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undergraduate thesis
Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau
Zagreb: University of Zagreb, Faculty of Science, 2024. urn:nbn:hr:217:564033
Kralj, Vid
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Kralj, V. (2024). Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:564033

Kralj, Vid. "Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau." Undergraduate thesis, University of Zagreb, Faculty of Science, 2024. https://urn.nsk.hr/urn:nbn:hr:217:564033

Kralj, Vid. "Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau." Undergraduate thesis, University of Zagreb, Faculty of Science, 2024. https://urn.nsk.hr/urn:nbn:hr:217:564033

Kralj, V. (2024). 'Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau', Undergraduate thesis, University of Zagreb, Faculty of Science, accessed 07 December 2024, https://urn.nsk.hr/urn:nbn:hr:217:564033

Kralj V. Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Science; 2024 [cited 2024 December 07] Available at: https://urn.nsk.hr/urn:nbn:hr:217:564033

V. Kralj, "Fiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau", Undergraduate thesis, University of Zagreb, Faculty of Science, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:217:564033

Metadata
TitleFiziologija prilagodbe na dugotrajno ronjenje pripadnika naroda Bajau
Title (english)Physiology of adaptation to breath-hold diving in Bajau people
AuthorVid Kralj
MentorZoran Tadić (mentor)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2024-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Bajau su tradicionalno nomadski narod koji se uzdržavaju podvodnim ribolovom i sakupljanjem uz ronjenje na dah. Tema su više istraživanja fizioloških procesa koji štite tijelo od uvjeta hipoksije, jer provode značajnu količinu vremena svakodnevno roneći na dah bez negativnih posljedica. Jedan od mehanizama koji omogućuje zaštitu u uvjetima izazvanim apnejom je refleks ronjenja. Taj multikomponentni odgovor tijela sastoji se od promjene rada srca, izmjenjene raspodijele krvi u tijelu i kontrakcije slezene koja pridonosi promjenjenom sastavu krvi. Te promjene zajedno omogućuju bolju toleranciju hipoksije. Bajau su možda dobar model za istraživanje kako modifikacijom ovih osnovnih procesa, koji su prisutni u svim ljudima i u određenoj mjeri svim kralježnjacima koji dišu zrak, mogu nastati fenotipska obilježja koja čine ovaj narod posebno dobro prilagođenim za specifičan način života. U razvoju nekih prilagodbi kod Bajau bili su važni genetski faktori dok je značajan učinak fenotipke plastičnosti u nekim drugim svojstvima poput sposobnosti vida pod vodom koja je zamjećena u ovoj populaciji. Narod Bajau zanimljiv je i u širem kontekstu istraživanja morskih sisavaca, zbog razumijevanja evolucijskih promjena koje su omogućile prelazak kopnenih životinja u vodeni okoliš.
Abstract (english)
The Bajau people encompass groups that have traditionally been marine underwater hunters and gatherers that engage in breath-hold diving. Their daily hunting pattern consists of staying up to several hours underwater, which has made them a target of interest to physiologists studying human internal defenses against hypoxic conditions. One such mechanism is the diving reflex, a process that introduces changes in heart rate, vascular tone and constricts the spleen in response to apnea. This allows humans a degree of tolerance to hypoxia and the Bajau might be a good model for studying this reflex and how further modifications of this process might make these people better adapted for their specific lifestyle. Genetic factors have been implicated in some of the peculiarities of the Bajau phenotype concerning the differing parameters of the diving reflex, while other characteristics such as good reported under water vision might be due to phenotypic plasticity. Studying the Bajau might also have merit as a model for understanding the evolutionary changes that led to the development of marine mammals out of terrestrial animals.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:564033
Study programmeTitle: Biology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-09-03 12:40:56