Seasonal fluctuations of noctuid stemborer egg parasitism in southern Benin with special reference to Sesamia calamistis Hampson (Lepidoptera:Noctuidae) and Telenomus spp (Hymenoptera:Scelionidae) on maize

Simple item page
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.coverage.countryBenin
cg.coverage.iso3166-alpha2BJ
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierGeorg Goergen: 0000-0003-4496-0495
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1080/09583150120093103en
cg.isijournalISI Journalen
cg.issn0958-3157en
cg.issue6en
cg.journalBiocontrol Science and Technologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaMAIZEen
cg.volume11en
dc.contributor.authorSchulthess, F.en
dc.contributor.authorChabi-Olaye, A.en
dc.contributor.authorGoergen, Georg E.en
dc.date.accessioned2018-09-13T11:26:21Zen
dc.date.available2018-09-13T11:26:21Zen
dc.identifier.urihttps://hdl.handle.net/10568/97191
dc.titleSeasonal fluctuations of noctuid stemborer egg parasitism in southern Benin with special reference to Sesamia calamistis Hampson (Lepidoptera:Noctuidae) and Telenomus spp (Hymenoptera:Scelionidae) on maizeen
dcterms.abstractParasitism of noctuid stemborer eggs was assessed in monthly surveys in maize fields in southern Benin, from May 1995 to October 1996, and on alternative hosts, i.e. wild grasses, during the dry season from November 1995 to February 1996. Sesamia calamistis was the most prevalent stemborer species, accounting for 98% of the larvae identified from subsamples reared on ear pieces. Egg batch densities ranged between 0.02-0.15 per plant, with lowest densities found during high rainfall periods. 77% of all egg batches were found to be parasitized The egg parasitoids were the scelionids Telenomus busseolae, T. isis , and the trichogrammatid Lathromeris ovicida , accounting for 55.6, 41.6 and 2.8% of total counts, respectively. Parasitism increased in the course of the cropping season and reached peaks of 92 and 86% during the second growing season of 1995 and 1996, respectively. This coincides with the time when farmers have planted a second crop and during a stage when the plants were most attractive and susceptible to S. calamistis attacks. During the dry season, relatively high parasitism was found on maize and wild grasses in inland valleys, and it was concluded that those habitats play an important role in stabilizing the system for both the pest and its natural enemies. As a result, in the Dahomey Gap, which includes parts of Benin, Togo and Ghana, S. calamistis is usually not of economic importance. Although T. busseolae is ubiquitous in Africa, T. isis was only reported from West Africa, including Cameroon. It is recommended that the geographic range of T. isis should be expanded and include East and Southern Africa, where another host, Busseola fusca , is the most important noctuid stemborer pest on cereals.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2010-06-28
dcterms.bibliographicCitationSchulthess, F., Chabi-Olaye, A. & Goergen, G. (2001). Seasonal fluctuations of noctuid stemborer egg parasitism in southern Benin with special reference to Sesamia calamistis Hampson (Lepidoptera: Noctuidae) and Telenomus spp.(Hymenoptera: Scelionidae) on maize. Biocontrol Science and Technology, 11(6), 745-757.en
dcterms.extent745-757en
dcterms.issued2001-12
dcterms.languageen
dcterms.publisherInforma UK Limiteden
dcterms.subjectsesamia calamistisen
dcterms.subjecttelenomus busseolaeen
dcterms.subjecttelenomusen
dcterms.subjectmaizeen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IITA Journal Articles