Side-effects of pesticides on the generalist endoparasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae).

New plant protection strategies focus on minimizing chemical pesticide use and increasing their compatibility with biological control agents. The objective was to evaluate the side-effects of glyphosate, diflubenzuron, malathion, tebuconazole and triflumuron (at 720, 45, 400, 150 and 20 g ai ha -1, respectively), pesticides authorized for soybean crops in Brazil, on the parasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae) reared on Anticarsia gemmatalis (Lepidoptera: Noctuidae). The emergence and female numbers produced per P. elaeisis female were higher in A. gemmatalis pupae from caterpillars fed an artificial diet treated with glyphosate. However, emergence was lower than 50% when the caterpillars were fed on soybean leaves treated with glyphosate offered ad libitum (3-5 times). Palmistichus elaeisis died before parasiting A. gemmatalis pupae treated with malathion. Diflubenzuron reduced the P. elaesis sex ratio in the second generation. Tebuconazole and triflumuron did not cause side-effects on this parasitoid. A continuous exposure to glyphosate by the host may lead to side-effects on P. elaeisis emergence, but its moderate use is acceptable for this parasitoid. Diflubenzuron had severe transgenerational side-effects. Tebuconazole fungicide and triflumuron insecticide are compatible with P. elaeisis in sustainable integrated pest management (IPM) programs, while malathion can not be included in them.

Bibliographic Details

Main Authors:	CRUZ, R. A., ZANUNCIO, J. C., LACERDA, M. C., WILCKEN, C. F., FERNANDES, F. L., TAVARES, W. de S., SOARES, M. A., SEDIYAMA, C. S.
Other Authors:	RICARDO ALCANTARA-DE LA CRUZ, UNIVERSIDADE FEDERAL DE VIÇOSA; JOSE COLA ZANUNCIO, UNIVERSIDADE FEDERAL DE VIÇOSA; MABIO CHRISLEY LACERDA, CNPAF; CARLOS FREDERICO WILCKEN, UNESP, Botucatu-SP; FLAVIO LEMES FERNANDES, UNIVERSIDADE FEDERAL DE VIÇOSA; WAGNER DE SOUZA TAVARES, UNIVERSIDADE FEDERAL DE VIÇOSA; MARCUS ALVARENGA SOARES, UNIVERSIDADE FEDERAL DOS VALES DO JEQUITINHONHA E MUCURI, Diamantina; CARLOS SIGUEYUKI SEDIYAMA, UNIVERSIDADE FEDERAL DE VIÇOSA.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2017-09-19
Subjects:	Palmistichus elaeisis, Pesticida, Parasito, Controle biológico, Pesticides, Endoparasitoids, Biological control,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075818
Tags:	Add Tag No Tags, Be the first to tag this record!