master's thesis
NUTRITIVE EFFECT OF BACTERIA FROM GENUS Limnohabitans ONGROWTH OF NATURAL HETEROTROPHIC FLAGELLATE COMMUNITIES

Vesna Grujčić (2013)
Sveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za biologiju
Metadata
TitleUČINAK KVALITETE BAKTERIJSKOG PLIJENA RODA Limnohabitans NA RAST ZAJEDNICA HETEROTROFNIH BIČAŠA
AuthorVesna Grujčić
Mentor(s)Goran Palijan (thesis advisor)
Abstract
Različiti bakterijski sojevi mogu imati različitu nutritivnu vrijednost za heterotrofne bičaše i prema tome moduliraju rast heterotrofnih bičaša i vjerovatno sastav zajednica. Ispitivan je utjecaj nutritivne kvalitete tri bakterijska soja roda Limnohabitans na rast (stopa rasta, dužina lag faze) zajednica heterotrofnih bičaša. Zabilježena je i različita raspodjela volumena heterotrofnih bičaša u različitim vremenskim fazama eksperimenta. Sva tri testirana soja pokazala su se kao značajna za rast zajednica heterotrofnih bičaša no soj T6 (neopisani soj iz roda Limnohabitans) se istaknuo kao najbolji jer pokazuje najkraću lag-fazu i najveću stopu rasta. Podatci o raspodjeli veličina heterotrfonih bičaša pokazali su kako tijekom ranih faza eksperimenta dominiraju bičaši manjeg volumena što se kako je eksperiment odmicao pomicalo prema onima većega volumena, što vjerovatno ukazuje na to da postoji snažan utjecaj specifičnog plijena ili srodnih bakterija na sastav zajednica heterotrofnih bičaša ali nema direktnih dokaza za tu tvrdnju. Rezultati ovoga rada pružaju uvid u saznanja o tome koje bakterijske vrste sudjelu u prijenosu ugljika prema hranidbenom lancu grejzera u određenim vodenim ekosustavima.
KeywordsLimnohabitans flagellate community food quality of bacteria flagellate growth
Parallel title (English)NUTRITIVE EFFECT OF BACTERIA FROM GENUS Limnohabitans ONGROWTH OF NATURAL HETEROTROPHIC FLAGELLATE COMMUNITIES
Committee MembersMelita Mihaljević (committee chairperson)
Goran Palijan (committee member)
Ivna Štolfa Čamagajevac (committee member)
GranterSveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za biologiju
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineNATURAL SCIENCES
Biology
Study programme typeuniversity
Study levelgraduate
Study programmeMaster of Science Graduate University Study Programme in Biology; specializations in: Master of Biology
Study specializationMaster of Biology
Academic title abbreviationmag.biol.
Genremaster's thesis
Language Croatian
Defense date2013-03-28
Parallel abstract (English)
Different bacteria strains can have different value as a food for heterotrophic nanoflagellates (HNF),thus modulating HNF growth and probably community composition. It was examined how a prey food quality, of three bacterial strains from genus Limnohabitans effects on growth of HNF communities(growth rate, lenght of lag phase). There was a different volume distribution of heterotrophic nanoflagellates in different time-course stages of the experiment. All three tested strains demonstrated significant growth of HNF communities, but strain T6 (undescribed strain of genus Limnohabitans) is singeld out as the best because it shows the shortest lag-phase and the biggest growth rate during the experiment. Data on size distribution of HNF showed time-course shift of communities, from smaller flagellates that were dominant during the begining of the experiment, to the bigger ones in the last stages of the experiments.This probably indicates that there is prey-specific effect of bacteria on HNFcommunity composition but without any direct evidence supporting this theory. The results of this work show important insight regarding the question which bacteria strains are active in carbon transfer to the grazer food chain.
Parallel keywords (Croatian)Limnohabitans zajednice heterotrofnih bičaša nutritivna kvaliteta bakterija rastheterotrofnih bičaša
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:181:371172
CommitterVesna Radman Meic