Comparison of two populations of the pantropical predator Amblyseius largoensis (Acari: Phytoseiidae) for biological con
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Comparison of two populations of the pantropical predator Amblyseius largoensis (Acari: Phytoseiidae) for biological control of Raoiella indica (Acari: Tenuipalpidae) Cleiton A. Domingos • Leandro O. Oliveira • Elisaˆngela G. F. de Morais Denise Navia • Gilberto J. de Moraes • Manoel G. C. Gondim Jr.
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Received: 31 May 2012 / Accepted: 29 September 2012 / Published online: 26 October 2012 Ó Springer Science+Business Media Dordrecht 2012
Abstract The red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae), was recently introduced in the Americas. It spread quickly throughout coconut palm growing areas, expanding considerably its host range. The invasion of this species has caused high economic impact in several countries. In Brazil, extensive areas are expected to be affected. For logistical reasons and other concerns, chemical control does not seem desirable for the control of this pest in most Latin American countries. Biological control of R. indica by introducing exotic natural enemies seems to be an important control measure to be considered. Surveys in many countries have shown that Amblyseius largoensis (Muma) (Acari: Phytoseiidae) is a very common predator on coconut palms. This study compared the biology of a population of A. largoensis found for a long time in association with R. indica in La Reunion Island (Indian Ocean) with a population from Roraima State (northern Brazil), where R. indica was first found about two and a half years ago. No significant differences were observed between populations in relation to the duration of different immature stages or total survivorship. However, the oviposition period, prey consumption and net reproductive rate were significantly higher for the La Reunion population, C. A. Domingos M. G. C. Gondim Jr. (&) ´ rea de Fitossanidade, Universidade Federal Rural de Pernambuco, Recife, Depto. Agronomia, A PE 52171-900, Brazil e-mail: [email protected] L. O. Oliveira E. G. F. de Morais Laborato´rio de Entomologia, Embrapa Roraima, BR 174, Km 8, Distrito Industrial, Caixa Postal 133, Boa Vista, RR 69301-970, Brazil e-mail: [email protected] D. Navia Laborato´rio de Quarentena Vegetal, Embrapa Recursos Gene´ticos e Biotecnologia, Parque Estac¸a˜o Biolo´gica, final w5 Norte, Caixa Postal 02372, Brası´lia, DF CEP 70.770-900, Brazil e-mail: [email protected] G. J. de Moraes Depto. Entomologia e Acarologia, Escola Superior de Agricultura ‘‘Luiz de Queiroz’’, Universidade de Sa˜o Paulo, Piracicaba, SP 13418-900, Brazil e-mail: [email protected]
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Exp Appl Acarol (2013) 60:83–93
warranting further investigation to determine whether that population should be released in Roraima to control the pest. Keywords Coconut palm Red palm mite Phytoseiid Biological control Arecaceae Quarantine pest
Introduction The genus Raoiella Hirst (Acari: Tenuipalpidae) consists of twelve valid described species known until recently from the Palaearctic, Afrotropical, Oriental and Australian regions (Mesa et al. 2009), in addition to nine possible
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