@article{fdi:010042786,
  title = {{D}ifferences in oviposition behaviour of two sympatric sibling species of the genus {O}strinia},
  author = {{M}alausa, {T}. and {P}{\'e}lissi{\'e}, {B}. and {P}iveteau, {V}. and {P}{\'e}lissier, {C}. and {B}ourguet, {D}enis and {P}onsard, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{C}hanges in host preferences are thought to be a major {S}ource of genetic divergence between phytophagous insect taxa. {I}n western {E}urope, two sympatric taxa, {O}. nubilalis (the {E}uropean corn borer) and {O}. scapulalis, feed mainly on maize and hop or mugwort, respectively. {T}hese two species may have diverged without geographic isolation after a host shift of ancestral populations onto maize or another cultivated species (e.g. sorghum). {A} previous study using inbred laboratory strains revealed that the two species differ in their oviposition choices in maize-mugwort tests. {W}e sampled four natural populations in {F}rance (two of each taxon) and tested their oviposition behaviour toward four of their main host plant species: maize, sorghum, mugwort and hop. {O}. nubilalis females showed a very high preference for laying their eggmasses on maize, whereas {O}. scapulalis females displayed a more balanced range of preferences. {O}. nubilalis females were attracted slightly to sorghum, suggesting that this plant is an accidental, rather than a regular and ancestral host plant of {O}. nubilalis. {O}ne important result arising from this study is the significant proportion of eggs laid by both {O}strinia species on hop. {T}his may explain why some stands of hop are sometimes not only infested by {O}. scapulalis but also by {O}. nubilalis larvae, a situation preventing assortative mating based on microallopatry. {H}ence, further studies must be conducted to see whether the host preference in the genus {O}strinia might be linked to assortative mating by a mechanism that is not mediated by the host plant.},
  keywords = {{S}ympatric speciation ; {E}cological speciation ; {O}strinia nubilalis ; {O}strinia scapulalis ; {E}uropean corn borer ; {H}ost race ; {H}ost preference},
  booktitle = {},
  journal = {{B}ulletin of {E}ntomological {R}esearch},
  volume = {98},
  numero = {2},
  pages = {193--201},
  ISSN = {0007-4853},
  year = {2008},
  DOI = {10.1017/{S}0007485307005536},
  URL = {https://www.documentation.ird.fr/hor/fdi:010042786},
}