Squalus hemipinnis, Indonesian shortsnout spurdog

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Squalus hemipinnis White, Last & Yearsley, 2007

Indonesian shortsnout 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 hemipinnis   AquaMaps   Data sources: GBIF OBIS
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Image of Squalus hemipinnis (Indonesian shortsnout spurdog)
Squalus hemipinnis
Female picture by Krajangdara, T. & S. Rodpradit

分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).  More on authors: White, Last & Yearsley.

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

; 海 底生の漂泳性; 深さの範囲 1 - 100 m (Ref. 58445).   Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Eastern Indian Ocean: Indonesia.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 43 - ? cm
Max length : 52.2 cm TL オス/雌雄の選別がない; (Ref. 58445); 78.0 cm TL (female)

簡単な記述 形態学 | 形態計測学

This species is distinguished by the following set of characters: slender body of moderate size, depth 9-10.6% TL; relatively narrow and very short snout, horizontal prenarial length is 8.4-9.1% TL; large eyes, length 5.1-5.6% TL; secondary lobe of anterior nasal flap is well developed; small dorsal fins that are strongly raked; first dorsal-fin spine is moderate, broad-based while the second dorsal-fin spine is moderate, robust and broad-based; weakly falcate pectoral fin in adults its inner margin relatively short, 6.9-7.8% TL; caudal fin with a short, broad caudal bar, enlarged upper caudal blotch and the fringe is located distally on lobe in juveniles; flank denticles are broadly unicuspidate to weakly tricuspidate; monospondylous centra 35-38, precaudal centra 72-76, total centra 96-100 (Ref. 58445).

生物学     用語集 (例 epibenthic)

Apparently occurs on or near the bottom of upper continental and insular slopes, but depth distribution is undetermined; probably on shallower water than its congeners. Presumably feeds on small fishes, cephalopods and crustaceans. Viviparous, with yolk-sac dependency. Gives birth to 3 -10 pups, but gestation period is unknown. Males mature at about 43 cm TL and females by 61 cm TL; with largest embryo measured at 18 cm. The species is a very common catch component fo the demersal longline fishery in deepwater areas in eastern Indonesia. It is caught for its meat, fins and liver oil (Ref. 58042).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Distinct pairing with embrace (Ref. 205).

主な参考文献 Upload your references | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者

White, W.T., P.R. Last and G.K. Yearsley, 2007. Squalus hemipinnis sp. Nov., a new short-snout spurdog from eastern Indonesia. pp. 101-108. 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 pp. (Ref. 58445)

IUCNのレッドリストの状況は (Ref. 120744)

  絶滅危惧に近い (NT) ; Date assessed: 01 December 2008

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 25.6 - 28.7, mean 28.3 (based on 20 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00153 - 0.00716), b=3.09 (2.91 - 3.27), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.3   ±0.3 se; Based on size and trophs of closest relatives
回復力 (Ref. 120179):  非常に低い, 14年以上の倍増期間の最小個体群 (Preliminary K or Fecundity.).
弱み (Ref. 59153):  High to very high vulnerability (69 of 100) .