Bionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansi

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dc.creatorFiaboe, K.K.M.
dc.creatorGondim, M.G.C.
dc.creatorMoraes, G.J. de
dc.creatorOgol, C.K.
dc.creatorKnapp, M.
dc.date2007-06
dc.date2018-04-24T08:40:13Z
dc.date2018-04-24T08:40:13Z
dc.date.accessioned2026-06-27T15:51:13Z
dc.descriptionThe 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.
dc.identifierhttps://hdl.handle.net/10568/92202
dc.identifier.urihttp://hdl.handle.net/123456789/115418
dc.languageen
dc.publisherWiley
dc.rightsLimited Access
dc.sourceFiaboe, K.M., Gondim, M.G., De Moraes, G.J., Ogol, C.K. & Knapp, M. (2007). Bionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansi. Journal of Applied Entomology, 131(5), 355-361.
dc.subjectbiological control
dc.subjectlife table
dc.subjectpredators
dc.subjectprey consumption
dc.subjectstethorus tridens
dc.subjecttetranychus evansi
dc.subjectoviposition
dc.titleBionomics of the acarophagous ladybird beetle Stethorus tridens fed Tetranychus evansi
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)