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    Bionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansi

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    Date
    2007
    Author
    Fiaboe, K.M.
    Gondim, M.G.
    Moraes, G.J. de
    Ogol, C.K.
    Knapp, M.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The bionomics of Stethorus tridens Gordon fed Tetranychus evansi Baker & Pritchard were studied in the laboratory. The number of prey consumed by S. tridens increased with increasing instar levels and the total mean number consumed during immature development was 184.1 ± 18.02 T. evansi nymphs per individual. For adult male and adult female, the daily consumption was 41.3 ± 0.80 and 67.8 ± 1.69 nymphs, respectively. Stethorus tridens successfully developed to adulthood between 20 and 30°C but failed at 10, 15 and 35°C. The lower thermal threshold for egg-to-adult development estimated via linear regression and the modified Logan model was 9.2 and 8.1°C, respectively. The optimum and maximum temperatures for egg-to-adult development were around 29–31 and 32.9°C, respectively. Egg to adult development time was 23.8 ± 0.24, 17.4 ± 0.22, 16.2 ± 0.22 and 12.1 ± 0.16 days at 20, 24, 27 and 30°C, respectively. At 27°C, the sex ratio, expressed as the proportion of females, was 0.54 and the mean preoviposition, oviposition and postoviposition periods were 10.3 ± 0.67, 31.2 ± 4.74 and 30.2 ± 5.24 days, respectively. The oviposition rate was 4.0 ± 0.16 eggsfemaleday with a female mean longevity of 71.6 ± 6.19 days and an intrinsic rate of natural increase of 0.104. The potential of S. tridens as a candidate natural enemy of T. evansi is discussed.
    https://doi.org/10.1111/j.1439-0418.2007.01189.x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3494
    Digital Object Identifier (DOI)
    https://doi.org/10.1111/j.1439-0418.2007.01189.x
    IITA Subjects
    Pests Of Plants; Plant Genetic Resources; Plant Diseases; Livelihoods; Disease Control; Plant Production; Plant Breeding; Farming Systems; Farm Management; Crop Husbandry
    Agrovoc Terms
    Biological Control; Life Table; Predators; Prey Consumption; Stethorus Tridens; Tetranychus Evansi; Oviposition
    Regions
    Africa; Acp; East Africa; South America
    Countries
    Kenya; Brazil; Uganda
    Collections
    • Journal and Journal Articles4835
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