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undergraduate thesis
Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus
2020. urn:nbn:hr:137:135206
Ilijić, Lucia
University of Pula
Faculty of Natural Sciences

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Ilijić, L. (2020). Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus (Undergraduate thesis). Pula: University of Pula. Retrieved from https://urn.nsk.hr/urn:nbn:hr:137:135206

Ilijić, Lucia. "Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus." Undergraduate thesis, University of Pula, 2020. https://urn.nsk.hr/urn:nbn:hr:137:135206

Ilijić, Lucia. "Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus." Undergraduate thesis, University of Pula, 2020. https://urn.nsk.hr/urn:nbn:hr:137:135206

Ilijić, L. (2020). 'Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus', Undergraduate thesis, University of Pula, accessed 05 April 2025, https://urn.nsk.hr/urn:nbn:hr:137:135206

Ilijić L. Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus [Undergraduate thesis]. Pula: University of Pula; 2020 [cited 2025 April 05] Available at: https://urn.nsk.hr/urn:nbn:hr:137:135206

L. Ilijić, "Biološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus", Undergraduate thesis, University of Pula, Pula, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:137:135206

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Metadata
TitleBiološki učinci srebrnih nanočestica na larvalni razvoj ježinaca Paracentrotus lividus
Title (english)Biological effects of silver nanoparticles on the sea urchin Paracentrotus lividus larval development
AuthorLucia Ilijić
MentorDaniel Lyons (mentor)
MentorPetra Burić (komentor)
Committee memberMauro Štifanić (predsjednik povjerenstva)
Committee memberDaniel Lyons (član povjerenstva)
Committee memberInes Kovačić (član povjerenstva)
GranterUniversity of Pula
(Faculty of Natural Sciences)
Pula
Defense date and country2020-02-13, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Interdisciplinary Natural Sciences
Marine Science
Abstract
Nanočestice srebra (AgNP) imaju široku primjenu u medicinske, prehrambene, zdravstvene, potrošačke i industrijske svrhe. S obzirom na sve veću zastupljenost proizvoda koji sadrže AgNP očekuje se i sve veća opterećenost okoliša ovim nanočesticama, te raste važnost istraživanja koja se bave njihovim utjecajem na žive organizme. Cilj ovog rada bio je ispitati potencijalnu toksičnost AgNP na larvalni razvoj ježinca Paracentrotus lividus primjenom testa embrionalnog razvoja ježinca (SUEDT). Oplođene... More zigote ježinaca izložene su koncentracijama od 50, 100 i 500 μg/L AgNP te se nakon 48 h mjerila duljina larvi. Pri koncentracijama od 50 i 100 μg/L AgNP, uočen je porast u brzini razvoja i veličini larvi u odnosu na kontrolnu skupinu, a koncentracija od 500 μg/L AgNP uzrokovala je zastoj u razvoju larvi i značajno smanjenje duljine u odnosu na kontrolnu skupinu. S toga, provedba testa dokazala je da AgNP imaju toksičan učinak na ispitivanu vrstu ovisan o primijenjenoj dozi, a opaženi stimulacijski učinak nižih koncentracija na larvalni razvoj moguća je posljedica znanstvenog principa poznatog kao hormesis. Međutim, potrebno je provesti daljnja istraživanja kako bi se utvrdili točni mehanizmi paralelnog djelovanja AgNP i različitih abiotičkih faktora (pH, otopljeni kisik, temperatura, amonijak) na larvalni razvoj ove vrste te kako bi se utvrdio točan mehanizam interakcije AgNP sa oplođenim jajnim stanicama. Less
Abstract (english)
Silver nanoparticles (AgNPs) have gained widespread use in medical, health, consumer and industrial applications. Given the increasing use of products containing AgNPs, an increase in the amount released into the environment is also expected. Therefore, it is of growing importance to study the effects of AgNPs on living organisms. The aim of this study was to investigate the potential toxicity of AgNPs on the larval development of sea urchin Paracentrotus lividus. For this purpose, the sea... More urchin embryonal development test (SUEDT) was used. Fertilised zygotes of P. lividus were exposed to concentrations of 50, 100 and 500 μg/L AgNPs and larval length was measured after 48 hours. Larvae treated with 50 and 100 μg/L AgNPs showed an increase in size and development rate compared to the control, while larvae treated with 500 μg/L AgNPs exhibited a reduced development rate and were significantly smaller in size compared to the control. Thus, the test has shown that AgNPs have toxic effects on the test species dependent on the dose administered. The stimulatory effects observed in larvae treated with lower concentrations of AgNPs could possibly be related to hormesis. However, further studies should be conducted in order to clarify the precise mechanisms that AgNPs and different abiotic factors (pH, dissolved oxygen, temperature, ammonia) simultaneously exert on larval development. In addition, further studies should aim to improve understanding of the ways AgNPs interact with fertilised eggs of P. lividus. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:137:135206
Study programmeTitle: University Undergraduate Study Programme - Marine Sciences
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) znanosti o moru (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) znanosti o moru)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-10-06 09:38:46
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