Home > Search Results: 999C1a:info:eu-repo/grantAgreement/GA0/GP/GP13-20123P podpora na dlouhodobý koncepční rozvoj výzkumné organizace – Moravská zemská knihovna v Brně podpora na dlouhodobý koncepční rozvoj výzkumné organizace – Moravská zemská knihovna v Brně DKRVO DRKVO IIIB CADSES PANET (5D194), GFL / 1. Impact of introduced American mink (Mustela vison) predation on endangered stone crayfish (Austropotamobius torrentium) was examined in western Bohemian middle-sized streams for two years. Mink diet selectivity and its impact on its prey abundance were been investigating as the main target of this study. 2. The mink diet was described from excrements which were found on the target areas. The importance of different types of prey was specified by their relative numeric contribution to diet. The number of hunted crayfish was elicited from the number of crayfish remains which were collected during two years. The crayfish abundance was determined by capture {--} recapture method. 3. The crayfish was most frequently observed component of mink diet. The rate of mink predation on crayfish was dependent on density of crayfish population. This observed rate was lower during winters than during summers. The mink preferred significantly longer crayfish than was the mean of this value in population. 4. Although the crayfish was important part of mink diet the trend of impact of mink on crayfish is still inexplicit. It would be important to continue in this research to determine correlation between these two species. / 2328-2714-4829 Visegrad Fund's Small Grant No. 11110008 Visegrad Fund's Small Grant No. 11110008 podpora na dlouhodobý koncepční rozvoj výzkumné organizace – Moravská zemská knihovna v Brně
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