Cuticular hydrocarbons discriminate cryptic Macrolophus species (Hemiptera: Miridae)
| Autor: | N. Laserna, Oscar Alomar, Magí Riba, Cristina Castañé, Joan Valls, César Gemeno |
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| Rok vydání: | 2012 |
| Předmět: |
Male
Species complex Biological pest control Zoology Dark spot Hemiptera Species Specificity Animals Pest Control Biological Taxonomy Sex Characteristics biology Discriminant Analysis General Medicine Scutellum biology.organism_classification Miridae Hydrocarbons Insect Science Biological control Macrolophus pygmaeus Taxonomy (biology) Female Agronomy and Crop Science Cuticular hydrocarbons |
| Zdroj: | Repositorio Abierto de la UdL Universitad de Lleida |
| Popis: | Macrolophus pygmaeus is commercially employed in the biological control of greenhouse and field vegetable pests. It is morphologically undistinguishable from the cryptic species M. melanotoma, and this interferes with the evaluation of the biological control activity of M. pygmaeus. We analysed the potential of cuticular hydrocarbon composition as a method to discriminate the two Macrolophus species. A third species, M. costalis, which is different from the other two species by having a dark spot at the tip of the scutellum, served as a control. Sex, diet and species, all had significant effects in the cuticular hydrocarbon profiles, but the variability associated to sex or diet was smaller than among species. Discriminant quadratic analysis of cuticular hydrocarbons confirmed the results of previous molecular genetic studies and showed, using cross-validation methods, that M. pygmaeus can be discriminated from M. costalis and M. melanotoma with prediction errors of 6.75% and 0%, respectively. Therefore, cuticular hydrocarbons can be used to separate M. pygmaeus from M. melanotoma reliably. |
| Databáze: | OpenAIRE |
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