@article{fdi:010040932,
  title = {{B}ionomics of malaria vectors and relationship with malaria transmission and epidemiology in three physiographic zones in the {S}enegal {R}iver {B}asin},
  author = {{D}ia, {I}. and {K}onate, {L}. and {S}amb, {B}. and {S}arr, {J}. {B}. and {D}iop, {A}. and {R}ogerie, {F}. and {F}aye, {M}. and {R}iveau, {G}. and {R}emou{\'e}, {F}ranck and {D}iallo, {M}. and {F}ontenille, {D}idier},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ollowing the implementation of two dams in the {S}enegal {R}iver, entomological and parasitological studies were conducted in three different ecological zones in the {S}enegal {R}iver {B}asin (the low valley of {S}enegal {R}iver, the {G}uiers {L}ake area and the low valley of {F}erlo) every 3 month in {J}une 2004, {S}eptember 2004, {D}ecember 2004 and {M}arch 2005. {T}he objective of this work was to study the influence of environmental heterogeneities on vector bionomics and malaria epidemiology. {M}osquitoes were collected when landing on human volunteers and by pyrethrum spray catches. {I}n the parasitological survey, blood samples were taken from a cohort of schoolchildren under 9 years during each entomology survey. {S}even anopheline species were collected: {A}nopheles arabiensis, {A}nopheles gambiae {M} form, {A}nopheles funestus, {A}nopheles pharoensis, {A}nopheles coustani, {A}nopheles wellcomei and {A}nopheles rufipes. {A}. arabiensis, {A}.funestus and {A}. pharoensis were predominant in the low valley of the {S}enegal {R}iver, {A}. funestus in the {G}uiers {L}ake area and {A}. arabiensis in the low valley of {F}erlo. {M}osquito populations' dynamics varied temporally depending on the rainy season for each zone. {T}he anthropophilic rates varied between 6 and 76% for {A}. gambiae s.l. and 23 and 80% for {A}. funestus. {O}nly 4/396 {A}. pharoensis and 1/3076 {A}. funestus tested carried {P}lasmodium falciparum {CS} antigen. {T}hese results suggest the implication of {A}. pharoensis in malaria transmission. {T}he related entomological inoculation rates were estimated to 10.44 in {M}bilor and 3 infected bites in {G}ankette {B}alla and were due, respectively, to {A}. pharoensis and {A}.,funestus. {O}verall, 1636 thick blood smears were tested from blood samples taken from schoolchildren with, respectively, a parasite and gametocyte average prevalence of 9 and 0.9%. {T}he parasite prevalence was uniformly low in {M}bilor and {G}ankette {B}alla whereas; it increased in {S}eptember (16%) and then remained stable in {D}ecember and {M}arch (22%) in {M}boula where malaria transmission was not perceptible. {H}owever, significant differences were observed over time for parasite prevalence in {M}bilor and {M}boula villages whereas; it was only in {G}ankette {B}alla village where gametocyte prevalence was significantly different over time. {O}ur study demonstrates the influence of ecological changes resulted from dams implementation in the {S}enegal {R}iver on the composition of vectorial system, malaria transmission and epidemiology. {S}uch changes should be thoroughly surveyed in order to prevent any possible malaria outbreak in the {S}enegal {R}iver {B}asin.},
  keywords = {},
  booktitle = {},
  journal = {{A}cta {T}ropica},
  volume = {105},
  numero = {2},
  pages = {145--153},
  ISSN = {0001-706{X}},
  year = {2008},
  DOI = {10.1016/j.actatropica.2007.10.010},
  URL = {https://www.documentation.ird.fr/hor/fdi:010040932},
}