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Rhinopristiformes (Shovelnose rays) >
Rhinobatidae (Guitarfishes)
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335); sainsburyi: Named for Dr. Keith Sainsbury.
Eponymy: Dr Keith John Sainsbury (d: 1952) is a marine ecologist and mathematical modeler with a research focus on the assessment, ecology, economics, exploitation and conservation of marine resources and ecosystems. [...] (Ref. 128868), visit book page.
More on author: Last.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.; تغييرات عمق 66 - 200 m (Ref. 58070), usually ? - 150 m (Ref. 58070). Tropical; 5°S - 21°S, 114°E - 135°E (Ref. 114953)
Eastern Indian Ocean and Western Central Pacific: Western Australia to Papua New Guinea
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 59.5 cm TL جنس نر / بدون خواص جنسي; (Ref. 58070)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
This species is distinguished by the following characters: wedge-shaped disc, its dorsal surface scaled but no thorns; snout length 2.5-2.6 times interspiracular distance; orbit moderately large, diameter 1.6-1.9 times spiracle length; nostrils oblique, length 1.4-1.6 times internarial distance; anterior nasal-flaps inserted well into internarial space, but never almost united near ventral midline; posterior nasal flaps broad; ridges of rostral cartilage well-separated dorsally and almost parallel; prebranchial sensory-pore patch narrow, extending to first gill slit; distance between first gill slits 1.3-1.4 times distance between fifth gill slits; distance between fifth gill slits 2.5-2.9 times in ventral head length; postscapular sensory canal long, not grooved, extending more than three-quarters distance to pectoral-fin insertions; moderately tall dorsal-fins; pelvic-fin inner margin distinctly longer than its base in mature males, shorter than base in females; interdorsal distance more than 2.5 times first dorsal-fin base; outer spiracular fold distinctly larger than inner fold; dorsal margin of caudal fin about 2.0-2.2 times preventral margin; 162-171 post-synarcual vertebral centra; about 50 nasal lamellae; dorsal disc plain brownish or with faint dusky blotches or fine dark spots (Ref. 58070).
This species is mostly collected at depths shallower than 150 m. Male individuals mature at 46 cm TL, immature at 37.6 cm TL (Ref. 58070).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Last, P.R., 2004. Rhinobatos sainsburyi n. sp. and Aptychotrema timorensis n. sp. -- two new shovelnose rays (Batoidea: Rhinobatidae) from the eastern Indian Ocean. Rec. Aust. Mus. 56(2):201-208. (Ref. 58070)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-1)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (Ref.
123201): 20.5 - 26.8, mean 23.9 °C (based on 45 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00151 - 0.00578), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.4 se; based on size and trophs of closest relatives
جهندگی (Ref.
120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
