|
|
Characteristics of inter-individual relationship (friend vs. rival) in red deer and its effect on agonistic behavior and endocrinological feedback
Peterka, Tomáš ; Bartoš, Luděk (advisor) ; Fuchs, Roman (referee)
Red deer males aggregate for a major part of a year to bachelor groups. Social position - Rank - is unstable in these groups. Previous experiments revealed that rank modulated by agonistic behaviour influences antler growth and antler cycle timing. Antlers are secondary sexual characteristics of the deer family and one of the fastest growing tissue in the vertebrate taxa. Their development is modulated by androgenic hormone, testosterone. In our experiment, we observed agonistic behaviour of 19 males. They were equipped with GPS collars and regularly handled for blood samples and downloading of telemetrical data. Based on statistical analysis, we found that in our bachelor group 13 stags kept similar interindividual distances which did not exceed 22 metres ("Closest associates"), whereas the rest of the group moved tens of metres away ("Wanderers"). In regard to the number of agonistic interactions and the interindividual relationship, which arose from that, we divided the bachelor group on "Friends" (˂9 interactions) and "Rivals" (≥9). We found that the number of interactions depended on average distance among males in groups divided by dyadic relationship ("Friends" and "Rivals"). With increasing distance, "Rivals" increased the number of interactions, while "Friends" did not show this trend....
|
|
|
Characteristics of inter-individual relationship (friend vs. rival) in red deer and its effect on agonistic behavior and endocrinological feedback
Peterka, Tomáš ; Bartoš, Luděk (advisor) ; Fuchs, Roman (referee)
Red deer males aggregate during the period of antler growth to bachelor groups. Social position - Rank - is unstable in these groups. Previous experiments revealed that rank modulated by agonistic behaviour influence the antler growth and antler cycle timing. Antlers are the secondary sexual characteristics of the deer family and one of the fastest growing tissue in vertebrate taxa. Their development is modulated by androgenic hormone, testosterone. In our experiment, we observed agonistic behaviour of 19 males. They were equipped with GPS collar and observation lasted for two hours in the evening an in the morning, once or twice a week from the end of May to the end of August. Deer were handled regularly for blood samples and downloading the telemetrical data from collars. Base on a statistical analysis we found that in our bachelor group 13 stags kept similar interindividual distances which did not exceed the 22 metres level. These stags - the closest associates - differed in the sum of agonistic interactions. Those who reached 8 or less interactions were called Friends, while subgroup of the others reaching much more interactions were classified as Rivals. We found that number of interactions depended on average distance among males in groups (Friends and Rivals). Rivals with increasing distance...
|
|
|
Code Generator for RedDeer Test Framework
Jelínek, Dominik ; Bečková, Zuzana (referee) ; Číka, Petr (advisor)
This bachelor’s thesis describes the design and creation of a new Eclipse plug-in. The theoretical part of the thesis describes the architecture of the Eclipse development environment, discusses Java graphical libraries and explains options for extending the Eclipse development environment through its own new plug-ins. Next part of the thesis describes types of application testing and presents ways of application compiling. Practical part of the thesis explains the development of a plug-in, details of internal logic for code generating and describes the implementation of the designed solution for the code generator for the RedDeer Test Framework.
|
|
|
Hormonal Aspects of Antler Growth Regulation
Kužmová, Erika ; Bartoš, Luděk (advisor) ; Petr, Jaroslav (referee) ; Kierdorf, Uwe (referee)
Hormonal aspects of antler growth regulation Erika Kužmová Abstract Deer antlers are the only mammalian organ that completely regenerates and therefore they became an object of rising interest as a potential model for bone growth and development. In recent years, it has been confirmed that annual regeneration of the antler is initiated from the stem cell niche localised in the pedicle periosteum. Antlers grow to the length at the tip. Only a little is known about endocrine stimulation of antler growth and some discrepancy has arisen between in vivo and in vitro studies over the decades. As the secondary sexual character, the antler cycle timing and growth are linked to seasonal levels of testosterone. Since the levels are at their minimum during the antler growth phase, according to many mainly in vitro studies, insulin-like growth factor-1 (IGF-1) tends to be accepted as the "antler stimulating hormone". Since the conclusion about the role of IGF-1 was contradictory to previous opinions and also in contrast with our own experience, we aimed to verify the role of IGF-1 in vitro. Our ex- periments were based on existing in vivo studies demonstrating the importance of testosterone, even in its low levels, and on the hypothesis that testosterone should be the "antler stimulating hormone". We performed in vitro...
|
|
|
GPS telemetry and activity measurement focused on even-toed ungulates (Artiodactyla)
Peterka, Tomáš ; Bartoš, Luděk (advisor) ; Komárková, Martina (referee)
GPS telemetry is a recently expanding method for research on most animal species. It provides automatical scanning of position and related data on large distances and often on large temporal scale. The research studies has changed dramatically during the development of this method. Experiments using this technology deal with scanning of incidence, management and species conservation, activity pattern of controlled animals, estimation of behavior in various scales and so on. Activity sensors which are often included to GPS collars serve for determination of behavior of monitored species. In this thesis there are summarized basics of VHF and GPS technology. In available articles of great terrestrial mammals like even-toed ungulates (Artiodactyla) and marginally also bears (Ursidae) we show possible application of GPS technology for activity measurement, methods, restrictions and results of experiments. At the end we introduce experimental approach for activity measurement of red deer (Cervus elaphus) and results of the pilot study.
|
|
|
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.
|
|
|
Quantifying the production of feces - excrement selected deer herds in accordance with special regulations.
SVOBODA, Zdeněk
The work is focused on the production of deer droppings, black, fallow deer and mouflon. For this reason, the aim of this work is to determine the content of selected elements and findings of spring tribal condition of the game in the Highlands and the total amount of excreted droppings. According to collected information it can be concluded that a standard condition of deer causes no environmental pollution. In contrast, when there is an overpopulation of deer it can cause a negative impact on the environment and pollution of groundwater.
|
|
|
Analysis of factors affecting the welfare of red deer
PŘICHYSTALOVÁ, Michala
Red deer (Cervus elaphus) is a frequent subject of human interest. It can be managed in the wild, can be intensively bred in game preserves, can be the subject of game farming or bred as a pet, subspecies of red deer occur in the zoos. In the management of deer in the wild can not fully eliminate all negative impacts on the welfare, management of deer in the game preserves should follow optimal breeding conditions completely. The aim of this work was to evaluate the extent to which the red deer management in the Czech Republic is to ensure welfare. There is a list of analysis of reports of the red deer management, statements of the environmental analysis of the red deer and livestock conditions in selected game preserves.
|
|
| |
|
| |
guest ::
