@article{fdi:010066209,
  title = {{A} phylogeny of {C}ichlidogyrus spp. ({M}onogenea, {D}actylogyridea) clarifies a host-switch between fish families and reveals an adaptive component to attachment organ morphology of this parasite genus},
  author = {{M}essu {M}andeng, {F}. {D}. and {B}ilong {B}ilong, {C}. {F}. and {P}ariselle, {A}ntoine and {V}anhove, {M}. {P}. {M}. and {B}itja {N}yom, {A}. {R}. and {A}gn{\`e}se, {J}ean-{F}ran{\c{c}}ois},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {P}arasite switches to new host species are of fundamental scientific interest and may be considered an important speciation mechanism. {F}or numerous monogenean fish parasites, infecting different hosts is associated with morphological adaptations, in particular of the attachment organ (haptor). {H}owever, haptoral morphology in {C}ichlidogyrus spp. ({M}onogenea, {D}actylogyridea), parasites of {A}frican cichlids, has been mainly linked to phylogenetic rather than to host constraints. {H}ere we determined the position of {C}ichlidogyrus amieti, a parasite of species of {A}phyosemion ({C}yprinodontiformes, {N}othobranchiidae) in the phylogeny of its congeners in order to infer its origin and assess the morphological changes associated with host-switching events. {M}ethods: {T}he {DNA} of specimens of {C}. amieti isolated from {A}phyosemion cameronense in {C}ameroon was sequenced and analyzed together with that of {C}ichlidogyrus spp. from cichlid hosts. {I}n order to highlight the influence of the lateral transfer of {C}. amieti on the haptoral sclerotised parts we performed a {P}rincipal {C}omponent {A}nalysis ({PCA}) to compare the attachment organ structure of {C}. amieti to that of congeners infecting cichlids. {R}esults: {C}ichlidogyrus amieti was found to be nested within a strongly supported clade of species described from {H}emichromis spp. (i.e. {C}. longicirrus and {C}. dracolemma). {T}his clade is located at a derived position of the tree, suggesting that {C}. amieti transferred from cichlids to {C}yprinodontiformes and not inversely. {T}he morphological similarity between features of their copulatory organs suggested that {C}. amieti shares a recent ancestor with {C}. dracolemma. {I}t also indicates that in this case, these organs do not seem subjected to strong divergent selection pressure. {O}n the other hand, there are substantial differences in haptoral morphology between {C}. amieti and all of its closely related congeners described from {H}emichromis spp.. {C}onclusions: {O}ur study provides new evidence supporting the hypothesis of the adaptive nature of haptor morphology. {I}t demonstrates this adaptive component for the first time within {C}ichlidogyrus, the attachment organs of which were usually considered to be mainly phylogenetically constrained.},
  keywords = {{P}hylogeny ; {L}ateral transfer ; {C}ichlidogyrus amieti ; {A}phyosemion ; {N}othobranchiidae ; {C}ichlidae ; {C}ameroon ; {A}frica ; {CAMEROUN}},
  booktitle = {},
  journal = {{P}arasites and {V}ectors},
  volume = {8},
  numero = {},
  pages = {582 [12]},
  ISSN = {1756-3305},
  year = {2015},
  DOI = {10.1186/s13071-015-1181-y},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066209},
}