If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Can more K-selected species be better invaders? A case study of fruit flies in La Réunion

$48.00 plus tax (Refund Policy)

Download / Buy Article:



Invasive species are often said to be r-selected. However, invaders must sometimes compete with related resident species. In this case invaders should present combinations of life-history traits that give them higher competitive ability than residents, even at the expense of lower colonization ability. We test this prediction by comparing life-history traits among four fruit fly species, one endemic and three successive invaders, in La Réunion Island. Recent invaders tend to produce fewer, but larger, juveniles, delay the onset but increase the duration of reproduction, survive longer, and senesce more slowly than earlier ones. These traits are associated with higher ranks in a competitive hierarchy established in a previous study. However, the endemic species, now nearly extinct in the island, is inferior to the other three with respect to both competition and colonization traits, violating the trade-off assumption. Our results overall suggest that the key traits for invasion in this system were those that favoured competition rather than colonization.

Keywords: Biological invasions; Tephritidae; competitive displacement; life-history traits; r–K trade-off

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1472-4642.2007.00360.x

Affiliations: 1: UMR 5175, CNRS Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), 1919 route de Mende, 34293 Montpellier Cedex, France 2: UMR 53 Peuplements Végétaux et Bio-agresseurs en Milieu Tropical CIRAD Pôle de Protection des Plantes (3P), 7 chemin de l’IRAT, 97410 St Pierre, La Réunion, France,

Publication date: September 1, 2007

Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more