Site fidelity and patterns of short- and long-term movement in the brilliant-thighed poison frog <Emphasis Type="Italic">Allobates femoralis</Emphasis> (Aromobatidae) |
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Authors: | Max Ringler Eva Ursprung Walter Hödl |
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Institution: | 1.Department of Evolutionary Biology,University of Vienna,Vienna,Austria |
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Abstract: | We studied movement and site fidelity of males and females of the territorial frog Allobates femoralis (Aromobatidae) in a population in the Nature Reserve “Les Nouragues” in French Guiana, South America. Observations during
3 months in 2006 ascertained intra-seasonal site fidelity for males and females. Males actively defend large multi-purpose
territories whereas females retreat to small resting sites from where they commute to neighbouring males for courtship and
mating. Female short-term movement corroborates the previous assumption of a polygynous or promiscuous resource-defence mating
system. Year-to-year recaptures from 2005 until 2008 revealed distinct patterns of inter-annual movement for males and regional
site fidelity for females. Males abandon their territories and have to re-negotiate them when reproduction starts again at
the end of the dry season. Females are not subject to intra- or inter-sexual territorial competition and as a result move
significantly less between reproductive seasons than males. Male long-term movement reflects spatial structure and prevailing
social interactions and is a reliable indicator for tadpole deposition sites. The combined effects of intra- and inter-seasonal
movement promote the diversity of mates for both sexes. |
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Keywords: | Dispersal Site fidelity Territoriality Amphibia Dendrobatoidea Movement |
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