Data/hora: 25/06/2024 18:56:44

Biblioteca(s): | Embrapa Agroindústria Tropical.
Data corrente: | 04/09/1993
Data da última atualização: | 11/04/2011
Autoria: | MONTEITH, L. G.
Título: | Influence of plants other than the food plants of their host on host-finding by tachinid parasites.
Ano de publicação: | 1960
Fonte/Imprenta: | The Canadian Entomologist, v.92, n.9, p.641-652, Sep. 1960.
Idioma: | Inglês
Conteúdo: | Host-finding by tachinid parasites is influenced by plants other than those fed on by the tenthredinid sawflies that they attack. In the field, the percentage of larvae of the larch sawfly, Pristiphora erichsonii (Htg.), attacked by Bessa harveyi Tns. varies with their positions on Larix laricina (DuRoi) K. Koch trees relative to the positions of other plants. Host-finding by B. harveyi is influenced by the presence of shrubs beneath the L. laricina trees and by the close proximity of Picea gauxca (Moench) Voss or other species of trees. The effect was not caused by temperature, light intensity or air velocity. In the laboratory, tests with Drino bohemica Mesn. of olfactory stimuli from food plants and non-food plants showed that the latter tend to mask the odours of host larvae and of their food plants. The masking effect could be of importance in aiding a larger proportion of the sawfly population to survive.
Palavras-Chave: | Diversidade; Parasitas; Pragas.
Thesagro: | Ecologia.
Categoria do assunto: | --
Registro original: | Embrapa Agroindústria Tropical (CNPAT)
Exemplares: | CNPAT - (760-1) - EMB - SP - PP - SP 01025 -  - 92.01025 - DIS