Mariana Oliveira Garrigós Leite

Mrs. Mariana Oliveira Garrigós Leite

orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 September 2022 in Microorganisms
Verified
Journal Article
Open access
PDF file
MLMariana Oliveira Garrigós Leite
Mariana Oliveira Garrigós Leite
DADenise Araujo Alves
Denise Araujo Alves
ALAntoine Lecocq
Antoine Lecocq
Jose MalaquiasJose Malaquias
Jose Malaquias
IJItalo Delalibera junior
Italo Delalibera junior
AJAnnette Bruun Jensen
Annette Bruun Jensen
The use of fungal-based biopesticides to reduce pest damage and protect crop quality is often considered a low-risk control strategy. Nevertheless, risk assessment of mycopesticides is still needed since pests and beneficial insects, such as pollinators, co-exist in the same agroecosystem where mass use of this strategy occurs. In this context, we evaluated the effect of five concentrations of three commercial entomopathogenic fungi, Beauveria bassiana, Metarhizium anisopliae, and Cordyceps fumosorosea, by direct contact and ingestion, on the tropical stingless bees Scaptotrigona depilis and Tetragonisca angustula, temperate bee species, the honey bee Apis mellifera, and the bumble bee Bombus terrestris, at the individual level. Furthermore, we studied the potential of two infection routes, either by direct contact or ingestion. In general, all three fungi caused considerable mortalities in the four bee species, which differed in their response to the different fungal species. Scaptotrigona depilis and B. terrestris were more susceptible to B. bassiana than the other fungi when exposed topically, and B. terrestris and A. mellifera were more susceptible to M. anisopliae when exposed orally. Interestingly, increased positive concentration responses were not observed for all fungal species and application methods. For example, B. terrestris mortalities were similar at the lowest and highest fungal concentrations for both exposure methods. This study demonstrates that under laboratory conditions, the three fungal species can potentially reduce the survival of social bees at the individual level. However, further colony and field studies are needed to elucidate the susceptibility of these fungi towards social bees to fully assess the ecological risks.

12 February 2018 in Journal of Chemical Ecology
Verified
Journal Article
Closed access
PDF file
WSWeliton D. Silva
Weliton D. Silva
JMJocelyn Millar
Jocelyn Millar
LHLawrence M. Hanks
Lawrence M. Hanks
CCCamila M. Costa
Camila M. Costa
MLMariana Oliveira Garrigós Leite
Mariana Oliveira Garrigós Leite
José Mauricio Simões BentoJosé Mauricio Simões Bento
José Mauricio Simões Bento