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master's thesis
Morfološke osobitosti feminizacije u riba
Zagreb: University of Zagreb, Faculty of Veterinary Medicine, 2017. urn:nbn:hr:178:271368
Karađole, Marija
University of Zagreb
Faculty of Veterinary Medicine
Department of Anatomy, Histology and Embriology

Institutional repository: Repository of Faculty of Veterinary Medicine

Cite this document

Karađole, M. (2017). Morfološke osobitosti feminizacije u riba (Master's thesis). Zagreb: University of Zagreb, Faculty of Veterinary Medicine. Retrieved from https://urn.nsk.hr/urn:nbn:hr:178:271368

Karađole, Marija. "Morfološke osobitosti feminizacije u riba." Master's thesis, University of Zagreb, Faculty of Veterinary Medicine, 2017. https://urn.nsk.hr/urn:nbn:hr:178:271368

Karađole, Marija. "Morfološke osobitosti feminizacije u riba." Master's thesis, University of Zagreb, Faculty of Veterinary Medicine, 2017. https://urn.nsk.hr/urn:nbn:hr:178:271368

Karađole, M. (2017). 'Morfološke osobitosti feminizacije u riba', Master's thesis, University of Zagreb, Faculty of Veterinary Medicine, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:178:271368

Karađole M. Morfološke osobitosti feminizacije u riba [Master's thesis]. Zagreb: University of Zagreb, Faculty of Veterinary Medicine; 2017 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:178:271368

M. Karađole, "Morfološke osobitosti feminizacije u riba", Master's thesis, University of Zagreb, Faculty of Veterinary Medicine, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:178:271368

Metadata
TitleMorfološke osobitosti feminizacije u riba
Title (english)Morphology of Fish Feminization
AuthorMarija Karađole
MentorSrebrenka Nejedli (mentor)
Committee memberZvonimir Kozarić (predsjednik povjerenstva)
Committee memberGoran Bačić (član povjerenstva)
Committee memberSrebrenka Nejedli (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Veterinary Medicine
(Department of Anatomy, Histology and Embriology)
Zagreb
Defense date and country2017-02-22, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Veterinary Medicine
Abstract
Brojna istraživanja diljem svijeta izvijestila su o raširenoj pojavi abnormalnog seksualnog razvoja slatkovodnih i morskih riba. U riba su utvrđene povišene koncentracije vitelogenina u krvnoj plazmi mužjaka, te nalaz oocita u testikularnom tkivu kao znak feminizacije reproduktivnog sustava. Ovakva pojava oocita uočena je u riba kod zagađenja voda endokrinim modulatorima koji na taj način utječu na njihovu feminizaciju. Endokrini modulatori su prirodni i sintetički spojevi koji utječu antagonistički ili agonistički na endokrini sustav organizma, a mogu se pronaći u brojnim proizvodima, kao što su plastika, lijekovi, pesticidi, fungicidi i kozmetika. Najčešća metoda određivanja feminizacije u riba je mikroskopska metoda pretrage histoloških preparata testisa. S ciljem da se što ranije otkriju endokrini modulatori i njihovo štetno djelovanje na ribe provodi se biomonitoring. Takva metoda temelji se na biomarkerima i vrlo je važna u procjeni promjena u okolišu.
Abstract (english)
Abnormal sexual development in fish has become the topic of interest in scientific circles. Many studies have shown that intersexual changes are present in population of wild fish and also in marine fish. An analysis of plasma that was collected from male adults revealed high concentrations of vitellogenin and also the presence of oocytes in testicular tissue. Those changes are sign of feminization of the reproductive system. This phenomenon was found in fish from the area of water pollution that was caused by endocrine disrupting chemicals (EDCs). Endocrine disruptors are both natural and synthetic compounds that are present in various products such as plastic, pesticides, fungicides, medicines and cosmetics. Influence of EDCs is based on its agonistic and antagonistic effects on the endocrine system. The most common method that was used to determine fish feminization is hystological examination of testicles from male adults. Biomonitoring is carried out with the aim of early detection of the influence of EDCs. The method is based on biomarkers and is very important in the assessment of environmental change.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:178:271368
Study programmeTitle: Veterinary Medicine
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: doktor/doktorica veterinarske medicine (doktor/doktorica veterinarske medicine)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2018-07-24 06:42:25