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Phytophagous insects associated with endemic, macaronesian, and exotic plants in the Azores
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Abstract(s)
Entre 1991 e 1992, realizou-se a prospecção dos inimigos naturais de Myrica faya Aiton (Myricaceae), um endemismo ibero-macaronésico, considerado como uma infestante nociva, no Hawaii. A amostragem foi semanal, em dois locais da ilha de São Miguel. Efectuaram-se amostras complementares nas ilhas de São Jorge, Faial, Pico e Terceira (Açores). A partir de 1992, estudaram-se igualmente os insectos fitófagos associados a duas plantas abundantes nos biótopos de M. faya: Erica scoparia ssp. azorica (Hochstetter) (Ericaceae) um endemismo, e Pittosporum undulatum Ventenatr (Pittosporaceae) uma exótica. Encontraram-se 20 espécies de insectos fitófagos: dois Hereroptera, dez Homoptera, um Thysanoptera, dois Coleoptera, e cinco Lepidoptera. M. faya e E. scoparia ssp. azorica suportam o ciclo de vida de quatro insectos endémicos. P. undulatum funciona como abrigo ocasional para alguns insectos. Uma análise de correspondências separa as três plantas, com base nos insectos fitófagos associados a cada uma.
ABSTRACT: A survey of Myrica faya Aiton (Myricaceae) natural enemies, was performed from 1991 to 1993, in order to find potential biocontrol agents for that plant, an ibero-macaronesian endemic, considered as a noxious weed in Hawaii. Samples were collected weekly at two sites in São Miguel, and complementary at São Jorge, Faial, Pico and Terceira islands (Azores). Since 1992, the survey was extended to include phytophagous insects associated with the other dominant trees at Myrica faya stands: Erica scoparia ssp. azorica (Hochstetter) (Ericaceae) an endemic, and Pittosporum undulatum Ventenat (Pinosporaceae) an exotic plant. Only 20 species of phytophagous insects were found: two Heteroptera, ten Homoptera, one Thysanoptera, two Coleoptcra and five Lepidoptera. M. faya and E. scoparia ssp. azorica support the life-cycle of four endemic insects. P. undulatum is an occasional shelter for some insects. A correspondence analysis c1early separated the three plants, on the basis of their associated phytophagous insects.
ABSTRACT: A survey of Myrica faya Aiton (Myricaceae) natural enemies, was performed from 1991 to 1993, in order to find potential biocontrol agents for that plant, an ibero-macaronesian endemic, considered as a noxious weed in Hawaii. Samples were collected weekly at two sites in São Miguel, and complementary at São Jorge, Faial, Pico and Terceira islands (Azores). Since 1992, the survey was extended to include phytophagous insects associated with the other dominant trees at Myrica faya stands: Erica scoparia ssp. azorica (Hochstetter) (Ericaceae) an endemic, and Pittosporum undulatum Ventenat (Pinosporaceae) an exotic plant. Only 20 species of phytophagous insects were found: two Heteroptera, ten Homoptera, one Thysanoptera, two Coleoptcra and five Lepidoptera. M. faya and E. scoparia ssp. azorica support the life-cycle of four endemic insects. P. undulatum is an occasional shelter for some insects. A correspondence analysis c1early separated the three plants, on the basis of their associated phytophagous insects.
Description
Keywords
Erica scoparia ssp. azorica (Hochstetrer) Inimigos Naturais Myrica faya Pittosporum undulatum Ventenat Plantas Endémicas
Citation
SILVA, L. & J. TAVARES, (1995). Phytophagous insects associated with endemic, macaronesian and exotic plants in the Azores. “Avances en Entomología Ibérica” (ed. Comité editorial). Museo Nacional de Ciencias Naturales (CSIC) y Universidad Autónoma de Madrid: 179-188.
Publisher
Museo Nacional de Ciencias Naturales