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Alligator - Species in
Alligatoridae - - Classification -
- Alligatoridae
- Crocodilia
- Reptilia
- Chordata
- Animalia
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Alligator mississippiensis (Daudin, 1801)
American alligator
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Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | CoL | ITIS | WoRMS
Reptilia | Crocodilia | Alligatoridae
Environment: milieu / climate zone / Mức độ sâu / distribution range Sinh thái học
; Nước ngọt; Thuộc về nước lợ. Subtropical; 36°N - 25°N, 106°W - 75°W
Distribution Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Những chỉ dẫn
Western Central Atlantic: Southeast USA (Alabama, Arkansas, North and South Carolina, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Texas).
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm 1.8 range ? - ? cm Max length : 427 cm TL con đực/không giới tính; (Tài liệu tham khảo 80293); 309.9 cm TL (female); Khối lượng cực đại được công bố: 473.10 g (Tài liệu tham khảo 80293); Khối lượng cực đại được công bố: 473.10 g
Short description Hình thái học
Broad snout with bony nasal bridge; edge of upper jaw overlaps with teeth of lower jaw when mouth closed. Juveniles are miniature adults with bright yellow cross-bands on black skin; yellow bands turn to olive brown. Skin around jaws, neck and belly are creamy white. Pale ventral surface, scales near tail black. Bony plates on scales of belly. Olive green eyes (Ref. 77040). Sexual dimorphism visible only on juveniles and adults greater than 0.6 m.
Can tolerate saline waters for short periods of time. Construct burrows used for shelter and hibernation at low temperatures. Construct alligator holes for refuge during dry periods. May cross land when alligator holes dry out to find another body of water. Opportunistic feeders. Juveniles feed on small invertebrates (insects, frogs) and small fish. Dietary range increases as size increases and larger adults consume all aquatic and terrestrial prey (fish, turtles, small mammals, birds, reptiles including small alligators). May also scavenge. Feeding activity related to temperature, decreasing at temperatures below 20 to 23°C. Ectothermic. Home range size of adult males is 2000 acres (Ref. 80292).
Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae
Courtship rituals involve rapid head-slapping on water surface, body postures reinforced with odor from musk glands. Courtship synchronizes spermatogenesis and ovulation. Female creates the nest, often the same site each year and near an 'alligator hole' from freshly torn up vegetation and mud (usually at the start of summer) above the water level. Female lays 20-50 eggs (average of 40-45), remains near the nest until eggs hatch, sometimes breaking the egg to help hatchlings out. She then takes 8-10 hatchlings in her mouth and carries them to the water encouraging them to swim out. Juveniles form pods which often stay close to the mother for a period of up to 2 years.
Main reference
Các tài liệu tham khảo | Người điều phối | Người cộng tác
Britton, A. 2002. (Tài liệu tham khảo 77040)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2024-2)
CITES status (Tài liệu tham khảo 108899)
Appendix II: International trade monitored
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Traumatogenic
Human uses
Các nghề cá: Tính thương mại; Nuôi trồng thủy sản: Tính thương mại
FAO - Các nghề cá: landings | FishSource | Biển chung quanh ta
Các công cụ
Thêm thông tin
Sinh thái dinh dưỡng
Sinh thái học
Population dynamics
Sự sinh trưởng
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Sự phong phú
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Sự phong phú
Life cycle
Distribution
Physiology
Thành phần ô-xy
Human Related
Stamps, coins, misc.
Outreach
Các tài liệu tham khảo
Các nguồn internet
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Các nghề cá: ; publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Cây Đời sống | Wikipedia (Go, tìm) | Tạp chí Zoological Record
Estimates based on models
Price category
(Tài liệu tham khảo 80766):
Unknown.