Suitability of African Gramineous Stemborers for Development of
Cotesia flavipes
and
C. sesamiae
(Hymenoptera: Braconidae)

Ngi-Song, Adèle J.; Overholt, William A.; Ayertey, J.N.

doi:10.1093/ee/24.4.978

Cited by 105 publications

(74 citation statements)

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“…In contrast to the results obtained by Ngi-Song et al (1995) and Mochiah et al (2001), C. sesamiae did not successfully develop in C. partellus. This is probably due to the population origin of C. sesamiae used.…”

Section: Discussioncontrasting

confidence: 99%

“…Unlike the coastal population, the inland population is able to complete its development in this host, and both can develop in Sesamia calamistis Hampson (Lepidoptera: Noctuidae), the main host of C. sesamiae in coastal Kenya (Ngi-Song et al, 1998). Ngi-Song et al (1995) used the coastal population of C. sesamiae while Mochiah et al (2001) used the inland population from Kitale. However, the Kitale strain of C. sesamiae used in our study did not develop in C. partellus indicating that it was different from that used by Mochiah et al (2001).…”

Section: Discussionmentioning

confidence: 99%

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Host recognition and acceptance behaviour in Cotesia sesamiae and C. flavipes (Hymenoptera: Braconidae), parasitoids of gramineous stemborers in Africa

Calatayud¹,

Rü²,

Obonyo³

et al. 2010

Eur. J. Entomol.

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Abstract. The host recognition and acceptance behaviour of two braconid larval parasitoids (Cotesia sesamiae and C. flavipes) were studied using natural stemborer hosts (i.e., the noctuid Busseola fusca for C. sesamiae, and the crambid Chilo partellus for C. flavipes) and a non-host (the pyralid Eldana saccharina). A single larva was introduced into an arena together with a female parasitoid and the behaviour of the wasp recorded until it either stung the larva or for a maximum of 5 min if it did not sting the larva. There was a clear hierarchy of behavioural steps, which was similar for both parasitoid species. In the presence of suitable host larvae, after a latency period of 16-17 s, the wasp walked rapidly drumming the surface with its antennae until it located the larva. After location and antennal examination of the host, which lasted 60-70 s and 30 s, respectively, the parasitoid inserted its ovipositor. Stinging that resulted in successful oviposition usually lasted 5-6 s. In the presence of non-host larvae, the latency period was between 25-70 s, and parasitoids spent significantly more time walking and antennal drumming on larvae without ovipositing. It is likely that these two parasitoid species use their antennae for host recognition, and both their antennae and tarsi for final acceptance of a host for oviposition. In both C. sesamiae and C. flavipes tactile and contact-chemoreception stimuli from the hosts seemed to play a major role in the decision to oviposit.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Host recognition and acceptance behaviour in Cotesia sesamiae and C. flavipes (Hymenoptera: Braconidae), parasitoids of gramineous stemborers in Africa

Calatayud¹,

Rü²,

Obonyo³

et al. 2010

Eur. J. Entomol.

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“…In western Kenya, four stem borers are common in maize, C. partellus, S. calamistis, B. fusca, and E. saccharina (163), all of which are attractive and acceptable hosts for C. flavipes. Two of which, B. fusca and E. saccharina, are not suitable for its development (123,143). Overholt (141) suggested that the presence of acceptable but unsuitable hosts in an area would create a sink for C. flavipes eggs and depress population growth.…”

Section: Biological Controlmentioning

confidence: 99%

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

Kfir

Overholt

Khan

et al. 2002

Annu. Rev. Entomol.

379

302

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▪ 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.

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“…It attacks medium and large-sized stemborer larvae (Smith et al, 1993;Ngi-Song et al, 1995). C. flavipes is a native to the Indo-Australian region but has been widely introduced in more than 40 countries in the tropics and subtropics for biological control of lepidopteran stemborers in maize, sorghum and sugarcane (Polaszek and Walker, 1991).…”

Section: Introductionmentioning

confidence: 99%

Cotesia flavipes Cameron (Hymenoptera: Braconidae) does not exhibit complementary sex determination (ii) Evidence from laboratory experiments

Niyibigira

Overholt

Stouthamer³

2004

Appl. Entomol. Zool.

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Sex determination in the order Hymenoptera is based on haplodiploid arrhenotoky; in which males develop from unfertilized eggs and are haploid, whereas females develop from fertilized eggs and are diploid. However, some hymenopteran species produce diploid males through a mechanism known as single-locus complementary sex determination (sl-CSD). In these species, heterozygous individuals at a single sex locus develop into females, whereas hemizygotes (haploids) and homozygotes (diploids) develop into males. Inbreeding leads to homozygosity and consequent production of diploid males. We investigated the presence of sl-CSD in the braconid Cotesia flavipes using a series of inbreeding crosses among five isofemale lines. Sex ratio (proportion of females) did not differ among the within-line crosses, between-line crosses and crosses carried out between isofemale lines and a mixed (outbred) colony. Brood size of within-line and between-line crosses did not differ. Culturing populations for 25 generations did not result in changes to more male-biased sex ratios. We conclude that CSD does not exist in C. flavipes. The implications of absence of CSD in C. flavipes are discussed in context of mass rearing for classical biological control programmes.

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Suitability of African Gramineous Stemborers for Development of Cotesia flavipes and C. sesamiae (Hymenoptera: Braconidae)

Cited by 105 publications

References 0 publications

Host recognition and acceptance behaviour in Cotesia sesamiae and C. flavipes (Hymenoptera: Braconidae), parasitoids of gramineous stemborers in Africa

Host recognition and acceptance behaviour in Cotesia sesamiae and C. flavipes (Hymenoptera: Braconidae), parasitoids of gramineous stemborers in Africa

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

Cotesia flavipes Cameron (Hymenoptera: Braconidae) does not exhibit complementary sex determination (ii) Evidence from laboratory experiments

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