Karpkala ja kalatäi (argulus) suhetest ning parasiidi tõrjumise võimalustest
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Kuupäev
2025
Kättesaadavus
05.09.2025
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Praegusel ajal rajatakse üha rohkem kalakasvandusi, kuid inimestel puuduvad teadmised haigustest ja parasiitidest, kes võivad ohustada nende kasvandust. Antud töö põhineb teoreetilisest osast, mida koostati erinevate artiklite põhjal ja praktilisest osast, mida viidi läbi Silla talu kalatiigis. Bakalaureusetöö teoreetilise poole eesmärk on välja selgitada, kes on üldse kalatäi, mida ta kaladele põhjustab ja kuidas saaks nakatunud veekeskkonda ravida. Praktilise töö eesmärk oli, maakodu tiigist võimalikult palju kalu välja püüda, need kaaluda, mõõta, visuaalselt üle kontrollida, kas kehapinnal on täisid või mitte, ning täide olemasolul need piiritusse korjata, et mikroskoopilised uurimised teha ja liik kindlaks määrata. Tulemustest selgus, et tegemist on kalade ektoparasiidiga, kes kalade kehapinnal toitub nende verest. Samuti välja püütud kalade andmete põhjal tehti matemaatilised arvutused ja selgus, et mida suurem kala seda rohkem on tema keha pinnal kalatäisid. Kokkuvõtteks võiks seda parasiiti rohkem uurida ka Eestis ja välja selgitada parem viis nendest parasiitidest lahtisaamiseks, ning ka inimestele rohkem kättesaadavamaks tuua informatsioon selle ektoparasiidi kohta.
Nowadays, more and more fish farms are being established, but people lack knowledge about the diseases and parasites that can threaten their farms. The present work is based on a theoretical part, which is based on various articles, and a practical part, which was carried out in the fish farm of Silla Farm. The aim of the theoretical part of the thesis is to find out who the fish parasite is, what it causes to fish and how an infected aquatic environment can be treated. The aim of the practical work was to catch as many fish as possible from the farm pond, weigh them, measure them, visually check whether or not there are lice on the surface of the body and, if lice are present, harvest them into the pond for microscopic examination and species identification. The results showed that it is a fish ectoparasite that feeds on the blood on the body surface of the fish. Mathematical calculations were also carried out on the data from the fish caught and it was found that the larger the fish, the more fish eggs there are on the surface of its body. In conclusion, more research on this parasite could be done in Estonia to find a better way to get rid of these parasites, and also to make information on this ectoparasite more accessible to the public.
Nowadays, more and more fish farms are being established, but people lack knowledge about the diseases and parasites that can threaten their farms. The present work is based on a theoretical part, which is based on various articles, and a practical part, which was carried out in the fish farm of Silla Farm. The aim of the theoretical part of the thesis is to find out who the fish parasite is, what it causes to fish and how an infected aquatic environment can be treated. The aim of the practical work was to catch as many fish as possible from the farm pond, weigh them, measure them, visually check whether or not there are lice on the surface of the body and, if lice are present, harvest them into the pond for microscopic examination and species identification. The results showed that it is a fish ectoparasite that feeds on the blood on the body surface of the fish. Mathematical calculations were also carried out on the data from the fish caught and it was found that the larger the fish, the more fish eggs there are on the surface of its body. In conclusion, more research on this parasite could be done in Estonia to find a better way to get rid of these parasites, and also to make information on this ectoparasite more accessible to the public.
Kirjeldus
Bakalaureusetöö
Kalanduse ja rakendusökoloogia õppekaval
Märksõnad
bakalaureusetööd, kalatäi, tõrjumisviis