@article{fdi:010044326,
  title = {{G}rowth changes in {R}hodnius pallescens under simulated domestic and sylvatic conditions},
  author = {{R}iano, {H}. {C}. and {J}aramillo, {N}. and {D}ujardin, {J}ean-{P}ierre},
  editor = {},
  language = {{ENG}},
  abstract = {{R}hodnius pallescens {B}arber 1932 is a silvatic species of {T}riatominae living in palm trees in {C}olombia and part of {C}entral {A}merica. {I}n {C}olombia, the species did not adapt to domestic structures and is not considered as an important vector for humans. {I}n {P}anama, {C}osta {R}ica and {N}icaragua it is a recognized vector adapting to peridomestic and domestic structures. {T}he main condition required for a {T}riatominae to be a significant vector of {C}hagas disease is its ability to colonize human dwellings. {T}he mechanisms of this process are unknown. {I}n this adaptation to domesticity, previous authors have reported a fairly constant reduction in general size and discussed its possible causes in terms of natural selection across various generations or of simple growth changes within one single generation. {S}ome authors suggested that this size change could correspond to the relaxation of a selective pressure in the wild, where larger phenotypes are possibly selected due to their greater capacity to resist temporary food shortages. {O}thers suggested that growth patterns could change quickly in domestic conditions because of faster development time or higher population density. {U}p to now, these hypotheses have not been explored experimentally. {W}e built a laboratory protocol measuring the effects of population density and feeding patterns on the growth of {R}. pallescens. {A} total of 320 first instar nymphs from a 10 generations old laboratory colony were randomly subdivided into four regimes combining density and feeding frequency variation. {U}sing geometric morphometric techniques applied to the emerging adults, we evaluated size and shape variation of the heads and the wings across the four experimental designs. {T}he regimes tentatively paralleled changes occurring for a {T}riatominae in the transition from silvatic (low population density, low feeding frequency) to domestic (higher density, higher feeding frequency) habitats. {D}ensity and feeding frequency combined their effect within the span of one single generation to produce similar size changes for wings and heads, but significant only for the wings. {N}o significant variation could be detected for shape variation, neither for the wing nor for the head. {O}ur data suggest that selection is not needed to account for observed changes between sylvatic and domestic ecotopes, and they did not agree with an effect of development time on size. {T}hey highlighted the importance of the interaction between population density and feeding frequency to produce specific and significant variation in the insect dimensions.},
  keywords = {{G}eometric morphometrics ; {S}hape ; {S}ize ; {D}omestic habitat ; {T}riatominae},
  booktitle = {},
  journal = {{I}nfection {G}enetics and {E}volution},
  volume = {9},
  numero = {2},
  pages = {162--168},
  ISSN = {1567-1348},
  year = {2009},
  DOI = {10.1016/j.meegid.2008.10.009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010044326},
}