|
|
The use of genetic variability for the purposes of conservation biology: case studies of populations in captivity and nature
Opelka Somerová, Barbora ; Frynta, Daniel (advisor) ; Veselý, Milan (referee) ; Vojar, Jiří (referee)
2 Abstract In this dissertation thesis, I focused mainly on the topic of endangered species conservation in three projects, which were realized in cooperation with Prague ZOO. The other two subprojects, which are part of this dissertation, deal with the topic of genetic diversity analysis in nature and were realized in cooperation with institutions in Indonesia and Armenia. In all these projects I used a similar laboratory and computational methodology, although each project addressed different problems. In the main and probably the most important project, I studied the skinks of genus Tiliqua living in the Moluccas, New Guinea (Irian Jaya) and adjacent islands. I analyzed mitochondrial and nuclear markers to reveal the phylogenetic and population relationships. In the second project, I focused on the study of ex situ population of Mauremys annamensis in European captive breeding. The goal was to determine the haplotype diversity and detect the F1 hybrids in population. In the third project, I examined the genetic variability of Orlitia borneensis in European zoological gardens for the purposes of ex situ breeding program organization. The fourth project is focused on examination of genetic variability of Chilabothrus angulifer population, which is kept in European breeding. I studied ...
|
|
|
Social interactions and morphometric analysis of populations of Blue-Tongued Skink (Tiliqua gigas)
Jachnická, Kristýna ; Frynta, Daniel (advisor) ; Rehák, Ivan (referee)
A Blue-tongued skink ( Tiliqua gigas) is a rare exotic species which is very popular between breeders. Nevertheless, the social structure of this charismatic skink remains almost unknown. Because of its high aggressive- ness and difficulties connected with study in its natural habitat, experiments based on the odor discrimination looks like a good alternative for its bet- ter understanding. Our results revealed that the reaction on the odor is generally poor and is very individual. We observed the highest response of interest on odors produced throught dorsal parts of skin. The reaction on conspecific's odor did not lead to escape behavior. Behavioral analysis was complemented by morphological analysis of heads in T. gigas and T.scincoides. These species are divided into separate subspecies, which are formed by geographically distinct populations. We wondered whether it is possible to separate these populations by geometric morphometrics and whether this separation is consistent with phylogenetic studies. We found out that if the populations are united in bigger groups based on their congeniality they seem to be distinct according to the head shape. Our results also revealed the monomorphy in head shape. Unfortu- nately, it is very difficult to distinguish between sexes due to the absence of sexual dimorphism....
|
guest ::
