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	Provedor de dados Neotropical Entomology (1) Rev. Bras. entomol. (1) Autor Cornelissen,T (1) Lopes-da-Silva,Marcelo (1) Vieira,Luiz Gonzaga Esteves (1) Palavra-chave Insect-plant relationships (2) Elevated CO2 (1) Genetic diversity (1) Host-races (1) Rose-Grain Aphid (1) Trophic interaction (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2011 (1) 2007 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Climate change and its effects on terrestrial insects and herbivory patterns Neotropical Entomology Cornelissen,T. Climate change and extreme weather events affect plants and animals and the direct impact of anthropogenic climate change has been documented extensively over the past years. In this review, I address the main consequences of elevated CO2 and O3 concentrations, elevated temperature and changes in rainfall patterns on the interactions between insects and their host plants. Because of their tight relationship with host plants, insect herbivores are expected to suffer direct and indirect effects of climate change through the changes experienced by their host plants, with consequences to population dynamics, community structure and ecosystem functioning. Tipo: Info:eu-repo/semantics/article Palavras-chave: Elevated CO2; Insect-plant relationships; Trophic interaction. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200001 Analysis of the genetic diversity in Metopolophium dirhodum (Walker) (Hemiptera, Aphididae) by RAPD markers Rev. Bras. entomol. Lopes-da-Silva,Marcelo; Vieira,Luiz Gonzaga Esteves. The emergence of host-races within aphids may constitute an obstacle to pest management by means of plant resistance. There are examples of host-races within cereals aphids, but their occurrence in Rose Grain Aphid, Metopolophium dirhodum (Walker, 1849), has not been reported yet. In this work, RAPD markers were used to assess effects of the hosts and geographic distance on the genetic diversity of M. dirhodum lineages. Twenty-three clones were collected on oats and wheat in twelve localitites of southern Brazil. From twenty-seven primers tested, only four primers showed polymorphisms. Fourteen different genotypes were revealed by cluster analysis. Five genotypes were collected only on wheat; seven only on oats and two were collected in both hosts. Genetic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Rose-Grain Aphid; Genetic diversity; Host-races; Insect-plant relationships. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262007000100009 Registros recuperados: 2 Primeira ... 1 ... Última

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