20.500.12556/DKUM-88107 Analiza geometrije lijakastih pasti v pesku Analysis of geometry of pitfall traps in sand Volkci lijakarji so žuželke, katerih ličinke v pesku gradijo pasti v obliki lijaka za lov plena. Naklon lijaka in sipanje peska proti dnu lijaka plenu otežujeta pobeg, zato je oblika lijaka ključnega pomena za uspeh pri lovu. Različne vrste volkcev lijakarjev lahko gradijo različno oblikovane pasti. V raziskavi Devetak in sodelavci (2020) smo proučevali povezavo med geometrijo pasti in lastnostmi peščenega substrata. Pasti smo 3D skenirali z laserskim čitalnikom in izdelali 3D modele pasti, ki smo jih uporabili za opis oblike z meritvami kotov in za analizo variabilnosti pasti z metodami geometrijske morfometrije. Ugotovili smo, da substrat z manjšo granulacijo ali večjim deležem finega peska omogoča gradnjo kompleksnejših pasti s strmejšimi stenami, saj ima višji maksimalni kot stabilnosti. Oblika pasti je torej odvisna od strukture substrata in v heterogenem habitatu omogoča sobivanje različnih vrst volkcev z različnimi preferencami glede substrata. Pit-building antlions are insects whose larvae catch prey by constructing pitfall traps in the sand. The slope of the trap and sand avalanches impede the escape of the prey, therefore, the shape of trap is crucial for hunting success. Different species of pit-building antlions can build differently shaped traps. In the study by Devetak et al. (2020), we analysed the connection between the trap geometry and the properties of the sand substrate. We scanned the traps in 3D with a laser scanner and created 3D models of the traps, which we used to describe the shape with angle measurements and to analyse the trap variability using the geometric morphometry methods. We found that a substrate with smaller granulation or a larger proportion of fine sand enables the construction of more complex traps with steeper walls, as it has a higher maximum angle of stability. The shape of the trap therefore depends on the structure of the substrate and in a heterogeneous habitat enables the coexistence of different antlion species with different substrate preferences. geometrijska morfometrija analiza oblike ličinke volkcev granulacija peska geometric morphometrics shape analysis antlion larvae sand granulation true true false Univerza v Mariboru, Univerzitetna založba Slovenski jezik Angleški jezik Članek v reviji 2024-04-10 03:43:19 2024-04-15 13:21:18 2024-04-16 03:53:24 0000-00-00 00:00:00 2023 0 0 Str. 69-75 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-03-16 595.741.2 145390595 148509443 10.18690/um.feri.4.2023.7 https://press.um.si/index.php/ump/catalog/book/769 1 4eeffb9e-fb1a-11ee-8f8b-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=178566 RAZ_Klenovsek_Tina_2023.pdf RAZ_Klenovsek_Tina_2023.pdf 1 25FE2342E73A6DFBE227D76176EB0366 c81ba1acde47e39cb5ba1d29c037f48cf57e58c51dd5095bf142dd7b092942c6 0668054e-fb1b-11ee-8f8b-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=178567 Fakulteta za naravoslovje in matematiko 0 0 0