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Influence of temperature on developmental parameters of the parasite/host system Edhazardia aedis (Microsporida: Amblyosporidae) and Aedes aegypti (Diptera: Culicidae)



Influence of temperature on developmental parameters of the parasite/host system Edhazardia aedis (Microsporida: Amblyosporidae) and Aedes aegypti (Diptera: Culicidae)



Journal of Invertebrate Pathology, 603: 299-303



Larvae of Aedes aegypti, transovarially infected with Edhazardia aedis, were reared between 20 and 36 degrees C to determine the influence of temperature on the development of the parasite and the infected host. Development of the parasite was evaluated based on spore yield and size. The predicted optimum temperature for maximum spore production of E. aedis in A. aegypti was 30.8 degrees C. The results demonstrate that the E. aedis-A. aegypti system has a wide temperature tolerance; whereas spore yield will be lower at unfavorable temperatures, the host will remain infected. Additionally, spores were significantly smaller from individual reared at 34 degrees C than those reared at either 20 or 27 degrees C. Development of the infected host was evaluated based on pupal weight and time of pupation. Infected pupae were significantly larger than uninfected pupae. There was also a significant difference in the pupation rate between controls and infected A. aegypti larvae. Controls had a 50% cumulative pupation time (CPT50) of 65.7 degree days and infected individuals a CPT50 of 76.6 degree days.

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Accession: 002411315

Download citation: RISBibTeXText

PMID: 1431195

DOI: 10.1016/0022-2011(92)90012-s


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