رده بندی / Names
اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa
(كوسه ها و سپرماهيان) (sharks and rays) >
Squatiniformes (Angel sharks) >
Squatinidae (Angel sharks)
Etymology: Squatina: Latin for skate, which angel sharks superficially resemble, presumably tautonymous with Squalus squatina Linnaeus 1758 (no species mentioned). (See ETYFish); leae: Named for Lea-Marie Cordt..
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي نزديك كف زي; تغييرات عمق 100 - 500 m (Ref. 128961). Deep-water
Western Indian Ocean: Mascarene Plateau and India.
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 71.7 cm TL جنس نر / بدون خواص جنسي; (Ref. 128961); 87.0 cm TL (female)
توصيف مختصر
ريخت شناسي | ريخت ستجي بوسيله انداره گيري
This small angel shark (maximum size 870 mm TL) is distinguished by the following characters: absence of median row of scute-like denticles on trunk; anterior nasal flap with two lateral, elongate barbels and a medial rectangular barbel, all with ventral margins slightly fringed to almost smooth; concave between eyes; posterior nasal flap has an additional barblet; pectoral-pelvic space 10.0-14.9% TL; pectoral-fin apex angular; pelvic-fin free rear tips do not reach level of first dorsal-fin origin; tail is moderately long, its length from cloaca 50.2-58.5% TL; pectoral fins are moderately long, length 31.1-35.2% TL; dorsal fins are not lobe-like; first dorsal-fin base is somewhat longer than second dorsal-fin base; caudal fin of adults with angular apices; monospondylous centra 43-46; diplospondylous precaudal centra 55-58; total precaudal centra 100-104; total vertebral centra 130-136; pectoral-fin skeleton with propterygium articulating with four radials. Colouration: dorsal conspicuously bright, beige to light grayish-brown, with many light yellowish flecks on trunk, and pectoral and pelvic fins with countless densely set, minute dark spots, partially forming pseudocelli, all over the dorsal surface (Ref. 128961).
Reported size at birth is about 18.0-19.0 cm TL based on two late-term embryos; largest juvenile male with clearly immature claspers, is 37.3 cm TL (SAIAB 84178) and based on examined specimens, the maturity size of males is less than 64.5 cm TL. Largest adult (unretained) femal specimen is 87.0 cm TL; small paratypes at 26.3 and 37.0 cm TL are clearly juvenile (Ref. 128961).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Weigmann, S., D.F.B. Vaz, K.V. Akhilesh, R.H. Leeney and G.J.P. Naylor, 2023. Revision of the western Indian ocean angel sharks, genus Squatina (Squatiniformes, Squatinidae), with description of a new species and redescription of the African angel shark Squatina africana Regan, 1908. Biology 2023, 12(77):975. (Ref. 128961)
وضعيت در فهرست قرمز IUCN (Ref. 130435)
خطر برای انسان ها
Harmless
استفاده انسانی
اطلاعات بيشتر
اسامي عاممترادفسوخت و سازشکارچیانسم شناسي بوم زيستيتولید مثلبلوغتخم ریزیSpawning aggregationFecundityتخم هانمو تخم
Age/Sizeرشدطول - وزنطول - طولنوسانات طولیريخت ستجي بوسيله انداره گيريريخت شناسيتوزاد ( لارو)پويايي لارويبازسازیفراوانيBRUVS
مراجعآبزي پرورينمايه آبزي پرورينژادهاژنتيكElectrophoresesوارثبيماري هافرآوریNutrientsMass conversion
همكارانعکس هاStamps, Coins Misc.صداهاسيگواتراسرعتنوع شناگریمنطقه آبششيOtolithsمغزهابینایی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00293 - 0.01558), b=3.07 (2.88 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
جهندگی (Ref.
120179): متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (55 of 100).
