Time-lag in extinction dynamics in experimental populations: evidence for a genetic Allee effect?

ABSTRACT: 1. Propagule pressure, i.e. the number of individuals introduced, is thought to be a major predictor of the establishment success of introduced populations in the field. Its influence in laboratory experimental systems has however been questioned. In fact, other factors involved in long-term population persistence, like habitat size, were usually found to explain most of the dynamics of experimental populations. 2. To better understand the respective influence of short- and long-term factors and their potential interaction on extinction dynamics in experimental systems, we investigated the influence of propagule pressure, habitat size and genetic background on the early dynamics of laboratory-based populations of a hymenopteran parasitoid. 3. The amount of demographic variance differed bet

SUBMITTER: Vercken E 

PROVIDER: S-EPMC3708108 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature