First Occurrence and Population Dynamics of Blissus pulchellus (Hemiptera: Blissidae) in Brazil: a new pest of pastures in Roraima
Rev. bras. entomol
;
65(2): e20200096, 2021. tab, graf
Artículo
en Inglés
|
LILACS-Express
| LILACS
| ID: biblio-1280015
ABSTRACT
ABSTRACT 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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Rev. bras. entomol
Asunto de la revista:
Biologia
Año:
2021
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Estados Unidos
Institución/País de afiliación:
Embrapa Cerrados/BR
/
Embrapa Gado de Corte/BR
/
Embrapa Roraima/BR
/
Pontifícia Universidade Católica do Rio Grande do Sul/BR
/
Systematic Entomology Laboratory/DC
/
Universidade Federal de Roraima/BR
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