Utjecaj endokrinih disruptora na reproduktivna svojstva mekušaca u moru

undergraduate thesis

• Title (english): Impact of endocrine disruptors on reproduction of sea molluscs
• Author: Lorena Gračanin
• Mentor: Romana Gračan (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2024-07-02, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Mnoge vrste koje pripadaju koljenu mekušaca imaju veliku komercijalnu i ekološku važnost. Poseban naglasak stavlja se na skupine, ponajviše školjkaše i puževe, koji služe kao bioindikatori u okolišnim studijama, uglavnom vezanim uz čistoću voda. Neke komponente donesene u okoliš mogu znatno utjecati na njihovo razmnožavanje i razvoj. Te komponente nazvane su EDC (Endocrine disrupting compounds) ili ED (endocrine disruptors), a ovisno o proučavanoj vrsti, njihov utjecaj je različit. Možemo ih podijeliti u tri skupine. Androgene, kseno-estrogene i antiandrogene. Najbolje istražena pojava kod mekušaca je imposeks fenomen koji je uočen prvenstveno kod prosobranhijalnih puževa, a primarni uzročnik je tributil-kositar (TBT) koji je možda najbitniji primjer endokrinog disruptora (ED) u moru unesen od strane čovjeka. Još je niz pojava uzrokovanih ED-a, no nisu tako detaljno proučene.

Abstract (english)

Many species which belong to phylum Mollusca have great commercial and ecological importance. Special emphasis is on the species, specifically bivalves and gastropods, which are used as bioindicators in environmental studies, mainly about water quality. There are a lot of anthropogenic components in environment which affect animal endocrine system, including their reproduction. They are called EDCs (Endocrine disrupting compounds) or EDs (endocrine disruptors) and they have different impact on investigated species. We can divide EDin three categories: xeno-estrogens, androgens and antiandrogens. The most known phenomenon in molluscs, specifically prosobranchial snails, is imposex, which is direct consequence of trybutyl-tin (TBT), an organogenic compound introduced in the environment by human. There are more deformations caused by EDs, but they have to be researched more thoroughly yet.

• Keywords: imposeks; tributilkositar; TBT; hormoni
• Keywords (english): TBT; tybutil-tin; imposex; hormons; xeno-estrogens; antiandrogens
• Language: croatian
• URN:NBN: urn:nbn:hr:217:374049
• 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: 2024-07-02 11:54:49