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Remarks on Neuroptera of the North-eastern part of Slovenia (Goričko)
Saška Lipovšek Delakorda, Bojana Mencinger Vračko, 2002, published scientific conference contribution

Abstract: The abundance of spedies of Neuroptera was studied in the traditional cultural landscape of Goričko (NE Slovenia). The insects were collected during 1997-1998 and 1999 at 12 different localities. The green lacewing Chrysoperla carnea sensu lato was the most dominant species in the region. This species was the only one found in cultivated fields in Goričko district
Keywords: zoology, Neuroptera, net-winged insects, Goričko, Slovenia
Published in DKUM: 03.08.2017; Views: 1412; Downloads: 94
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Insectivores and rodents of the Central Dinaric Karts of Yugoslavia
Boris Kryštufek, 1988, original scientific article

Abstract: Twenty-nine species of insectivores and rodents are known to occur in Central Dalmatia, southwestern Bosnia and western Herzegovina: Erinaceus concolor, Sorex minutus, S. araneus, S. alpinus, Neomys fodiens, N. anomalus, Suncus etruscus, Crocidura suaveolens, C. leucodon, Talpa europaea, Clethrionomys glareolus, Dinaromys bogdanovi, Arvicola terrestris, Pitymys subterraneus, P. liechtensteini, Chionomys nivalis, Microtus arvalis, Nannospalax monticola, Apodemus mystacinus, A. flavicollis, A. sylvaticus, Rattus rattus, R. norvegicus, Mus domesticus, M. musculus, Glis glis, Elimys quercinus, Dryomys nitedula, and Muscardinus avellanarius. The distribution in the study area of each of these is discussed and mapped. Available ecological data are compiled and discussed. Zoogeographic relations are discussed. Special attention is paid to small mammal communities from karstic fields.
Keywords: sesalci, žužkojedi, glodalci, zoologija, Jugoslavija, Mammals, Rodents, Insectivores, zoology, Yugoslavia
Published in DKUM: 30.12.2015; Views: 1706; Downloads: 107
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The harvestmen fauna (Arachnida: Opiliones) from the Sub Mediterranean region of Slovenia - II
Tone Novak, 2005, original scientific article

Abstract: In the present paper, further findings of harvestmen in the Sub Mediterranean region of Slovenia are presented, and comments on some actual problems with the species are added. With the exception of the possible discovery of a troglobitic species in the region, all species living there have presumptively been recorded. With the exclusion of Trogulus gr. nepaeformis and T. gr. tricarinatus, where more species are expected, 34 species and one subspecies have been found in the region. About 20 opilionid species are typical of the region; the others occur in the marginal habitats bordering other zoogeographical regions.
Keywords: zoologija, biogeografija, pajkovci, suhe južine, Opiliones, Arachnida, suhe južine, Slovenija, submediteran, zoology, biogeography, Opiliones, arachnids, harvestmen, Slovenia, Sub Mediterranean
Published in DKUM: 10.07.2015; Views: 2006; Downloads: 50
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Notes on spermatophores in Cyphophthalmus duricorius Joseph (Arachnida: Opiliones: Sironidae)
Tone Novak, 2005, short scientific article

Abstract: The spermatophores in the sironid species Cyphophthalmus duricorius duricorius(Joseph, 1868) are presented. They were found in three females in Slovenia. The spermatophores consist of a bulb-like terminal portion, a tubular, and a basal portion, and are very similar to those in C. serbicus (Hadži, 1973).
Keywords: zoologija, biogeografija, pajkovci, Opiliones, Arachnida, Sironidae, spermatofor, Slovenija, zoology, biogeography, Opiliones, arachnids, Sironidae, Slovenia, spermatophore
Published in DKUM: 10.07.2015; Views: 1503; Downloads: 37
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Wormlion Vermileo vermileo (l.) (Diptera: Vermileonidae) in Slovenia and Croatia
Dušan Devetak, 2008, original scientific article

Abstract: The occurrence of the wormlion species Vermileo vermileo (Linneeus, 1758) is confirmed for the Mediterranean region of Slovenia and Croatia. Its predatory larvae were found in substrates consisting of fine sand or powder, where they construct pitfall traps similar to those of antlions. Wormlion larvae were reared in laboratory to study their biology.
Keywords: zoologija, dvokrilci, volkci, črvasti volkec, Vermileo, Slovenija, Hrvaška, zoology, Diptera, wormlions, Vermileo, Slovenia, Croatia
Published in DKUM: 10.07.2015; Views: 1543; Downloads: 30
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Antlion Dendroleon pantherinus (Fabricius, 1787) (Neuroptera: Myrmeleontidae) in Slovenia
Dušan Devetak, Jan Podlesnik, Franc Janžekovič, 2010, original scientific article

Abstract: The distribution of the European antlion species, Dendroleon pantherinus (Fabricius), in Slovenia with some notes on biology is presented.
Keywords: zoologija, volkci, razširjenost, Slovenija, zoology, antlions, distribution, Slovenia
Published in DKUM: 10.07.2015; Views: 1793; Downloads: 21
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Larval morphology of the antlion Myrmecaelurus trigrammus (Pallas, 1771) (Neuroptera, Myrmeleontidae), with notes on larval biology
Dušan Devetak, Vesna Klokočovnik, Saška Lipovšek Delakorda, Elisabeth Bock, Gerd Leitinger, 2013, original scientific article

Abstract: Morphology and behaviour of third instar larvae of the Holomediterranean antlion species Myrmecaelurus trigrammus (Pallas) are described. Larvae are facultative pit-builders, they either ambush their prey at the surface, or dig pitfall traps that prey fall in to. Dark brown spots on dorsal and ventral sides of the head and on dorsal side of the thorax are charac-teristic of the larvae. Eye tubercles are not prominent. Jaws are equipped with long bristles, campaniform sensilla, sensilla coeloconica, and digitiform sensilla. A unique feature is the shape of the tips of all three teeth that is screw-like with a polyhedral surface. The body surface is covered with longitudinally grooved bristles and plumose hairs. On the tip of the antennae and on terminal and subterminal parts of labial palps sensilla basiconica occur. On the 9th abdominal segment there are two bulges, each of them bearing four digging bristles. Non-prominent eye tubercles and numerous mandibular bristles are morphological traits of pit-builders. Most of the behavioural traits are related to pit builders, whereas forward movement, waiting for prey without a pit and frequent changing of ambush location are traits of non-pit builders.
Keywords: zoologija, volkci, morfologija, Neuroptera, zoology, antlions, morphology, Neuroptera
Published in DKUM: 10.07.2015; Views: 1613; Downloads: 99
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Sand as a medium for transmission of vibratory signals of prey in antlions Euroleon nostras (Neuroptera: Myrmeleontidae)
Dušan Devetak, Bojana Mencinger Vračko, Miha Devetak, Marko Marhl, Andreja Špernjak, 2007, original scientific article

Abstract: European pit-building antlions (Euroleon nostras/ Geoffroy in Fourcroy/) detect their prey by sensing the vibrations that prey generate during locomotory activity. The behavioural reactions and some of the physical properties of substrate vibrations in sand are measured to observe signal transmission through the substrate. The frequency range of the signals of four arthropod species (Tenebrio molitor, Pyrrhocoris apterus, Formica sp. and Trachelipus rathkei) is 0.1-4.5 kHz and acceleration values are in the range ▫$400 {mu}m s^{-2} to 1.5 mm s^{-2}$▫. Substrate particle size and the frequency of prey signals both influence the propagation properties of vibratory signals. The damping coefficient at a frequency 300 Hz varies from 0.26 to 2.61 dB ▫$cm^{-1}$▫ and is inversely proportional to the size of the sand particle. The damping coefficient is positively correlated with the frequency of the pulses. Vibrations in finer sand are attenuated more strongly than in coarser sand and, consequently, an antlion detects its prey only at a short distance. The reaction distance is defined as the distance of the prey from the centre of the pit when the antlion begins tossing sand as a reaction to the presence of prey. The mean reaction distance is 3.3 cm in the finest sand (particle size ▫$le 0.23 mm$▫) and 12.3 cm in coarser sand (particle size 1-1.54 mm). The most convenient sands for prey detection are considered to be medium particle-sized sands.
Keywords: biology, zoology, receptors, chordotonal organs, vibrations, vibratory signals, transmission of vibrations, reception of vibrations, electrophysiology, substrate vibration, antlions, Myrmeleontidae, sand, substrate vibration, particle size
Published in DKUM: 07.06.2012; Views: 2421; Downloads: 106
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Application of elemental microanalysis to elucidate the role of spherites in the digestive gland of the helicid snail Chilostoma lefeburiana
Saška Lipovšek Delakorda, Ilse Letofsky-Papst, Tone Novak, Manuela Giovannelli, Ferdinand Hofer, Maria Anna Pabst, 2008, original scientific article

Abstract: In this case study we present an application of different analytical electron microscopic methods in biology, to elucidate their usefulness in such investigations. Using analytical electron microscopy, spherites in the digestive gland cells of the helicid snail Chilostoma lefeburiana were examined at three stages: just before the non-feeding period of over-wintering in November, in the middle of over-wintering in February and at its end in March. A detailed characterization of changes in the elemental composition of the spherites was characterized by a combination of transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDXS), electron energy-loss spectroscopy (EELS) and energy filtering TEM (EFTEM). During over-wintering, the spherites passed the following changes. Before over-wintering in November, they consisted of striking concentric layers of electron-dense and electron-lucent zones, while in February and March they showed clear empty zones between materials of different electron density. In November spherites, C, O, Ca, P, Cl, Fe, Si, Na, K, Mg and S were detected, whereas in February ones C, O, N, Cl, Si and S were found and only C, O, N, Si and Cl were detected in March spherites. It is suggested that the elements missing in February and March were used in different physiological processes during over-wintering, like (1) the maintenance of the appropriate elemental composition of the internal environment, (2) accumulation of non-toxic waste materials that cannot be metabolized and (3) avoiding potential intoxication by contamination with toxic metals.
Keywords: zoology, Chilostoma lefeburiana, snails, digestive gland, over-wintering, spherites, elemental analyses, environmental pollution, chemical structures
Published in DKUM: 07.06.2012; Views: 1759; Downloads: 92
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