Alohtone vrste ponto-kaspijskih glavoča u Hrvatskoj

undergraduate thesis

• Title (english): Non-native species of ponto-caspian gobies in Croatia
• Author: Ana Novak-Perjanec
• Mentor: Perica Mustafić (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

Alohtone vrste pojavljuju se van svog prirodnog područja rasprostranjenosti, a namjerno su ili slučajno prenesene u novo stanište. Alohtone vrste ponto-kaspijskih glavoča (porodica Gobiidae) prisutne u Hrvatskoj su glavočić okrugljak (Neogobius melanostomus), riječni glavoč (Neogobius fluviatilis), keslerov glavočić (Ponticola kessleri) i glavočić trkač (Babka gymnotrachelus). Prirodno su rasprostranjeni u području Azovskog, Crnog i Kaspijskog mora te donjim i srednjim tokovima rijeka koje se u njih ulijevaju. U gotovo sve zemlje sjeverne i središnje Europe proširili su se rijekama i povezanim vodenim putovima. U Hrvatskoj su rasprostranjeni u dunavskom slijevu, osobito u Dunavu i donjim tokovima rijeka koje se u njega ulijevaju. Predstavljaju prijetnju velikoj raznolikosti autohtonih slatkovodnih ribljih vrsta u Hrvatskoj. Ponto-kaspijski glavoči vrlo se dobro i brzo prilagođavaju novom staništu. Kompeticija za hranu i stanište, predacija na ribljim jajašcima, ličinkama i juvenilnim jedinkama te manjim vrstama riba mogući su uzroci negativnog utjecaja ponto-kaspijskih glavoča na autohtone vrste. Rezultati provedene FISK (eng. Fish Invasiveness Scoring Kit) analize za Hrvatsku pokazuju kako je glavočić okrugljak visoko rizična invazivna vrsta, a riječni glavoč, keslerov glavočić i glavočić trkač umjereno su do visoko rizične invazivne vrste. Kako bi se pratio utjecaj alohtonih vrsta ponto-kaspijskih glavoča na autohtone vrste, potreban je stalan monitoring ribljih zajednica slatkovodnih ekosustava.

Abstract (english)

Non-native species appear outside their natural habitat, where they have been either intentionally or accidentally transferred to. Non-native species of Ponto-Caspian gobies (family Gobiidae) present in Croatia are the round goby (Neogobius melanostomus), monkey goby (Neogobius fluviatilis), bighead goby (Ponticola kessleri) and racer goby (Babka gymnotrachelus). They are naturally distributed throughout the Azov, Black and Caspian Sea as well as the lower and middle reaches of the rivers that flow into them. They spread to almost all countries of northern and central Europe by rivers and connected waterways. In Croatia, they are widespread in the Danube basin, especially in the river Danube and the lower reaches of the rivers that flow into it. They pose a threat to the great diversity of native freshwater fish species in Croatia. Ponto-Caspian gobies adapt very well and quickly to a new habitat. Competition for food and habitat, preying on fish eggs, larvae, juveniles, and smaller fish species are possible causes of the negative impact of Ponto-Caspian gobies on native species. The results of the FISK (Fish Invasiveness Scoring Kit) analysis for Croatia show that the round goby is a high-risk invasive species, while the monkey goby, bighead goby, and racer goby are moderate to high-risk invasive species. To monitor the impact of non-native species of Ponto-Caspian gobies onto native species, continuous monitoring of fish communities in freshwater ecosystems is needed

• Keywords: alohtone vrste; ponto-kaspijski glavoč
• Language: croatian
• URN:NBN: urn:nbn:hr:217:318209
• Study programme: Title: Environmental Sciences; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-09-24 08:23:23