Naslov
TROFIČKA ULOGA ZAJEDNICE TRČAKA U ŠUMSKOM EKOSUSTAVU: UTVRĐIVANJE PLIJENA KORISTEĆI ANALIZE LANČANE REAKCIJE POLIMERAZOM (PCR)
(TROPHIC ROLE OF CARABID BEETLE ASSEMBLAGES IN FORES T ECOSYSTEM: PREY DETECTION USING PCR ANALYSES)

Autori
Šerić Jelaska, L. ; Brown S.D. ; Symondson, W.O.C.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Jelaska, D. Sven ; Klobučar, I.V.Göran ; Šerić Jelaska, Lucija ; Leljak Levanić, Dunja ; Lukša, Žaklin - Zagreb : Hrvatsko biološko društvo, 2012, 64-65

Skup
11. Hrvatski biološki kongres / 11th Croatian Biological Congress

Mjesto i datum
Šibenik, Hrvatska, 16.09.2012. - 21.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
zajednica trčaka; gujavice; fauna tla; analiza iz probavila
(Carabid beetle community; earthworms; soil food web; gut-content analyses)

Sažetak
Since soil ecosystems have very complex food webs, trophic interactions are not always obvious. High species diversity, different developmental stages, microscopic and cryptic species, can make it difficult, or even impossible, to identify many trophic pathways. Carabid beetles are important predators in soil ecosystems regulating prey abundance. In this study we wanted to detect the prey spectrum of carabid beetle assemblages in different forest ecosystems with different species composition. As earthworms are a dominant component of the diet of many carabid species we tested whether these predators show some preferences among different earthworm species and ecological groups in the field. PCR analyses of carabid gut content were used to identify prey. Carabids were collected from the soil in 5 forest sites in Croatia (n=2) and Wales (n=3), UK, and 320 individual carabids were dissected and used for gut content analyses. Extensive screening using various group- and species-specific primers revealed that 73% of carabids were positive for earthworms, 31% for slugs, 24% for lepidopteras, 11% for woodlice, and 5% for springtails. Croatian and Wales’s populations were compared, as well. There was no evidence of predation preference for epigeic earthworms in comparison with endogeic and the deep-living species. We concluded that carabid communities have a stable role in controlling certain prey groups.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Biologija

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