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Predation of adult large diving beetles Dytiscus marginalis (Linnaeus, 1758), Dytiscus circumcinctus (Ahrens, 1811) and Cybister lateralimarginalis (De Geer, 1774) (Coleoptera: Dytiscidae) on fish fry

100%

Frelik A.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 4

2

Food of adult diving beetles Colymbetes fuscus (Linnaeus, 1758) and C. striatus (Linnaeus, 1758) (Coleoptera: Dytiscidae) in the Zehlau Peatbog and in oxbow lakes and fens (the Biebrza Marshes)

100%

Frelik A.

Polish Journal of Entomology

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2014

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tom 83

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nr 2

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Predation of adult large diving beetles Dytiscus marginalis (Linnaeus, 1758), Dytiscus circumcinctus (Ahrens, 1811) and Cybister lateralimarginalis (De Geer, 1774) (Coleoptera: Dytiscidae) on fish fry

100%

Frelik A.

Oceanological and Hydrobiological Studies

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2014

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tom Vol. 43, No. 4

360--365

EN

The presented study describes the presence of fish fry in the diet of imagines of large Dytiscidae. The study was conducted between March and September in 2012 and 2013. A total of 163 large, aquatic, diving beetles were caught, which represented the following species: Dytiscus marginalis, Dytiscus circumcinctus, Cybister lateralimarginalis. Fish were identified by scales, bones, vertebrae, pharyngeal teeth. Insects were identified by epicrania, mandibles, hooks, limbs, body segments, eyes and wings. Crustaceans were identified by limbs and Oligochaeta by bristles. Seeds and eggs of invertebrates were found whole and intact. Fragments of fish fry were found in the digestive tracts of all three species collected in three studied ponds. The alimentary canals of the studied beetles contained also fragments of insects, detritus, plant tissue, Crustacea, Arachnida, other invertebrates, Oligochaeta, and Gastropoda.

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Are beetles good indicators of insect diversity in freshwater lakes?

32%

Pakulnicka J. , Buczyńska E. , Buczyński P. , Czachorowski S. , Kurzątkowska A. , Lewandowski K. , Stryjecki R. , Frelik A.

Oceanological and Hydrobiological Studies

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2015

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tom Vol. 44, No. 4

487--499

EN

The study verifies the usefulness of aquatic beetles as an indicator of biodiversity of a simple ecological system. Detailed analyses were carried out at the elementary level for the purpose of determining the significance of correlations between the biodiversity of Coleoptera and other groups of aquatic insects in single samples. The relation of selected taxa to selected habitats of the lake Wukśniki (north-eastern Poland) was also investigated. Moreover, the possibility of application of biodiversity surrogates, i.e. higher taxonomic units (genera and orders), in the determination of biodiversity was examined. A significant high correlation was determined between Coleoptera and the total remaining taxa (RR – Remaining Richness) in samples collected in the entire lake. The correlation has the highest value at the species level. The complementarity analysis reveals that the percentage contribution of Coleoptera in the overall biodiversity of the lake is similarly high at the species and genus level, and substantially lower at the family level. In accordance with the hypothesis, aquatic beetles can be used as indicators of the overall biodiversity of insects in the ecosystem of a mesotrophic lake. Biodiversity surrogates, i.e. higher taxonomic units (genera and families), can be applied instead of the species level.

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Are beetles good indicators of insect diversity in freshwater lakes?

32%

Pakulnicka J. , Buczynska E. , Buczynski P. , Czachorowski S. , Kurzatkowska A. , Lewandowski K. , Stryjecki R. , Frelik A.

Oceanological and Hydrobiological Studies

|

2015

|

tom 44

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nr 4