Město, Czech Republic
Město, Czech Republic

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Vlcek P.,Slovanska 5 | Najbar B.,University of Zielona Gora | Jablonski D.,Comenius University
Herpetology Notes | Year: 2010

A stable reproducing population of Natrix tessellata is reported from the Czech Silesia (Czech Republic) for the first time. This report also brings the first corroboration of the occurrence of this species from the Polish Silesia (Poland). Both findings extend the known range from the nearest known Moravian locality for ca 144and 154km, respectively, to the North-East.

Jablonski D.,Comenius University | Alena A.,Muskatova 16 | Vlcek P.,Slovanska 5 | Jandzik D.,University of Colorado at Boulder
Belgian Journal of Zoology | Year: 2014

Axanthism in amphibians is a relatively rare color aberration reported less often than leucism or albinism. It is caused by lack of specific types of pigment cells in the skin, namely xanthophores, erythrophores, and iridophores. Here, we present the first case of occurrence of this aberration in a widely distributed toad of the green toad (Bufotes viridis) complex and provide an extensive review of axanthism occurrence in amphibians. So far it has been reported in more than 20 species from nine families of amphibians with the highest occurrence in the family Ranidae. © 2014, Societe Royale Zoologique de Belgique. All rights reserved.

Vlcek P.,Slovanska 5 | Kudlacek M.,Strelecky vrch 690 | Jablonski D.,Comenius University
Biharean Biologist | Year: 2013

Abstract. In the present paper we recorded the first observation of egg cannibalism of high developed tadpoles of Bufotes viridis complex from the island of Krk, Croatia. The main point of the food interests of observed tadpoles were the newly laid strings of eggs. As a main reason of the observed cannibalistic oophagy we discuss the type of the habitat and the high density of tadpoles. ©Biharean Biologist, Oradea, Romania, 2013.

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