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Squalus grahami White, Last & Stevens, 2007

Eastern longnose spurdog
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Squalus grahami   AquaMaps   Data sources: GBIF OBIS
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Image of Squalus grahami (Eastern longnose spurdog)
Squalus grahami
Male picture by Graham, K.

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

Пластиножаберные (акулы и скаты) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436)grahami: Named for Ken Graham, a prominent ichthyologist of NSW Dept. of Primary Industries, Cronulla.
Eponymy: Kenneth ‘Ken’ John Graham (d: 1947), originally from New Zealand, spent his career as an ichthyologist, biologist and fisheries research scientist in Australia. [...] (Ref. 128868), visit book page.
More on authors: White, Last & Stevens.

Environment: milieu / climate zone / depth range / distribution range экология

морской; пределы глубины 148 - 504 m (Ref. 58442), usually 220 - 450 m (Ref. 58442). Tropical

распространение страны | регионы FAO | Ecosystems | места находок | Point map | интродукции | Faunafri

Western Pacific: Australia.

Size / Вес / Возраст

Maturity: Lm ?  range ? - ? cm
Max length : 60.2 cm TL самец/пол неопределен; (Ref. 58442); 71.1 cm TL (female)

Краткое описание определительные ключи | морфология | морфометрия

This species is a moderate-sized one of the ‘mitsukurii group’ with the following set of characters: very elongate body, depth 10.1-12.6% TL; narrow, moderately long snout, preoral length 2.38-2.53 times its horizontal prenarial length, 10.5-11.3% TL, mouth width 1.54-1.77 (1.66) times its horizontal prenarial length; pre-first dorsal length is 28.9-31.3 (30.0)% TL; pre-second dorsal length is 60.2-62.7 (61.2)% TL; interdorsal space is 22.3-24.7 (23.8)% TL; dorsal fins are small, raked, first dorsal-fin height 6.3-7.2% TL; first dorsal-fin spine short and weak; second dorsal-fin spine slender with moderately broad base; prepectoral length 21.7-23.6 (22.4)% TL; pelvic-caudal space 24.0-26.5 (25.4)% TL; pectoral fin of adults slightly falcate; pectoral-fin inner margin relatively short, 7.1-7.8% TL; caudal bar almost upright, extending narrowly from the caudal fork up the posterior margin of the upper lobe for usually about 0.4 (rarely to 0.6) of its length in immature individuals, upper caudal fringe narrow, sometimes with a narrow central blotch on upper lobe; flank denticles are weakly tricuspidate; monospondylous centra 37-42, precaudal centra 80-87, total centra 105-116 (Ref. 58442).

биология     глоссарий (например epibenthic)

Life cycle and mating behavior половая зрелость | размножение | нерест | икра | Fecundity | личинки

Distinct pairing with embrace (Ref. 205).

Основная ссылка Upload your references | ссылки | координатор : Compagno, Leonard J.V. | соавторы

White, W.T., P.R. Last and J.D. Stevens, 2007. Two new species of Squalus of the 'mitsukurii group' from the Indo-Pacific. pp. 71-81. 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. 58442)

Статус Красного Списка МСОП (Ref. 130435: Version 2024-1)

  Близок к исчезновению (NT) (A2bd); Date assessed: 03 August 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless





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Estimates based on models

Preferred temperature (Ref. 123201): 12.4 - 18.9, mean 15.6 °C (based on 46 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00165 - 0.00730), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.3   ±0.3 se; based on size and trophs of closest relatives
устойчивость к внешним воздействиям (Ref. 120179):  низкий, минимальное время удвоения популяции 4.5-14 лет (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100).