Obraštaj na sakupljačima ličinki školjkaša u Nacionalnom parku Brijuni

master's thesis

• Title (english): Fouling on bivalve larval collectors in Brijuni National Park
• Author: Dajana Kujundžić
• Mentor: Tatjana Bakran-Petricioli (mentor)
• Committee member: Tatjana Bakran-Petricioli (predsjednik povjerenstva)
• Committee member: Zoran Tadić (član povjerenstva)
• Committee member: Sven Jelaska (član povjerenstva)
• Committee member: Jasna Hrenović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2022-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U sklopu međunarodnog Horizon 2020 projekta Marine Ecosystem Restoration in
Changing European Seas (MERCES) u području infralitoralne zone uvale Javorike unutar
Nacionalnog parka Brijuni bili su od lipnja do listopada 2019. godine postavljeni sakupljači za
mlađ školjkaša izrađeni od mrežastih plastičnih vreća. Sakupljači su bili postavljeni u triplikatu,
na 6, 8 i 10 m dubine, ukupno devet sakupljača, a prvenstveno su bili namijenjeni hvatanju
mlađi kritično ugrožene plemenite periske (Pinna nobilis Linnaeus, 1758). Cilj rada bio je
utvrditi ukupnu kvalitativnu i kvantitativnu raznolikost organizama makro-obraštaja na
sakupljačima nakon četiri i pol mjeseca u moru. U bogatoj i raznolikoj obraštajnoj zajednici
(ukupno 3731 jedinke, prosječno po sakupljaču 414,6±102,9) zabilježeno je 36 svojti
makrobentosa među kojima su dominirali školjkaši (17 vrsta, ukupno 2793 jedinke, 74,9% po
brojnosti) te rakovi (11 svojti, ukupno 879 jedinki, 23,6% po brojnosti). Najbrojnija vrsta
obraštaja bio je školjkaš Limaria hians s udjelom od 17,7% u brojnosti. Juvenilne plemenite
periske sa 72 jedinke čine 1,9% udjela. Najmanja duljina ljušture plemenite periske bila je 0,4
cm, a najveća 6,3 cm. Naseljavanje ličinki plemenite periske u sakupljače ukazuje da je 2019.
godine u okolišu bilo dovoljno adultnih jedinki koje su se uspješno mrijestile. U obraštaju je
zabilježena invazivna vrsta školjkaša Anadara transversa s 10,8% po brojnosti (404 jedinke).

Abstract (english)

This study was part of the international Horizon 2020 project Marine Ecosystem
Restoration in Changing European Seas (MERCES). Collectors for juvenile bivalves made of
mesh plastic bags were set up in the infralittoral zone of Javorike Bay, Brijuni National Park,
from June to October 2019. Collectors were placed in triplicate, at 6, 8 and 10 m depth, nine
collectors in total, and were primarily intended to catch juveniles of critically endangered noble
pen shell (Pinna nobilis Linnaeus, 1758). The aim of this thesis was to determine the overall
qualitative and quantitative diversity of macro-fouling organisms on collectors after being
submerged four and a half months. In rich and diverse fouling community (3731 individuals in
total, an average of 414.6 ± 102.9 per collector), 36 macrobenthos taxa were recorded,
dominated by bivalves (17 species, 2793 individuals, 74.9% of total recruitment) and
crustaceans (11 taxa, 879 individuals, 23.6% of total recruitment). The most numerous species
of biofouling was the bivalve Limaria hians with 17.7% of total recruitment. Juvenile noble
pen shell with 72 individuals make up 1.9% of total recruitment. The minimum length of the
noble pen shell was 0.4 cm and the maximum 6.3 cm. Larval colonization of noble pen shell in
collectors indicates that in 2019 were enough adult individuals in the environment that
successfully spawned. An invasive bivalve species Anadara transversa was recorded in the
biofouling with 10.8% of total recruitment (404 individuals).

• Keywords: Pinna nobilis; plemenita periska; raznolikost obraštaja; Limaria hians; invazivna vrsta Anadara transversa
• Keywords (english): Pinna nobilis; noble pen shell; fouling diversity; Limaria hians; invasive species Anadara transversa
• Language: croatian
• URN:NBN: urn:nbn:hr:217:653687
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-03-23 13:19:39