Congenital Anomalies in American Crocodile (<i>Crocodylus acutus</i>, Cuvier, 1807) Embryos from a Farm Breeder in Colombia
2024
Oscar Sierra Serrano | Andreia Garcês | Isabel Pires | John Alexander Calderón Mateus | Juan Medina Olivera | Jhesteiner Julio Dávila
The American crocodile (<i>Crocodylus acutus</i>, Cuvier, 1807) (Class Reptilia, Family Crocodylidae) is a crocodile species inhabiting the Neotropics. Congenital defects have been described in almost every vertebrate group. In crocodiles, teratology alterations have been described in captive animals (pets, zoos, farms) such as <i>Crocodylus niloticus</i> or <i>Gavialis gangeticus</i>. The present study aimed to characterize congenital malformations of <i>C. acutus</i> from a farm in Lomas de Matunilla, Ballestas, Bolívar, Colombia. A total of 550 unhatched eggs were examined after embryo death. A total of 61 embryos presented malformations, with 42 different types of anomalies observed. Limb and tail malformations (29%) were the most common malformations observed. Several malformations, such as cephalothoracopagus, thoracopagus, sternopagus, xiphopagus twins, campylorrachis scoliosa, and acrania, were documented in crocodiles for the first time. Research in teratology enhances our understanding of crocodile biology. It plays a role in their conservation and management, thus helping to ensure the long-term viability of these species in their natural habitats.
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