Biological aspects of Blissus pulchellus Montadon (Hemiptera: Blissidae) regarding the resistance of forage poaceae

J.E Simon,R.O Silva,R.D Medeiros,E.S Silva,E.G Fidelis,A.B Bendahan,A.C.S Lima,D.A Schurt

doi:10.5039/agraria.v16i4a8718

Abstract

The objective of this study is to evaluate the biological development of the chinch bug, Blissus pulchellus regarding the resistance of the eight forage poaceae. For that, chinch bugs collected from a pasture area, in Boa Vista, Roraima, Brazil, were taken to the Embrapa Roraima Entomology Laboratory for evaluation. The mass breeding of B. pulchellus was carried out in B.O.D., on Urochloa ruziziensis and the biological development evaluation was carried out on eight forage poaceae: Urochloa ruziziensis, U. humidicola, U. brizantha cv. Marandú, U. brizantha cv. Piatã, U. brizantha cv. Paiaguás, Panicum maximum cv. Mombaça, P. maximum cv. Zuri and Andropogon gayanus. The results obtained allowed us to conclude that: a) A. gayanus, P. maximum cv. Zuri and U. humidicola, negatively affect the biology of B. pulchellus; b) A. gayanus, P. maximum cv. Zuri present high and moderate resistance U. humidicola, of the type antibiosis to B. pulchellus and c) Urochloa ruziziensis, U. brizantha cv. Paiaguás and U. brizantha cv. Piatã, have high grade and P. maximum cv. Mombasa and U. brizantha cv. Marandú, less susceptibility to B. pulchellus.

Highlights

Bed bugs of the genus Blissus, known as the Grasshopper, have a wide geographic distribution and are found in many different regions of the world, with the exception of Australia (Spike et al, 1993)
The objective of this study is to evaluate the biological development of the chinch bug, Blissus pulchellus regarding the resistance of the eight forage poaceae
The objective of the present study is to evaluate the biological development of the grasshopper bug, B. pulchellus, regarding the resistance of eight forage plants

Summary

Introduction

Bed bugs of the genus Blissus, known as the Grasshopper, have a wide geographic distribution and are found in many different regions of the world, with the exception of Australia (Spike et al, 1993). They are specialized on poaceae and many of them are considered important pests on crops of corn (Zea mays), wheat In Brazil, so far, only four species of grasshoppers, Blissus busq, Blissus antillus, Blissus leucopterus, and Blissus pulchellus (Hemiptera: Blissidae) have been recorded as occurring in the country (Pereira & Silva, 1988; Valério et al, 2015; Simon et al, 2016). Mombaça (Simon et al, 2016), this being the first report of B. pulchellus in Brazil (Silva, 2018)

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Conclusion