@article{fdi:010074107,
  title = {{A}lpha-amylase mediates host acceptance in the {B}raconid parasitoid {C}otesia flavipes},
  author = {{B}ichang'a, {G}. and {D}a {L}age, {J}. {L}. and {C}apdevielle {D}ulac, {C}laire and {Z}ivy, {M}. and {B}alliau, {T}. and {S}ambai, {K}. and {L}e {R}ü, {B}runo and {K}aiser, {L}. and {J}uma, {G}. and {M}aina, {E}. {N}. {M}. and {C}alatayud, {P}aul-{A}ndr{\'e}},
  editor = {},
  language = {{ENG}},
  abstract = {{F}oraging parasitoids use chemical signals in host recognition and selection processes. {A}lthough, the volatiles play a relevant role in the localization by parasitoids of their hosts feeding on plants, the host identification process for acceptance occurs mainly during contact between the parasitoid and its host where host products related to feeding activities, fecal pellets and oral secretions, play a crucial role. {T}he purpose of this study was to identify the nature of the contact kairomone(s) that mediate the acceptance for oviposition of the parasitoid {C}otesia flavipes {C}ameron ({H}ymenoptera, {B}raconidae), which was released in {K}enya in 1993 to control the invasive crambid {C}hilo partellus ({S}winhoe). {U}sing host and non-hosts of {C}. flavipes, we showed that it is mainly the oral secretions of the larvae that harbour the active compound(s) that mediate host acceptance for oviposition by {C}. flavipes. {U}sing an integration of behavioral observations and biochemical approaches, the active compound of the oral secretions was identified as an alpha-amylase. {U}sing synthetized alpha-amylases from {D}rosophila melanogaster (an insect model for which syntheses of active and inactive alpha-amylases are available), we observed that the conformation of the enzyme rather than its catalytic site as well as its substrate and its degradation product is responsible for host acceptance and oviposition mediation of {C}. flavipes females. {T}he results suggest that the alpha-amylase from oral secretions of the caterpillar host is a good candidate for an evolutionary solution to host acceptance for oviposition in {C}. flavipes.},
  keywords = {{B}iological control ; {P}est insects ; {L}epidoptera stemborers ; {C}hilo partellus ; {C}otesia flavipes ; {K}airomone ; alpha-amylase ; {H}ost recognition ; {P}arasitoids ; {H}ost oral secretion ; {M}ultitrophic interactions ; {S}emiochemicals},
  booktitle = {},
  journal = {{J}ournal of {C}hemical {E}cology},
  volume = {44},
  numero = {11},
  pages = {1030--1039},
  ISSN = {0098-0331},
  year = {2018},
  DOI = {10.1007/s10886-018-1002-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074107},
}