Como o comportamento animal pode influenciar a distribuição das espécies
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2018-03-21
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Universidade Federal de Goiás
Resumo
Research in animal personality is increasing our understanding of what prevents a species from
colonizing new areas, which is one of the outstanding questions in biogeography. Some
behavioral types can perform better than others in specific stages involved in range expansion.
For example, a high exploratory behavior increases the chances of finding new resources in novel
environments. However, inconsistent results in the literature hindered a definite recognition of the
role of animal personalities on species distributions. I collected data available in the literature and
performed a bayesian meta-analysis to assess which behavioral types are driving range expansion
in the following biogeographical processes: dispersal, migration and invasion. I used several
moderators to try to discern context-dependencies in effect sizes. A hierarchical model, with
effect sizes nested within studies, revealed that more exploratory and bolder behaviors facilitate
range expansion. Also, I found that invasive individuals are more likely to be more exploratory
and more active than natives, while dispersers are generally bolder and more exploratory than
non-dispersers. Yet, the low study sample size obtained for analysis stresses the need to conduct
more primary studies. Results highlight the role of behavioral traits in species distributions and
increase our knowledge about which ecological characteristics might prepare species to endure
the current global environmental challenges.
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LIMA, Herlander Correia de. Como o comportamento animal pode influenciar a distribuição das espécies. 2018. 81 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2018.