@article{fdi:010077827,
  title = {{R}ole of egg-laying behavior, virulence and local adaptation in a parasitoid's chances of reproducing in a new host},
  author = {{B}enoist, {R}. and {P}aquet, {S}. and {D}ecourcelle, {F}. and {G}uez, {J}. and {J}eannette, {R}{\'e}mi and {C}alatayud, {P}aul-{A}ndr{\'e} and {L}e {R}ü, {B}runo and {M}ougel, {F}. and {K}aiser, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the ability of parasitoid insects to succeed in new host populations is a relevant question for biological control and adaptive mechanisms. {C}otesia typhae is an {A}frican parasitoid specialized on the moth {S}esamiae nonagrioides, also called the {M}editerranean corn borer. {T}wo {K}enyan strains of {C}. typhae differ in their virulence against a new host population from {F}rance. {W}e explored behavioral and physiological hypotheses about this differentiation. {C}otesia genus belongs to a group of {H}ymenoptera in which females inject a domesticated virus in their host to overcome its resistance. {S}ince viral particles are injected along with eggs and since the strain with the higher virulence injects more eggs, we hypothesized that virulence could be explained by the quantity of virus injected. {T}o test this assumption, we measured the injected quantities of eggs and viral particles (estimated by viral {DNA} segments) of each parasitoid strain along several ovipositions, to vary these quantities. {U}nexpectedly, results showed that virulence against the {F}rench host was not correlated to the injected quantities of eggs or viral segments, indicating that virulence differentiation is explained by other causes. {T}he virulence against the respective natural hosts of the two {C}. typhae strains was also measured, and results suggest that local adaptation to a more resistant natural host may explain the pre-adaptation of one strain to the new host population. {W}e also identified a differentiation of oviposition strategy and subsequent offspring number between the parasitoid strains, which is important in a biocontrol perspective.},
  keywords = {{P}arasitoid ; {C}otesia typhae ; {P}olydnavirus ; {O}viposition behavior ; {V}irulence ; {B}iocontrol},
  booktitle = {},
  journal = {{J}ournal of {I}nsect {P}hysiology},
  volume = {120},
  numero = {},
  pages = {art. 103987 [p.]},
  ISSN = {0022-1910},
  year = {2020},
  DOI = {10.1016/j.jinsphys.2019.103987},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077827},
}