期刊
JOURNAL OF MEDICAL ENTOMOLOGY
卷 52, 期 3, 页码 375-385出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/jme/tjv004
关键词
Aedes albopictus; Aedes notoscriptus; Australia; cohabitation; population performance index
资金
- Australian Biosecurity Co-operative Research Council for Emerging Infectious Diseases
The presence of Aedes albopictus (Skuse) in the Torres Strait of northern Australia increases the potential for colonization and establishment on the mainland. However, there is a possibility that native species that occupy the same habitats may influence the population performance of Ae. albopictus, potentially affecting the establishment of this species in Australia. Cohabitation experiments were performed with the endemic Aedes notoscriptus (Skuse), which has been found occupying the same larval habitats as Ae. albopictus in the Torres Strait and is the most widespread container-inhabiting Aedes species in Australia. The influence of environmental factors and cohabitation between the two species was examined using different climates, food resource levels, food resource types, and species densities. Survivorship proportions and a population performance index (lambda') were calculated and compared. The consequences of increased Ae. notoscriptus densities were reduced survivorship and lambda' for Ae. albopictus. Despite this, the mean lambda' of Ae. albopictus and Ae. notoscriptus was consistently >= 1.06, indicating both species could increase under all conditions, potentially due to increasing conspecific densities negatively affecting Ae. notoscriptus. The outcomes from this study suggest that the preexisting presence of Ae. notoscriptus may not prevent the establishment of Ae. albopictus in Australia.
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