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Mapping of distribution of red deer and sika deer hybrids in Czechia using audio recordings - citizen science project
Nečasová, Monika ; Pipek, Pavel (advisor) ; Červený, Jaroslav (referee)
In the Czech Republic, as in other parts of Europe (e.g., British Isles), the native European red deer (Cervus elaphus) has been hybridising with sika deer (C. nippon), which was introduced from East Asia. The hybrids are fertile, and, therefore, can backcross with their parental species and threaten their genetic integrity. Offsprings of such multiple crosses are very difficult to identify according to their morphological traits, while more reliable genetic methods are financially and logistically demanding. This work follows the study of Long et al. from 1998, which showed clear differences in vocalization between red deer, sika deer and the first generation of their hybrids, and thus suggested the third way how to identify hybrids - bioacoustic analysis. We decided to test this method in the Czech Republic in a citizen science project, the aim of which was to map the distribution of parent species and their hybrids using audiorecordings of rut vocalisation. To allow more detailed analysis, we also recorded our own recordings on a professional recording device with a directional microphone. In total, 451 recordings were collected, of which only 263 with a vocalization of 162 individuals were selected for further analysis. Recordings from previous studies from Ireland (Long et al. 1998; Wyman et...
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Mapping of distribution of red deer and sika deer hybrids in Czechia using audio recordings - citizen science project
Nečasová, Monika ; Pipek, Pavel (advisor) ; Červený, Jaroslav (referee)
In the Czech Republic, as in other parts of Europe (e.g., British Isles), the native European red deer (Cervus elaphus) has been hybridising with sika deer (C. nippon), which was introduced from East Asia. The hybrids are fertile, and, therefore, can backcross with their parental species and threaten their genetic integrity. Offsprings of such multiple crosses are very difficult to identify according to their morphological traits, while more reliable genetic methods are financially and logistically demanding. This work follows the study of Long et al. from 1998, which showed clear differences in vocalization between red deer, sika deer and the first generation of their hybrids, and thus suggested the third way how to identify hybrids - bioacoustic analysis. We decided to test this method in the Czech Republic in a citizen science project, the aim of which was to map the distribution of parent species and their hybrids using audiorecordings of rut vocalisation. To allow more detailed analysis, we also recorded our own recordings on a professional recording device with a directional microphone. In total, 451 recordings were collected, of which only 263 with a vocalization of 162 individuals were selected for further analysis. Recordings from previous studies from Ireland (Long et al. 1998; Wyman et...
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Evaluation of mass game hunted in selected hunting grounds in the area of Konstantinovy lázně
POKORNÝ, Radek
Free-ranging population of sika deer, roe deer and wild board in micro-region "Konstantinolázeňsko" in Czech Republic, has been determining dressed body weight, whole body weight, weight of head, weight of limb and weight of internal organs (heart, lungs, liver, spleen and kidneys). The correlation between all weights was calculated. During the research was determined mean weight between whole body and dressed body. In this study the dressed mean weight of sika deer was 74,03 % of the whole mean weight. For wild board the mean dressed weight was about 78,56% of the whole weight and for roe deer mean it was about 76,66% of the whole weight. Obtain weight has been statistically analyzing of ages, sexuality, seasonal variation. For both sexuality of wild board was statically proven that body weight is increasing with age. For sika deer calfs was statically proven that body weight was higher if the calf was shoot after 15. 1. then cals was shoot before. For sika deer with out age difference was statically proven that sika males had higher body weight than sika females. Other types of statistics are listed in the document.
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Application of genetic methods for the detection of deer origin and existence of interspecific hybridization
Krojerová-Prokešová, Jarmila ; Barančeková, Miroslava ; Koubek, Petr
Hybridization between native red deer and non-native sika deer is a real threat in the Czech Republic, even though its existence has been questioned for a long time. The main cause of hybrids’ non-acceptance has been the fact that no reliable methods of their detection exist until recently. However, the application of modern molecular-genetic methods, mainly the analyses of microsatellite loci polymorphism, helps us to detect the proportion of hybrid individuals in wild populations and to establish necessary management measures for their elimination. Most importantly, the usage of molecular-genetic methods enables to detect hybrid individuals of next generations that bear no visible phenotypic signs of previous hybridisation.
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Evaluation of the management of sika deer in hunting area Kozelka
LIŠKA, Petr
Bachelor work deals with the management of sika deer on area Manětínsko. Furthermore, sika deer biology, the parasites, introduction, crossing forest with deer, damage caused to the field and forest cultures and Hunting management of this game. Recorded the breeding and hunting of wild game in the monitored area. The following describes the local hunting conditions and suitability for breeding deer stags with the recommendation of measures for the future. Based on these findings it can be concluded the data needed for practical use.
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