First Occurrence and Population Dynamics of Blissus pulchellus (Hemiptera: Blissidae) in Brazil: a new pest of pastures in Roraima.

Cattle production is one of the main economic activities in the state of Roraima, and insect pest attacks in pastures have a negative effect on this sector in the region. Little is known about the species that cause damage to forage fields in the state. This study presents the first report of the occurrence of the chinch bug Blissus pulchellus Montandon (Hemiptera: Blissidae) in Roraima, Brazil and a description of the population dynamics of this pest in pasture areas in this state. Pasture areas were sampled in nine municipalities of Roraima to detect the insect. The population dynamics study was conducted for two years in Alto Alegre municipality, two of which have Brachiaria brizantha cv. Marandu and one of Megathrysus maximus cv. Mombaça (Poaceae) crops. Blissus pulchellus was found in all sampled areas, except in Rorainópolis and São João da Baliza. High densities of this bug were found in in Alto Alegre. This is the first report of B. pulchellus in Brazil. The factors that affect the population dynamics and the damage caused by this insect pest to pastures as well as the risk of dispersal of this pest in Brazil are discussed.

Bibliographic Details

Main Authors:	FIDELIS, E. G., OLIVEIRA, R., BENDAHAN, A. B., CARVALHO, G. S., VALÉRIO, J. R., HENRY, T. J.
Other Authors:	ELISANGELA GOMES FIDELIS, CPAC; REGINA OLIVEIRA; AMAURY BURLAMAQUI BENDAHAN, CPAF-RR; GERVÁSIO SILVA CARVALHO; JOSÉ RAUL VALÉRIO, GADO DE CORTE; THOMAS J. HENRY.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2021-08-04
Subjects:	Percevejo, Gado, Pecuária, Planta Forrageira, Gramínea Forrageira, Praga de Planta,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133224 https://doi.org/10.1590/1806-9665-RBENT-2020-0096
Tags:	Add Tag No Tags, Be the first to tag this record!