Possible hybridization of Brazilian planorbid snails and its importance in population dynamics
Mem. Inst. Oswaldo Cruz
;
93(supl.1): 227-32, Oct. 1998. ilus, tab
Article
in English
| LILACS
| ID: lil-218675
RESUMO
This study focuses on the possibility of experimental hybridization among host snails species for Schistosoma mansoni in Brazil, with morphological characterization of the hybrids found. By using albinism as a genetic marker, intraspecific crossbreedings were performed between two strains of each species involved, in addition to interspecific crossbreedings; the only viable crossbreeding was between pigmented Biomphalaria glabrata (Paulista, PE) and albino B. tenagophila (Joinville, SC), with the formation of F1 and F2 generations. All offspring in F1 displayed black eyes and a renal ridge on the mantle, while F2 displayed dissociated morphological traits. With regard to reproduction, F1 was more efficient than F2. The experiment's results suggest post-zygotic reproductive isolation.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Snails
/
Biomphalaria
/
Brazil
/
Hybridization, Genetic
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
1998
Type:
Article
/
Congress and conference
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