Visual cues from different trap colours affect catches of Sahlbergella singularis (Hemiptera: Miridae) in sex pheromone traps in Cameroon cocoa plantations

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInstitut de Recherche Agricole pour le Développement, Cameroonen
cg.contributor.affiliationUniversité de Yaoundéen
cg.contributor.affiliationUniversity of Greenwichen
cg.contributor.crpRoots, Tubers and Bananasen
cg.contributor.donorDeutsche Gesellschaft für Internationale Zusammenarbeiten
cg.coverage.countryCameroonen
cg.coverage.iso3166-alpha2CMen
cg.coverage.regionAfricaen
cg.coverage.regionMiddle Africaen
cg.creator.identifierFotso Kuate, A.: 0000-0002-5247-7519en
cg.creator.identifierRachid Hanna: 0000-0002-5715-0144en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.cropro.2019.104959en
cg.identifier.iitathemePLANT PRODUCTION & HEALTHen
cg.isijournalISI Journalen
cg.issn0261-2194en
cg.journalCrop Protectionen
cg.reviewStatusPeer Reviewen
cg.subject.iitaBANANAen
cg.subject.iitaCOCOAen
cg.subject.iitaPLANT HEALTHen
cg.subject.iitaPLANT PRODUCTIONen
cg.volume127en
dc.contributor.authorMahot, H.C.en
dc.contributor.authorMahob, J.R.en
dc.contributor.authorHall, D.R.en
dc.contributor.authorArnold, S.E.J.en
dc.contributor.authorFotso, A.K.en
dc.contributor.authorMembang, G.en
dc.contributor.authorEwane, N.en
dc.contributor.authorKemga, A.en
dc.contributor.authorFiaboe, K.K.M.en
dc.contributor.authorBilong, C.F.Ben
dc.contributor.authorHanna, R.en
dc.date.accessioned2019-09-26T13:02:47Zen
dc.date.available2019-09-26T13:02:47Zen
dc.identifier.urihttps://hdl.handle.net/10568/103765
dc.titleVisual cues from different trap colours affect catches of Sahlbergella singularis (Hemiptera: Miridae) in sex pheromone traps in Cameroon cocoa plantationsen
dcterms.abstractCocoa mirids, Sahlbergella singularis and Distantiella theobroma, are the most economically important insect pests of cocoa in West and Central Africa, where they can cause up to 40% losses in cocoa yields. Sahlbergella singularis is the most common species in Cameroon and was therefore targeted in this study. During a two-year trial in 15 cocoa plantations in Ayos and Konye, in the Centre and Southwest regions of Cameroon respectively, the most effective colour – white, purple or green – of sex pheromone traps was examined for integration into mirid management programmes. Similar temporal patterns in S. sahlbergella male trap catches were observed with all three colours, but the green trap caught more S. singularis (Ayos: 0.968 ± 0.091 [SEM]; Konye: 0.640 ± 0.076/trap/month) compared with purple traps (Ayos: 0.674 ± 0.068; Konye: 0.441 ± 0.058), and white traps (Ayos: 0.467 ± 0.049, Konye: 0.253 ± 0.041). Trap reflectance showed wavelength peaks typical for purple in both short (approximately 380–480 nm) and long wavelengths (>650 nm), and ~530 nm for green. Reflectance peaks exceeded 100% of the incident light in the 400–450 nm range from the white, suggesting the presence of optical brighteners. Trap catches support the hypothesis that S. singularis ocelli are more responsive to light of shorter wavelengths. Despite the low attractiveness of the sex pheromone to S. singularis, a optimisation of the colour of the trap can improve S. sahlbergella monitoring, mass trapping, and other control measures which could ultimately lead to reductions of insecticide use and to conservation of beneficial arthropods, particularly cocoa flower pollinators that are critical for improving cacao tree productivity.en
dcterms.accessRightsLimited Accessen
dcterms.audienceScientistsen
dcterms.available2019-09-12en
dcterms.bibliographicCitationMahot, H.C., Mahob, J.R., Hall, D.R., Arnold, S.E., Fotso, A.K., Membang, G., ... & Hanna, R. (2020). Visual cues from different trap colours affect catches of Sahlbergella singularis (Hemiptera: Miridae) in sex pheromone traps in Cameroon cocoa plantations. Crop Protection, 127, 1-7.en
dcterms.extent1-7en
dcterms.issued2020-01en
dcterms.languageenen
dcterms.licenseCopyrighted; all rights reserveden
dcterms.publisherElsevieren
dcterms.subjecttheobroma cacaoen
dcterms.subjectproductionen
dcterms.subjectplantationsen
dcterms.subjectplant diseasesen
dcterms.subjectcameroonen
dcterms.typeJournal Articleen

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