Abstract (en):
The Indo-african beetle Digitonthophagus gazella was introduced into the Americas as a bio-controller of parasites and flies in livestock systems. This dung scarab is characterized for its high dispersal ability, reproduction and efficient use of cattle manure. In Colombia, the most recent survey situated this beetle only in lowland areas. In the present study D. gazella was found in two new Colombian departments (Meta and Valle del Cauca) and its presence was confirmed in Antioquia. In this study, few individuals were collected and they were associated with vegetation systems with poor cover, such as livestock pastures and sugar cane monoculture, suggesting early stages of colonization and corroborating the preference of the species for open areas. Besides with the range extension with new records, this work also provides insights on D. gazella apparent colonization above 500 m of altitude. The distribution of this species across the Magdalena River valley appears to be associated with inter-department bovine transport. The importance of a continuous monitoring of the dispersion of D. gazella in Colombia, to establish its dispersal rate, habitat preference and pest status is also highlighted.
Abstract (es):
Digitonthophagus gazella es un escarabajo indoafricano introducido en el continente americano como biocontrolador de parásitos y moscas en sistemas ganaderos. Se caracteriza por su alta capacidad de dispersión, reproducción y uso eficiente del estiércol bovino. En Colombia, los registros más recientes de esta especie lo sitúan sólo en áreas de tierras bajas. En el presente artículo se registra la presencia de D. gazella en dos nuevos departamentos de Colombia (Meta y Valle del Cauca) y se confirma para el departamento de Antioquia. En los muestreos se colectaron pocos individuos de esta especie, los cuales se encontraban asociados a sistemas simplificados como pastizales y monocultivos de caña de azúcar, con baja cobertura de dosel, lo cual demuestra la preferencia de la especie por sitios abiertos. El presente artículo actualiza la información de distribución con nuevos registros y provee, además, datos sobre el avance de esta especie por encima de los 500 m s.n.m. Se sugiere la dispersión natural de la especie a través de los valles interandinos del río Magdalena y el alcance de nuevos territorios a través del transporte interdepartamental de bovinos en el país. Se resalta la importancia de continuar monitoreando el avance de D. gazella en Colombia, para establecer su tasa de dispersión, preferencia de hábitats y determinar su relación con las especies nativas.
Keywords:
Escarabajos coprófagos, Especie introducida, Meta, Valle del Cauca, Antioquia, Monocultivo (es)
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How to Cite
Isaza-López, L. M., Montoya-Molina, S., Giraldo-Echeverri, C., León-González, J., González-Alvarado, A., & Montoya-Lerma, J. (2015). New records of the Indo-african beetle <em>Digitonthophagus gazella<em> (Fabricius 1987) (Coleoptera: Scarabaeinae) in Colombia. Biota Colombiana, 16(1). Retrieved from https://revistas.humboldt.org.co/index.php/biota/article/view/366
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