FN Archimer Export Format
PT J
TI Hybridization increases genetic diversity in Schistosoma haematobium populations infecting humans in Cameroon
BT 
AF Djuikwo Teukeng, Félicité Flore
   Blin, Manon
   Bech, Nicolas
   Reguera Gomez, Marta
   Zein-Eddine, Rima
   Kouam Simo, Alain Michel
   Allienne, Jean-Francois
   Tchuem-Tchuenté, Louis Albert
   Boissier, Jérôme
AS 1:;2:;3:;4:;5:;6:;7:;8:;9:;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Faculty of Heath Science, Mountain University, P.O. Box 208, Bangangté, Cameroon
   IHPE Lab UMR 5244 CNRS, IFREMER, UPVD, UM, 66000, Perpignan, France
   EBI Lab UMR 7267 CNRS, University of Poitier, 86073, Poitiers, France
   Parasitology Department, University of Valencia, 46100, Valencia, Spain
   Tropical Neurology Institute, UMR 1094, INSERM University of Limoges, 87025, Limoges, France
   Laboratory of Parasitology and Ecology, Faculty of Sciences, University of Yaoundé I, Yaoundé, Cameroon
C2 UNIV MOUNTAIN, CAMEROON
   UNIV PERPIGNAN, FRANCE
   UNIV POITIERS, FRANCE
   UNIV VALENCIA, SPAIN
   UNIV LIMOGES, FRANCE
   UNIV YAOUNDE, CAMEROON
UM IHPE
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 8.1
TC 8
UR https://archimer.ifremer.fr/doc/00761/87304/92829.pdf
   https://archimer.ifremer.fr/doc/00761/87304/92830.zip
LA English
DT Article
DE ;Schistosoma haematobium;Schistosoma bovis;Genetic diversity;Hybridization;Miracidium;Cameroon
AB Background Hybrids between Schistosoma haematobium (Sh) and S. bovis (Sb) have been found in several African countries as well as in Europe. Since the consequences of this hybridization are still unknown, this study aims to verify the presence of such hybrids in Cameroonian humans, to describe the structure of S. haematobium populations on a large geographic scale, and to examine the impact of these hybrids on genetic diversity and structure of these populations. Methods From January to April 2019, urine from infected children was collected in ten geographically distinct populations. Miracidia were collected from eggs in this urine. To detect the presence of hybrids among these miracidia we genotyped both Cox1 (RD-PCR) and ITS2 gene (PCR-RFLP). Population genetic diversity and structure was assessed by genotyping each miracidium with a panel of 14 microsatellite markers. Gene diversity was measured using both heterozygosity and allelic richness indexes, and genetic structure was analyzed using paired Fst, PCA and Bayesian approaches. Results Of the 1327 miracidia studied, 88.7% were identified as pure genotypes of S. haematobium (Sh_Sh/Sh) while the remaining 11.3% were hybrids (7.0% with Sh_Sh/Sb, 3.7% with Sb_Sb/Sh and 0.4% with Sb_Sh/Sb). No miracidium has been identified as a pure genotype of S. bovis. Allelic richness ranged from 5.55 (Loum population) to 7.73 (Matta-Barrage) and differed significantly between populations. Mean heterozygosity ranged from 53.7% (Loum) to 59% (Matta Barrage) with no significant difference. The overall genetic differentiation inferred either by a principal component analysis or by the Bayesian approach shows a partial structure. Southern populations (Loum and Matta Barrage) were clearly separated from other localities but genetic differentiation between northern localities was limited, certainly due to the geographic proximity between these sites. Conclusions Hybrids between S. haematobium and S. bovis were identified in 11.3% of miracidia that hatched from eggs present in the urine of Cameroonian schoolchildren. The percentages of these hybrids are correlated with the genetic diversity of the parasite, indicating that hybridization increases genetic diversity in our sampling sites. Hybridization is therefore a major biological process that shapes the genetic diversity of S. haematobium. 
PY 2022
PD MAR
SO Infectious Diseases Of Poverty
SN 2095-5162
PU Springer Science and Business Media LLC
VL 11
IS 1
UT 000773928700002
DI 10.1186/s40249-022-00958-0
ID 87304
ER

EF