Hlavní cíl této práce bylo posouzení aktuálních informací v oboru zrání spermatu (procesu, při kterém nezralé spermie získají potenciál reagovat na faktory podněcující pohyblivost spermií) a také posouzení struktury urogenitálního systému ryb v souvislosti se zráním spermií.
Anotace v angličtině
The main aim of this thesis was to review the current knowledge in the field of fish sperm maturation (a process where immature spermatozoa acquire the potential to respond to motility-activating factors) and the urogenital system structure in relation to this maturation.
Klíčová slova
zrání spermií, pohyblivost spermií, spermatogeneze, spermie, urogenitální systém, spermiace, endokrinní systém, hormonální stimulace, varlata, testikulární sperma, akvakultura, Chondrostei, Teleostei, Chondrichthyes
Hlavní cíl této práce bylo posouzení aktuálních informací v oboru zrání spermatu (procesu, při kterém nezralé spermie získají potenciál reagovat na faktory podněcující pohyblivost spermií) a také posouzení struktury urogenitálního systému ryb v souvislosti se zráním spermií.
Anotace v angličtině
The main aim of this thesis was to review the current knowledge in the field of fish sperm maturation (a process where immature spermatozoa acquire the potential to respond to motility-activating factors) and the urogenital system structure in relation to this maturation.
Klíčová slova
zrání spermií, pohyblivost spermií, spermatogeneze, spermie, urogenitální systém, spermiace, endokrinní systém, hormonální stimulace, varlata, testikulární sperma, akvakultura, Chondrostei, Teleostei, Chondrichthyes
Understanding the basic features of spermatozoon biology is vital for the development of artificial reproduction technologies in fishes required for aquaculture and species conservation measures. Nowadays, the specific properties of fish spermatozoa in terms of their motility activation and fertilizing ability are actively studied. At the same time, sperm maturation, as a process that develops the potential for motility and fertilization in morphologically fully developed spermatozoa, was studied just in a few fish species. This process is complicated for the study because of the diverse anatomical structure of the urogenital system in different fish taxa. This bachelor thesis aims to review current knowledge in the field of sperm maturation in relation to taxa-specific features of urogenital structure in fishes.
As fishes are a group of animals consisting of several classes, the review in its first part should consider the taxonomy of fishes concerning their taxa-specific structure of the urogenital system. In the second part, the examples of sperm maturation processes in groups of Actinopterygii (e.g., sturgeons and salmonids) and Elasmobranchii (e.g., sharks and stingrays) will be described. Finally, in the third part of the review, examples of the application of knowledge about sperm maturation for fisheries practice will be presented. The review will be elaborated based on an intensive literature search available in the USB library.
Zásady pro vypracování
Understanding the basic features of spermatozoon biology is vital for the development of artificial reproduction technologies in fishes required for aquaculture and species conservation measures. Nowadays, the specific properties of fish spermatozoa in terms of their motility activation and fertilizing ability are actively studied. At the same time, sperm maturation, as a process that develops the potential for motility and fertilization in morphologically fully developed spermatozoa, was studied just in a few fish species. This process is complicated for the study because of the diverse anatomical structure of the urogenital system in different fish taxa. This bachelor thesis aims to review current knowledge in the field of sperm maturation in relation to taxa-specific features of urogenital structure in fishes.
As fishes are a group of animals consisting of several classes, the review in its first part should consider the taxonomy of fishes concerning their taxa-specific structure of the urogenital system. In the second part, the examples of sperm maturation processes in groups of Actinopterygii (e.g., sturgeons and salmonids) and Elasmobranchii (e.g., sharks and stingrays) will be described. Finally, in the third part of the review, examples of the application of knowledge about sperm maturation for fisheries practice will be presented. The review will be elaborated based on an intensive literature search available in the USB library.
Seznam doporučené literatury
Dzyuba, V., Shelton, W.L., Kholodnyy, V., Boryshpolets, S., Cosson, J., Dzyuba, B., 2019. Fish sperm biology in relation to urogenital system structure. Theriogenology 132: 153-163.
Dzyuba, B., Cosson, J., Dzyuba, V., Fedorov, P., Bondarenko, O., Rodina, M., Linhart, O., Shelton, W., Boryshpolets, S. 2017. Sperm maturation in sturgeon (Actinopterygii, Acipenseriformes): A review. Theriogenology. 97:134-8.
Reproduction in Aquatic Animals. Editors: Yoshida, M., Asturiano, J.F. 2020. Springer Nature Singapore Pte Ltd. DOI: https://doi.org/10.1007/978-981-15-2290-1.
Fish spermatology. Editors: Alavi S.M.H., Cosson J.J., Coward K., Rafiee G.2008. Alpha Science International, Oxford.
Reproductive biology and phylogeny of fishes (agnathans and bony fishes).Jamieson B.G.M. 2009. Science Publishers, Enfield.
Seznam doporučené literatury
Dzyuba, V., Shelton, W.L., Kholodnyy, V., Boryshpolets, S., Cosson, J., Dzyuba, B., 2019. Fish sperm biology in relation to urogenital system structure. Theriogenology 132: 153-163.
Dzyuba, B., Cosson, J., Dzyuba, V., Fedorov, P., Bondarenko, O., Rodina, M., Linhart, O., Shelton, W., Boryshpolets, S. 2017. Sperm maturation in sturgeon (Actinopterygii, Acipenseriformes): A review. Theriogenology. 97:134-8.
Reproduction in Aquatic Animals. Editors: Yoshida, M., Asturiano, J.F. 2020. Springer Nature Singapore Pte Ltd. DOI: https://doi.org/10.1007/978-981-15-2290-1.
Fish spermatology. Editors: Alavi S.M.H., Cosson J.J., Coward K., Rafiee G.2008. Alpha Science International, Oxford.
Reproductive biology and phylogeny of fishes (agnathans and bony fishes).Jamieson B.G.M. 2009. Science Publishers, Enfield.
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Student Jakub Křišťan seznámil komisi se svou bakalářskou prací. Tajemník komise, doc. Ing. Martin Kocour, Ph.D., seznámil komisi s posudkem vedoucího a oponenta bakalářské práce. Následně student zodpověděl doplňující otázky. Proběhla diskuse na téma práce. Student adekvátně a správně reagoval na vznesené dotazy členů komise. Komise se při hodnocení vlastní práce ztotožnila s návrhy posuzovatelů práce (vedoucího a oponenta) a dohodla se na výsledku obhajoby níže.