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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.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά); Γλυκού νερού; Υφάλμυρο; ανάδρομο (Ref. 51243). Temperate; 46°N - 25°N, 82°W - 66°W (Ref. 117467)
Western Atlantic: along the coast from Maine to the St. John's River, Florida, USA (Ref. 188). Possibly in Campobello Island, New New Brunswick, Canada (Ref. 86798).
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm 32.0 range ? - ? cm
Max length : 60.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 188); common length : 34.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 188)
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 15 - 20; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 19 - 23; Σπόνδυλοι: 53 - 55. Belly with distinct keel of scutes. Lower jaw very prominent, but not rising steeply within mouth; teeth reduced or in upper jaw absent in fishes over 23 cm standard length. A dark spot on shoulder, several obscure dark spots along flank (sometimes missing). Closely resembles A. chrysochloris which has stronger jaw teeth, no shoulder spot and the body depth less than head length (Ref. 188). Silvery, with a dark grayish green back (Ref. 7251).
In freshwater habitat, this species occurs in open water of large rivers (Ref. 86798). Schools of adults are found in marine waters, along the coast; also estuaries, tidal rivers and tributaries during late spring and early summer (Ref. 4639). Juveniles tend to leave nursery areas during summer (Ref. 4639). Feeds on small fishes, also squid, small crabs and other crustaceans, as well as fish eggs. Spawn in tidal freshwater (Patuxent River, Chesapeake Bay in May) (Ref. 188), and return to the sea shortly after (Ref. 4639). Parasites found are nematodes, cestodes and trematodes (Ref. 37032).
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
αλιεία: περιορισμένης εμπορικότητας; αλιεία αναψυχής: ναί
Εργαλεία
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 8.4 - 25.5, mean 14 °C (based on 238 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 4.1 ±0.58 se; based on food items.
Generation time: 3.7 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (K=0.3).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (55 of 100).
Nutrients (Ref.
124155): Calcium = 11.5 [5.3, 62.2] mg/100g; Iron = 0.599 [0.251, 1.331] mg/100g; Protein = 19.5 [17.0, 22.3] %; Omega3 = 1.42 [0.75, 2.70] g/100g; Selenium = 12.1 [5.9, 24.0] μg/100g; VitaminA = 20.4 [5.1, 78.2] μg/100g; Zinc = 0.266 [0.167, 0.456] mg/100g (wet weight);
