Journal Article

Classical Biological Control of the Mealybug Phenacoccus herreni (Hemiptera: Pseudococcidae) in Northeastern Brazil

J. M. S. Bento, G. J. de Moraes, A. P. de Matos and A. C. Bellotti

in Environmental Entomology

Published on behalf of Entomological Society of America

Volume 29, issue 2, pages 355-359
Published in print April 2000 | ISSN: 0046-225X
Published online October 2014 | e-ISSN: 1938-2936 | DOI: https://dx.doi.org/10.1093/ee/29.2.355
Classical Biological Control of the Mealybug Phenacoccus herreni (Hemiptera: Pseudococcidae) in Northeastern Brazil

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The effect of native and recently introduced natural enemies of the cassava mealybug Phenacoccus herreni Cox & Williams in northeastern Brazil is reported in this article. Studies of population fluctuation of the mealybug and its natural enemies were conducted between 1994 and 1997 in three cassava fields located in Muritiba, Itaberaba, and São Gonçalo, State of Bahia. At least ≈85% of the parasitoids found in those fields were composed of the recently introduced species Apoanagyrus (=Epidinocarsis) diversicornis (Howard), Aenasius vexans (Kerrich), and Acerophagus coccois Smith. A. diversicornis was found in all fields during most of the experimental period, whereas A. coccois and A. vexans were only found in the fields where they had been released. A. diversicornis out-competed A. vexans in São Gonçalo, but not A. coccois in Itaberaba. Most predators collected belonged to the genera Hyperaspis, Nephus, and Diomus, all of the family Coccinelidae. The results of this work suggest that the concerted action of the three introduced parasitoids and the native natural enemies was sufficiently efficient to control P. herreni at low levels, in the fields where the study was conducted.

Keywords: Apoanagyrus diversicornis; Acerophagus coccois; Aenasius vexans; Encyrtidae

Journal Article.  3123 words.  Illustrated.

Subjects: Entomology

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