In order to elaborate a planorbid chart of the State of Rio de Janeiro a survey of freshwater gastropods in the Metropolitan Mesoregion of this State was performed and revealed the occurrence of 20 species:
Antillorbis nordestensis
(Lucena, 1954);
Biomphalaria glabrata
(Say, 1818);
Biomphalaria schrammi
(Crosse, 1864);
Biomphalaria straminea
(Dunker, 1848);
Biomphalaria tenagophila
(Orbigny, 1835);
Burnupia
sp.;
Drepanotrema anatinum
(Orbigny, 1835);
Drepanotrema cimex
(Moricand, 1839);
Drepanotrema lucidum
(Pfeiffer, 1839);
Ferrissia
sp.;
Gundlachia ticaga
(Marcus & Marcus, 1962);
Heleobia davisi
Silva & Thomé, 1985;
Lymnaea columella
Say, 1817;
Melanoides tuberculatus
(Müller, 1774);
Physa cubensis
Pfeiffer, 1839;
Physa marmorata
Guilding, 1828;
Pomacea
sp.;
Pomacea canaliculata
(Lamarck, 1822);
Pomacea lineata
(Spix, 1827) and
Pomacea sordida
(Swainson, 1823). Among the planorbid species
B.
tenagophila
was the most frequent, occurring in all municipalities surveyed. The present study extends the distribution of
B.
straminea
in the State of Rio de Janeiro and reports new records for A.
nordestensis
,
B.
schrammi
,
G.
ticaga
,
H.
davisi
and the genera
Burnupia and
Ferrissia. An account about the current transmission areas of schistosomiasis mansoni in this Mesoregion is presented as well.
