Oviposition habitat selection for a predator refuge and food source in a mosquito
Abstract. 1. The influence of filamentous algae on oviposition habitat selection by the mosquito Anopheles pseudopunctipennis and the consequences of oviposition decisions on the diet, development, body size, and survival of offspring were examined. 2. A natural population of An. pseudopunctipennis in Chiapas, Mexico, oviposited almost exclusively in containers with filamentous algae. Algae represented 47% of the gut contents of mosquito larvae sampled from the natural population. Mosquito larvae fed on an exclusive diet of algae developed as quickly and achieved the same adult body size (wing length) as their conspecifics fed on a standard laboratory diet. 3. Multiple regression of survival of mosquito larvae on percentage surface area cover of algae (0-99%) and the density of predatory fish (zero to four fish per container) was best described by a second-order polynomial model. Increasing fish densities resulted in a reduction in mosquito survival in all algal treatments. The highest incidence of survival was observed at intermediate (66%) algal cover in all treatments.
| Main Authors: | , , , , |
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| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | Anopheles pseudopunctipennis, Spirogyra majuscula, Cladophora glomerata, Algas filamentosas, Oviposición, Depredación, Artfrosur, |
| Online Access: | http://onlinelibrary.wiley.com/doi/10.1111/j.0307-6946.2005.00704.x/abstract |
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