@article{fdi:010081033,
  title = {{M}anaging and monitoring genetic isolation and local adaptation of endemic and introduced {C}otesia sesamiae for the biological control of the cereal stemborer {B}usseola fusca in {C}ameroon},
  author = {{N}demah, {R}. and {L}e {R}ü, {B}runo and {C}apdevielle {D}ulac, {C}laire and {S}chulthess, {F}. and {K}aiser, {L}. and {H}anna, {R}. and {D}epoilly, {A}. and {O}bonyo, {J}. and {C}alatayud, {P}aul-{A}ndr{\'e} and {A}bang, {A}. and {D}upas, {S}t{\'e}phane},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he success of biological bontrol ({BC}) introductions can be enhanced by considering theory and knowledge of biological systems. {T}he gregarious braconid parasitoid {C}otesia sesamiae ({C}ameroon) is one of the best studied biological control agent from the perspective of molecular ecology. {I}ts evolutionary adaptation to the target host involves symbiotic partners. {P}olydnaviruses are responsible for immune and developmental adaptations whereas {W}olbachia bacteria may reinforce this local adaptation though genetic isolation mechanisms. {T}he noctuid {B}usseola fusca is a major stemborer pest of maize in sub-{S}aharan {A}frica. {I}n contrast to eastern {A}frica, {C}. sesamiae is rarely found on {B}. fusca in western {A}frica. {I}t is however often obtained from other stemborer species feeding on wild grasses. {A} biological control project was launched in 2006-2007 by introducing to {C}ameroon seven crosses of {K}enyan populations of {C}. sesamiae collected in different ecozones. {T}hey included populations adapted to {B}. fusca that develop on maize as well as populations adapted to other hosts feeding on wild plants to allow carryover between cropping seasons. {W}olbachia strains responsible for cytoplasmic reproductive incompatibilities with endemic strains were included in the crosses to limit genetic exchanges between introduced and endemic {C}. sesamiae and preserve genetic adaptation to {B}. fusca of the introduced populations, while at the same time preserving their ability to survive on wild plants. {S}ix post release surveys were carried out on maize from 2007 to 2013, and on wild grasses in 2013. {A} total of 393 {C}. sesamiae individuals, each from one cocoon mass, were genotyped for 11 microsatellite loci. {M}ultidimensional scaling analysis, {STRUCTURE} and {GENE} {CLASS} analyses assigned almost all the parasitoids recovered from maize to those introduced from {K}enya. {T}he introduced strains were also recovered from wild host plants with little genetic exchanges with endemics. {E}ach population remained strongly associated with its original {W}olbachia component, suggesting that {W}olbachia may contribute to genetic isolation between endemics and introduced populations in wild host plants when maize is absent, thereby conciliating biological control success and safety.},
  keywords = {{C}otesia sesamiae ; {B}iological control ; {P}olydnavirus ; {W}olbachia ; {G}enetic ; {CAMEROUN}},
  booktitle = {},
  journal = {{B}iological {C}ontrol},
  volume = {155},
  numero = {},
  pages = {104478 [8 ]},
  ISSN = {1049-9644},
  year = {2021},
  DOI = {10.1016/j.biocontrol.2020.104478},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081033},
}