@article{PAR00018547,
  title = {{T}riatominae : does the shape change of non-viable eggs compromise species recognition ?},
  author = {{S}antillan-{G}uayasamin, {S}. and {V}illacis, {A}. {G}. and {G}rijalva, {M}. {J}. and {D}ujardin, {J}ean-{P}ierre},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {E}ggs have epidemiological and taxonomic importance in the subfamily {T}riatominae, which contains {C}hagas disease vectors. {T}he metric properties (size and shape) of eggs are useful for distinguishing between close species, or different geographical populations of the same species. {M}ethods: {W}e examined the effects of egg viability on its metric properties, and the possible consequences on species recognition. {F}our species were considered: {P}anstrongylus chinai, {P}. howardi and {T}riatoma carrioni (tribe {T}riatomini), and {R}hodnius ecuadoriensis (tribe {R}hodniini). {D}igitization was performed on pictures taken when the viability of the egg could not clearly be predicted by visual inspection. {W}e then followed development to separate viable from non-viable eggs, and the metric changes associated with viability status of the eggs were tested for species discrimination (interspecific difference). {R}esults: {T}he shape of the complete contour of the egg provided satisfactory species classification (95% of correct assignments, on average), with improved scores (98%) when discarding non-viable eggs from the comparisons. {U}sing only non-viable eggs, the scores dropped to 90%. {T}he morphometric differences between viable and non-viable eggs were also explored (intraspecific comparison). {A} constant metric change observed was a larger variance of size and shape in non-viable eggs. {F}or all species, larger eggs, or eggs with larger operculum, were more frequently nonviable. {H}owever, these differences did not allow for an accurate prediction regarding egg viability. {C}onclusions: {T}he strong taxonomic signal present in egg morphology was affected by the level of viability of the eggs. {T}he metric properties as modified in non-viable eggs presented some general trends which could suggest the existence of an optimum phenotype for size and for shape. {G}lobally, viable eggs tended to have intermediate or small sizes, and presented a less globular shape in the {T}riatomini, or a relatively wider neck in {R}hodnius ecuadoriensis.},
  keywords = {{E}cuador ; {E}gg contour ; {E}gg viability ; {O}perculum landmarks ; {T}riatominae ; {EQUATEUR}},
  booktitle = {},
  journal = {{P}arasites and {V}ectors},
  volume = {11},
  numero = {},
  pages = {art. 543 [12 p.]},
  ISSN = {1756-3305},
  year = {2018},
  DOI = {10.1186/s13071-018-3104-1},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00018547},
}