Orientador: Angelo Pires do Prado / Tese(doutorado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-09T08:57:16Z (GMT). No. of bitstreams: 1 Barci_LeilaAparecidaGardiman_D.pdf: 32026366 bytes, checksum: 02c031128906719534741a0aa1ce434a (MD5) Previous issue date: 2007 / Resumo: o presente trabalho teve por objetivo avaliar a patogenicidade e a virulência do isolado IBCB66 de Beauveria bassiana, sobre larvas de B. microplus, com a finalidade de se utilizar esta cepa como padrão em estudos de seleção de isolados deste fungo e testar a compatibilidade da(s) melhor(es) estirpes(s) selecionada(s) com carrapaticidas comerciais. Seis suspensões (5x1O6,107,5x1O7,108,5x1O8and 1O9conidios/mL)do isolado IBCB66 foram testadas sobre larvas para avaliar a porcentagem de mortalidade e os resultados foram submetidos à análise de Probit. As observações foram realizadas até o 18° dia quando houve mortalidade total das larvas do grupo que recebeu 109 conídios/mL de suspenssão de B. bassiana...Observação: O resumo na íntegra, poderá ser visualizado no texto completo da tese digital / Abstract: The objective of this research was to evaluate the pathogenicity and the virulence of the IBCB66 isolate of B. bassiana on infected larvae of B. microplus. The IBCB66 fungus strain was used as standard in screening thirty isolates of B. bassiana against Boophilus microplus larvae . The compatibility of IBCB66 and IBCB21 isolates of the fungus with several chemical acaricides was also assessed. The larval bioassay tests using the IBCB66 isolate were carried out to determine the LC 50, LC90, LT50 and LT90 doses. The IBCB66 fungus strain was tested at six different concentrations (5x1O6,107,5xl07, 108,5xlO8and 109 conidia/rnL), to determine the percentage of larval mortality. In addition, a Probit analysis was also performed. Total larval mortality was observed eighteen days after the beginning ofthe test in the group treated with 5xl09 conidia/mL...Note: The complete abstract is available with the full electronic digital thesis or dissertations / Doutorado / Doutor em Parasitologia