首页|First recorded birth of suspected non-identical twins in the Cuban boa Chilabothrus angulifer
First recorded birth of suspected non-identical twins in the Cuban boa Chilabothrus angulifer
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The occurrence of identical (monozygotic) or non-identical (dizygotic) twins in snakes is a rare phenomenon, reported in less than 1 % of more than 3,970 currently recognised species (Smith, 1999; Wallach, 2018; Uetz et al., 2022). Even rarer are twins in viviparous snakes, being recorded in only seven species belonging to seven families: Boa constrictor (Boidae), Coronella austriaca (Colubridae), Diadophis punctatus (Dipsadidae), Erpeton tentaculatum (Homalopsidae), Pseudechis colletti (Elapidae), Thamnophis sirtalis (Natricidae) and Vipera berus (Viperidae) (for reviews see Smith, 1999; Wallach, 2018). Smith (1999) reported the only known twins in the family Boidae (B. constrictor), accounting for one case in approximately 600 litters obtained in captivity by that author, evidencing its very low frequency. Herein we report the first case of twins, suspected to be non-identical, in the Cuban boa (Chilabothrus angulifer), which represents also the second case of twinning in the family Boidae and the eighth species of viviparous snake in which this phenomenon has been recorded.
First recorded birthsuspectednon-identical twins
TOMáS M. RODRíGUEZ-CABRERA、ALEJANDRO HERNáNDEZ GóMEZ、JAVIER TORRES
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Instituto de Ecología y Sistemática, La Habana 11900, Cuba
Calle 202, #28109A, Reparto Consuelo, Boyeros, La Habana 10800, Cuba
Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA
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