AMAZONIAN ISOLATES OF Metarhizium ARE EFFECTIVE FOR KILLING Bactrocera carambolae (DIPTERA: TEPHRITIDAE) / Aislados Amazónicos de Metarhizium son efectivos para matar Bactrocera carambolae (Diptera: Tephritidae)

ABSTRACT Bactrocera carambolae Drew & Hancock is a quarantine pest present in Brazil and is the main phytosanitary barrier for the export of fresh fruits from that country. In this work, we evaluated the effect of Amazonian isolates of Metarhizium on kill larvae, pupae, and adults of B. carambolae in soil applications. The mortality of larvae and pupae in sterile soil treated with Metarhizium anisopliae was 70 %. In addition, 100 % of the adults that emerged from this substrate died up to five days later. This isolate caused the mortality of larvae and pupae in non-sterile soil, but its effect was more evident after adult emergence (70 % mortality up to ten days after emergence). Metarhizium robertsii was effective in killing larvae and pupae of the pest, especially in non-sterile soil, and caused a 60 % reduction in adult survival 50 days after emergence. These results indicated the possible use of these isolates for the control of B. carambolae, suggesting the possibility of using this biocontrol mode as another alternative in controlling this quarantine pest.

RESUMEN Bactrocera carambolae Drew & Hancock es una plaga cuarentenaria presente en Brasil y es la principal barrera fitosanitaria para la exportación de frutas frescas de este país. En este trabajo, evaluamos el efecto de los aislados amazónicos de Metarhizium para matar larvas, pupas y adultos de B. carambolae en aplicaciones de suelo. La mortalidad de larvas y pupas en suelo estéril tratado con Metarhizium anisopliae fue del 70 %. Además, el 100 % de los adultos que emergieron de este sustrato murieron hasta cinco días después. Este aislado causó la mortalidad de larvas y pupas en suelo no estéril, pero su efecto fue más evidente después de la emergencia del adulto (70 % de mortalidad hasta diez días después de la emergencia). Metarhizium robertsii fue eficaz para matar larvas y pupas de la plaga, especialmente en suelos no estériles, y causó una reducción del 60 % en la supervivencia de los adultos 50 días después de la emergencia. Estos resultados indican que es posible el uso de estos aislados para el control de B. carambolae, lo que sugiere la posibilidad de utilizar este modo de control biológico como otra alternativa para controlar esta plaga cuarentenaria.

Anastrepha species (Diptera: Tephritidae), their hosts and parasitoids in southern Amapá State, Brazil / Espécies de Anastrepha (Diptera: Tephritidae), seus hospedeiros e parasitoides no sul do estado do Amapá, Brasil

This work was carried out to record the species of Anastrepha, their host plants and associated parasitoids in Laranjal do Jari and Vitória do Jari, Amapá State. Fleshy fruits of 17 species of 13 families were sampled, from February to July of 2006, in main districts of both municipalities. Nine species of Anastrepha and six species of braconid parasitoids were sampled during this study.

O presente trabalho foi realizado com o objetivo de registrar as espécies de Anastrepha, suas plantas hospedeiras e parasitoides associados nos municípios de Laranjal do Jari e Vitória do Jari, estado do Amapá. Frutos carnosos de 17 espécies de 13 famílias foram amostrados, de fevereiro a julho de 2006, nos principais distritos dos dois municípios. Nove espécies de Anastrepha e seis espécies de braconídeos parasitoides foram coletadas durante o estudo.