Does host adaptation of Tetranychus urticae populations in clementine orchards with a Festuca arundinacea cover contribute to a better natural regulation of this pest mite?
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Other documents of the author: Aguilar-Fenollosa, Ernestina; Pina, Tatiana; Gómez-Martínez, María Antonia; Hurtado-Ruiz, Monica; Jaques , Josep A.
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http://dx.doi.org/10.1111/j.1570-7458.2012.01276.x |
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Title
Does host adaptation of Tetranychus urticae populations in clementine orchards with a Festuca arundinacea cover contribute to a better natural regulation of this pest mite?Author (s)
Date
2012Publisher
Wiley-Blackwell; The Netherlands Entomological SocietyISSN
1570-7458Type
info:eu-repo/semantics/articleSubject
Abstract
Tetranychus urticae Koch (Acari: Tetranychidae) is a key pest of clementine mandarins, Citrus clementina Tanaka (Rutaceae), in Spain. This mite is highly polyphagous and can be easily found in clementine orchards, ... [+]
Tetranychus urticae Koch (Acari: Tetranychidae) is a key pest of clementine mandarins, Citrus clementina Tanaka (Rutaceae), in Spain. This mite is highly polyphagous and can be easily found in clementine orchards, both in the trees and in the associated flora. In a previous study we found that the use of a cover of Festuca arundinacea Schreber (Poaceae) offered a better regulation of T. urticae populations than either bare soil or the traditional wild cover, which included a mix of weed species. We hypothesized that the selection of two host races of T. urticae, specialized in F. arundinacea and C. clementina, could partly explain the results obtained (bottom-up regulation). Reciprocal transplant experiments show that sympatric deme × host combinations had higher mean fitness values than the allopatric combinations in clementine, but not in F. arundinacea, for most of the fitness parameters evaluated in our study. Because local adaptation implies mean deme fitness to be systematically higher for the sympatric deme × habitat combinations than for the allopatric ones, these results can be taken as indicative of occurrence of local adaptation in T. urticae. Molecular genetic analyses with microsatellite markers support this conclusion and indicate that local adaptation of T. urticae found in our system may indeed contribute to a better natural regulation of this mite. [-]
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Entomologia Experimentalis et Applicata. 2012, Volume 144, Issue 2Rights
© 2012 The Authors Entomologia Experimentalis et Applicata © 2012 The Netherlands Entomological Society
[The definitive version is available at www3.interscience.wiley.com]
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
[The definitive version is available at www3.interscience.wiley.com]
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
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