2008
DOI: 10.1590/s0102-09352008000400013
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Eventos externos e internos da infecção de larvas e ninfas de Rhipicephalus sanguineus por Metarhizium anisopliae

Abstract: RESUMOExaminaram-se a adesão, a germinação, a penetração e a colonização de larvas e ninfas de Rhipicephalus sanguineus por Metarhizium anisopliae, assim como as lesões infringidas pelo fungo nas respectivas fases do ciclo de vida do ácaro. Realizaram-se infecções experimentais em 11 grupos contendo 250 larvas e 11 grupos contendo 75 ninfas de R. sanguineus, por meio de banho, durante três minutos sob agitação manual, em suspensão contendo 10 8 conídios/ml do fungo. Nos grupos-controles, o banho foi realizado … Show more

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Cited by 7 publications
(4 citation statements)
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“…Accurately monitoring the development of a pathogen on its host is critical for understanding host–pathogen interactions and factors determining host resistance. The development of entomopathogenic fungi on arthropod hosts has been reported in many studies that typically describe the steps of pathogenesis using scanning or transmission electron microscopy and histology (Zacharuk, 1971; Pekrul and Grula, 1979; Kirkland et al ., 2004; Arruda et al ., 2005; Garcia et al ., 2008; Beys da Silva et al ., 2010; Ment et al ., 2010a; Leemon and Jonsson, 2012). These methods are suitable for characterizing specific developmental time points but usually do not provide a continuous, dynamic view of infection processes.…”
Section: Introductionmentioning
confidence: 99%
“…Accurately monitoring the development of a pathogen on its host is critical for understanding host–pathogen interactions and factors determining host resistance. The development of entomopathogenic fungi on arthropod hosts has been reported in many studies that typically describe the steps of pathogenesis using scanning or transmission electron microscopy and histology (Zacharuk, 1971; Pekrul and Grula, 1979; Kirkland et al ., 2004; Arruda et al ., 2005; Garcia et al ., 2008; Beys da Silva et al ., 2010; Ment et al ., 2010a; Leemon and Jonsson, 2012). These methods are suitable for characterizing specific developmental time points but usually do not provide a continuous, dynamic view of infection processes.…”
Section: Introductionmentioning
confidence: 99%
“…Metarhizium anisopliae is able to infect and kill larvae of R. sanguineus, causing tick mortalities up to 100% 9 d postinoculation and using the concentration of 1 Â 10 8 conidia/ml (Garcia et al 2008). Our results with M. anisopliae support earlier reports on the impact of the fungus on R. sanguineus, and Ixodes scapularis (Benjamin et al 2002).…”
Section: Discussionmentioning
confidence: 99%
“…Vuill. and Metarhizium anisopliae (Metchnikoff) Sorokin that cause egg and larval mortality in R. sanguineus (Monteiro 1998a,b;Garcia et al 2008), and Verticillium lecanii against Ixodes scapularis (Zhioua et al 1999).…”
mentioning
confidence: 99%
“…Most of the observations about microorganisms pathogenic to ticks are restricted to entomopathogenic fungus such as Metarhizium anisopliae and Beauveria bassiana (GARCIA et al, 2008;BITTENCOURT et al, 1999;PRETTE et al, 2005). Much less is known about other fungus species on ticks, particularly of the Amblyomma genus.…”
Section: Contentmentioning
confidence: 99%