Ekološke značajke vodencvjetova (Ephemeroptera) krškog izvora

master's thesis

• Title (english): Mayfly (Ephemeroptera) ecological traits in a Dinaric karst spring
• Author: Marina Landeka
• Mentor: Ivančica Ternjej (mentor)
• Committee member: Ivančica Ternjej (predsjednik povjerenstva)
• Committee member: Ines Radanović (član povjerenstva)
• Committee member: Iva Juranović Cindrić (član povjerenstva)
• Committee member: Vesna Petrović Peroković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2017-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Zajednica vodencvjetova izvora rijeke Bistrice istraživana je na pet mikrostaništa između rujna 2007. i kolovoza 2008. godine. Zajednica je sastavljena od tri vrste: Baetis alpinus, B. rhodani i Rhithrogena braaschi. Rhithrogena braaschi je po prvi puta zabilježena na području BiH. Sastav i brojnost zajednice se nisu značajno razlikovali između pojedinih mikrostaništa. Sve tri vrste vodencvjetova nalazimo na svim mikrostaništima, ali u različitim brojnostima, najvjerojatnije ovisno o dostupnosti hrane. No, pojedine vrste su pokazale preferenciju prema tipu supstrata i/ili brzini i/ili dubini vode. Rhithrogena braaschi je strugač koji preferira mikrostaništa sa anorganskim supstratom (lital) s umjerenom brzinom vode. Reofilni strugač i sakupljač B. alpinus preferira mikrostanište sa mahovinom i najvećom brzinom vode. Strugač i sakupljač B rhodani naseljava sva mikrostaništa, no zbog zabilježene preferencije za umjerenu brzinu vode, najveći broj jedinki zabilježen je na valuticama. Na istraživanom izvoru došlo je do migracija ličinki vodencvjetova između dostupnih mikrostaništa obzirom na razvojni stadij vjerojatno zbog prehrambenih potreba ličinki i traženja prikladnog zaklona. Baetis alpinus ima bivoltni, B. rhodani polivoltni, a Rh. braaschi univoltni životni ciklus s produljenom emergencijom.

Abstract (english)

Mayfly assemblage of the Bistrica River Spring was studied at five microhabitats in a period from September 2007 to August 2008. The assemblage was composed of three species: Baetis alpinus, B. rhodani and Rhithrogena braaschi. The latter species represents a new record for B&H. Mayfly composition and abundance were similar at all microhabitats as they were inhabited with all three species, but in different abundances, most probably depending on food availability. Individual species showed a preference for substrate type and/or water velocity and/or water depth. Scraper Rh. braaschi preffered microhabitats with inorganic substrate (lithal) and moderate water velocity. Reophilic scraper and gatherer B. alpinus preferred the microhabitat with mosses and highest water velocity. Scraper and gatherer B. rhodani inhabited all microhabitats in the studied spring, but due to its preference for moderate water velocity, the highest number of individuals were recorded on boulders. Migration of the mayfly larvae among available microhabitats was recorded, probably due to larval dietary requests and search for suitable refuge. Baetis alpinus has bivoltine, B. rhodani polivoltine and Rh. braaschi univoltine life cycle with long emergence period.

• Keywords: zajednica vodencvjetova; novi nalaz vrste; krški izvor; mikrostaništa; životni ciklus
• Keywords (english): mayfly assemblage; new species data; karstic spring; microhabitats; life cycle
• Language: croatian
• URN:NBN: urn:nbn:hr:217:687273
• Study programme: Title: Integrated undergraduate and graduate university study of Biology and Chemistry Education; specializations in: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Course: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije biologije i kemije (magistar/magistra edukacije biologije i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2019-09-25
• Created on: 2017-10-20 11:01:11