Aspectos biológicos e resposta funcional de Ceraeochrysa cubana (Hagen) alimentada com o pulgão Hyadaphis foeniculi (Passerini)

• Autor(a) principal: Moreira, Marciene Dantas
• Data de Publicação: 2016
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/123456789/14570
• topic: Entomologia agrícola; Erva-doce; Afídeos; Crisopídeo; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

Fennel, Foeniculum vulgare (Mill.) is a perennial cycle plant whose therapeutic properties have given importance to farmers. However, this culture has suffered severe damage aphid Hiadaphis foeniculi (Passerini), which cause serious damage to farmers. In the biological control of pests, the lacewings are characterized by greed in young stage, and the Ceraeochrysa cubana specie (Hagen) has been recognized as an important predator help reduce the population density of aphids. Considering the importance of fennel culture as a strategy for family farming, this study aimed to evaluate the biological aspects and predatory capacity as well as the functional response of C. cubana fed H. foeniculi. To evaluate the biological aspects and predatory capacity, the treatments consisted of eggs Anagasta kuehniella (Zeller) (witness), aphid 1st and 2nd instar, aphids 3rd and 4th instars and aphids of different ages, offered to C. cubana larvae, each treatment consisting of 10 repetitions, which were evaluated on development and larval and pupal viability and the green lacewing the predation capacity. The analysis of the functional response larvae were used first, second and third instars C. cubana, which were fed on three different densities and food schemes of aphid. The design was completely randomized in a factorial 3x3x3 with 10 repetitions each treatment. To study the search time and handling C. cubana larvae in the three instars fed H. foeniculi being created in the previous instar larvae with A. kuehniella eggs and/or nymphs of H. foeniculi were used six treatments with 10 replicates each. The larval and pupal C. cubana were not affected by diet with aphids, checking up great potential for adaptation of this predator to prey in laboratory conditions. There was a stabilizing tendency in the consumer first and third instar larvae of C. cubana fed on aphids of the different instars at densities 2 and 3, and a reduced fuel consumption for second instar larvae of the green lacewing in density 3, when fired with aphids 1st and 2nd instars, with a functional response type II. The shorter searching time was given to second and third instars of the green lacewing, with no statistical difference in feed function in the preceding stage of larvae between them. As to handling time, there is no significant difference between the treatments. It was concluded that, based on the parameters evaluated, C. cubana proved to be a potential predator of H. foeniculi.