Climatic niche partitioning following successive invasions by fruit flies in La Réunion

The Journal of Animal Ecology
Pierre-François DuyckSerge Quilici

Abstract

1. Biological invasions have profound effects on community structure. The community composition following invasions can be influenced by the habitat diversity and the species' responses to abiotic factors. 2. We evaluated the tolerance to climatic factors and analysed the field distribution of four polyphagous fruit flies (Diptera: Tephritidae) of La Réunion Island (three exotic species that successively invaded the island and the endemic species Ceratitis catoirii) in order to evaluate the opportunities of coexistence by niche differentiation. 3. Atmospheric humidity and immersion in water in the laboratory greatly influence the survival of fruit fly pupae. While C. catoirii and C. rosa are very sensitive to desiccation, C. capitata and especially Bactrocera zonata are relatively tolerant. B. zonata also tolerated immersion in water much longer than did C. rosa and C. catoirii, that in turn were more resistant than C. capitata. Overall, field distributions agree with the predictions based on this study of humidity combined with previous data on the effects of temperature. 4. Climatic niche partitioning promotes coexistence between some but not all pairs of invasive species. Thus, C. rosa can coexist with both C. capitata and B...Continue Reading

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Citations

Mar 2, 2013·Bulletin of Entomological Research·Verónica Crespo-PérezIsabelle Chuine
Jul 20, 2013·Bulletin of Entomological Research·C W WeldonP W Taylor
Oct 9, 2008·Ecological Applications : a Publication of the Ecological Society of America·O DanglesJ F Silvain
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Jun 20, 2020·Ecology and Evolution·Dustin J Johnson, Zachary R Stahlschmidt
Oct 2, 2021·Communications Biology·Andrew Paul GutierrezJosé Ricardo Cure

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