Genetic evidence for high propagule pressure and long-distance dispersal in monk parakeet (Myiopsitta monachus) invasive populations
Anders Goncalves da Silva, Jessica R Eberhard, Timothy F Wright, Michael L Avery, Michael A Russello
MOLECULAR ECOLOGY | WILEY | Published : 2010
The monk parakeet (Myiopsitta monachus) is a successful invasive species that does not exhibit life history traits typically associated with colonizing species (e.g., high reproductive rate or long-distance dispersal capacity). To investigate this apparent paradox, we examined individual and population genetic patterns of microsatellite loci at one native and two invasive sites. More specifically, we aimed at evaluating the role of propagule pressure, sexual monogamy and long-distance dispersal in monk parakeet invasion success. Our results indicate little loss of genetic variation at invasive sites relative to the native site. We also found strong evidence for sexual monogamy from patterns ..View full abstract
Awarded by National Institutes of Health
Awarded by NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES
We thank the Ortiz-Basualdo family and personnel at Estancia Santa Ana de Carpinchori and Estancia Palmira for their hospitality and assistance with fieldwork in Argentina. George Amato provided assistance during the early stages of this work. We would also like to acknowledge the contributions of J. Wright, D. Hoffmeier and J. Lindsay with Florida Power and Light Company, who provided monk parakeet samples and nest locations from south Florida; and M. Chandler, who provided monk parakeet samples and nest locations from Connecticut. We also thank Philippe Henry, Dany Garant and four anonymous reviewers, who provided constructive suggestions that improved the manuscript. Funding was provided by the American Philosophical Society (MAR), Canadian Foundation for Innovation (MAR), the National Institutes of Health grant number S06 GM008136 (TFW) and the United States Department of Agriculture (MLA).