Spatial distribution of a spherical gall (Hymenoptera, Eulophidae) on Caryocar brasiliense (Caryocaraceae)

Revista Brasileira de Entomologia

Germano Leão Demolin Leite²  Vinicius De Abreu D'Ávila²  Vinicius Matheus Cerqueira²  Aline Fonseca Do Nascimento²  G. Wilson Fernandes¹ 

[1] ,Universidade Federal de Minas Gerais Insetário G. W. G. de Moraes Montes Claros MG ,Brasil

关键词: Cerrado;    galling insects;    insect distribution;    pequi;    Cerrado;    distribuição de inseto;    inseto galhador;    pequi;   

DOI  :  10.1590/S0085-56262011005000047

来源: SciELO

【 摘 要 】

We obtained the first data on spatial distribution of a spherical galling insect (Hymenoptera, Eulophidae) at the Caryocar brasiliense Camb. (Caryocaraceae) tree level. This work was developed in two pastures in Montes Claros, Minas Gerais State, Brazil. The areas studied were: pasture 1 (in activity) and pasture 2 (abandoned pasture = savanna in recovery). We evaluated the distribution of spherical galls in: foliage orientation (slope), among leaves (border and interior of the tree crown), among leaflets (right, central, left), distal, median, and proximal as well as border, central area, and adjacent to the mid leaf vein of the leaflet, and difference between areas in 10 infested trees per area. The smaller number of spherical gall/leaflet was observed in pasture 1 than in pasture 2. More spherical galls were found on the northern in pasture 1, but in the pasture 2, the lower spherical galls were observed on the northeast than other slopes. The average number of spherical galls did not differ statistically among the three leaflets of C. brasiliense in pasture 2. However, in pasture 1, we observed highest number of spherical galls in the central leaflet. More spherical galls were found in the border than interior of the tree crown. The average number of spherical galls did not differ statistically among the longitudinal region on leaflet of C. brasiliense. The spherical gall insect preferred to colonize the leaf margin than the central portion or near mid vein on transversal regions on a leaflet.

【 授权许可】

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