Spatial distribution and seasonality of Biomphalaria spp. in São Luís (Maranhão, Brazil).
Parasitol Res
; 117(5): 1495-1502, 2018 May.
Article
en En
| MEDLINE
| ID: mdl-29551000
ABSTRACT
Two of the three vector species of Schistosoma mansoni Sambon, 1907 in Brazil occur in the state of Maranhão Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848). For the implementation of effective measures to combat schistosomiasis, it is necessary to identify the spatial and seasonal dynamics of these snails. Therefore, this work brought together information from malacological survey carried out in São Luís (Maranhão, Brazil) to identify the spatial and seasonal distribution patterns of Biomphalaria spp. snails. We used data from malacological surveys of the Municipal Health Secretary of São Luís, conducted between 2006 and 2013 in 23 neighborhoods. We also used data from the mollusk surveys that we conducted for 2 years (2012-2014) in four of these neighborhoods. During the 8-year period (2006-2013), 15,990 specimens of Biomphalaria spp. were collected. There was a positive association between precipitation and the abundance of mollusks of the genus Biomphalaria. During 2012-2014, a total of 2487 snail specimens were obtained (B. glabrata 1046 specimens; B. straminea 1426 specimens). There was a positive correlation between precipitation and B. straminea abundance. High density of human occupation and high precipitation are two factors that affect the distribution and density of Biomphalaria spp.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Schistosoma mansoni
/
Biomphalaria
/
Esquistosomiasis mansoni
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Parasitol Res
Asunto de la revista:
PARASITOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Brasil