@article{PAR00002166, title = {{G}enetic structure of the invasive pest {B}emisia tabaci : evidence of limited but persistent genetic differentiation in glasshouse populations}, author = {{D}almon, {A}. and {H}alkett, {F}. and {G}ranier, {M}. and {D}elatte, {H}{\'e}l{\`e}ne and {P}eterschmitt, {M}.}, editor = {}, language = {{ENG}}, abstract = {{T}he geographic range of plant pests can be modified by the use of glasshouses. {B}emisia tabaci, originating from warm to hot climates, has been shown to be a complex of distinct genetic groups with very limited gene flow. {T}he genetic structure of this pest was studied in glasshouses in southern {F}rance, a region beyond the northern limit of its open-field development area in {E}urope. {S}even microsatellite loci were scored in 22 populations sampled from various regions over 3 years. {T}wo genetic groups were distinguished using a {B}ayesian clustering method and were assigned to the so-called biotypes {B} and {Q} using the gene sequence of cytochrome oxidase 1 ({CO}1). {A}ll but one population corresponded to biotype {Q}, even though only biotype {B} was previously reported. {D}espite the enclosed environment of glasshouses and their expected isolation due to low outdoor survival during the winter, only limited differentiation among biotype {Q} glasshouses was observed. {A} single sample site was notable for a decrease in expected heterozygosity and the mean number of alleles over the years. {T}he lack of spatial genetic structure among biotype {Q} populations was indicative of a recent colonization event combined with large dispersal at all spatial scales. {T}his migration pattern of biotype {Q} populations was further supported by additional {CO}1 sequences, since individuals from {F}rance, {A}sia and {A}merica exhibited 100% nucleotide identity. {T}he evolution of genetic diversity observed in glasshouses in {F}rance is part of the worldwide invasion of biotype {Q}, which is discussed in light of human activities.}, keywords = {}, booktitle = {}, journal = {{H}eredity}, volume = {100}, numero = {3}, pages = {316--325}, ISSN = {0018-067{X}}, year = {2008}, DOI = {10.1038/sj.hdy.6801080}, URL = {https://www.documentation.ird.fr/hor/{PAR}00002166}, }