(كوسه ها و سپرماهيان) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish); obsoletus: Latin for extinct, referring to fact that it has not been recorded since 1934 [originally spelled obsolerus, a misspelling based on incorrect optical character recognition results at several online English-Latin translation sites]. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي نزديك كف زي. Tropical
Western Pacific: collection records Gulf of Thailand, Vietnam and Malaysia (Borneo). Distribution is actually uncertain, with Baram in Sarawak (Malaysia) likely an accurate collection locality.
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 43.3 cm TL (female)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
مهره ها: 117 - 120. This small species is characterized by the following characters: a slender body and tail; no interdorsal ridge; in dorsal view head parabolic and is relatively wide, interorbital space 11.2-12.0% TL; eyes relatively large, its length 2.4-2.9% TL, 10.0-15.1 times in head length; row of enlarged hyomandibular pores alongside each mouth corner absent; upper anterior teeth broadly triangular and serrated, with large and coarse (non-lobate) serrations basally; lower anterior teeth with narrower, mostly straight cusps; the cusps of upper and lower anterolateral teeth with apical margin slightly recurved; lateral cusplets absent; total tooth row counts 27-31/26-29; posterior edge of mandibular plate with an elongate and crescentic indentation; second dorsal-fin origin well posterior of anal-fin origin, about opposite anal-fin midbase, while second dorsal-fin origin to anal-fin origin 1.3-2.5% TL, 0.3-0.6 times second dorsal-fin base; first dorsal-fin triangular, non-falcate, origin about opposite first third of pectoral-fin inner margin length, free rear tip just anterior to pelvic-fin origins, length 1.7-1.9 times height, inner margin 1.9-2.5 in base; second dorsal fin is much smaller than first, slightly smaller than anal fin, base 1.4-2.0 times height, height 22-31% of first dorsal-fin height; anal fin height 1.2-1.5 times second dorsal height, base 1.1-1.2 times second dorsal-fin base; total vertebral counts 117-120, monospondylous precaudal 36-40, diplospondylous precaudal 18-19, diplospondylous caudal 56-66, precaudal 54-58; absence of distinct black markings on fins (Ref. 119369).
Maximum length (43.3 cm TL) is that of a juvenile female; size at birth likely close to 34.0 cm TL, since late-term embryo was fully developed and a 37.0 cm TL juvenile had a faint umbilical sca (Ref. 119369).
Life cycle and mating behavior
Maturities | تولید مثل | Spawnings | Egg(s) | Fecundities | توزاد ( لارو)
White, W.T., P.M. Kyne and M. Harris, 2019. Lost before found: A new species of whaler shark Carcharhinus obsolerus from the Western Central Pacific known only from historic records. PLoS ONE 14(1):e0209387. (Ref. 119369)
وضعيت در فهرست قرمز IUCN (Ref. 130435)
خطر برای انسان ها
Harmless
استفاده انسانی
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=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.5 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 (Few large pups (RF)).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).
