@article{fdi:010075677, title = {{S}alivary alpha-amylase of stem borer hosts determines host recognition and acceptance for oviposition by {C}otesia spp. ({H}ymenoptera, {B}raconidae)}, author = {{B}ichang'a, {G}. {B}. and {D}a {L}age, {J}. {L}. and {S}ambai, {K}. and {M}ule, {S}. and {L}e {R}ΓΌ, {B}runo and {K}aiser, {L}. and {J}uma, {G}. and {M}aina, {E}. {N}. and {C}alatayud, {P}aul-{A}ndr{\'e}}, editor = {}, language = {{ENG}}, abstract = {{F}oraging insect parasitoids use specific chemical cues to discriminate between host and non-host species. {S}everal compounds have been identified in "host location and acceptance." {H}owever, nothing is known about the molecular variations in these compounds that could account for host-range differences between parasitoid species. {I}n a previous study, it was shown that during the host-finding process, contact between the braconid {C}otesia flavipes and its host is crucial, and that alpha-amylase of oral secretions from the host plays a key role for host acceptance and oviposition by the parasitoid. {T}he present study sought to establish whether the variations in this enzyme could explain specific host recognition in different host-parasitoid associations. {D}ifferent species and populations of the {C}. flavipes complex specialized on graminaceous lepidopteran stemborers were used. {E}lectrophoresis of alpha-amylase revealed different isoforms that mediate the parasitoid's oviposition acceptance and preference for a specific host. {T}his discovery opens up new avenues for investigating the evolutionary processes at play in chemically-mediated host specialization in the species-rich {C}otesia genus.}, keywords = {parasitic wasp ; {C}otesia flavipes ; {C}otesia sesamiae ; {C}otesia typhae ; protein perception ; host specificity ; oviposition}, booktitle = {}, journal = {{F}rontiers in {E}cology and {E}volution}, volume = {6}, numero = {}, pages = {art. 228 [10 p.]}, ISSN = {2296-701{X}}, year = {2018}, DOI = {10.3389/fevo.2018.00228}, URL = {https://www.documentation.ird.fr/hor/fdi:010075677}, }