Emergence of blackflies (Simuliidae, Diptera) on tufa barriers in the Plitvice lakes national park

Kesić, Marijana (2011) Emergence of blackflies (Simuliidae, Diptera) on tufa barriers in the Plitvice lakes national park. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Blackflies (Diptera, Simuliidae) are blood-sucking insects which have great economic, veterinary and medical importance as they are vectors of the protozoan parasites. A total of 37387 adult Simuliidae were caught during 2007 and 2008 at the Plitvice lakes, Croatia, using pyramid-type emergence traps. Samples were taken monthly on 3 tufa barriers (Barijera Labudovac, Barijera Kozjak – Milanovac and Barijera Novakovića Brod), with 6 traps placed on each barrier. The main goals of this study were to determine the species composition on tufa barriers, their emergence patterns, main ecological factors that have influence on composition and abundance of specimens and differences in abundance on various microhabitats. The blackflies of the Plitvice lakes are represented by 10 species of Simulium genus. The most numbered species in both 2007 and 2008 was Simulium (Eusimulium) angustipes whose emergence patterns have been analysed in detail. The highest number of caught individuals during 2007 had the barrier Kozjak- Milanovac and during 2008 barrier Labudovac which also had the most species in both years. Barrier Novakovića Brod had the highest diversity. Temperature had the most importanat influence on start of emergence. The most abundant species, Simulium (Eusimulium) angustipes and Simulium (Nevermannia) costatum, had shown statistical significant positive correlation between abundance and current water velocity. Also, they preferred all substrates except silt.

Item Type: Thesis (Diploma thesis)
Keywords: blackflies, diversity, emergence, Plitvica lakes, tufa barriers, temperature, microhabitats
Supervisor: Mihaljević, Zlatko
Date: 2011
Number of Pages: 58
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 08 Jul 2014 07:48
Last Modified: 08 Jul 2014 07:48
URI: http://digre.pmf.unizg.hr/id/eprint/2465

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