Kontrolirani mrijest bijelog amura (Ctenopharyngodon idella) i šarana (Cyprinus carpio) na ribnjačarstvu Crna Mlaka

master's thesis

• Title (english): Controlled spawning of grass carp (Ctenopharyngodon idella) and common carp (Cyprinus carpio) on fish farm Crna Mlaka
• Author: Matija Konječić
• Mentor: Daniel Matulić (mentor)
• Committee member: Daniel Matulić (predsjednik povjerenstva)
• Committee member: Tea Tomljanović (član povjerenstva)
• Committee member: Ana Gavrilović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2022-07-08, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Kontrolirani mrijest bijelog amura i šarana na ribnjačarstvu „Crna Mlaka“ vršen je od travnja do lipnja 2022. godine. Upotrijebljena je suha metoda istiskivanja spolnih produkata i oplodnje nakon čega je uslijedila inkubacija ikre šarana u McDonalnd posudama, a nakon valjenja ličinke su prebačene u Weissove posude. Ikra bijelog amura nakon oplodnje je prebačena direktno u Weissove posude. Inkubacijom ikre na 22°C do valjenja ličinki dolazi za 85 sati kod šarana, te 25 sati kod amura. Prosječna tjelesna masa ženskih matica šarana iznosila je 7,47 ± 1,68 kg, a ispustile su prosječno 0,875 ± 0,329 kg ikre. Matice bijelog amura prosječne mase 9,82 ± 0,98 kg a ispustile 0,89 ± 0,195 kg ikre. Prosječna vrijednost omjera produciranih jaja na veličinu mase za šarana iznosi 11,97%, dok za bijelog amura iznosi 9,27%.

Abstract (english)

Controlled spawning of grass carp and common carp was conducted from April to June 2022 at the Crna Mlaka fish farm. Dry method of controlled spawning was used, followed by incubation of common carp eggs in McDonalds containers, and after hatching of larvae they were transferred to Weiss's containers. Grass carp eggs were transferred directly into Weiss's containers after fertilisation. From common carp eggs incubated at 22 ⁰C, larvae hatched after 85 hours, from grass carp eggs after 25 hours. In the study, the average body weight of female common carp broodstock was 7.47 ± 1.68 kg while they produced 0.875 ± 0.329 kg of fry. Grass carp female broodstocks had an average body weight of 9.82 ± 0.98 kg, and they produced 0.89 ± 0.195 kg of fry. The average value of the ratio of eggs produced to mass was 11.97% for common carp and 9.27% for grass carp.

• Keywords: bijeli amur; šaran; kontrolirani mrijest
• Keywords (english): grass carp; common carp; controlled spawning
• Language: croatian
• URN:NBN: urn:nbn:hr:204:571459
• Study programme: Title: Fisheries and Game Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka ribarstva i lovstva (magistar/ magistra inženjer/inženjerka ribarstva i lovstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2022-08-17 11:09:45