Potencial predatório de Carabidae e Staphylinidae (Coleoptera) sobre a lagarta-da-soja

Abstract

Resumo -O objetivo deste trabalho foi avaliar o potencial predatório de besouros adultos de Carabidae e Staphylinidae (Coleoptera) sobre lagartas de quarto instar da lagarta-da-soja, em laboratório. Inicialmente, avaliou-se a capacidade de consumir uma lagarta por 24 horas. Para as espécies que causaram ≥80% de mortalidade da presa, determinou-se a taxa de consumo, tendo-se oferecido uma lagarta por 24 horas, durante quatro dias consecutivos. Os carabídeos Calosoma granulatum, Cynthidia croceipes, Odontocheila nodicornis e Pseudabarys sp. 1; as espécies dos gêneros Galerita, Scarites e Tetracha; e os estafilinídeos Eulissus chalybaeus, Glenus cyanicollis e Xenopygus sp. 2 apresentam elevado potencial predatório.Termos para indexação: Anticarsia gemmatalis, consumo de presa, controle biológico, predadores. Predatory potential of Carabidae and Staphylinidae (Coleoptera) on the velvetbean caterpillarAbstract -The objective of this work was to evaluate the predatory potential of adult Carabidae and Staphylinidae (Coleoptera) beetles on fourth-instar larvae of the velvetbean caterpillar, in the laboratory. Initially, the capacity to consume one caterpillar during 24 hours was evaluated. For species that caused ≥80% mortality of the prey, the consumption rate was determined, by offering one caterpillar during 24 hours for four consecutive days. The carabids Calosoma granulatum, Cynthidia croceipes, Odontocheila nodicornis, and Pseudabarys sp. 1; the species of the Galerita, Scarites, and Tetracha genera; and the staphylinids Eulissus chalybaeus, Glenus cyanicollis, and Xenopygus sp. 2 show great predatory potential.

Population survey of predatory insects in sugarcane in the municipality of União, Piauí state, Brazil, using light trap

“…For Quinteiro et al (2012), Carabidae has the highest number of species with predatory habits among beetles. For Cividanes et al (2014), Carabidae and Staphylinidae have great importance as biological control agents. Regarding predators, the result found in this study, although conducted in different conditions, has similarities to the survey done by Macedo & Araújo (2000) in sugarcane, whose result found Carabidae predator predominance.…”

Edge effects on carabid beetles (Coleoptera: Carabidae) between forest fragments and agricultural fields in south‐east Brazil

“…From the viewpoint of biological control of pests in crops, the abundance and species richness of carabids in crops are crucial to reduce pest populations (Sunderland , Saska et al ). Here, almost all species found in the soybean/corn crop during the growing season had already demonstrated potential as biocontrol agents in a study which identified carabids with a high capacity to kill and consume Anticarsia gemmatalis (Hübner) larvae, a major soybean pest in Brazil (Cividanes et al ), and therefore they can play an important role in controlling soybean/corn pests. The following species showed the most potential as biocontrol predators : A. basistriata , C. granulatum , Galerita brasiliensis Dejean, T. brasiliensis , S. alternans , Selenophorus discopunctatus Dejean, Selenophorus sp.…”

Population dynamics and spatial distribution of the Calosoma granulatum Perty., 1830 (Coleoptera: Carabidae) in soybean/corn crop

“…1830, is a predator carabid commonly found in areas cultivated with soybeans (Brondani et al, 2008;Lietti et al, 2008). In laboratory studies, this species consumed a great number of Anticarsia gemmatalis Hübner, 1818 larvae causing high mortality rates (above 90%) (Pasini 1991(Pasini , 1995Cividanes et al, 2014).…”