Salivary α-amylase of stem borer hosts determines host recognition and acceptance for oviposition by Cotesia spp. (Hymenoptera, Braconidae).

Abstract:

Foraging insect parasitoids use specific chemical cues to discriminate between host and non-host species. Several compounds have been identified in “host location and acceptance.” However, nothing is known about the molecular variations in these compounds that could account for host-range differences between parasitoid species. In a previous study, it was shown that during the host-finding process, contact between the braconid Cotesia flavipes and its host is crucial, and that α-amylase of oral secretions from the host plays a key role for host acceptance and oviposition by the parasitoid. The present study sought to establish whether the variations in this enzyme could explain specific host recognition in different host-parasitoid associations. Different species and populations of the C. flavipes complex specialized on graminaceous lepidopteran stemborers were used. Electrophoresis of α-amylase revealed different isoforms that mediate the parasitoid's oviposition acceptance and preference for a specific host. This discovery opens up new avenues for investigating the evolutionary processes at play in chemically-mediated host specialization in the species-rich Cotesia genus.
Subscribe to access this work and thousands more
Overall Rating

0

5 Star
(0)
4 Star
(0)
3 Star
(0)
2 Star
(0)
1 Star
(0)
APA

G., B , G., B , G., B & G., B (2024). Salivary α-amylase of stem borer hosts determines host recognition and acceptance for oviposition by Cotesia spp. (Hymenoptera, Braconidae).. Afribary. Retrieved from https://afribary.com/works/salivary-a-amylase-of-stem-borer-hosts-determines-host-recognition-and-acceptance-for-oviposition-by-cotesia-spp-hymenoptera-braconidae

MLA 8th

G., Bichang'a et. al. "Salivary α-amylase of stem borer hosts determines host recognition and acceptance for oviposition by Cotesia spp. (Hymenoptera, Braconidae)." Afribary. Afribary, 10 Mar. 2024, https://afribary.com/works/salivary-a-amylase-of-stem-borer-hosts-determines-host-recognition-and-acceptance-for-oviposition-by-cotesia-spp-hymenoptera-braconidae. Accessed 28 May. 2024.

MLA7

G., Bichang'a, Bichang'a G. , Bichang'a G. and Bichang'a G. . "Salivary α-amylase of stem borer hosts determines host recognition and acceptance for oviposition by Cotesia spp. (Hymenoptera, Braconidae).". Afribary, Afribary, 10 Mar. 2024. Web. 28 May. 2024. < https://afribary.com/works/salivary-a-amylase-of-stem-borer-hosts-determines-host-recognition-and-acceptance-for-oviposition-by-cotesia-spp-hymenoptera-braconidae >.

Chicago

G., Bichang'a , G., Bichang'a , G., Bichang'a and G., Bichang'a . "Salivary α-amylase of stem borer hosts determines host recognition and acceptance for oviposition by Cotesia spp. (Hymenoptera, Braconidae)." Afribary (2024). Accessed May 28, 2024. https://afribary.com/works/salivary-a-amylase-of-stem-borer-hosts-determines-host-recognition-and-acceptance-for-oviposition-by-cotesia-spp-hymenoptera-braconidae