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undergraduate thesis
Hobotnica: etološki fenomen mora
Zagreb: University of Zagreb, Faculty of Science, 2023. urn:nbn:hr:217:044382
Kovačević, Lina
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Kovačević, L. (2023). Hobotnica: etološki fenomen mora (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:044382

Kovačević, Lina. "Hobotnica: etološki fenomen mora." Undergraduate thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:044382

Kovačević, Lina. "Hobotnica: etološki fenomen mora." Undergraduate thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:044382

Kovačević, L. (2023). 'Hobotnica: etološki fenomen mora', Undergraduate thesis, University of Zagreb, Faculty of Science, accessed 02 October 2024, https://urn.nsk.hr/urn:nbn:hr:217:044382

Kovačević L. Hobotnica: etološki fenomen mora [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Science; 2023 [cited 2024 October 02] Available at: https://urn.nsk.hr/urn:nbn:hr:217:044382

L. Kovačević, "Hobotnica: etološki fenomen mora", Undergraduate thesis, University of Zagreb, Faculty of Science, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:217:044382

Metadata
TitleHobotnica: etološki fenomen mora
Title (english)The octopus: an ethological marine phenomenon
AuthorLina Kovačević
MentorMaria Špoljar (mentor)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2023-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Gubitkom vanjske i unutrašnje ljušture zbog selekcijskog pritiska koštunjača u mezozoiku, u hobotnica (Octobrachia) se razvio niz adaptacija na marinski okoliš. Cilj ovog rada je opisati anatomsko-fiziološke i bihevioralne prilagodbe koje ujedinjuje rad visoko cefaliziranog živčanog sustava. Od predatora hobotnice se brane izbacivanjem tinte, aposematičkom obojanošću i mimikrijom. Koordiniraju vizualni, živčani i pokrovni sustav kako bi imitirale okoliš ili drugi organizam promjenom obojanosti i teksture kože. U lovu koriste nekoliko tehnika služeći se razvijenim vizualnim osjetilima i kemosenzornim prijanjaljkama lociranim na pokretljivim krakova. Ženke se pare jednom u životu s više muških partnera kako bi osigurale genetski kvalitetno potomstvo o kojem se brine. Roditeljske jedinke umiru nedugo nakon što se izlegnu mlade hobotnice. U svom kratkom životnom ciklusu razvijaju inteligenciju i kognitivne sposobnosti kojima se izdvajaju od ostalih beskralježnjaka. Daljnjim istraživanjem prilagodbi hobotnice u promjenjivim okolišnim uvjetima, stvorit će se šira slika o evoluciji adaptacija i važnosti hobotnica u marinskim ekosustavima.
Abstract (english)
With the loss of the external and internal shell, octopus (Octobrachia) developed a series of adaptations to the selection pressure of teleosts in the Mesozoic. This survey aims to point out the anatomical and behavioral adaptations united by the work of the highly cephalized nervous system. Defense mechanisms include ejecting ink, aposematic coloration, and mimicry. They coordinate the visual, nervous, and integumentary systems to imitate the environment or another organism by changing the coloration and texture of the skin. Several hunting techniques combine developed visual senses and chemosensory suckers located on octopus’ mobile arms. Females mate once in their lifetime with several male partners to ensure genetically quality offspring she cares for. The parents die soon after their offspring hatches. In their short life cycle, they develop intelligence and cognitive abilities that set them apart from other invertebrates. Further research into octopus’ adaptations to changing environmental conditions will create a broader insight into the evolution of adaptations and the importance of octopuses in marine ecosystems.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:044382
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-09-25 09:46:39