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Okamejei hollandi, Yellow-spotted skate
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Yellow-spotted skate
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Okamejei hollandi
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The Fish Database of Taiwan
Elasmobranchii (sharks and rays) >
Rajiformes
(Skates and rays) >
Rajidae
(Skates)
Etymology: More on authors:
Jordan
&
Richardson
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 67 - 87 m (Ref.
106604
). Tropical
Western Pacific: southern Japan (Ref.
559
), East China Sea, Taiwan, and the South China Sea.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref.
106604
)
Bottom-dwellers that feed on invertebrates and bony fish (Ref.
9908
). Depth range given by H. Ishihara (pers.comm. 07/07). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref.
205
). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref.
205
). Egg capsules are 5.3-6.7 cm long and 2.7-3.9 cm wide (Ref.
41253
,
41298
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Oviparous (Ref.
9908
). Paired eggs are laid. Embryos feed solely on yolk (Ref.
50449
). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref.
205
).
McEachran, J.D. and K.A. Dunn
, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref.
27314
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(A2d); Date assessed:
06 May 2020
CITES
Not Evaluated
Not Evaluated
Threat to humans
Other (Ref.
10311
)
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 18.4 - 26.8, mean 25.2 °C (based on 82 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.0 ±0.61 se; based on food items.
Generation time: 2.7 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (27 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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