20.500.12556/RUL-133407 Dinamika rasti, razvoja in vedenja ličink velikega pupka v laboratorijskih pogojih Dynamics of growth, development and behavior of the italian crested newt larvae in laboratory conditions V magistrski nalogi smo opisali razvoj v laboratorijskih razmerah izleženih ličink velikega pupka (Triturus carnifex Laurenti 1768). Primerjali smo tudi njihovo rast, preživetje in vedenje glede na količino razpoložljive hrane in gostoto osebkov Spremljali smo tudi uspešnost preživetja zarodkov do izleganja in potrdili sindrom razvojne zaustavitve pri 49,7 % zarodkih. Postembrionalni razvoj, ki je trajal 97 dni, smo razdelili na 16 razvojnih stadijev. Od stadija 42 po Harrisonu, ki sovpada z izleganjem ličink po 14 dneh embrionalnega razvoja, do stadija 57, ko se metamorfoza zaključuje. Prepoznali smo dve obliki agresivnega vedenja ličink; delni in popolni kanibalizem, slednji ni bil pogost. Pri delnem kanibalizmu je prihajalo do poškodb repa in okončin in manj pogosto do poškodb škrg. Razen v primeru škrg, ostale poškodbe niso bile letalne, saj so poškodovani deli regenerirali. Statistična analiza je potrdila večjo pogostnost in več poškodb pri manjših ličinkah in veliki gostoti osebkov v akvarijih. Potrjen je tudi negativen vpliv visoke gostote osebkov na njihovo rast in razvoj. Zagotavljanje ustrezne količine hrane prav tako ni zanemarljivo. Rezultati študije predstavljajo pomembno osnovo za primerjalne študije ontogenije in prikazujejo pomembnost optimalnih razmer za vzrejo ličink repatcev v laboratorijskih pogojih. In the master 's thesis we described the development of Italian crested newts larvae (Triturus carnifex Laurenti 1768) hatched in laboratory conditions. We compared their growth, survival, and behavior between treatments, which varied according to the amount of food available and the density of specimens. We also monitored the survival of embryos to hatching and confirmed developmental arrest syndrome in 49,7% of embryos. We divided postembryonic development lasting 97 days into 16 developmental stages. From stage 42 according to Harrison, which coincides with larval hatching after 14 days of embryonic development, to stage 57, when the metamorphosis is almost complete. We identified two forms of aggressive larval behavior; partial and complete cannibalism, although the latter was relatively uncommon. Partial cannibalism resulted in tail and limb injuries and, less commonly, gill injuries. Except in the case of the gills, the other injuries were not lethal as the damaged parts regenerated. Statistical analysis confirmed a higher frequency and more damage in smaller larvae and at a higher density of specimens in aquariums. The negative impact of high density of specimens on their growth and development has also been confirmed. Providing an adequate amount of food is also not negligible. The results of the study represent an important basis for comparative studies of ontogeny and show the importance of optimal conditions for the husbandry of the Urodela larvae under laboratory conditions. biologija repate dvoživke Triturus carnifex larvalni razvoj preživetje vedenje biology Urodela Triturus carnifex larval development survival behaviour true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2021-11-26 07:15:02 2021-11-26 07:15:14 2022-09-12 04:16:12 0000-00-00 00:00:00 2021 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 202826 21666.pdf 21666.pdf 1 4FDDE6E45416742F6C65F390553583B8 8b95b433ae6e2bfeb1376293c043c067443caf536f93eb7a69e5d9536da8efb1 21e957d5-4e80-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151448 Biotehniška fakulteta 0 0 0