Preference of Biomphalaria tenagophila among macrophytes and their periphytons determined through the degree of attractiveness

Abstract

SUMMARYIn presence of extracts of six flowering plants the Biomphalaria tenagophila was more attracted to four them in the following sequence: Nasturtium pumilum > Polygonum acre > Commelina sp. = Echinochloa crusgalli. The periphyton of these flowering plants attracted in the same way the B. tenagophila but without no preference for either of them. Reporting the results that behavior may be evalua¬ ted as a co-evolution between snail and plants.

Tópicos em Malacologia Médica

“…= E. crusgali > controle. Tanto os perifitons raspados destas plantas aquáticas, como os colonizados em lâminas de vidro apresentaram o mesmo forte grau de atração aos caramujos, mas não houve, de maneira geral, nenhuma ordem de preferência por perifiton de determinada macrófita (Santos & Freitas, 1988).…”