Preliminary screening of the larvicidal effect of <bold>Brevibacillus laterosporus</bold> strains against the blowfly <bold>Chrysomya megacephala</bold>(Fabricius, 1794) (Diptera: Calliphoridae)

Carramaschi, Isabel Nogueira; Pereira, Lorrane de Andrade; Queiroz, Margareth Maria de Carvalho; Zahner, Viviane

Preliminary screening of the larvicidal effect of Brevibacillus laterosporus strains against the blowfly Chrysomya megacephala(Fabricius, 1794) (Diptera: Calliphoridae)

Carramaschi, Isabel Nogueira; Pereira, Lorrane de Andrade; Queiroz, Margareth Maria de Carvalho; Zahner, Viviane.

Afiliação

Carramaschi, Isabel Nogueira; Fundação Oswaldo Cruz. Pavilhão Herman Lent. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
Pereira, Lorrane de Andrade; Fundação Oswaldo Cruz. Pavilhão Herman Lent. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
Queiroz, Margareth Maria de Carvalho; Fundação Oswaldo Cruz. Pavilhão Herman Lent. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
Zahner, Viviane; Fundação Oswaldo Cruz. Pavilhão Herman Lent. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR

Rev. Soc. Bras. Med. Trop ; Rev. Soc. Bras. Med. Trop;48(4): 427-431, July-Aug. 2015. tab

Article em En | LILACS | ID: lil-755966

Biblioteca responsável: BR1.1

ABSTRACT

ABSTRACT

AbstractINTRODUCTION

This study evaluated whether different strains of Brevibacillus laterosporus could be used to control larvae of the blowfly Chrysomya megacephala , a pest that affects both human and animal health.

<h2>METHODS:</h2>

Mortality rates were recorded after 1-mL suspensions of sporulated cells of 14 different strains of B. laterosporus were added to 2.5g of premixed diet consisting of rotting ground beef fed to first instar larvae of C. megacephala . All bioassays were performed using 10 larvae per strain, with a minimum of three replicates for each bioassay. Larval mortality was recorded daily up to seven days.

<h2>RESULTS:</h2>

Strains Bon 707, IGM 16-92, and Shi 3 showed the highest toxicity toward the larvae producing 70.5%, 64.5%, and 51.6% of larval mortality, respectively, which was significantly higher than that in the control group (p < 0.05). In contrast, strains NRS 1642, NRS 661, NRS 590 BL 856, NRS 342, ATCC 6457, Bon 712, and NRS 1247 showed limited or no pathogenic activity against the target larvae.

<h2>CONCLUSIONS:</h2>

Our preliminary data indicated that B. laterosporus could be used to develop bioinsecticides against C. megacephala .

Assuntos

Animais; Brevibacillus/fisiologia; Dípteros/microbiologia; Controle Biológico de Vetores/métodos; Bioensaio; Dípteros/classificação; Larva/microbiologia

Palavras-chave

Biological control.; Entomopathogens; First instar larvae

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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Controle Biológico de Vetores / Dípteros / Brevibacillus Tipo de estudo: Diagnostic_studies / Screening_studies Limite: Animals Idioma: En Revista: Rev. Soc. Bras. Med. Trop Assunto da revista: MEDICINA TROPICAL Ano de publicação: 2015 Tipo de documento: Article / Project document País de afiliação: Brasil País de publicação: Brasil

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