Pachycondyla obscuricornis as natural enemy of the spittlebug Deois flavopicta

The objective of this work was to evaluate the potential control of the ant Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) on populations of nymphs of the spittlebug, Deois flavopicta Stal (Hemiptera Cercopidae). Foraging behavior and prey consumption rate of P. obscuricornis were evaluat...

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Veröffentlicht in:Pesquisa agropecuaria brasileira 2004-06, Vol.39 (6), p.607-609
Hauptverfasser: Suji, E.R, Garcia, M.A, Fontes, E.M.G, O'Neil, R.J
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container_issue 6
container_start_page 607
container_title Pesquisa agropecuaria brasileira
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creator Suji, E.R
Garcia, M.A
Fontes, E.M.G
O'Neil, R.J
description The objective of this work was to evaluate the potential control of the ant Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) on populations of nymphs of the spittlebug, Deois flavopicta Stal (Hemiptera Cercopidae). Foraging behavior and prey consumption rate of P. obscuricornis were evaluated. Field data revealed that P. obscuricornis does not show aggressive behavior against individuals of the same species, when they are not carrying a prey; they can patrol distances larger than 10 m searching for prey, and they can build their nest as close as 1 m from each other. The ant has a solitary patrolling habit, there is no recruitment behavior, and individuals dislocate fast, browsing on soil and vegetation for prey. Predation rate on spittlebug nymphs increased relative to the spittlebug abundance, reaching 93.8% of captured prey. Pachycondyla obscuricornis is a voracious predator and may control the population of spittlebugs in cultivated pastures. O objetivo deste trabalho foi avaliar se a formiga Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) pode atuar no controle biológico de populações de ninfas da cigarrinha-das-pastagens, Deois flavopicta Stal (Hemiptera Cercopidae). Foram estudados o comportamento de caça da formiga e sua taxa de consumo da presa. Pachycondyla obscuricornis não apresenta comportamento agressivo em relação a indivíduos da mesma espécie, quando estes não carregam presas; pode deslocar-se por distâncias superiores a 10 m em busca de presas e pode nidificar a até 1 m de ninhos da mesma espécie. A formiga apresentou hábito de caça solitário, ausência de recrutamento, e deslocamento rápido pela vegetação. A taxa de predação aumentou com a abundância da cigarrinha, chegando a representar 93,8% das presas capturadas. Pachycondyla obscuricornis é predadora voraz e representa potencial agente de controle de populações da cigarrinha-das-pastagens em pastagens cultivadas.
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Foraging behavior and prey consumption rate of P. obscuricornis were evaluated. Field data revealed that P. obscuricornis does not show aggressive behavior against individuals of the same species, when they are not carrying a prey; they can patrol distances larger than 10 m searching for prey, and they can build their nest as close as 1 m from each other. The ant has a solitary patrolling habit, there is no recruitment behavior, and individuals dislocate fast, browsing on soil and vegetation for prey. Predation rate on spittlebug nymphs increased relative to the spittlebug abundance, reaching 93.8% of captured prey. Pachycondyla obscuricornis is a voracious predator and may control the population of spittlebugs in cultivated pastures. O objetivo deste trabalho foi avaliar se a formiga Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) pode atuar no controle biológico de populações de ninfas da cigarrinha-das-pastagens, Deois flavopicta Stal (Hemiptera Cercopidae). Foram estudados o comportamento de caça da formiga e sua taxa de consumo da presa. Pachycondyla obscuricornis não apresenta comportamento agressivo em relação a indivíduos da mesma espécie, quando estes não carregam presas; pode deslocar-se por distâncias superiores a 10 m em busca de presas e pode nidificar a até 1 m de ninhos da mesma espécie. A formiga apresentou hábito de caça solitário, ausência de recrutamento, e deslocamento rápido pela vegetação. A taxa de predação aumentou com a abundância da cigarrinha, chegando a representar 93,8% das presas capturadas. 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Foram estudados o comportamento de caça da formiga e sua taxa de consumo da presa. Pachycondyla obscuricornis não apresenta comportamento agressivo em relação a indivíduos da mesma espécie, quando estes não carregam presas; pode deslocar-se por distâncias superiores a 10 m em busca de presas e pode nidificar a até 1 m de ninhos da mesma espécie. A formiga apresentou hábito de caça solitário, ausência de recrutamento, e deslocamento rápido pela vegetação. A taxa de predação aumentou com a abundância da cigarrinha, chegando a representar 93,8% das presas capturadas. 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Foraging behavior and prey consumption rate of P. obscuricornis were evaluated. Field data revealed that P. obscuricornis does not show aggressive behavior against individuals of the same species, when they are not carrying a prey; they can patrol distances larger than 10 m searching for prey, and they can build their nest as close as 1 m from each other. The ant has a solitary patrolling habit, there is no recruitment behavior, and individuals dislocate fast, browsing on soil and vegetation for prey. Predation rate on spittlebug nymphs increased relative to the spittlebug abundance, reaching 93.8% of captured prey. Pachycondyla obscuricornis is a voracious predator and may control the population of spittlebugs in cultivated pastures. O objetivo deste trabalho foi avaliar se a formiga Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) pode atuar no controle biológico de populações de ninfas da cigarrinha-das-pastagens, Deois flavopicta Stal (Hemiptera Cercopidae). 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subjects AGRICULTURE, DAIRY & ANIMAL SCIENCE
AGRICULTURE, MULTIDISCIPLINARY
BIOLOGICAL CONTROL
CIGARRINHA DAS PASTAGENS
comportamento de forrageamento
CONTROLE BIOLOGICO
controle biológico
DEOIS FLAVOPICTA
foraging behavior
INIMIGO NATURAL
Insecta
NATURAL ENEMIES
PREDADOR
PREDATION
PREDATORS
predação
title Pachycondyla obscuricornis as natural enemy of the spittlebug Deois flavopicta
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