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      Ocorrência de Aprostocetus hagenowii (Hymenoptera, Eulophidae), parasitoide de ootecas da barata americana, no Rio Grande do Sul Translated title: Occurrence of Aprostocetus hagenowii (Hymenoptera, Eulophidae), parasitoid of the american cockroach oothecae at Rio Grande do Sul

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          Abstract

          Relata-se a ocorrência do parasitoide Aprostocetus hagenowii (Ratzeburg, 1952) (Hymenoptera: Eulophidae) em ooteca de Periplaneta americana Linnaeus, 1758 (Blattodea: Blattidae), no extremo Sul do Brasil. As ootecas foram coletadas no mês de dezembro de 2007, no campus da Universidade Federal de Pelotas (31°48'34"S, 52°25'42"O), Município do Capão do Leão, Rio Grande do Sul. Após a coleta, as ootecas foram acondicionadas individualmente em tubos de ensaio, sendo posteriormente mantidas em câmara climatizada a 25°C, com umidade relativa =70%, até a eclosão das ninfas ou emergência dos parasitoides. Uma das ootecas estava parasitada e apresentou 89 parasitoides (79 fêmeas e 10 machos); a referida ocorrência constitui o primeiro registro para o Sul do Brasil. O conhecimento das regiões de ocorrência dos inimigos naturais de P. americana é de grande importância para se traçar uma estratégia de controle das populações desse blatódeo.

          Translated abstract

          It is reported the occurrence of the parasitoid Aprostocetus hagenowii (Ratzeburg, 1952) (Hymenoptera: Eulophidae) in oothecae of Periplaneta americana Linnaeus, 1758 (Blattodea: Blattidae) at the extreme southern Brazil. The oothecae were collected in December of 2007 at the campus of the Universidade Federal de Pelotas (31°48'34"S, 52°25'42"W), city of Capão do Leão, Rio Grande do Sul. After the collection the oothecae were placed individually in glass vials maintained in acclimatized chamber at 25°C, with relative air humidity =70% until the eclosion of the nymphs or the emergence of the parasitoids. The infested ootheca presented 89 parasitoids (79 females and 10 males). The referred occurrence represents the first report to southern Brazil. Knowing the regions of occurrence of the natural enemies of P. americana is of great importance when developing a control strategy to the populations of the blatod.

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          Catalogo de los himenópteros brasileños de la serie parasítica incluyendo Bethyloidea

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            A reclassification of the European Tetrastichinae (Hymenoptera: Eulophidae), with a revision of certain genera

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              Cockroaches as carriers of bacteria in multi-family dwellings.

              The potential risk of bacterial dissemination due to the presence of cockroaches (Blattella germanica, Blattellidae) in low-income flats was investigated. Cockroaches can carry a great variety of bacterial species; we identified 30 different species from 52 different flats. Klebsiella oxycytoca, K. pneumoniae and Enterobacter cloacae were the most frequently found. Pathogenic and potentially pathogenic bacteria represented 54% of all the bacterial identifications. Bacteria were carried either on the cuticle or in the gut. Contamination through external contact is sufficient to insure bacterial diffusion. There was a very low level of overlap estimated by Pianka's index (a) between the bacterial flora of neighbouring blocks of flats, and (b) between bacterial flora of different flats in the same block.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria )
                1678-4596
                December 2009
                : 39
                : 9
                : 2649-2651
                Affiliations
                [1 ] Universidade Federal de Pelotas Brazil
                [2 ] Agência Paulista de Tecnologia dos Agronegócios Brasil
                Article
                S0103-84782009000900044
                74b6a6c9-57c3-4204-b96e-8c9bf64823da

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-8478&lng=en
                Categories
                AGRONOMY

                Horticulture
                biological control,Periplaneta americana,parasitoide de ootecas,controle biológico,oothecae parasitoid

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