Biology of Eretmocerus sudanensis n. sp. Zolnerowich and Rose, parasitoid of Bemisia tabaci GennadiusReport as inadecuate

Biology of Eretmocerus sudanensis n. sp. Zolnerowich and Rose, parasitoid of Bemisia tabaci Gennadius - Download this document for free, or read online. Document in PDF available to download.


, Volume 56, Issue 6, pp 843–850

First Online: 22 April 2011Received: 20 August 2010Accepted: 31 March 2011


Eretmocerus sudanensis = E. nr. emirates was released in 1992 into South Florida from Sudan to control Bemisia tabaci. It has since become the dominant Eretmocerus species in southwest Florida. Specimens were recovered at the Southwest Florida Research and Education Center in Collier County from a population of B. tabaci on collard Brassica oleracea, and the parasitoid described as new species, though as yet unpublished. Here we report results of studies conducted to evaluate the biology of this parasitoid of B. tabaci biotype B under laboratory controlled conditions 26°C ± 0.5, 13 h light, 62% ± 6 HR. No preoviposition period was observed for E. sudanensis. Females lived an average of 13.2 days and in this time deposited an average of 161 eggs at a mean oviposition rate of 13 eggs per day. The total compared favorably with published values for E. melanoscutus 123 eggs and was similar to E. mundus 171 eggs. E. sudanensis showed the same tendencies of preference and suitability for the intermediate host stages 2nd and 3rd as reported for these same 2 species. However, parameters such as development time from egg to adult 16 days and net reproductive rate Ro = 91.3 eggs-female were shorter and greater, respectively, compared to published results for either E. melanoscutus or E. mundus under similar conditions. Such differences in demographic parameters could indicate a significantly greater reproductive potential for E. sudanensis.

KeywordsSuitability Development Fecundity Life table Demographic parameters Handling Editor: Torsten Meiners

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Author: José A. Castillo - Philip A. Stansly


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