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Izbira granulacije peščenega substrata pri larvah volkcev Euroleon nostras (Geoffroy in Fourcroy) : magistrsko delo = [Preference in sand granulation among antlion larvae Euroleon nostras (Geoffroy in Fourcroy) : master of science thesis]Špernjak, Andreja, 1978-Larve vrste Euroleon nostras in Myrmelon formicarius gradijo v sipkem substratu lijake, v katere se ujame plen. Z volkci tretjega larvalnega stadija smo izvajali laboratorijske poskuse glede ... zaznavanja plena v substratu različnih granulacij. Larve so imele na razpolago štiri različne frakcije peska. Merili smo premer lijakov v različnih granulatih, ugotavljali kompeticijo in kanibalizem med osebki Euroleon nostras ter merili vpliv granulacije na reakcijsko razdaljo volkcev pri zaznavanju plena. S poskusi, pri katerih smo volkce dali v posode s štirimi različnimi granulati, smo ugotovili, da obe vrsti gradita lijake z največjimi premeri v substratu velikosti 0,23-0,54 mm. V poskusih z dvema frakcijama granulata (0,23-0,54 in 0,54-1 mm) smo dali v posode različno število osebkov E. nostras. Več volkcev je naredilo lijak v finejšem granulatu. Število požrtih volkcev je bilo v zelo visoki pozitivni korelaciji (r=0,94) s številom volkcev v poskusni posodi. Večje kot je bilo število vokcev v posodi, manj lijakov so naredili in več volkcev je ostalo tik pod površino substrata. Ne glede na število volkcev v poskusu je bilo največ lijakov izdelanih v finejšem granulatu. Premer največjega lijaka v posodi z enim volkcem je bil 7 cm, medtem ko je znašal premer največjega lijaka v posodi s 24 volkci 5,4 cm. V finejših granulatih so bili lijaki v povprečju globlji kot v bolj grobih. Najgloblji lijak je bil v granulatu do 0,23 mm, njegova globina je bila 2 cm. V granulatu 1-1,54 mm je bila globina najglobljega lijaka 1,6 cm. V finejšem granulatu so volkci zaznali plen v manjši razdalji kot v bolj grobem; v granulatu do 0,23 mm so se volkci na prisotnost plena odzvali do 4,3 cm v najbolj grobem granulatu (1-1,54 mm) pa do 22,1 cm.Type of material - master's thesis ; adult, seriousPublication and manufacture - Maribor : [A. Špernjak], 2005Language - slovenianCOBISS.SI-ID - 14130696
Author
Špernjak, Andreja, 1978-
Other authors
Novak, Tone, 1950- |
Devetak, Dušan
Topics
biologija |
volkci |
Euroleon nostras |
granulacija substrata |
magistrska dela |
biology |
antlion |
Euroleon nostras |
sand granulation
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Library/institution |
City | Acronym | For loan | Other holdings |
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Miklošič Library FPNM, Maribor | Maribor | PEFMB |
reading room 1 cop.
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National and University Library, Ljubljana | Ljubljana | NUK |
reading room 1 cop.
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University of Maribor Library | Maribor | UKM |
reading room 1 cop.
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Špernjak, Andreja, 1978- | 31097 |
Novak, Tone, 1950- | 13133 |
Devetak, Dušan | 03517 |
Source: Personal bibliographies
and: SICRIS
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