Alosa aestivalis, Blueback shad : fisheries

You can sponsor this page

Alosa aestivalis (Mitchill, 1814)

Blueback shad
Adicionar sua observação em Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Alosa aestivalis   AquaMaps   Data sources: GBIF OBIS
Carregue seu(sua) Fotos e vídeos
Pictures | Sounds | Imagem do Google
Image of Alosa aestivalis (Blueback shad)
Alosa aestivalis
Picture by Flescher, D.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Clupeiformes (Herrings) > Clupeidae (Herrings, shads, sardines, menhadens) > Alosinae
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.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; marinhas; Água doce; estuarina; anádromo (Ref. 51243); intervalo de profundidade 5 - 55 m (Ref. 5951).   Subtropical; 47°N - 27°N, 84°W - 60°W (Ref. 117456)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | 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).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm SL macho/indeterminado; (Ref. 7251); common length : 27.5 cm SL macho/indeterminado; (Ref. 188); peso máx. publicado: 200.00 g (Ref. 7251); idade máx. registrada: 8 anos (Ref. 12193)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 0; Raios dorsais (total): 15-20; Espinhos anais 0; Raios anais : 15 - 21; Vértebras: 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).

Biologia     Glossário (p.ex. epibenthic)

Inhabits rivers, estuaries, coastal waters, lakes and reservoirs (Ref. 117456). Adults are found in saltwater except during the spawning season and occur up to at least 200 km offshore (Ref. 117456). Forms schools and possibly wintering near the bottom and out from the coast, approaching the shore in the late spring. Feeds on small fishes, copepods and small shrimps. Spawns 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 70° 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).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

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

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 120744)

  Vulnerável, ver Livro Vermelho da UICN (VU) (A2b); Date assessed: 13 October 2011

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espécies comerciais
FAO(pescarias: produção; publication : search) | FishSource | Sea Around Us

Mais informação

Idade/Tamanho
Crescimento
Peso-comprimento
Comprimento-comprimento
Frequências de comprimento
Morfometria
Morfologia
Larvas
Dinâmica larval
Recrutamento
Abundância
Referências
Aquacultura
Perfil para aquacultura
Estirpes
Genética
Frequências alélicas
Hereditariedade
Doenças
Processamento
Conversão de massa
Colaboradores
Fotos
Stamps, Coins Misc.
Sons
Ciguatera
Velocidade
Tipo de natação
Área branquial
Otólitos
Cérebros
Visão

Ferramentas

Relatórios especiais

Baixar XML

Fontes da internet

Estimates based on models

Preferred temperature (Ref. 115969): 11.5 - 24.7, mean 23.7 (based on 86 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00388 - 0.01783), b=3.03 (2.86 - 3.20), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.8   ±0.3 se; Based on diet studies.
Resiliência (Ref. 120179):  médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (K=0.18; tm=4; Fec=45,800).
Vulnerabilidade (Ref. 59153):  Moderate to high vulnerability (51 of 100) .
Categoria de preço (Ref. 80766):   Low.