Migracije jesetri (Acipenseridae) u Republici Hrvatskoj

undergraduate thesis

• Title (english): Sturgeon (Acipenseridae) migrations in the Republic of Croatia
• Author: Martina Topić
• Mentor: Zoran Marčić (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2020, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Jesetre (Acipenseridae) su porodica dugoţivućih migratornih riba, koje poduzimaju migracije iz mora u rijeke ili duţ rijeke kako bi pronašle odgovarajuće podruĉje za mrijest. U Republici Hrvatskoj zabiljeţene su sljedeće vrste iz te porodice: Acipenser gueldenstaedtii, A. naccarii, A. nudiventris, A. ruthenus, A. stellatus, A. sturio i Huso huso. U Hrvatskoj su kroz povijest zabiljeţene u Jadranskom moru i rijekama koje u njega utjeĉu (Cetina i Neretva), i u Dunavu i rijekama koje u njega... More utjeĉu (Sava, Kupa, Mura, Drava, Una, Lonja). Vrste pronaĊene na jadranskoj obali i rijekama (A. naccarii, A. stellatus i A. sturio) su se u prošlosti rijetko nalazile, a sad još rjeĊe. Te vrste, kao i one iz Dunava i njegovih pritoka (A. gueldenstaedtii, A. nudiventris, A. ruthenus, A. stellatus, A. sturio i H. huso), većinom ugroţava pretjeran izlov, oneĉišćenje voda i izgradnja brana, koja uzrokuje fragmentaciju populacija i prestanak migracija. Nekoć ĉeste u Dunavu i pritocima, tokom 20. st., a osobito nakon izgradnje brana Đerdap I i II u Srbiji, broj se jedinki svih zabiljeţenih vrsta smanjio te se sve vrste, osim A. ruthenus, u Hrvatskoj smatraju regionalno izumrlima. Oĉuvanje preostalih populacija jesetri koje borave u dunavskom i jadranskom slijevu i njihovo povećanje moţe se postići meĊunarodnom suradnjom izmeĊu drţava na Dunavu i Jadranskom moru, stroţim zakonima koji bi regulirali lov na jesetre i zaustavili krivolov, reintrodukcijom jesetri u rijekama pomoću uzgoja, i uklanjanjem ili zaobilaţenjem barijera koje zaustavljaju migracije jesetri. Less

Abstract (english)

Sturgeons (Acipenseridae) are a family of long-living migratory fishes, which undertake migrations from the sea to rivers or along the river, so they could find suitable spawning grounds. In the Republic of Croatia, the following species of sturgeons have been recorded: Acipenser gueldenstaedtii, A. naccarii, A. nudiventris, A. ruthenus, A. stellatus, A. sturio and Huso huso. In Croatia, these species were recorded in the Adriatic sea and its tributaries (Cetina, Neretva), and in the... More Danube river and its tributaries (Sava, Kupa, Mura, Drava, Una, Lonja). Sturgeon species found on the Adriatic coast and rivers (A. naccarii, A. stellatus and A. sturio) were a rare find and remain so. Like Danube and Danube tributaries species (A. gueldenstaedtii, A. nudiventris, A. ruthenus, A. stellatus, A. sturio and H. huso), they are mostly endangered by overfishing, water pollution, and dam building, which causes fragmentation of populations and cease of migration. Once abundant in Danube and its tributaries, during the 20th century, especially after the construction of Djerdap I and II dams in Serbia, numbers of all species recorded have gone down, and all of them, except A. ruthenus, are considered regionally extinct in Croatia. To save remaining sturgeon stocks in Croatia, and to ensure their growth, there is a need for international cooperation between countries on Danube and Adriatic sea, stricter laws which will regulate sturgeon fishing and suppress poaching, reintroduction of sturgeons in rivers through sturgeon farming, and removing or bypassing barriers which stop sturgeon migrations. Less

• Keywords: migratorne ribe
• Language: croatian
• URN:NBN: urn:nbn:hr:217:479250
• Study programme: Title: Ecology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-10-07 11:22:07