital space, 8.2%, 7.9%-8.3% TL (vs. 9.3%, 9.1%-9.8% TL), shorter lower caudal fin lobe with preventral caudal margin 11.4%, 10.9%-11.3% TL (vs. 12.1%, 11.5%-12.4% TL); differs from S. blainvillei (from the Mediterranean Sea) by having lower dorsal fins with first dorsal-fin height 6.9%, 7.0%-7.1% TL (vs. 8.2%, 7.3%-8.7% TL), with second dorsal-fin height 5.3%, 4.2%-4.4% TL (vs. 7.2%, 6.6%-7.5% TL), a shorter upper labial furrow, its length 2.3%, 2.2% TL (vs. 2.5%, 2.4%-2.7% TL); differs from S. lobularis by having its caudal fin somewhat slender (vs. upper caudal lobe rectangular), second dorsal-fin spine not reaching dorsal-fin apex (vs. reaching dorsal-fin apex), shorter pectoral-fin inner margin with its length 8.1%, 8.4%-8.9% TL (vs. 10.5%, 9.2%-11.0% TL), greater clasper outer length of 5.0%, 4.6%-5.1% TL (vs. 4.3% TL) (Ref. 109601).

生物學特性     字彙 (例如 epibenthic)


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 : Compagno, Leonard J.V. | 合作者

de F. Viana, S.T., M.R. De Carvalho and U.L. Gomes, 2016. Taxonomy and morphology of species of the genus Squalus Linnaeus, 1758 from the Southwestern Atlantic Ocean (Chondrichthyes: Squaliformes: Squalidae). Zootaxa 4133(1):1-89. (Ref. 109601)

IUCN 瀕危狀態 (Ref. 120744)

  未評估 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00344 - 0.02417), b=3.02 (2.79 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.3   ±0.3 se; Based on size and trophs of closest relatives
回復力 (Ref. 69278):  非常低的, 最小族群倍增時間超過14 年 (Preliminary K or Fecundity.).
瀕危性 (Ref. 59153):  High vulnerability (65 of 100) .