Effects of environmental and architectural diversity of Caryocar brasiliense (Malpighiales: Caryocaraceae) on Edessa ruformaginata (Hemiptera: Pentatomidae) and its biology

ABSTRACT. We studied the effect of environmental complexity and plant architecture on the abundance and biology of Edessa rufomarginata (Hemiptera: Pentatomidae) bugs in pastures and cerrado areas. We observed higher numbers of bugs on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees in the cerrado than in the pasture areas. The bugs were more abundant on leaves and branches than they were on fruits. The fruit production of Caryocar brasiliense was higher in the pastures than in the cerrado areas. The abundance of bugs was affect positively by aluminum, organic matter, and tree height but was affected negatively by soil pH. The productivity of C. brasiliense was correlated negatively with aluminum, pH, and number of bugs but was correlated positively with phosphorus and calcium. The number of eggs per clutch was 14.3, the viability was 93% and the embryonic period was 6.9 days. We observed four nymphal instars, the sex ratio was 0.43, and the duration of the life cycle of E. rufomarginata was 156 days. We did not obtain eggs from the adults (F1), which indicated that the leaves were not a good food resource. A diverse environment and high plant crown structure favored populations of E. rufomarginata. The abundance of and the damage caused by this insect indicate that E. rufomarginata is a potential pest on C. brasiliense trees.

Bibliographic Details

Main Authors:	Leite,Germano Leão Demolin, Lopes,Paulo Sérgio Nascimento, Zanuncio,José Cola, Martins,Cristina de Paula Santos, Moreira,Thiago Marçal Borges, Costa,Renildo Ismael Félix da
Format:	Digital revista
Language:	English
Published:	Editora da Universidade Estadual de Maringá - EDUEM 2016
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212016000100019
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