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Action plans and protection of ground squirrels
Novotná, Kristýna ; Matějů, Jan (advisor) ; Reif, Jiří (referee)
Unfortunately, the number of endangered species is still increasing, in most cases due to the human activities. The main aim of the protection of species is to provide conditions for survival of endangered species in nature. However, for some species the common instruments of protection (such as protection of habitat) are not sufficient and it is necessary to use some special methods. For these species are organized so-called action plans. Among such species belongs the European Ground Squirrel (Spermophilus citellus). We can find also other endangered species within ground squirrels from the tribe Marmotini Pocock, 1923 as well. These species need the special protection methods, like captive breeding, repatriation and translocation of individuals or special management of the habitat. In this work are processed data about protection of genera Cynomys, Marmota and Spermophilus, especially White-tailed Prairie Dog (C. leucurus), Utah Prairie Dog (C. parvidens), Alpine Marmot (M. marmota), Vancouver Island Marmot (M. vancouverensis), Idaho Ground Squirrel (S. brunneus), European Ground Squirrel (S. citellus), Franklin's Ground Squirrel (S. franklinii), Speckled Ground Squirrel (S. suslicus) and Washington ground squirrel (S. washingtoni). Actual status and cause of endangerment are given for each...
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Fitness comparison of the European ground squirrel's populations living in different habitats and population density
Novotná, Kristýna ; Matějů, Jan (advisor) ; Pavelková, Věra (referee)
Fitness in ground squirrels is a frequently discussed topic, reported in many publications, although it was rarely the subject of their study. The aim of this study was to determine which factors and find out how they affect the fitness of individuals, and thus the whole population of the European ground squirrel in Czech Republic. For this purpose we collected body mass data at three studied population, which are the main indicator of the fitness in ground squirrels. We also recorded information about injuries, reproduction status, ectoparasites and endoparasites. Moreover we collected all available data on the body mass of European ground squirrel in the central European region, and we compiled overview of body mass changes during the season. This enables us to compare our data with typical/common body mass value in particular sex, age and season. Recorded differences in body mass at three studied sites were related to sex, age, locality and season. We found positive correlation between the body mass and injuries from fights/reproduction activity in adult males. The relationship between body mass and reproduction activity of females was not found. Four species of ectoparasites, mostly occurring in adults, were recorded in studied populations. We also found five species of endoparasites, which...
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Action plans and protection of ground squirrels
Novotná, Kristýna ; Matějů, Jan (advisor) ; Reif, Jiří (referee)
Unfortunately, the number of endangered species is still increasing, in most cases due to the human activities. The main aim of the protection of species is to provide conditions for survival of endangered species in nature. However, for some species the common instruments of protection (such as protection of habitat) are not sufficient and it is necessary to use some special methods. For these species are organized so-called action plans. Among such species belongs the European Ground Squirrel (Spermophilus citellus). We can find also other endangered species within ground squirrels from the tribe Marmotini Pocock, 1923 as well. These species need the special protection methods, like captive breeding, repatriation and translocation of individuals or special management of the habitat. In this work are processed data about protection of genera Cynomys, Marmota and Spermophilus, especially White-tailed Prairie Dog (C. leucurus), Utah Prairie Dog (C. parvidens), Alpine Marmot (M. marmota), Vancouver Island Marmot (M. vancouverensis), Idaho Ground Squirrel (S. brunneus), European Ground Squirrel (S. citellus), Franklin's Ground Squirrel (S. franklinii), Speckled Ground Squirrel (S. suslicus) and Washington ground squirrel (S. washingtoni). Actual status and cause of endangerment are given for each...
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