Abstract
In a natural pond among usual black larvae of the common toad (Bufo bufo L.), a few unusual individuals of red-olive coloring were found out. In both morphs we investigated the melanophores of skin using different methods. The ESR-spectrometric analysis has shown the absence of distinctions between morphs by the amount of melanin. Analysis of total preparations of skin has shown the presence of various kinds of melanophore cells both in the derma and in the epidermis. Among typical melanophores, essentially differing cells appeared (atypical cells). In black morph tadpoles, the number of all kinds of melanophores is significantly greater than in red-olive morphs. It is shown that dark coloring is connected with a considerable number of atypical cells in the epidermis imposed on a dense layer of typical dermal melanophores with dispersed melanin.
Published Version
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