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Atractosteus spatula (Lacepède, 1803)

Alligator gar
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Atractosteus spatula
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Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Lepisosteiformes (Gars) > Lepisosteidae (Gars)
Etymology: Atractosteus: Greek, atraktos, arrow + Greek, osteon = bone (Ref. 45335);  spatula: Atractosteus meaning spindle bone, and spatula in reference to the broad, elongated snout (Ref. 79012).
More on author: Lacepède.

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

; acqua dolce; salmastro demersale; distribuzione batimetrica 0 - ? m (Ref. 55223). Subtropical; 44°N - 20°N, 101°W - 82°W (Ref. 55223)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | 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.

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 305 cm OT maschio/sesso non determinato; (Ref. 3221); common length : 200 cm TL maschio/sesso non determinato; (Ref. 3728); peso massimo pubblicato: 137.0 kg (Ref. 58490)

Short description Chiavi di identificazione | Morfologia | Morfometria

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).

Biologia     Glossario (es. 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 Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore : Wiley, Ed | Collaboratori

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)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 14 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si; Acquario: Acquari pubblici
FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori
Ecology
Ecologia
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Maturities
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Egg(s)
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Distribution
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Aree FAO
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Visual pigment(s)
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Toxicities (LC50s)
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Genetica
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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=0.00302 (0.00121 - 0.00751), b=3.18 (2.96 - 3.40), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.0   ±0.67 se; based on food items.
Resilienza (Ref. 120179):  Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
Price category (Ref. 80766):   Unknown.