Parazitizam u puževa

undergraduate thesis

• Title (english): Parasitism in snails
• Author: Emanuel Gaši
• Mentor: Jasna Lajtner (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2018, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Dvorodni metilji predstavljaju brojnu skupinu parazitskih organizama koji izazivaju teške bolesti u svojim domaćinima. Glavne međudomadare za velik broj dvorodnih metilja predstavljaju puževi iz rodova kao što su Bulinus, Biomphalaria, Oncomelania i Lymnaea. Njihov odnos je vrlo kompleksan te i dalje nedovoljno objašnjen. U ovom radu opisan je životni ciklus parazita iz rodova Fasciola i Schistosoma kao i odnos sa njihovim međudomadarima koji su neophodni za razvoj samih parazita. Razumijevanje života i karakteristika parazita kao i ekologije puževa međudomadara neophodno je ukoliko se želi zaustaviti širenje bolesti i snažan negativni socio-ekonomski utjecaj u državama u kojima su bolesti rasprostranjene. Kao zaključak teme, razmatrane su metode kojima se pokušavaju suzbiti epidemije bolesti i regulirati populacije puževa, od mehaničkih metoda ciljanog uklanjanja pojedinih inficiranih vrsta do neselektivnih, invazivnih, kemijskih metoda kojima se degradira čitav ekosustav. Parazitizam u puževa je iznimno važan dio parazitskog životnog ciklusa te kao takav, ključan u pokušajima prevencije bolesti uzrokovanih dvorodnim metiljima. Daljnja istraživanja i bolja edukacija ljudi je neophodna kako bi smanjili globalni utjecaj tih bolesti te osigurali prosperitetniju budućnost za države trećeg svijeta.

Abstract (english)

The Digenetic Trematodes include a vast majority of parasitic organisms which cause diseases in their hosts. The Main intermediate hosts for majority of Digenetic Trematodes are snails represented in following genus: Bulinus, Biomphalaria, Oncomelania and Lymnaea. The relationship between snail host and parasite is very complex and still not fully explained. In this paper, the focus is on life cycles of two parasitic Trematodes, Fasciola and Schistosoma with their intermediate hosts required for parasitic development. Understanding the characteristics and life cycle of parasites including the ecology of disease bearing snail hosts, is crucial for successfully controlling the spreading of disease and negativ socio-economic impact in disease infected countries. In conclusion, the methods used for preventing the epidemic and regulating snail populations have been considered. From mechanical methods used in extracting specified infected snails to non-selective, invasive, chemical methods which can cause degradation of entire ecosystem. Parasitism in snails is inevitable in parasitic life cycle, therefore it is the key element for preventing the Digenetic Trematode caused diseases. Further research and better understanding is required for minimising the global influence of snail bearing diseases and for securing a better future in the third world countries.

• Keywords: puževi; parazitizam
• Language: croatian
• URN:NBN: urn:nbn:hr:217:560549
• 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: 2018-10-10 09:19:33