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Pseudocaranx dentex, White trevally : fisheries, aquaculture, gamefish
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Pseudocaranx dentex
Picture by
Carvalho Filho, A.
Teleostei (teleosts) >
Carangiformes
(Jacks) >
Carangidae
(Jacks and pompanos) > Caranginae
Etymology:
Pseudocaranx:
Greek, pseudes = false + French, carangue, the name of a Caribbean fish; 1836 (Ref.
45335
)
.
More on authors:
Bloch
&
Schneider
.
Issue
The species
Pseudocaranx cheilio
(Snyder, 1904) is considered as valid in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697) following Randall (2007: Ref. 86689). The species
Pseudocaranx georgianus
(Cuvier, 1833) is considered as valid in CofF ver. May. 2011 following Smith-Vaniz & Jelks (2006: Ref.
76781
), with
Caranx luna
Geoffroy Saint-Hilaire, 1817,
Caranx platessa
Cuvier, 1833,
Caranx nobilis
Macleay,1881, and
Usacaranx archeyi
Griffin, 1932 as synonyms.
Caranx georgianus
(now under
Pseudocaranx
is also a valid species.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; brackish; reef-associated; depth range 10 - 238 m (Ref.
58302
), usually 10 - 25 m (Ref.
5288
). Tropical; 40°N - 47°S
Western Atlantic: North Carolina, USA and Bermuda to southern Brazil. Eastern Atlantic: Mediterranean, Azores, Madeira, the Canary Islands, Cape Verde, Ascension and St. Helena Island. Indo-Pacific: South Africa, Japan, Hawaii (Ref.
26145
), Australia, Lord Howe and Norfolk islands, New Zealand. Reported from New Caledonia (Ref.
9070
).
Length at first maturity / Size / Weight / Age
Maturity: L
m
34.5
, range 28 - 37 cm
Max length : 122 cm TL male/unsexed; (Ref.
4887
); common length : 40.0 cm TL male/unsexed; (Ref.
9258
); max. published weight: 18.1 kg (Ref.
4887
); max. reported age: 49 years (Ref.
31614
)
Dorsal
spines
(total): 9;
Dorsal
soft rays
(total): 25-26;
Anal
spines
: 3;
Anal
soft rays
: 21 - 22;
Vertebrae
: 25. Greenish blue above, silvery white below; midside of body with yellow stripe; opercle with black spot (Ref.
3197
). LL with 20-26 scutes (Ref.
6390
). With maxilla the rear edge sloping slightly forward to its main axis, a large, diffuse dark blotch on the operculum, and a lateral line with 57-78 scales in the curved portion and 34-46 posterior scutes (Ref.
33616
).
Adults occur in bays and coastal waters, including estuaries (Ref.
9563
). Juveniles usually inhabit estuaries, bays and shallow continental shelf waters, while adults form schools near the sea bed on the continental shelf (Ref.
6390
). Schools are found at the surface, in mid-water and on the bottom and are often associated with reefs and rough bottom (Ref.
9072
). Schools are sometimes mixed with
Caranx koheru
and
Arripis trutta
(Ref.
9072
). Feed on plankton by ram-filtering and suction feeding and on bottom invertebrates (Ref.
9072
,
30206
). Eggs are pelagic (Ref.
4233
). Cultured only in Japan. (Ref.
4931
). One of the best table fish 'being indeed the salmon of St. Helena' (Ref.
5288
).
They are usually partial spawners, releasing eggs in small batches at intervals over a period of several weeks (Ref.
27733
).
Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley
, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref.
7300
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
10 May 2013
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: commercial; aquaculture: commercial; gamefish: yes
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 15.3 - 25.9, mean 22.3 °C (based on 362 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00872 - 0.02289), b=2.96 (2.83 - 3.09), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245
).
Trophic level (Ref.
69278
): 3.9 ±0.6 se; based on diet studies.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.18(?); tmax=46(?)).
Prior r = 0.42, 95% CL = 0.28 - 0.63, Based on 1 stock assessment.
Fishing Vulnerability (Ref.
59153
): High to very high vulnerability (73 of 100).
Climate Vulnerability (Ref.
125649
): Moderate to high vulnerability (52 of 100).
Price category (Ref.
80766
):
Very high
.
Nutrients (Ref.
124155
): Calcium = 23.5 [11.5, 45.7] mg/100g; Iron = 0.594 [0.313, 1.142] mg/100g; Protein = 19.6 [18.4, 20.9] %; Omega3 = 0.144 [0.086, 0.253] g/100g; Selenium = 52.3 [26.4, 100.4] μg/100g; VitaminA = 74 [18, 275] μg/100g; Zinc = 0.975 [0.667, 1.364] mg/100g (wet weight);
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