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    Effect of temperature, humidity and photoperiod on mortality of Mononychellus tanajoa (Acari: tetranychidae) infected by Neozygites cf. floridana (Zygomycetes: entomophthorales)

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    Date
    1995
    Author
    Oduor, G.I.
    Moraes, G.J. de
    Yaninek, J.
    Geest, L.P. van der
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The effect of temperature, humidity and photoperiod on the development of Neozygites cf. floridana (Weiser and Muma) in the cassava green mite, Mononychellus tanajoa (Bondar) was studied in the laboratory. Dead infected mites began to appear 2.5 days after inoculation. At 33 and 28°C peak mortalities were higher and occurred earlier (after 2.5 days), than at 23 and 18°C. Mean LT50 (time for half the infected mites to die) decreased with increasing temperature as follows: 3.9, 3.0, 2.9 and 2.5 days at 18, 23, 28 and 33°C, respectively. When placed under conditions of high relative humidity for a period of 24 h, the percentage of dead infected mites from which the fungus sporulated was highest at 28°C (51.4%) and lowest at 33°C (6.5%). The development of the fungus inside the mite was not significantly affected by ambient humidity or photoperiod. No significant interactions between tested factors were found.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5756
    IITA Subjects
    Climate Change; Cassava; Pests Of Plants; Disease Control
    Agrovoc Terms
    Humidity; Cassava; Pests; Biological Control
    Regions
    Acp; Africa; Europe; South America; West Africa
    Countries
    Netherlands; Brazil; Benin
    Collections
    • Journal and Journal Articles4475
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