Title:	Population-level effects of abamectin, azadirachtin and fenpyroximate on the predatory mite Neoseiulus barak.
Authors:	LIMA, D. B. MELO, J. W. S. GONDIM JÚNIOR, M. G. C. GUEDES, R. N. C. OLIVEIRA, J. E. de M.
Affiliation:	DEBORA B. LIMA, UFRPE; JOSE W. S. MELO, UFC; MANOEL G. C. GONDIM JÚNIOR, UFRPE; RAUL N. C. GUEDES, UFV; JOSE EUDES DE MORAIS OLIVEIRA, CPATSA.
Date Issued:	2016
Citation:	Experimental and Applied Acarology, v. 70, n. 2, p. 165-177, 2016.
Description:	The coconut production system, in which the coconut mite Aceria guerreronis is considered a key pest, provides an interesting model for integration of biological and chemical control. In Brazil, the most promising biological control agent for the coconut mite is the phytoseiid predator Neoseiulus baraki. However, acaricides are widely used to control the coconut mite, although they frequently produce unsatisfactory results. In this study, we evaluated the simultaneous direct effect of dry residue contact and contaminated prey ingestion of the main acaricides used on coconut palms (i.e., abamectin, azadirachtin and fenpyroximate) on life-history traits of N. baraki and their offspring. These acaricides are registered, recommended and widely used against A. guerreronis in Brazil, and they were tested at their label rates. The offspring of the exposed predators was also evaluated by estimating the instantaneous rate of population increase (r i ). Abamectin compromised female performance, whereas fenpyroximate did not affect the exposed females (F0). Nonetheless, fenpyroximate strongly compromised the offspring (F1) net reproductive rate (R0), intrinsic rate of population growth (r i ), and doubling time (DT). In contrast, fenpyroximate did not have such effects on the 2nd generation (F2) of predators with acaricide-exposed grandparents. Azadirachtin did not affect the predators, suggesting that this acaricide can be used in association with biological control by this predatory species. In contrast, the use of abamectin and fenpyroximate is likely to lead to adverse consequences in the biological control of A. guerreronis using N. baraki.
Thesagro:	Côco Controle biológico Ácaro Doença Aceria guerreronis
NAL Thesaurus:	Biological control Phytoseiidae
Keywords:	Coconut Integrated pest managemen Plant disease
DOI:	10.1007/s10493-016-0074-x
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)