Dynamics of snail populations of Biomphalaria glabrata and B. straminea under semi-natural conditions

Author:

Barbosa Frederico S.1,Sanches Odécio1,Barbosa Constança S.2,Arruda Francisco2

Affiliation:

1. Escola Nacional de Saúde Pública, Brasil

2. Universidade Federal de Pernambuco, Brasil

Abstract

Growth curves and mortality rates for populations of Biomphalaria glabrata and B. straminea bred under semi-natural conditions are reponed. Snail populations of the above species were maintained for 220 weeks in indoor cement channels. Data were recorded at 20 week intervals. Crude densities are significantly different for each of the studied populations. B. glabrata showed the lower figure while B. straminea R3 strain showed the best performance. The latter is able to live in half the volume of water needed for B. glabrata when both are submitted to population pressure.

Publisher

FapUNIFESP (SciELO)

Subject

Public Health, Environmental and Occupational Health

Reference15 articles.

1. Statistical Methods in Medical Research: Blackwell Scientific Publications;ARMITAGE P.,1974

2. Interações entre especies de Biomphalaria, moluscos transmissores da esquistossomose no nordeste do Brasil;BARBOSA-FIGUEIREDO C.,1989

3. Possible competitive displacement and evidence of hybridization, between two Brazilian species of planorbid snails;BARBOSA F. S.;Malacologia,1973

4. Competitive displacement of Biomphalaria glabrata by B. straminea;BARBOSA F. S.;Memórias do Instituto Oswaldo Cruz,1987

5. New field observations on the competitive displacement between two species of planorbid snail inhabiting north eastern Brazil;BARBOSA F. S.;Memórias do Instituto Oswaldo Cruz,1981

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