Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin pelagic-neritic; profondeur ? - 450 m (Ref. 36731). Tropical
Southeast Atlantic: South Africa and Namibia.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 9.5 range ? - ? cm
Max length : 17.0 cm SL mâle / non sexé; (Ref. 36731)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Diagnosis: It hardly differs from the European anchovy (Engraulis encrasicolus); of other anchovies in southern and eastern African waters, species of Stolephorus have 3 to 7 sharp needle-like scutes along the belly, while species of Thryssa have compressed bodies and a keel of scutes along the belly (Ref. 189).
Body shape (shape guide): elongated.
Pelagic in coastal waters, but down to a depth of about 400 m (Ref. 30573). It feeds on planktonic organisms (Ref. 30573). Larvae and juveniles were observed to be selective, raptorial carnivores and switched to non-selective filter feeding omnivory when adults. Caught with purse seines in South Africa and Namibia (Ref. 80687).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Bianchi, G., K.E. Carpenter, J.-P. Roux, F.J. Molloy, D. Boyer and H.J. Boyer, 1999. FAO species identification guide for fishery purposes. Field guide to the living marine resources of Namibia. FAO, Rome. 265 p. (Ref. 36731)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 10.2 - 16.7, mean 13.7 °C (based on 40 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00211 - 0.00989), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.0 ±0.1 se; based on size and trophs of closest relatives
Generation time: 1.2 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Résilience (Réf.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Prior r = 0.42, 95% CL = 0.28 - 0.64, Based on 2 full stock assessments.
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (11 of 100).
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Vulnérabilité climatique (Ref.
125649): Low to moderate vulnerability (26 of 100).
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Nutriments (Ref.
124155): Calcium = 347 [143, 896] mg/100g; Iron = 1.54 [0.71, 3.72] mg/100g; Protein = 17.9 [16.6, 19.3] %; Omega3 = 0.625 [0.326, 1.241] g/100g; Selenium = 50.5 [20.5, 129.2] μg/100g; VitaminA = 19.5 [4.1, 89.8] μg/100g; Zinc = 1.66 [0.99, 2.78] mg/100g (wet weight);
