Niche overlap and interspecific association between <i>Chilo partellus</i> and <i>Chilo orichalcociliellus</i> on the Kenya coast

Ofomata, V.C.; Overholt, William A.; Huis, A. van; Egwuatu, R. I.; Ngi-Song, Adèle J.

doi:10.1046/j.1570-7458.1999.00572.x

Cited by 31 publications

(26 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In coastal Kenya, there is evidence that C. partellus has partially displaced the indigenous stem borer, C. orichalcociliellus (130)(131)(132)141). However, C. orichalcociliellus continues to be found at a relatively high frequency (10-30% of the borer complex), which suggests that the displacement of C. orichalcociliellus will not proceed to extirpation (228).…”

Section: Displacement Of Native Stem Borers By C Partellusmentioning

confidence: 99%

Biology and Management of Economically Important Lepidopteran Cereal Stem Borers in Africa

Kfir

Overholt

Khan

et al. 2002

Annu. Rev. Entomol.

371

302

View full text Add to dashboard Cite

▪ Abstract Cereals (maize, sorghum, millet, rice) are extremely important crops grown in Africa for human consumption. Of the various insect pests attacking cereal crops in Africa, lepidopteran stem borers are by far the most injurious. All 21 economically important stem borers of cultivated grasses in Africa are indigenous except Chilo partellus, which invaded the continent from India, and C. sacchariphagus, which has recently been found in sugarcane in Mozambique. C. partellus is competitively displacing indigenous stem borers in East and southern Africa. A parasitoid, Cotesia flavipes, was introduced from Pakistan for biological control of C. partellus and caused a 32–55% decrease in stem borer densities. This article is an attempt to summarize the status of knowledge about economically important cereal stem borers in Africa with emphasis on their distribution, pest status and yield losses, diapause, natural enemies, cultural control, host plant resistance, and biological control. Special attention is given to Busseola fusca and C. partellus, the most important pests of maize and grain sorghum.

show abstract

Section: Displacement Of Native Stem Borers By C Partellusmentioning

confidence: 99%

Biology and Management of Economically Important Lepidopteran Cereal Stem Borers in Africa

Kfir

Overholt

Khan

et al. 2002

Annu. Rev. Entomol.

371

302

View full text Add to dashboard Cite

show abstract

“…Sesamia calamistis Hampson (Lepidoptera: Noctuidae) is a very important pest of maize in West Africa, as is Eldana saccharina Walker (Lepidoptera: Pyralidae) in older maize in West Africa (Bosque-Perez and Schulthess, 1998), and older sugarcane in East and southern Africa (Carnegie, 1974;Conlong, 1997). Chilo orichalcociliellus (Strand) (Lepidoptera: Crambidae) has been recorded as a pest of maize in East Africa, but is being outcompeted as a pest by the exotic Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) (Ofomata et al, 1999).…”

mentioning

confidence: 99%

Biological control of indigenous African stemborers: What do we know?

Conlong¹

2001

Int. J. Trop. Insect Sci.

View full text Add to dashboard Cite

Using examples from surveys to collect natural enemies of the indigenous African sugarcane borer Eldana saccharina Walker throughout Africa, insight is given into what factors should be investigated should biological control of other indigenous African stemborers be considered. Indigenous host plant range, parts of indigenous and crop hosts attacked, types of natural enemies found in these different niches and natural enemy attack strategies are all important factors to consider when planning redistribution of indigenous natural enemies from one part of Africa to another. This knowledge is important when choosing the correct natural enemy for mass rearing and release into the affected crop, and can be used to manage the crop habitat, using the indigenous tritrophic systems identified, to increase crop diversity and thus effectiveness of indigenous natural enemies.

show abstract

“…Other investigations on stem-borers with highly overlapping resources either revealed on-going competitive displacement (KÞr 1997, Ofomata et al 1999, or no effect of interspeciÞc competition (Rathcke 1976, Stiling andStrong 1983), presumably because of lack of resource limitation. The latter generally has been assumed for phytophagous insects, and it was concluded that interspeciÞc competition is therefore too infrequent or weak to play an important role in structuring these communities (Shorrocks et al 1984, Strong et al 1984.…”

Section: Discussionmentioning

confidence: 99%

Two Shoot-Miners,Ceutorhynchus alliariaeandCeutorhynchus roberti, Sharing the Same Fundamental Niche on Garlic Mustard

et al. 2012

View full text Add to dashboard Cite

A combination of observational and experimental methods, in both the laboratory and Þeld, were used to assess niche partitioning between Ceutorhynchus alliariae Brisout and C. roberti Gyllenhal (Coleoptera: Curculionidae), two coexisting shoot-boring weevils on garlic mustard, Alliaria petiolata (M. Bieb.) Cavara and Grande (Brassicaceae). We compared their morphology, oviposition behavior, larval development, distribution, abundance, and attack rates in their sympatric range, and of C. alliariae when found alone and in sympatry with C. roberti. Results indicate only very small differences in the fundamental niches of the two species. Comparison of C. alliariae in the range it occurs alone with the range where it co-occurs with C. roberti revealed some evidence for competition between the two species, i.e., attack levels of C. alliariae were reduced in areas where it co-occurred with C. roberti. However, the study showed no character displacement in regard to adult size or shoot choice of C. alliariae and we found no indication for superiority of either of the two species. Clearly, manipulative experiments would be necessary to unambiguously test for competition between the two species. Our results, based on a subset of niche dimensions known to be important in other systems, suggest that C. alliariae and C. roberti may present one of the rare cases, in which niche differentiation is not the main mechanism underlying coexistence.

show abstract

Niche overlap and interspecific association between Chilo partellus and Chilo orichalcociliellus on the Kenya coast

Cited by 31 publications

References 20 publications

Biology and Management of Economically Important Lepidopteran Cereal Stem Borers in Africa

Biology and Management of Economically Important Lepidopteran Cereal Stem Borers in Africa

Biological control of indigenous African stemborers: What do we know?

Two Shoot-Miners,Ceutorhynchus alliariaeandCeutorhynchus roberti, Sharing the Same Fundamental Niche on Garlic Mustard

Contact Info

Product

Resources

About