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Hemitrygon bennettii, Bennett's stingray : fisheries
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Bennett's stingray
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Hemitrygon bennettii
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Elasmobranchii (sharks and rays) >
Myliobatiformes
(Stingrays) >
Dasyatidae
(Stingrays) > Dasyatinae
Etymology: More on authors:
Müller
&
Henle
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 1 - 40 m (Ref.
86942
). Tropical; 36°N - 24°S, 48°E - 169°E
Indo-West Pacific: Indonesia (Java ) to central China, including Taiwan.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 35.2 cm WD male/unsexed; (Ref.
111772
); 54.5 cm WD (female)
This demersal species is found inshore and on continental shelf to at least 50 m depth. It feeds on small bony fishes and crustaceans (Ref.
11889
,
114953
). Max size may reach up to 85 cm WD (Ref.
47613
). Ovoviviparous (Ref.
50449
). Litters of only 1 pup (Ref.
114953
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref.
50449
). Distinct pairing with embrace (Ref.
205
).
Last, P.R. and L.J.V. Compagno
, 1999. Dasyatididae. Stingrays. p. 1479-1505. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome. (Ref.
9840
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(A2d); Date assessed:
28 August 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 24.7 - 29.1, mean 28.2 °C (based on 1060 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00344 - 0.00666), b=3.07 (2.98 - 3.16), in cm total length, based on LWR estimates for this species (Ref.
93245
).
Trophic level (Ref.
69278
): 4.5 ±0.80 se; based on food items.
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153
): Very high vulnerability (90 of 100).
Price category (Ref.
80766
):
Low
.
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- 20 July 2016
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