Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics

The spittlebug Deois flavopicta Stal (Hom.: Cercopidae) occurs naturally on native grasses in Central Brazil in low population densities. After the introduction of African grasses, mainly of the genus Brachiaria, for cattle raising, D. flavopicta began to produce population outbreaks and became a pe...

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Publicado no:Neotropical Entomology Neotropical Entomology, Volume: 30, Issue: 4, Pages: 547-552, Published: DEC 2001
Main Authors: SUJJI, E.R., PIRES, C.S.S., FONTES, E.M.G., GARCIA, M.A.
Formato: Artigo
Idioma:English
Publicado em: Sociedade Entomológica do Brasil 2001
Assuntos:
Insecta
Dinâmica de populações
Biologia reprodutiva
Interação inseto-planta
Surtos populacionais
Population dynamics
Reproductive biology
Insect-plant interaction
Population outbreaks
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spelling oai:scielo:S1519-566X20010004000062002-06-17Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population DynamicsEfeito da Planta Hospedeira na Fecundidade da Cigarrinha-das-pastagens Deois flavopicta Stal (Homoptera: Cercopidae): Implicações na Dinâmica PopulacionalSUJJI, E.R.PIRES, C.S.S.FONTES, E.M.G.GARCIA, M.A.The spittlebug Deois flavopicta Stal (Hom.: Cercopidae) occurs naturally on native grasses in Central Brazil in low population densities. After the introduction of African grasses, mainly of the genus Brachiaria, for cattle raising, D. flavopicta began to produce population outbreaks and became a pest. Two studies were conducted, aiming to estimate the effects of a native and an exotic host plant on the fecundity of this insect. Females of D. flavopicta maintained during the adult stage on Brachiaria ruziziensis produced more eggs and lived longer than those maintained on Axonopus marginatus (a native grass widely distributed in Brazil), independently of the host plant on which the nymphs were reared. Due to the severe damage produced by adult D. flavopicta on the host plant, the effect of insect density on its own reproductive capacity was evaluated in oviposition cages containing plants of B. ruziziensis, standardized in height and stem number. Densities of one, two, three, four and six couples with virgin females were evaluated. Population densities of three couples, equivalent to 150 adults/m², or higher decreased insect's fecundity. These results contributed to the understanding of the mechanisms that determine low levels of spittlebug populations in the native grasses and promote population outbreaks in introduced ones.A cigarrinha das pastagens Deois flavopicta Stal (Hom.: Cercopidae) ocorre naturalmente em gramíneas nativas no Brasil Central em baixas densidades populacionais. Após a introdução de gramíneas africanas, principalmente do gênero Brachiaria, D. flavopicta passou a produzir explosões populacionais e tornou-se a principal praga das pastagens na região. Estudos visando comparar os efeitos da planta hospedeira nativa e da exótica sobre a fecundidade do inseto foram desenvolvidos. Fêmeas de D. flavopicta, mantidas durante a fase adulta em Brachiaria ruziziensis, produziram mais ovos e tiveram maior longevidade média que aquelas mantidas em Axonopus marginatus, independente da planta hospedeira em que foram criadas durante a fase ninfal. Devido aos danos causados pelos adultos na planta hospedeira, o efeito da densidade de indivíduos em sua própria fecundidade foi avaliado em gaiolas de oviposição contendo plantas de B. ruziziensis padronizadas no comprimento e quantidade de perfilhos. Densidades de um, dois, três, quatro e seis casais com fêmeas virgens foram avaliadas. A densidade populacional de três casais, equivalente a 150 adultos/m², ou maior que esta, reduziu a fecundidade das fêmeas. Estes estudos contribuíram para o entendimento dos mecanismos que influem para as baixas populações de cigarrinha observadas em gramíneas nativas e que promovem explosões populacionais em pastagens cultivadas com plantas introduzidas.Insectadinâmica de populaçõesbiologia reprodutivainteração inseto-plantasurtos populacionaisInsectapopulation dynamicsreproductive biologyinsect-plant interactionpopulation outbreaksSociedade Entomológica do Brasil2001-12-01rapid-communicationNeotropical Entomology, Volume: 30, Issue: 4, Pages: 547-552, Published: DEC 2001text/htmlhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400006&lng=en&tlng=enhttp://creativecommons.org/licenses/by-nc/4.0/en
institution Scientific Electronic Library Online
collection SciELO Brasil
language English
format Article
author SUJJI, E.R.
PIRES, C.S.S.
FONTES, E.M.G.
GARCIA, M.A.
spellingShingle SUJJI, E.R.
PIRES, C.S.S.
FONTES, E.M.G.
GARCIA, M.A.
Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
Neotropical Entomology
Insecta
Dinâmica de populações
Biologia reprodutiva
Interação inseto-planta
Surtos populacionais
Insecta
Population dynamics
Reproductive biology
Insect-plant interaction
Population outbreaks
author_facet SUJJI, E.R.
PIRES, C.S.S.
FONTES, E.M.G.
GARCIA, M.A.
author_sort SUJJI, E.R.
title Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
title_short Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
title_full Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
title_fullStr Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
title_full_unstemmed Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics
title_sort effect of host plant on the fecundity of spittlebug deois flavopicta stal (homoptera: cercopidae): implications on population dynamics
container_title Neotropical Entomology
container_title_facet Neotropical Entomology
container_volume 30
container_issue 4
container_startPage 547
container_endPage 552
container_reference Neotropical Entomology, Volume: 30, Issue: 4, Pages: 547-552, Published: DEC 2001
description The spittlebug Deois flavopicta Stal (Hom.: Cercopidae) occurs naturally on native grasses in Central Brazil in low population densities. After the introduction of African grasses, mainly of the genus Brachiaria, for cattle raising, D. flavopicta began to produce population outbreaks and became a pest. Two studies were conducted, aiming to estimate the effects of a native and an exotic host plant on the fecundity of this insect. Females of D. flavopicta maintained during the adult stage on Brachiaria ruziziensis produced more eggs and lived longer than those maintained on Axonopus marginatus (a native grass widely distributed in Brazil), independently of the host plant on which the nymphs were reared. Due to the severe damage produced by adult D. flavopicta on the host plant, the effect of insect density on its own reproductive capacity was evaluated in oviposition cages containing plants of B. ruziziensis, standardized in height and stem number. Densities of one, two, three, four and six couples with virgin females were evaluated. Population densities of three couples, equivalent to 150 adults/m², or higher decreased insect's fecundity. These results contributed to the understanding of the mechanisms that determine low levels of spittlebug populations in the native grasses and promote population outbreaks in introduced ones.
publisher Sociedade Entomológica do Brasil
publisher_facet Sociedade Entomológica do Brasil
publishDate 2001
topic Insecta
Dinâmica de populações
Biologia reprodutiva
Interação inseto-planta
Surtos populacionais
Insecta
Population dynamics
Reproductive biology
Insect-plant interaction
Population outbreaks
topic_facet Insecta
Dinâmica de populações
Biologia reprodutiva
Interação inseto-planta
Surtos populacionais
Insecta
Population dynamics
Reproductive biology
Insect-plant interaction
Population outbreaks
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400006&lng=en&tlng=en
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first_indexed 2022-12-19T17:58:00Z
last_indexed 2022-12-19T17:58:00Z
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