@article{fdi:010037940,
  title = {{M}orphometric evidence for a possible role of {R}hodnius prolixus from palm trees in house re-infestation in the {S}tate of {B}arinas ({V}enezuela)},
  author = {{F}eliciangeli, {M}. {D}. and {S}anchez {M}artin, {M}. and {M}arrero, {R}. and {D}avies, {C}. and {D}ujardin, {J}ean-{P}ierre},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he main vector of {C}hagas disease in {V}enezuela is {R}hodnius prolixus. {S}pecimens of {R}hodnius sp., identified elsewhere as {R}. prolixus by molecular tools, were collected in {B}arinas {S}tate ({V}enezuela) before insecticide application, and compared by morphometric techniques with post-spraying, re-infesting insects after control. {G}eometric morphometry was applied, allowing separate analyses of shape and size. {T}he idea of a single species sharing silvatic and domestic/peri-domestic ecotopes was supported, suggesting new evolutionary scenarios for the controversial {R}. prolixus origins. {T}he same data allowed to understand the possible mechanisms of villages re-infestation after a control campaign, either recolonization by local recovery of survivors or re-infestation by external migrants. {B}oth mechanisms were apparent. {A}lthough shape properties could distinguish very close subpopulations such as insects from houses and insects from peri-domestic shelters, they were unable to identify the insects from palm trees as a distinct subpopulation. {T}his strongly suggested that human environment could receive immigrants from palm trees. {T}he pattern of size variation supported the hypothesis of a one-way exchange from silvatic to human environments, but did not support the reverse movement. {T}hus, morphometric data indicated that a silvatic population of the local vector is probably responsible for re-infesting villages after insecticide application, and they also pointed to the existence of re-infestation by local recovery of survivors. {A}ccording to this interpretation, new epidemiological scenarios must be considered to improve {C}hagas disease control in {V}enezuela.},
  keywords = {{R}hodnius prolixus ; {C}hagas disease ; morphometrics ; vector control ; {V}enezuela},
  booktitle = {},
  journal = {{A}cta {T}ropica},
  volume = {101},
  numero = {2},
  pages = {169--177},
  ISSN = {0001-706{X}},
  year = {2007},
  DOI = {10.1016/j.actatropica.2006.12.010},
  URL = {https://www.documentation.ird.fr/hor/fdi:010037940},
}