Home range and habitat use of Beni anacondas (Eunectes beniensis) in Bolivia

Paola De La Quintana, Jesús A. Rivas, Federico Valdivia, Luis Pacheco Acosta

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5 Scopus citations


Understanding of snake ecology has increased over the past two decades, but is still limited for many species. This is particularly true for the recently described Beni anaconda (Eunectes beniensis). We present the results of a radio-telemetry study of nine (3M:6F) adult E. beniensis, including home range, and habitat use. We located the snakes 242 times in wet season, and 255 in dry season. Mean wet season home range (MCP) was 25.81 ha (6.7 to 39.4 ha); while mean dry season home range was 0.29 ha (0.13 to 0.42 ha). We found no relationship between home range size and either snout-vent length, weight, or sex. Beni anacondas seem to prefer swamps, and patujusal, while avoiding forest, and rice fields. However, habitat use by individual snakes seems to vary based on the habitats available within their respective home range. Notably, rice fields were avoided by most snakes, which suggests that this type of habitat is unsuitable for anaconda management.

Original languageEnglish
Pages (from-to)547-553
Number of pages7
JournalAmphibia - Reptilia
Issue number4
StatePublished - 2017

Bibliographical note

Funding Information:
Acknowledgements. The study was funded by the Vicem-inisterio de Medio Ambiente, Biodiversidad, Cambios Climáticos y de Gestión y Desarrollo Forestal del Estado Plurinacional de Bolivia, that also granted required permits for research, and by Fundación Amigos de la Naturaleza. We express our gratitude to the Sirionó people, who helped us in the field and captured the snakes for the study. Special thanks go to William Cuellar, President of the Sirionó council. James Aparicio, Adriana Rico, Martha Crump, Xavier Santos, and five anonymous reviewers contributed helpful comments on earlier versions of the manuscript. Fernando Guerra, Fabiola Suárez, Orlando Euriba, and the Cuellar family helped in the field.

Publisher Copyright:
© 2017 by Koninklijke Brill NV, Leiden, The Netherlands.


  • Sicurí
  • Sirionó territory
  • snake movements
  • snake translocation
  • tropical ecology


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