Habitat fragmentation drives inter-population variation in dispersal behavior in a Neotropical rainforest bird

摘要: Abstract Conservation ecology research, management and modeling often assume species-specific fixed traits ignoring intraspecific variation. Dispersal in animals is a heritable trait where variation should be common, as it develops via interactions between landscape behavioral processes. We conducted translocation-radio-tracking experiments novel-environment tests on Neotropical rainforest bird (Pyriglena leucoptera, Thamnophillidae) to assess whether dispersal success exploratory behavior are determined by an individual's population of origin (i.e. fragmented or continuous forest). Based model for non-optimal animal movement human-modified landscapes, we predicted that individuals evolve develop with daily exposure risky boundary matrix conditions, would have higher resistance boundary-crossing overall increased than from habitats. found birds landscapes were more resistant cross boundaries successful at crossing the relative forest. Novel-environment detected reduced scores fragments, suggesting they slower-explorers, possibly thorough assessing their environment which, turn, may enabled transit. Observed differences can emerge genetic adaptation adjustments. In any case, because P. leucoptera capable adaptive adjustments fragmentation, gradual changes encouraged minimize potential emergence behaviors landscapes.