Alosa aestivalis, Blueback shad : fisheries

Alosa aestivalis (Mitchill, 1814)

Blueback shad
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Alosa aestivalis   AquaMaps   Data sources: GBIF OBIS
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Image of Alosa aestivalis (Blueback shad)
Alosa aestivalis
Photo de Flescher, D.

Classification / Noms Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Clupeiformes (Herrings) > Alosidae (Shads and Sardines)
Etymology: Alosa: Latin, alausa = a fish cited by Ausonius and Latin, halec = pickle, dealing with the Greek word hals = salt; it is also the old Saxon name for shad = "alli" ; 1591 (Ref. 45335).
More on author: Mitchill.

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

marin; eau douce; saumâtre pelagic-neritic; anadrome (Ref. 138280); profondeur 5 - 55 m (Ref. 5951). Subtropical; 47°N - 27°N, 84°W - 60°W (Ref. 117456)

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

Western Atlantic: Cape Breton, Nova Scotia south to the St. John's River, Florida; also in lower parts of rivers (Ref. 188). Introduced in reservoirs in several states, and in the upper Tennessee River system in Tennessee, USA (Ref. 117456, 86798).

Taille / Poids / Âge

Maturité: Lm ?  range ? - ? cm
Max length : 40.0 cm SL mâle / non sexé; (Ref. 7251); common length : 27.5 cm SL mâle / non sexé; (Ref. 188); poids max. publié: 200.00 g (Ref. 7251); âge max. reporté: 8 années (Ref. 12193)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 15 - 20; Épines anales: 0; Rayons mous anaux: 15 - 21; Vertèbres: 47 - 53. Moderately compressed, belly with distinct keel of scutes. Upper jaw with a distinct notch; lower jaw rising steeply within mouth; minute teeth present at front of jaws (disappearing with age). Lower gill rakers 41 to 52 (fewer in fishes under 10 cm standard length), slender. Back dark blue, sometimes bluish-grey; a dark spot on shoulder (Ref. 188). Peritoneum black (Ref. 7251). Branchiostegal rays 7 (Ref. 4639).
Body shape (shape guide): fusiform / normal; Cross section: compressed.

Biologie     Glossaire (ex. epibenthic)

Adults inhabit rivers, estuaries, coastal waters, lakes and reservoirs (Ref. 117456). They are found in saltwater except during the spawning season and occur up to at least 200 km offshore (Ref. 117456). They form schools and possibly wintering near the bottom and out from the coast, approaching the shore in the late spring. They feed on small fishes, copepods and small shrimps. Spawning occurs in brackish- or freshwaters of rivers, arriving in coastal waters a month or so later than A. pseudoharengus (in April at Chesapeake Bay, apparently when the water is above 7.0° C and later further north). Eggs are essentially pelagic, demersal in still water (Ref. 4639). Larvae are found in fresh and brackish rivers (Ref. 4639). Juveniles leave fresh and brackish nursery grounds at about 5 cm, migrating downstream (Ref. 4639). In freshwater habitat, this species usually occurs in current over rocky bottom (Ref. 86798). Marketed mostly fresh and salted (Ref. 188). Parasites found are acanthocephalan and nematodes (Ref. 37032).

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Upriver movement to spawning areas occur in late afternoon or at night (Ref. 4639).

Référence principale Téléchargez vos références | Références | Coordinateur | Collaborateurs

Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))

  Vulnérable (VU) (A2b); Date assessed: 13 October 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO - pêcheries: landings search; Publication: search | FishSource | Sea Around Us

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Recrutement
Abondance
Cycle de vie
Reproduction
Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Territoires
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Vidéos
Anatomie
Surface branchiale
Cerveau
Otolithe
Physiologie
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
Liées à l'homme
Systèmes d'aquaculture
Profils d'aquaculture
Souches
Cas de ciguatera
Timbres, pièces de monnaie, divers
Sensibilisation
Collaborateurs
Taxonomie
Noms communs
Synonymes
Morphologie
Morphométrie
Images
Références
Références

Outils

E-book | Guide de terrain | Clés d'identification | Générateur de fréquences de longueur | Outil de dynamique de population | Carte par point | Capture-MSY |

Articles particuliers

Maintenance en aquarium | Articles sur l'espèce | Rapports d'aquaculture

Télécharger en XML

Page de résumé | Coordonnées géographiques | Noms communs | Photos

Sources Internet

AFORO (otoliths) | Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - pêcheries: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OceanAdapt | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique
(Réf. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00708 (0.00414 - 0.01211), b=3.11 (2.96 - 3.26), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Niveau trophique
(Réf. 69278) 		3.8   ±0.3 se; based on diet studies.
Résilience
(Réf. 120179) 		Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.18; tm=4; Fec=45,800).
Vulnérabilité de la pêche
(Ref. 59153) 		Moderate to high vulnerability (51 of 100). 🛈
Vulnérabilité climatique
(Ref. 125649) 		Moderate to high vulnerability (50 of 100). 🛈
Catégorie de prix
(Ref. 80766) 		Low.
Nutriments
(Ref. 124155) 		Calcium = 28.1 [13.7, 137.6] mg/100g; Iron = 1.47 [0.63, 3.85] mg/100g; Protein = 19.8 [17.4, 22.6] %; Omega3 = 0.744 [0.386, 1.503] g/100g; Selenium = 18 [9, 36] μg/100g; VitaminA = 18.7 [4.7, 78.7] μg/100g; Zinc = 0.505 [0.325, 0.920] mg/100g (wet weight);