Korshunov O. Ecological patterns in biotopic distribution of Pelophylax esculentus complex according within the upper Seversky Donets Drainage.

Object - ecological specifics of Pelophylax esculentus complex. The aim is to identify the ecological specifics of Pelophylax esculentus complex within the Upper Seversky Donets drainage are shown. The methods ate field studies, morphological, cytogenetic and biochemical, biometrics and statistics. The centre of waterfrogs diversity has been discovered, in which simultaneously di- and triploids of Pelophylax esculentus co-occur. Species belonging was determined by modern laboratory techniques. Ecological pattern in biotopic distribution of the complex members was discovered and their ecological preferences were detected. The crucial role of terrestrial site appearance was revealed in pattern of P. esculentus and P. lessonae distribution. Application spheres are training courses, environmental protection.