Mortalities induced by entomopathogenic fungus Metarhizium anisopliae to different ticks of economic importance using two formulations
Date
2011Author
Hedimbi M.
Kaaya Godwin P.
Chinsembu KC.
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
The objective of this study was to compare the infe
ctivity of
Metarhizium anisopliae
at a
concentration of 1 × 10
8
conidia/ml to developmental stages of
Amblyomma variegatum,
Rhipicephalus appendiculatus
and
Rhipicephalus evertsi evertsi
in oil and water formulations. The
fungus,
M. anisopliae,
induced 50-100% mortalities in all developmental s
tages of the tick species
tested.
R. e. evertsi
was more susceptible to
M. anisopliae
than the other two tick species. However,
there was no clear difference in mortality between
fed and unfed instars of different tick species.
Furthermore, engorged adults were more susceptible
than unfed adult ticks. Oil formulated conidia
induced significantly higher mortalities (P<0.05) t
han water formulated conidia. The results indicate
that the type of conidia formulation is critical to
the performance of fungi as biological control age
nts
for ticks.
URI
http://interesjournal.org/IRJM/Pdf/2011/May/Hedimbi%20et%20al.pdfhttp://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/37591