Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/621
Título: Efeito da encapsulação na actividade do parasitóide de cochonilhas-algodão Anagyrus sp. nov. próx. pseudococci (Girault)
Autor: Passarinho, Ana Margarida Pedro
Orientador: Silva, José Carlos Franco Santos
Silva, Elsa Maria Borges da
Palavras-chave: anagyrus spec. nov. prox. pseudococci
leptomastix dactylopii
mealybugs
encapsulation
superparasitism
biological control
cochonilhas-algodão
encapsulação
superparasitismo
protecção biologica
Data de Defesa: 2009
Resumo: The encapsulation can adversely affect biological control, by reducing their parasitoid effectiveness, leading to new outbreaks of insect pests. Thus, laboratorial studies related to the capability of an insect host to prevent the development of its parasitoids by encapsulation can be of extreme importance for the evaluation of their potential as agents of biological control. The present study was aimed at investigating the influence of the host species on the encapsulation of the eggs of the parasitoid wasp Anagyrus sp. nov. near pseudococci (sensu Triapitsyn et al. 2007) (Hymenoptera: Encyrtidae) by six mealybug species (Hemiptera: Pseudococcidae), namely Planococcus citri (Risso), Planococcus ficus (Signoret), Pseudococcus calceolariae (Maskell), Pseudococcus viburni (Signoret), Paracoccus sp. and Delottococcus sp.. The parasitoid wasp Leptomastix dactylopii Howard (Hymenoptera: Encyrtidae) was selected as a comparative reference with respect to the host mealybugs P. citri, Paracoccus sp. and Delottococcus sp. The results suggest that the oviposition pattern and the encapsulation rates dependent on the combination host-parasitoid and that the parasitoid females are able to assess the physiological suitability of each host and change the oviposition pattern according to the level of host resistance.
Descrição: Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/621
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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Tese de Mestrado Ana Passarinho_Fev2009.pdf8,78 MBAdobe PDFVer/Abrir


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