Almeida, Fábio Souto and Queiroz, Jarbas Marçal (2009) Efeito da estrutura de habitat sobre a abundância de parasitóides Pseudacteon Coquillett (Diptera, Phoridae) em ninhos de Solenopsis invicta Buren (Hymenoptera, Formicidae). [Influence of habitat structure on the abundance of the parasitoids Pseudacteon Coquillett (Diptera, Phoridae) on mounds of Solenopsis invicta Buren (Hymenoptera, Formicidae).] Revista Brasileira de Entomologia, 53 (3), pp. 461-465.
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Summary in the original language of the document
Efeito da estrutura de habitat sobre a abundância de parasitóides Pseudacteon Coquillett (Diptera, Phoridae)em ninhos de Solenopsis invicta Buren (Hymenoptera, Formicidae). A influência de características do habitat na abundância dos parasitóides Pseudacteon Coquillett(Diptera, Phoridae) de Solenopsis invicta Buren (Hymenoptera, Formicidae) foi estudada em um agroecossistema orgânico diversificado no sudeste do Brasil. Os parasitóides foram coletados durante 30 minutos após a perturbação de ninhos da formiga lava-pé em áreas com culturas anuais ou perenes. Foram coletados no total 228 parasitóides de quatro espécies diferentes em 61,90% dos 84 ninhos da formiga lava-pé perturbados. Pseudacteon obtusus Borgmeier foi a espécie mais abundante (70 fêmeas), seguida por Pseudacteon litoralis Borgmeier (37 fêmeas),Pseudacteon tricuspis Borgmeier (23 fêmeas) e Pseudacteon solenopsidis Schmitz (1 fêmea). Pseudacteon litoralis foi mais freqüente em ninhos presentes nas culturas perenes que anuais enquanto que P. obtusus e P. tricuspis tiveram um padrão oposto.Correlações significativamente negativas foram encontradas para as abundâncias de P. litoralis e P. obtusus com a temperatura do ar. Houve correlação significativamente positiva entre a abundância dos parasitóides e o tamanho dos ninhos da formiga lava-pé. Considerando que os forídeos são importantes inimigos naturais de S. invicta,esse estudo fornece informações para o manejo de S. invicta em agroecossistemas tropicais diversificados.
Summary translation
Influence of habitat structure on the abundance of the parasitoids Pseudacteon Coquillett (Diptera,Phoridae) on mounds of Solenopsis invicta Buren (Hymenoptera,Formicidae). The influence of habitat characteristics on the abundance of the parasitoids Pseudacteon Coquillett (Diptera, Phoridae) of Solenopsis invicta Buren(Hymenoptera,Formicidae) was studied in organic polyculture groecosystem in southeastern of Brazil. Parasitoids were collected during 30 minutes after fire ant colonies perturbation in plots with annual or perennial crops. A total of 228 parasitoids belonging to four species were obtained in 61.90% of the 84 fire ant colonies disturbed. Pseudacteon obtusus Borgmeier was the most abundant species (70 females), followed by Pseudacteon litoralis Borgmeier (37 females), Pseudacteon tricuspis Borgmeier (23 females) and Pseudacteon solenopsidis Schmitz (1 female). Pseudacteon litoralis was more frequent on fire ant mounds in plots with perennial crops than annual crops whereas P. obtusus and P. tricuspis had an opposed pattern. Negative significant correlation was found between air temperature and P. litoralis and P. obtusus abundances. Fire ant mound size and parasitoid abundance were positively correlated. Considering that phorids are important natural enemies of S. invicta, this study provides information for the management of fire ants in tropical polyculture agroecosystem.
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Agricultura orgânica, Agroecossistema, Controle biológico, Formiga lava-pé, Heterogeneidade de habitat, Agroecosystem; Biological control; Fire ant; Habitat heterogeneity; Organic agriculture Agrovoc code: 15911 Organic agriculture, 32392 Biological control organisms, 36669 Agroecosystems, 30511 Coquillettidia, 29902 Solenopsis invicta, 29888 Ants |
| Subjects: | "Organics" in general |
| Research affiliation: | Brazil > Other organizations Brazil |
| ISSN: | 0085-5626 |
| DOI: | 10.1590/S0085-56262009000300023 |
| Deposited By: | Bernardo, Priscila |
| ID Code: | 20348 |
| Deposited On: | 14 Oct 2012 21:47 |
| Last Modified: | 14 Oct 2012 21:47 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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