Age and seasonal influences on the body mass and the testicular morphology of brown bears (Ursus arctos) in Croatia
Ligot, Emile
Promotor(s) : Schurmans, Stephane
Date of defense : 27-Jun-2019 • Permalink : http://hdl.handle.net/2268.2/7218
Details
Title : | Age and seasonal influences on the body mass and the testicular morphology of brown bears (Ursus arctos) in Croatia |
Translated title : | [en] Influence de l'âge et de la saisonnalité sur la masse corporelle et la morphologie testiculaire de l'our brun (Ursus arctos) en Croatie |
Author : | Ligot, Emile |
Date of defense : | 27-Jun-2019 |
Advisor(s) : | Schurmans, Stephane |
Committee's member(s) : | Bureau, Fabrice
Marichal, Thomas Lekeux, Pierre |
Language : | English |
Number of pages : | 36 |
Discipline(s) : | Life sciences > Veterinary medicine & animal health |
Research unit : | Université de Zagreb |
Target public : | Researchers Professionals of domain Student |
Institution(s) : | Université de Liège, Liège, Belgique |
Degree: | Master en médecine vétérinaire |
Faculty: | Master thesis of the Faculté de Médecine Vétérinaire |
Abstract
[fr] Ursus arctos. From the wintering to the embryonic diapause, this species capable of physiological prowess has not finished to amaze us. In this study, we document and analyse a completely different facet of their physiology: the reproductive dynamics of the male bear. A statistical study of data collected during the previous years on the Croatian brown bear population will allow us to highlight several elements. Indeed, the evolution of different testicular measurements (index, mass, length and width), linked to the kinetics of the body mass, will show the close links between these different factors. The evolution of these elements will also be studied considering two specific periods: a whole life but also during the seasons (spring-autumn). The resulting curves will be described and interpreted. Then, we will make new assumptions about the working dynamic of the reproductive cycle of male brown bears.
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