Biološke i ekološke značajke reda Rajiformes i njihova ugroženost u Jadranskom moru

undergraduate thesis

• Title (english): Biological and ecological characteristics of the order Rajiformes and their endangerment in the Adriatic Sea
• Author: Petra Savić
• Mentor: Zoran Marčić (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-09-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Red Rajiformes pripada nadredu Batoidea i predstavlja skupinu s najvećim brojem validnih vrsta
među hrskavičnjačama. Ipak, njihov vrlo uniforman izgled često je razlog pogrešnim
identifikacijama vrsta, što ostavlja prostor za krive procjene njihove distribucije, abundancije i
statusa. Njihove biološke značajke usko su povezane sa staništem u kojem žive, što je u ovom
slučaju duboko more s niskom primarnom produkcijom. Kao rezultat toga im je dostupna mala
količina energije koja je kod pripadnika ovog reda kao vršnih predatora usmjerena na
preživljavanje, a ne na reprodukciju, što ih čini vrlo ranjivim na antropogene pritiske, osobito
ribolov i degradaciju staništa. Cilj ovog rada je na temelju dostupnih podataka prikazati
interakciju Jadranskog mora kao staništa sa biološkim karakteristikama i ekologije 13 vrsta
prisutnih u Jadranu. Holistički prikaz ovih interakcija ključan je za razumijevanje njihovog rizika
od izumiranja, a time i za određivanje adekvatnih mjera njihovog očuvanja

Abstract (english)

The order Rajiformes belongs to the superorder Batoidea and represents the group with the
largest number of valid species among cartilaginous animals. However, their very uniform
appearance is often the reason for misidentification of species, which leaves room for wrong
estimates of their distribution, abundance and status. Their biological characteristics are closely
related to the habitat they live in, which in this case are deep waters with low primary production.
As a result, a small amount of energy is available to them, which in members of this order, as top
predators, is focused on survival and not on reproduction, which makes them very vulnerable to
anthropogenic pressures, especially fishing and habitat degradation. The aim of this paper is to
present, based on available data, the interaction of the Adriatic Sea as a state with the features of
the life history and ecology of 13 species present in the Adriatic. A holistic view of these
interactions is crucial for understanding their risk of extinction, and thus for determining
adequate conservation measures.

• Keywords: Raže; bentos; crvena lista (IUCN); hranidbena mreža; očuvanje
• Keywords (english): Skates; benthos; Red List (IUCN); food web; conservation
• Language: croatian
• URN:NBN: urn:nbn:hr:217:370896
• Study programme: Title: Ecology; 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-26 12:20:30