Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Onthophagus landolti and Canthon indigaceus chevrolati (Coleoptera: Scarabaeinae) are attracted to the feces of ivermectin-treated cattle in the Mexican tropics
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Keywords

Ivermectin
cattle feces
dung beetles
attraction
controlled conditions
field conditions
olfactometer
Ivermectina
heces de ganado
escarabajos estercoleros
atracción
condiciones controladas
condiciones de campo
olfatómetro

How to Cite

Rodríguez-Vivas, R. I., Basto-Estrella, G. del S., Reyes-Novelo, E., Pérez-Cogollo, L. C., Arcila-Fuentes, W., Ojeda-Chi, M. M., & Martínez-M, I. (2019). Onthophagus landolti and Canthon indigaceus chevrolati (Coleoptera: Scarabaeinae) are attracted to the feces of ivermectin-treated cattle in the Mexican tropics. Revista De Biología Tropical, 67(1), 254–265. https://doi.org/10.15517/rbt.v67i1.32917

Abstract

Ivermectin (IVM) is widely used for parasite control in livestock in the tropics. Residual IVM in feces conserves its insecticide activity for weeks and can harm dung beetle (DB) species. Attraction to the feces of IVM-treated cattle was tested using the DB species Onthophagus landolti (Harold) and Canthon indigaceus chevrolati (Harold) as models. Experiments were done under controlled laboratory conditions, semi-controlled field conditions and uncontrolled field conditions. Olfactometers were used in the controlled and semi-controlled trials. The control treatment was baited IVM-free feces, and the experimental treatments were the feces of cattle treated with 1 % IVM (subcutaneous administration; single, 0.2 mg/kg bw dosage) and collected at 5, 14, 21 and 28 days post-treatment. The uncontrolled field trial involved pitfall traps baited with IVM-free feces or feces from IVM-treated cattle collected five days post-treatment. Under controlled and semi-controlled conditions, the feces of IVM-treated cattle (at 5, 14, 21 or 28 days post-treatment) attracted more O. landolti and C. i. chevrolati individuals than IVM-free feces (P < 0.05). The same response occurred under uncontrolled conditions. This clear attraction for IVM-containing cattle feces by the studied DB species highlights that incorrect IVM use may pose a risk to DB communities in cattle production systems.

https://doi.org/10.15517/rbt.v67i1.32917
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Copyright (c) 2019 Roger Ivan Riodríguez-Vivas, Gertrudis del Socorro Basto-Estrella, Enrique Reyes-Novelo, Luis Carlos Pérez-Cogollo, William Arcila-Fuentes, Melina Maribel Ojeda-Chi, Imelda Martínez-M

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