Artículo
Different factors that modify anti-predator behaviour in guanacos (Lama guanicoe)
Taraborelli, Paula Andrea
; Ovejero, R.; Mosca Torres, Maria Eugenia
; Schroeder, Natalia
; Moreno, Pablo Gastón
; Gregorio, Pablo Francisco
; Marcotti, Eugenia
; Marozzi, Antonela Alejandra
; Carmanchahi, Pablo Daniel
Fecha de publicación:
10/2014
Editorial:
Springer Heidelberg
Revista:
Acta Theriologica
ISSN:
0001-7051
e-ISSN:
2190-3743
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Animals optimize the trade-off between the cost of not fleeing and the benefits of staying because the factors that influence flight decisions and the disturbance level of a particular stimulus can vary both spatially and temporally. Different factors (human impact and habitat characteristics) likely to modify anti-predator behaviour in different types of guanaco social groups were analysed. We found that group size was conditioned by high poaching, vehicle traffic, predation risk and vegetation density. Solitary adult males showed shorter alert and flight initiation distances than bachelor and mixed groups. Alert distance was greater during the summer season, and assessment times were shorter when young were present in the groups. In high-predation-risk environments, guanacos detected threats at greater distances and flight initiation distance was longer. Alert distances were shorter on steeper sloped hills and assessment times were shorter in areas with irregular topography than on flat sites. In high traffic areas, flight initiation distance was longer and assessment times were shorter. And in areas with low poaching intensity, assessment times were greater than in those with high poaching levels. Therefore, guanacos may be able to evaluate a true threat. Social group and anti-predator responses were conditioned by habitat characteristics and human impact. We consider that plasticity of responses could be key to the survival of guanacos.
Palabras clave:
Behavioural Reaction
,
Human Disturbance
,
Predation Risk
,
Social Group
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Colecciones
Articulos(IADIZA)
Articulos de INST. ARG DE INVEST. DE LAS ZONAS ARIDAS
Articulos de INST. ARG DE INVEST. DE LAS ZONAS ARIDAS
Articulos(IANIGLA)
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Articulos(ICIVET-LITORAL)
Articulos de INST. DE CIENCIAS VETERINARIAS DEL LITORAL
Articulos de INST. DE CIENCIAS VETERINARIAS DEL LITORAL
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Citación
Taraborelli, Paula Andrea; Ovejero, R.; Mosca Torres, Maria Eugenia; Schroeder, Natalia; Moreno, Pablo Gastón; et al.; Different factors that modify anti-predator behaviour in guanacos (Lama guanicoe); Springer Heidelberg; Acta Theriologica; 59; 4; 10-2014; 529-539
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