Historical Assumptions about the Predation Patterns of Yellow Anacondas (Eunectes notaeus): Are They Infrequent Feeders?

Camera, Bruno Felipe; Miranda, Everton B. P.; Ribeiro-Jr, R. P.; Barros, Mariano; Draque, Juan; Waller, Tomás; Micucci, P.; Dambros, Cristian S.; Strüssmann, Christine

doi:10.1670/18-089

Cited by 2 publications

(3 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Females reach maturity when they are around 2 m of SVL, produce litters of 7–42 young every other year, and are usually maturing their eggs internally during the hunting season [ 35 ]. Yellow anacondas are generalist predators that both ambush and actively hunt for prey [ 54 , 55 ]. They feed on invertebrates, fishes, reptiles, mammals, birds, eggs, and eventually carrion [ 35 , 54 – 57 ].…”

Section: Methodsmentioning

confidence: 99%

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest

et al. 2023

Self Cite

View full text Add to dashboard Cite

Sustainable wildlife management is necessary to guarantee the viability of source populations; but it is rarely practiced in the tropics. The yellow anaconda (Eunectes notaeus) has long been harvested for its leather. Since 2002 its harvest has operated under a management program in northeastern Argentina, which relies on adaptive management practices, that limit the minimum body length permitted for harvesting, the number of active hunters and the length of hunting seasons. Here we investigated the effects of yellow anaconda harvest on its demography based on 2002–2019 data and show that exploitation levels are sustainable. The gradual reduction in annual hunting effort, due to a decrease in the number of hunters and hunting season duration, reduced the total number of anacondas harvested. Conversely, captures per unit effort increased across the study period. The body size of anacondas was not influenced by the harvesting, and more females than males were caught. We also found that a decrease in mean temperature positively influenced anaconda harvest and the capture of giant individuals. Because sustainable use is a powerful tool for conservation, and anacondas are widespread in South America, these discoveries are highly applicable to other species and regions.

show abstract

Section: Methodsmentioning

confidence: 99%

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Study Speciesmentioning

confidence: 99%

“…Yellow anacondas are generalist predators that both ambush and actively hunt for prey 42,43 . They feed on invertebrates, shes, reptiles, mammals, birds, eggs, and eventually carrion 30,[42][43][44][45] . Currently, the species is being assessed by the International Union for Conservation of Nature (IUCN) and-as all members of the Boidae family-it is listed in the Appendix II of the Convention on International Trade in Endangered…”

Section: Study Speciesmentioning

confidence: 99%

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest in northeastern Argentina

Camera

Stüssmann

Quintana

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Sustainable wildlife management is required to guarantee source species viability; however, it is practiced rarely in the tropics. The yellow anaconda (Eunectes notaeus) has a long history of being harvested for its leather. Since 2002 its harvest has operated under a management program in northeastern Argentina, which relies on adaptive management through limiting the minimum anaconda length, number of hunters and restricting the hunting season. We investigated the effects of the anaconda harvest on its biological parameters based on 2002-2016 data. Here we show that the levels of species exploitation are sustainable. The gradual reduction in the annual hunting effort, due to a decrease in number of hunters and hunting season duration, reduced the total number of anacondas harvested. Conversely, captures per unit effort increased across the study time-period. There was no variation in the mean length of anacondas harvested, or in largest anaconda sizes. Though more females than males were caught, the sex ratio did not vary significantly. We also found that a decrease in mean temperature positively influenced anaconda harvest and the captures of giant individuals. Because sustainable use is a powerful tool for conservation, those discoveries are highly applicable to other species and regions.

show abstract

Historical Assumptions about the Predation Patterns of Yellow Anacondas (Eunectes notaeus): Are They Infrequent Feeders?

Cited by 2 publications

References 49 publications

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest

Assessing the sustainability of yellow anaconda (Eunectes notaeus) harvest in northeastern Argentina

Contact Info

Product

Resources

About