Bionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansi

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dc.contributor.authorOgol, C.K.P.O.
dc.contributor.authorFiaboe, K. K. M.
dc.contributor.authorGondim Jr, M. G. C.
dc.contributor.authorDe Moraes, G. J.
dc.contributor.authorKnapp, M.
dc.date.accessioned2014-06-04T07:49:56Z
dc.date.available2014-06-04T07:49:56Z
dc.date.issued2007-06-02
dc.descriptionDOI: 10.1111/j.1439-0418.2007.01189.xen_US
dc.description.abstractThe 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 eggs/female/day 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.en_US
dc.identifier.citationJournal of Applied Entomology Volume 131, Issue 5, pages 355–361, June 2007en_US
dc.identifier.issn0931-2048
dc.identifier.other1439-0418
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/9772
dc.language.isoenen_US
dc.publisherWileyen_US
dc.subjectbiological controlen_US
dc.subjectlife tableen_US
dc.subjectpredatorsen_US
dc.subjectprey consumptionen_US
dc.titleBionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansien_US
dc.typeArticleen_US
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