Thermal tolerance and recovery behaviour of Thorectes lusitanicus (Coleoptera, Geotrupidae)

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Título: Thermal tolerance and recovery behaviour of Thorectes lusitanicus (Coleoptera, Geotrupidae)
Autor/es: Gallego, Belén | Verdú, José R. | Carrascal, Luis M. | Lobo, Jorge M.
Grupo/s de investigación o GITE: Biodiversidad y Biotecnología aplicadas a la Biología de la Conservación
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales | Universidad de Alicante. Centro Iberoamericano de la Biodiversidad
Palabras clave: Infrared thermography | Insect physiology | Physiological diversity | Thermal stress | Thermal tolerance | Thermoregulation
Área/s de conocimiento: Zoología
Fecha de publicación: dic-2017
Editor: Wiley
Cita bibliográfica: Ecological Entomology. 2017, 42(6): 758-767. doi:10.1111/een.12447
Resumen: 1. Population differences in physiological responses are examined in Thorectes lusitanicus, an endemic Iberian dung beetle species, by submitting individuals of different populations to the same experimental and acclimation conditions. 2. An infrared thermography protocol was used, consisting of three assays: start of activity, cold response, and heat response. Individuals of 12 populations were studied and the comparative explanatory capacities of several environmental factors in relation to the observed inter‐population differences were examined. 3. The heating rate from chill coma to the beginning of activity was the variable with the highest discrimination power among the studied populations, accounting for 94% of the observed variance. Regarding the heat response, only six of the 16 thermal variables reached significance (inter‐population differences accounted for 52–74% in these six thermal parameters). 4. From the three considered environmental factors (Mediterranean climate, land cover, and trophic characteristics) only land cover characteristics remain statistically significant, affecting the cold response of individuals. 5. Thorectes lusitanicus is a species characterised by a high diversity of thermotolerance and recovery traits across populations with a low degree of association with broad environmental factors. Finally, it is suggested that the apterous character of this species could be a determinant factor explaining the high diversity of ecophysiological traits related to thermal stress tolerance and the recovery time.
Patrocinador/es: Financial support was provided by the Spanish research project CGL2011-25544 of the Ministerio de Economía y Competitividad, as well as by the F. P. I. fellowship BES-2012-052010 to BG.
URI: http://hdl.handle.net/10045/83828
ISSN: 0307-6946 (Print) | 1365-2311 (Online)
DOI: 10.1111/een.12447
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2017 The Royal Entomological Society
Revisión científica: si
Versión del editor: https://doi.org/10.1111/een.12447
Aparece en las colecciones:INV - BBaBC - Artículos de Revistas

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