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Oxynotus paradoxus, Sailfin roughshark : fisheries
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Oxynotus paradoxus
Picture by
Fundação Rebikoff-Niggeler
Elasmobranchii (sharks and rays) >
Squaliformes
(Sleeper and dogfish sharks) >
Oxynotidae
(Rough sharks)
Etymology:
Oxynotus:
oxys
(Gr.), sharp;
notos
(Gr.), back, referring to its keeled back (“dorso carenato”). (
See ETYFish
)
;
paradoxus:
Latin for strange or contrary to expectation; Frade was not sure if this shark, with its first dorsal spine directed backward instead of forward, represented a new species or an aberrant form of
O. centrina
. (
See ETYFish
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 265 - 1044 m (Ref.
128029
). Deep-water; 41°N - 11°N, 13°W - 3°W (Ref.
54694
)
Eastern Atlantic: Atlantic slope from Scotland to Senegal (Ref.
247
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 120 cm TL male/unsexed; (Ref.
35388
); common length : 85.0 cm TL male/unsexed; (Ref.
)
Found on the continental slope (Ref. 247; shallow depth from Ref. 35388. Probably feeds on small bottom invertebrates and fishes. Ovoviviparous.
Life cycle and mating behavior
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|
Reproduction
|
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|
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Larvae
Distinct pairing with embrace (Ref.
205
).
Compagno, L.J.V.
, 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref.
247
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(A2d); Date assessed:
31 August 2020
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
FAO - Fisheries:
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00160 - 0.00860), b=3.15 (2.94 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.0 ±0.60 se; based on food items.
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153
): High to very high vulnerability (72 of 100).
Climate Vulnerability (Ref.
125649
): Moderate vulnerability (36 of 100).
Price category (Ref.
80766
):
Unknown
.
Nutrients (Ref.
124155
): Calcium = 6.48 [1.20, 33.69] mg/100g; Iron = 0.264 [0.061, 0.871] mg/100g; Protein = 19 [17, 21] %; Omega3 = 0.267 [0.088, 0.854] g/100g; Selenium = 15.4 [4.5, 48.7] μg/100g; VitaminA = 8.94 [1.81, 45.35] μg/100g; Zinc = 0.358 [0.175, 0.690] mg/100g (wet weight);
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