Landscape resistance influences effective dispersal of endangered golden lion tamarins within the Atlantic Forest

摘要: Abstract Habitat fragmentation threatens tropical rainforests, which can significantly hinder dispersal in species such as arboreal primates. For conservation actions to be effective there must an understanding of how landscape structure and biological traits shape dispersal. We assessed the effects landscape, sex population management (reintroductions translocations) on gene flow Leontopithecus rosalia, endangered primate living highly fragmented forests Brazil. genotyped 201 individuals using 14 microsatellite loci answer three questions: (1) How far does L. rosalia disperse? (2) Is sex-biased? (3) What are relative contributions management, distance, roads resistance genetic kinship? hypothesized that decrease between more distant sites; males disperse than females; land-cover (i.e. resistance) variables most influence kinship. found positive spatial population-structure up 8 km. The was similar females suggesting they equally contribute flow. Management best explained kinship, showing different types affect at degrees permeability. advocate maintaining permeable landscapes is essential ensure mammals. Conservation measures rainforests take into account not only habitat amount, but also degree each land use – roads, urban areas, agriculture, pasture, isolated trees, stepping stones facilitates or impedes