2006
DOI: 10.1080/00379271.2006.10697486
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Release and establishment ofCotesia flavipesCameron (Hymenoptera: Braconidae) an exotic parasitoid ofChilo partellus(Swinhoe) (Lepidoptera: Crambidae) in East and Southern Africa

Abstract: Cotesia fl avipes Cameron (Hymenoptera: Braconidae) was fi rst imported into Kenya in 1991 from Pakistan for control of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). First releases were made at the Kenya coast in 1993 and a few recoveries of the parasitoid were made the following year. Additional foreign exploration for C. fl avipes was conducted in central India in 1996 and 1998, which resulted in additional importation of the parasitoid for subsequent releases in eastern and southern Africa. Region-wid… Show more

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Cited by 27 publications
(26 citation statements)
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“…flavipes, were highly influenced by altitude, which subsequently affected the temperature, relative humidity, and the host. 5,8,26 In our study, higher parasitism rates (82%) were recorded than the earlier reports in Ethiopia (11%-73%), 11,14,27,28 in Uganda (12%-31%), 7 in India (30%), 29 and in Kenya (76.4%). 30 In Ethiopia, the parasitism rate of Cot.…”
Section: Discussioncontrasting
confidence: 54%
“…flavipes, were highly influenced by altitude, which subsequently affected the temperature, relative humidity, and the host. 5,8,26 In our study, higher parasitism rates (82%) were recorded than the earlier reports in Ethiopia (11%-73%), 11,14,27,28 in Uganda (12%-31%), 7 in India (30%), 29 and in Kenya (76.4%). 30 In Ethiopia, the parasitism rate of Cot.…”
Section: Discussioncontrasting
confidence: 54%
“…Furthermore, the benefi ts from insecticide treatments decreased with increasing fertilizer dosage, expect for Kibaha during the short rains, when borer densities were severe suggesting that using insecticides is not profi table under high-pestlow-soil fertility conditions. Presently, a large-scale biological control (BC) program against C. partellus using the exotic braconid larval parasitoid Cotesia fl avipes (Cameron) is underway in eleven countries in East and Southern Africa (Omwega et al 1997;Zhou et al 2001). As shown by Jiang & Schulthess (2006), nitrogen applications to the host plant C. fl avipes is feeding upon increases the egg load of the fecundity of the progeny of the parasitoid indicating that increasing the nutritional status of the plant will also increase parasitism during the season.…”
Section: Discussionmentioning
confidence: 99%
“…Surveys conducted in the country between 1980 and 2000 on maize and sorghum showed that the exotic Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) and Busseola fusca (Fuller) (Lepidoptera: Noctuidae) were the key pest species while Sesamia calamistis Hampson (Lepidoptera: Noctuidae), Eldana saccharina (Walker) (Lepidoptera: Crambidae), and Chilo orichalcociliellus (Strand) (Lepidoptera: Crambidae) were of minor importance (Nyambo & Kabissa 1988;Omwega et al 1997). C. partellus, accidentally introduced from Asia before the 1930s, was for the fi rst time reported in Tanzania in the early 1950s (Duerden 1953).…”
mentioning
confidence: 99%
“…The latter ex-ante study lacked results from exclusion experiments, which help in strengthening impact evaluations. Moreover, it was limited to the coastal region of Kenya, yet Omwega et al (2006) had demonstrated the dispersal of the natural enemies to a wider area in East and Southern Africa.…”
Section: Introductionmentioning
confidence: 98%
“…In partnership with national agricultural research systems (NARS) and universities, icipe implemented the biological control (BC) of stemborers through different projects by releasing natural enemies in the major maize and sorghum producing areas in East and Southern Africa . Following the introduction of natural enemies, post-release surveys and studies were carried out, reporting establishment, acceptable levels of parasitism and decrease in stemborer densities (Bonhof et al, 1997;Cugala and Omwega, 2001;Cugala et al, 2006;Emana et al, 2002;Jiang et al, 2006Jiang et al, , 2008Odendo et al, 2003;Omwega et al, 1997Omwega et al, , 2006Seshu Reddy, 1998;Sohati et al, 2001;Songa et al, 2001;Zhou et al, 2001). Almost all the studies emphasized the first biological control agent that was released, Cotesia flavipes (Cameron) and focused on its short-term assessment (10 years after release), but economic assessments on the real social advantage were not carried out.…”
Section: Introductionmentioning
confidence: 99%