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Rajella kukujevi, Mid-Atlantic skate
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Mid-Atlantic skate
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Rajella kukujevi
Picture by
Orlov, A.
Elasmobranchii (sharks and rays) >
Rajiformes
(Skates and rays) >
Rajidae
(Skates)
Etymology:
Rajella:
Latin, raja, -ae = a sting ray (Raja sp.) (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 750 - 2191 m (Ref.
106604
). Deep-water
Eastern Atlantic: known from the type locality, 49°50'N, 29°33'W.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 84.0 cm TL male/unsexed; (Ref.
106604
)
Holotype taken from a depth between 750 and 800 m (Ref.
26282
). Oviparous (Ref.
50449
). Eggs have horn-like projections on the shell (Ref.
205
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref.
50449
).
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
)
Least Concern (LC)
; Date assessed:
17 November 2014
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 4.1 - 6.2, mean 5.6 °C (based on 4 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [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
): 3.7 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (54 of 100).
Nutrients (Ref.
124155
): Calcium = 4.41 [0.65, 85.12] mg/100g; Iron = 0.303 [0.029, 4.120] mg/100g; Protein = 15.1 [13.0, 17.2] %; Omega3 = 0.464 [0.187, 1.164] g/100g; Selenium = 19.9 [3.4, 92.3] μg/100g; VitaminA = 4 [0, 55] μg/100g; Zinc = 0.284 [0.019, 3.287] mg/100g (wet weight);
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