[The chemical interaction of tadpoles of the common frog Rana temporaria L. with conspecific and heterospecific anuran tadpoles].

In double-choice experiments the behavioural reactions of Rana temporaria tadpoles to con- and heterospecific chemical cues of anuran tadpoles were studied. It was shown that they have not reacted to heterospecific chemical signals but were attracted by co-specific ones. Besides, Rana temporaria tadpoles do not show chemical guided sibling-reaction, saying that the sibs' cues were not preferable. The results indicate that Rana temporaria tadpoles are capable to distinguish these signals, react to some of them and cause the reaction of other tadpoles. Nevertheless, chemical signals seem not to play such great role in communication of these tadpoles.