@article{fdi:010064904,
  title = {{S}tudy of the snail intermediate hosts of urogenital schistosomiasis in {N}iakhar, region of {F}atick, {W}est central {S}enegal},
  author = {{S}enghor, {B}. and {D}iaw, {O}. {T}. and {D}oucour{\'e}, {S}. and {S}eye, {M}. and {T}alla, {I}. and {D}iallo, {A}. and {B}a, {C}. {T}. and {S}okhna, {C}heikh},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {S}chistosoma haematobium is the most widespread schistosome species in {S}enegal and occurs in several regions of the country especially in the {S}udan-{S}ahelian zone. {T}he aims of the study were i) to determine the freshwater species ii) to ascertain the role of the identified snail species in the transmission of {S}. haematobium and iii) to study the impact of drought on the snails. {M}ethods: {S}nails were sampled each year in 17 sites from {J}uly to {N}ovember-{D}ecember 2012 and 2013. {A}t each snail survey, snails were grouped by village, counted, identified according to shell morphology and the rates of schistosome cercarial shedding recorded. {T}he shell height of the snails collected in {J}uly was measured and classified into four groups according to their size in order to determine those that are open to aestivation. {R}esults: {B}. senegalensis and {B}. umbilicatus were the only snails intermediate hosts collected in the {N}iakhar study area. {B}. senegalensis is found in all the 17 sampling sites while {B}. umbilicatus was only found in one site out of the many surveyed. {T}he total number of {B}. senegalensis collected in 2012 and 2013 was 1032 and 8261 respectively. {A} total of 901 and 6432 {B}. senegalensis were tested for {S}chistosoma spp. infestation in 2012 and 2013 respectively. {F}or {B}. umbilicatus, 58 snails were collected and tested in 2012. {I}n 2013, 290 were collected and 281 tested. {T}he overall rates of schistosome cercarial shedding were 0 % in 2012 and 0.12 % in 2013 for {B}. senegalensis and 13.79 and 4.98 % in 2012 and 2013 respectively for {B}. umbilicatus. {F}or both species collected in {J}uly, size group 3 individuals (7-9.9 mm) were the most numerous, 63.6 and 57.8 % for {B}. senegalensis and {B}. umbilicatus respectively. {B}. umbilicatus was reported for the first time in the region of {F}atick located in the old ecological zone of {S}ine-{S}aloum, is able to maintain {S}chistosoma spp. larvae during 7 months of drought and may transmit the disease in early {J}uly, increasing the period and the risk of transmission. {C}onclusion: {T}his study recommends an adaptation of snail control strategies at pond cycles and ecology of the snails in these seasonal foci. {M}alacological control strategies must take into account these phenomena of drought resistance and the capacity of some snails to maintain parasite during aestivation. {T}he treatment of ponds with {B}ayluscide at the end of the rainy season in {N}ovember and upon onset of rains in {J}uly would be more advantageous to the control of snails thereby reducing transmission of urogenital schistosomiasis in the {N}iakhar area.},
  keywords = {{B}. senegalensis ; {B}. umbilicatus ; {S}. haematobium ; {U}rogenital ; schistosomiasis ; {P}onds ; {N}iakhar ; {S}enegal ; {SENEGAL} ; {NIAKHAR}},
  booktitle = {},
  journal = {{P}arasites and {V}ectors},
  volume = {8},
  numero = {},
  pages = {art. 410 [8 p.]},
  ISSN = {1756-3305},
  year = {2015},
  DOI = {10.1186/s13071-015-1030-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064904},
}