|
| |
|
| |
|
| |
|
| |
|
|
Clicking in cervids - basic parameters, origin and function?
POJEROVÁ, Lucie
It is well known that some ungulates produce clicking sound by limbs, but often without more details. This study deals with the clicking sound in five cervid taxons, specifically in Caribou (Rangifer tarandus), Pere David´s Deer (Elaphurus davidianus), Western Red Deer (Cervus elaphus), Moose (Alces alces), Barbary stag (Cervus elaphus barbarus) in detail. Dominant frequency, 25% quartile, 50% quartile, 75% quartile were investigated for these species, with the particular attention to sex, age and limb position (forelimb, hind-limb) of studied individuals. Clicks sounds were recorded by solid state recorder Marantz PMD 620 with microphone and handset and analysed using program Avisoft-SAS Lab Pro Software, verze 5.0.01 (2010). Statistical analysis of obtained sound parameters were performed using program STATISTICA, version 12 (ANONYMUS 2012).Individuals within the species were compared using discriminant analysis and one-way ANOVA, species using discriminant analysis and nested ANOVA. Nested ANOVA was also used for testing of the sex and age influence on click parameters. Phylogenetic distribution of clicking was determined using the parsimony approach. Results suggest differences among within particular taxon, but differences among species depend on used methods (they are different using nested ANOVA, but they are not different except for Barbary stag in discriminant analysis). Click parameters were significantly associated with age, but not with sex of particular individuals. Ancestor of cervids seems to produce clicking, the evolution of this sound was associated later with its reduction in course of cervid evolution.
|
|
|
Genetická diverzita losa evropského v ČR
Veselý, Jan
The diploma thesis is concentrated on the diversity of Eurasian elk (Alces alces), living in the wild and bred in the zoological gardens in Czech Republic, moreover is the thesis concerned with the damages caused on the population of elks during the migration, caused by the means of transport. The main goal was, however, to chart is genetic variability, estimate its percent occurrence in the wild and analyze the information of its migration in the territory of Czech Republic. The genetic variability and diversity of the Eurasian elk (Alces alces) was investigated by the means of microsatellite markers OarFCB5, T156, BM888, RT1, RT13, T26, RM188, BM1818, ETH225, Haut17. From the amount of ten of microsatellite loci studied, there was no found the polymorphism on the two loci (BM888 a Haut17) of the elks from the forest management of Vyšší Brod (LV). On the elks bred in the zoological gardens (LZ) in Czech Republic, the polymorphism was found on all of the loci. The average heterozygosity found was at the highest on the LZ set of loci (HE = 0,6801 and HO = 0,6833), in comparison to the set LV, where the average levels reached was by HE = 0,5162 and HO = 0,5571. The number of alleles proven in loci with polymorphism on the wild population varied in between 2 to 3 and in the reserved breed in zoological gardens from 5 to 8 alleles. On the basis of the results of genetic parameters it can be determined, that there the influence of inbreeding on the wild population's genetic structure was found. The migration was determined from the data acquired about the move of elk game and from research I conducted on my own. During the last five years there were on the ground of personal investigation, from the questionnaires and from media registered 21 cases of observation of the elk game were registered in terms of our territory and also two collisions between the game and vehicle.
|
|
| |
|
| |
guest ::
