Squalus notocaudatus, Bartail spurdog

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Squalus notocaudatus Last, White & Stevens, 2007

Bartail spurdog
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Squalus notocaudatus   AquaMaps   Data sources: GBIF OBIS
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drawing shows typical species in Squalidae.

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) > Squaliformes (Sleeper and dogfish sharks) 角鯊目 (Sleeper and dogfish sharks) > Squalidae (Dogfish sharks) 棘鮫科 (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436);  notocaudatus: Name from Latin 'nota' for mark and 'cauda' for tail, referring to the dark bar on the caudal fin..
More on authors: Last, White & Stevens.

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

海洋; 深度上下限 225 - 454 m (Ref. 58440).

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

Western Pacific: Queensland, Australia.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 61.9 cm TL 雄魚/尚未辨別雌雄; (Ref. 58440)

簡短描述 型態特徵 | 形態測量圖

This species in the 'highfin megalops group' is distinguished by the following set of characters: abdomen depth 8.6-11.1% TL; pre-vent length 45.3-46.5% TL, 1.9-2.0 times dorsal caudal margin; pre-second dorsal length 3.6-4.0 times pectoral-fin anterior margin, 2.4-2.6 times dorsal caudal margin; head width 1.4-1.6 times abdomen width; preoral length 2.8-3.2 times the horizontal prenarial length, 8.4-9.5% TL; head length 3.8-4.3 times its eye length; mouth width 3.4-4.3 times the length of upper labial furrow; interorbital width 1.4-1.5 times the horizontal preorbital length; fifth gill slit height 1.9-2.1% TL; strongly bifurcated anterior nasal flap; first dorsal fin upright, upper posterior margin almost vertical, greatest concavity closer to free rear tip than fin apex; posterior margin of second dorsal fin deeply concave; second dorsal-fin spine with a broad base; pectoral fin of adult weakly falcate, anterior margin long, 14.6-16.4% TL; both dorsal and ventral surfaces are pale; dorsal fins pale with obvious dark tips; first dorsal-fin spine and base of soft portion of dorsal fin both pale; caudal fin with broad white posterior margin; prominent dark, diagonal subterminal streak parallel to the upper posterior margin; flank denticles strongly tricuspid; monospondylous centra 47-49, precaudal centra 94-97, total centra 123-127 (Ref. 58440).

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

Distinct pairing with embrace (Ref. 205).

主要參考資料 Upload your references | 參考文獻 | 合作者 : Compagno, Leonard J.V. | 合作者

Last, P.R., W.T. White and J.D. Stevens, 2007. New species of Squalus of the 'highfin megalops group' from the Australasian region. p. 39-53. In P.R. Last, W.T. White and J.J. Pogonoski Descriptions of new dogfishes of the genus Squalus (Squaloidea:Squalidae). CSIRO Marine and Atmospheric Research Paper No. 014. 130 p. (Ref. 58440)

IUCN 瀕危狀態 (Ref. 125652)

  無危 (LC) ; Date assessed: 03 August 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

 





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孕卵數

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年龄/大小
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Otoliths
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眼睛色素

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網路資源

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Estimates based on models

Preferred temperature (Ref. 123201): 8.7 - 17.5, mean 13 °C (based on 25 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00161 - 0.00714), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.2   ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (45 of 100).