2024-03-29T14:55:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1273562021-12-28T16:06:50Zcom_10261_13com_10261_8col_10261_266
00925njm 22002777a 4500
dc
Carrete, Martina
author
Tella, José Luis
author
2015
Despite the importance of behaviour in conservation biology, there have been few studies that
address behaviour in areas such as invasion ecology. There is an urgent need to identify specific traits
that facilitate the establishment and spread of alien species to prevent biological invasions and their
impact on biodiversity. Changes in antipredatory behaviour in captivity have been proposed to explain
the higher invasiveness of wild-caught exotic species. We experimentally tested this hypothesis by
assessing the response of wild-caught and captive-bred cage birds facing an approaching predator and
their ability to escape from human capture, using species available in the Spanish pet market. Results
showed the loss of antipredatory responses and escape abilities in captive-bred birds compared with
wild-caught ones. An intraspecific comparison between wild-caught and the first generation of captivebred
birds pointed to a rapid behavioural loss in captivity (individual lifetime) rather than to differences
among species (evolutionary exposure). In the context of current avian invasions, the proportion of
individuals showing antipredatory responses within a species was positively related to the likelihood of
the species being found escaped and breeding in the wild. These results offer a link between behaviour,
fitness, and the invasion syndrome in birds
Scientific Reports, 5:18274 (2015)
http://hdl.handle.net/10261/127356
10.1038/srep18274
26667185
Rapid loss of antipredatory behaviour in captive-bred birds is linked to current avian invasions