Seasonal cycles and persistence in an acarine predator-prey system on cassava in Africa

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationUniversity of Amsterdamen
cg.contributor.affiliationPurdue Universityen
cg.contributor.donorUnited Nations Development Programmeen
cg.contributor.donorDanish International Development Agencyen
cg.contributor.donorInternational Fund for Agricultural Developmenten
cg.contributor.donorNetherlands Organisation for Scientific Researchen
cg.coverage.countryBenin
cg.coverage.iso3166-alpha2BJ
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierRachid Hanna: 0000-0002-5715-0144
cg.identifier.doihttps://doi.org/10.1007/s10144-005-0215-2en
cg.isijournalISI Journalen
cg.issn1438-3896en
cg.issue2en
cg.journalPopulation Ecologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaCASSAVAen
cg.subject.iitaPESTS OF PLANTSen
cg.volume47en
dc.contributor.authorHanna, R.en
dc.contributor.authorOnzo, A.en
dc.contributor.authorLingeman, R.en
dc.contributor.authorYaninek, John S.en
dc.contributor.authorSabelis, M.W.en
dc.date.accessioned2018-07-05T06:30:20Zen
dc.date.available2018-07-05T06:30:20Zen
dc.identifier.urihttps://hdl.handle.net/10568/95968
dc.titleSeasonal cycles and persistence in an acarine predator-prey system on cassava in Africaen
dcterms.abstractWe applied time series analysis and a mechanistic predator-prey model to long-term data of monthly population counts of the herbivorous pest mite Mononychellus tanajoa and its introduced phytoseiid predator Typhlodromalus aripo from a cassava field in Benin, West Africa. In this approach, we determined the extent to which the main features of the observed predator-prey fluctuations in cassava fields can be explained from biotic traits inherent to the biology of predator and prey, and the extent of the significance of abiotic factors in determining population levels. The time series analyses with cross-correlation showed that the period of predator-prey fluctuations coincided with the annual pattern of intense rainfall and onset of dry season. A pronounced M. tanajoa peak followed after a short lag (2 weeks) by a T. aripo peak coincided with a trough in rainfall intensity. Both the prey and predator had local and lower peaks that coincided with high rainfall intensity, but with a considerably longer lag (ca. 3 months) compared with the high peaks occurring at the onset of the dry season. Regression of log-transformed data series (over a 7-year period) showed that—except for the first year after predator release—M. tanajoa fluctuated around an almost time-invariant mean population density, while T. aripo densities showed a consistent decline over the full observation period. To explain observed trends and periodic components in the data-series of predator and prey densities, we review hypotheses that are based on (1) the annual patterns and trends in abiotic factors, (2) mechanisms endogenous to the predator-prey system and (3) a combination of exogenous and endogenous factors.en
dcterms.accessRightsLimited Access
dcterms.available2005-04-20
dcterms.bibliographicCitationHanna, R., Onzo, A., Lingeman, R., Yaninek, J.S. & Sabelis, M.W. (2005). Seasonal cycles and persistence in an acarine predator-prey system on cassava in Africa. Population Ecology, 47(2), 107-117.en
dcterms.extentp. 107-117en
dcterms.issued2005-08
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectbiological controlen
dcterms.subjectcassavaen
dcterms.subjectpredatorsen
dcterms.subjectdry seasonen
dcterms.subjectbiotic traitsen
dcterms.subjectcowpeasen
dcterms.typeJournal Article

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