Eurytoma sp. - agente promissor para o controle biológico do araçazeiro no Havaí
Author(s) -
Charles Wikler,
J. H. Pedrosa Macedo
Publication year - 1997
Publication title -
floresta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.386
H-Index - 13
eISSN - 1982-4688
pISSN - 0015-3826
DOI - 10.5380/rf.v27i12.2300
Subject(s) - biology , psidium , myrtaceae , botany , horticulture , hymenoptera , biological pest control , larva
Uma especie do genero Eurytoma (Hymenoptera, Eurytomidae) causa a galha-do-ramo do aracazeiro - Psidium cattleianum Sabine, 1821 (Myrtaceae). O inseto nao foi identificado a nivel de especie, mas seus aspectos bioecologicos foram estudados em laboratorio e em campo. E um possivel agente para o controle biologico do aracazeiro que e planta daninha invasora em varios paises. As coletas foram realizadas no primeiro planalto do Parana. Estudou-se varios parâmetros de Eurytoma sp.: forma, cor, numero de segmentos do corpo, largura da cabeca, comprimento do corpo, mortalidade e ciclo de desenvolvimento na fase larval; duracao, tamanho, comprimento na fase pupal; copula, proporcao sexual, longevidade de machos e femeas, comportamento no acasalamento e alimentacao na fase adulta. A galha e um dos fatores limitantes do aracazeiro, sendo a atividade larval a principal causa de danos na planta. Durante o ano seguinte a emergencia do adulto, a galha seca, todas as folhas caem e o ramo morre, estabilizando o crescimento do aracazeiro. Eurytoma sp. - agent promising for biological control of strawberry guava in Hawaii Abstract A species from Eurytoma (Hymenoptera, Eurytomidae) genus causes a gall in the stems of strawberry guava - Psidium cattleianum Sabine, 1821 (Myrtaceae). The insect was not identified in the specie level, but its biecological aspects were studied in laboratory and fields conditions, seeking the possible use as specific natural enemy of the strawberry guava. Sample collection was done in the first plateau of Parana State, natural occurrence area of the plant. It was determined the following parameters for Eurytoma sp.: shape, color, number of segments of the body, width of the head, length of the body, mortality, development in larval phase, duration, size, development and length in pupa phase, and copulation, sexual rate, longevity of males and females, copulation behavior and feeding in the adult phase. The gall is one of the limiting factors of strawberry guava, being the larval activity of Eurytoma sp. the main cause of the damages. After the first year of adult emergence, the gall dries out and in the next year the stem dies, stabilizing the strawberry guava growth.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom