Epifauna slatkovodnih rakova iz reda Decapoda u Hrvatskoj

master's thesis

• Title (english): Epifauna on freshwater crayfish (Crustacea: Decapoda) in Croatia
• Author: Ana Korša
• Mentor: Ivana Maguire (mentor)
• Mentor: Maria Špoljar (mentor)
• Committee member: Ivana Maguire (predsjednik povjerenstva)
• Committee member: Duje Lisičić (član povjerenstva)
• Committee member: Zlatko Liber (član povjerenstva)
• Committee member: Renata Matoničkin Kepčija (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2016-02-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Istraživanje epifaune slatkovodnih rakova kao bazibionata provedeno je tijekom proljetnoljetnog
razdoblja 2014. i 2015. godine. Fauna je prikupljena s pet slatkovodnih vrsta rakova
(Decapoda): tri autohtone vrste (Astacus astacus, Austropotamobius pallipes,
Austropotamobius torrentium) i dvije alohtone vrste (Pacifastacus leniusculus, Procambarus
fallax f. virginalis). Ciljevi ovog rada bili su: (i) analizirati sve skupine epifaune na
slatkovodnim rakovima reda Decapoda, (ii) usporediti epifaunu rakova s faunom okolnog
sedimenta i perifitona, (iii) usporediti epifaunu pojedinih vrsta rakova, posebno autohtonih i
alohtonih. Zabilježeno je 44 različitih svojti epifaune od čega je brojnošču prevladavala
skupina Ciliophora s vrstom Vorticella campanula i rodom Epistylis. Skupina Rotifera
zabilježena je kao najraznolikija, a najbrojnije vrste bile su Lepadella parasitica i
Dicranophorus hauerianus. Predstavnici branhiobdela potvrđeni su kao epibionti rakova te je
po prvi put na području Hrvatske zabilježena sjevernoamerička vrsta Xirogiton victoriensis.
Od ostalih skupina zabilježene su: Catenulida, Gastrotricha, Nematoda, Bivalvia, Hirudinea,
Tardigrada, Crustacea, Hydrachnidia i Chironomidae. Rezultati NMDS i klaster analize
pokazali su razdvajanje epifaune pojedinih vrsta rakova; epifauna alohtonih i autohtonih vrsta
rakova je odvojena, a isto tako postoji razdvajanje epifaune između autohtonih vrsta rakova.
Rezultati statističke analize ukazuju da postoji značajna razlika između epifaune rakova i
faune sedimenta i obraštaja. S obzirom na rezultate, može se zaključiti da je epifauna rakova
specifična te se razlikuje između pojednih bazibionata.

Abstract (english)

The research of epifauna on freshwater crayfish as basibionts was conducted during springsummer
2014. and 2015. Epizoic community was examined from five different crayfish:
three autochtonous species Astacus astacus, Austropotamobius pallipes, A. torrentium and
two introduced, invasive species Pacifastacus leniusculus and Procambarus fallax f.
viriginalis. The aims of this research were: (i) to analyze epizoic community living on
freshwater crayfish, (ii) to compare epifauna living on crayfish with surrounding fauna living
on sediment and periphyton, (iii) to compare epifauna between crayfish species, especially
between autochthonous and allochthonous species. The results of statistical analysis indicated
a significant difference between epifauna and fauna of sediment and periphyton. 44 different
taxa of epifauna was recorded. The most abundant group was Ciliophora with most common
species Vorticella campanula and Epistylis sp. The most diverse group was Rotifera with
most common species Lepadella parasitica and Dicranophorus hauerianus.
Branchiobdellidanas were confiremd as common crayfish epibionts and for the first time nort
american species Xirogiton victoriensis has been recored in Croatia. Catenulida, Gastrotricha,
Nematoda, Bivalvia, Hirudinea, Tardigrada, Crustacea, Hydrachnidia and Chironomidae
were also recorded living on freshwater crayfish. Results of NMDS and Cluster analyses
showed the eparation of epifauna from autochotnous and allochthonous crayfish and also the
separation of epifauna between autochthonous species. Results of statistical analyses showed
significant difference between epifauna and fauna of sediment and periphyton. It can be
concluded that the whole epizoic community composition established on a particular crayfish
is species-specific and can be different between basibiont species.

• Keywords: autohtone i alohtone vrste; bazibionti i epibionti; Ciliophora; Rotifera; Xirogiton victoriensis
• Keywords (english): autochtonous and alochtonous species; epibionts; basibionts; Ciliophora; Rotifera; Xirogiton victoriensis
• Language: croatian
• URN:NBN: urn:nbn:hr:217:272337
• Study programme: Title: Experimental Biology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra eksperimentalne biologije (magistar/magistra eksperimentalne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-05-08 09:09:37