Parasitism of Hypothenemus hampei (Coleoptera: Scolytidae) in different farming systems and altitudes of Mount Elgon, Uganda

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dc.contributor.authorRaphael Ijala, Anthony
dc.contributor.authorKyamanywa, Samuel
dc.contributor.authorCherukut, Scola
dc.contributor.authorSebatta, Christopher
dc.contributor.authorKarungi, Jeninah
dc.date.accessioned2022-05-26T15:04:30Z
dc.date.available2022-05-26T15:04:30Z
dc.date.issued2019
dc.description.abstractAltitude and farming system play a vital role in modifying the niche for arthropods, by directly influencing microclimatic conditions, the quality and quantity of vegetative cover, which act variably on the behaviour of the pests, and their natural enemies. The objective of the study was to determine their effect on the abundance and parasitism of the Coffee berry borer (Hypothenemus hampei) in the Mount Elgon region. Altitude was categorized as: low (1,400–1,499 m.a.s.l); mid (1,500‐1,679 m.a.s.l); and high (1,680–2,100 m.a.s.l), and farming system was categorized as: Coffee monocrop; Coffee + annual; Coffee + banana; and Coffee + banana + shade trees. For each altitudinal range, each farming system was represented three times. The study was in two districts of the Mt. Elgon, covering a total of 72 Arabica Coffee study sites. The work involved field pest infestation inventories, followed by laboratory rearing for the abundance and parasitism studies. The results revealed highly significant interactions between altitude and farming system in influencing the abundance of the pest and its four parasitoids: Phymastichus coffea, Cephalonomia stephanoderis, Prorops nasuta and Heterospilus coffeicola. C. stephanoderis was highest in the mid‐altitudes within Coffee + banana+shade tree system; P. nasuta was highest at high altitude within Coffee + banana system; P. coffea was most abundant at mid‐altitude within Coffee + banana system, whereas H. coffeicola was highest at high altitude within the Coffee + annual cropping system. H. hampei counts were highest at low altitudes, especially in the Coffee + annual system. Some of these trends can be explained by the condition of the microclimate in the Coffee fields. There was a negative relationship between temperature and abundance of all the four parasitoids. Only C. stephanoderis had a relationship (+) with semi‐natural vegetation species counts. And only H. coffeicola had a relationship (+) with light intensity. These contrasted with H. hampei, which was positively related to temperature and negatively to light intensity.en_US
dc.identifier.citationIjala, A. R., Kyamanywa, S., Cherukut, S., Sebatta, C., & Karungi, J. (2019). Parasitism of Hypothenemus hampei (Coleoptera: Scolytidae) in different farming systems and altitudes of Mount Elgon, Uganda. Journal of Applied Entomology, 143(10), 1122-1131. DOI: 10.1111/jen.12689en_US
dc.identifier.other10.1111/jen.12689
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3486
dc.language.isoenen_US
dc.publisherJournal of Applied Entomologyen_US
dc.subjectMicroclimateen_US
dc.subjectMicroenvironmenten_US
dc.subjectParasitoidsen_US
dc.subjectVegetationen_US
dc.titleParasitism of Hypothenemus hampei (Coleoptera: Scolytidae) in different farming systems and altitudes of Mount Elgon, Ugandaen_US
dc.typeArticleen_US
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