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Atractosteus spatula (Lacepède, 1803)

Alligator gar
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Atractosteus spatula
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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Lepisosteiformes (Gars) > Lepisosteidae (Gars)
Etymology: Atractosteus: Greek, atraktos, arrow + Greek, osteon = bone (Ref. 45335)spatula: From the words atract, meaning spindle and osteus, meaning bony; spatula (referring to snout shape) (Ref. 10294).
More on author: Lacepède.

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

; eau douce; saumâtre démersal; profondeur 0 - ? m (Ref. 55223). Subtropical; 44°N - 20°N, 101°W - 82°W (Ref. 55223)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North America: ranges from Mississippi River basin from southwestern Ohio and southern Illinois in USA south to Gulf of Mexico; Gulf of Mexico Coastal Plain from Enconfina River in Florida, USA to Veracruz, Mexico.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 305 cm OT mâle / non sexé; (Ref. 3221); common length : 200 cm TL mâle / non sexé; (Ref. 3728); poids max. publié: 137.0 kg (Ref. 58490)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Large size and broad, short snout. Light dorsal stripe. Dark olivaceous brown above and white to yellowish beneath. Dark brown blotches on all fins (Ref. 37032).

Biologie     Glossaire (ex. epibenthic)

Facultative air-breathing (Ref. 126274); Adults inhabit sluggish pools and backwaters of large rivers, swamps, bayous, and lakes. Rarely enter brackish and marine waters (Ref. 5723). Feed on blue crabs, turtles, waterfowl or other birds and small mammals (Ref. 10294). Giant of the gars (Ref. 5723). Marketed fresh (Ref. 37032).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur : Wiley, Ed | Collaborateurs

Etnier, D.A. and W.C. Starnes, 1993. The fishes of Tennessee. The University of Tennessee Press, Knoxville, Tennessee, USA. (pls. check date). (Ref. 10294)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)

  Préoccupation mineure (LC) ; Date assessed: 14 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: intérêt commercial mineur; pêche sportive: oui; Aquarium: Aquariums publics
FAO - Publication: search | FishSource |

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Composition du régime alimentaire
Consommation alimentaire
Food rations
Prédateurs
Ecology
Écologie
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Paramètres de croissance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
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Recrutement
Abondance
Life cycle
Reproduction
Maturité
Maturity/Gills rel.
Fécondité
Frai
Spawning aggregations
Œufs
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Larves
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Distribution
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Introductions
BRUVS - Videos
Anatomy
Surface branchiale
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Otolith
Physiology
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Type de nage
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Visual pigments
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Toxicity (LC50s)
Genetics
Génétique
Heterozygosity
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Human related
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6406   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00229 (0.00091 - 0.00578), b=3.19 (2.97 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  4.0   ±0.67 se; based on food items.
Résilience (Ref. 120179):  Très faible, temps minimum de doublement de population supérieur à 14 ans (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
Catégorie de prix (Ref. 80766):   Unknown.