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Pseudotolithus typus, Longneck croaker : fisheries
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Pseudotolithus typus
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Teleostei (teleosts) >
Eupercaria/misc
(Various families in series Eupercaria) >
Sciaenidae
(Drums or croakers)
Etymology:
Pseudotolithus:
Greek, pseudes = false + greek, otos = ear + Greek, lithos = stone (Ref.
45335
)
.
More on author:
Bleeker
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 150 m (Ref.
2683
), usually ? - 60 m (Ref.
3593
). Tropical; 35°N - 17°S, 25°W - 14°E
Eastern Atlantic: Mauritania (Ref.
5377
) to Angola, becoming scarce north of Cape Verde. Often confused with
Pseudotolithus senegalensis
.
Length at first maturity / Size / Weight / Age
Maturity: L
m
48.3
  range ? - ? cm
Max length : 140 cm TL male/unsexed; (Ref.
40637
); common length : 50.0 cm SL male/unsexed; (Ref.
4780
); max. published weight: 15.0 kg (Ref.
40637
)
Short description
Morphology
|
Morphometrics
Dorsal
spines
(total): 10;
Dorsal
soft rays
(total): 28-32. Diagnosis: dorsal fin with 9 spines in the 1st part and 1 spine and 28-32 in the second; second anal spine about half the length of the 1st anal fin soft ray; pectoral fins short, about 19-21% SL; gill rakers short, about as long as gill filament at angle between lower and upper part of gill arch; maxilla extending beyond posterior eye border, eyes small, 7.2-8.4 times in HL, but this character is difficult to use for identification because of allometry (Ref.
81656
).
Inhabits coastal waters from shoreline to about 150 m depth, over mud and sandy mud bottoms. Most abundant in waters less than 60 m at temperatures above 18°C. Juveniles and sub-adults enter estuaries and rivers. Feeds mainly on small fishes and crustaceans. Peak spawning season from late spring to early autumn in tropical West Africa (Ref.
4780
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Chao, L.N. and E. Trewavas
, 1990. Sciaenidae. p. 813-826. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref.
3593
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
24 January 2020
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: commercial
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Estimates based on models
Preferred temperature (Ref.
123201
): 19.2 - 27.9, mean 25.7 °C (based on 104 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00363 - 0.01204), b=3.06 (2.91 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245
).
Trophic level (Ref.
69278
): 3.7 ±0.5 se; based on diet studies.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.22-0.29; tmax=7).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (49 of 100).
Price category (Ref.
80766
):
Medium
.
Nutrients (Ref.
124155
): Calcium = 62.8 [36.3, 118.9] mg/100g; Iron = 0.842 [0.417, 1.457] mg/100g; Protein = 19.1 [17.9, 20.3] %; Omega3 = 0.198 [0.109, 0.333] g/100g; Selenium = 88.4 [48.5, 173.3] μg/100g; VitaminA = 10.3 [3.8, 29.3] μg/100g; Zinc = 0.763 [0.547, 1.103] mg/100g (wet weight);
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