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Stochastic dynamics in exotic and native blowflies: an analysis combining laboratory experiments and a two‐patch metapopulation model
Author(s) -
Serra Hiraldo,
Silva Izabel Cristina Rodrigues,
Mancera Paulo Fernando de Arruda,
Faria Lucas Del Bianco,
Von Zuben Cláudio José,
Von Zuben Fernando José,
Reis Sérgio Furtado,
Godoy Wesley Augusto Conde
Publication year - 2007
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1007/s11284-006-0322-3
Subject(s) - metapopulation , chrysomya megacephala , biology , ecology , extinction (optical mineralogy) , fecundity , population , calliphoridae , demography , biological dispersal , sociology , paleontology , larva
In this study we explored the stochastic population dynamics of three exotic blowfly species, Chrysomya albiceps , Chrysomya megacephala and Chrysomya putoria , and two native species, Cochliomyia macellaria and Lucilia eximia , by combining a density‐dependent growth model with a two‐patch metapopulation model. Stochastic fecundity, survival and migration were investigated by permitting random variations between predetermined demographic boundary values based on experimental data. Lucilia eximia and Chrysomya albiceps were the species most susceptible to the risk of local extinction. Cochliomyia macellaria , C. megacephala and C. putoria exhibited lower risks of extinction when compared to the other species. The simultaneous analysis of stochastic fecundity and survival revealed an increase in the extinction risk for all species. When stochastic fecundity, survival and migration were simulated together, the coupled populations were synchronized in the five species. These results are discussed, emphasizing biological invasion and interspecific interaction dynamics.