Jump to Main Content
PubAg
Main content area
Search
« Previous |
1 - 20 of 33
|
Next »
Search Results
- Author:
- Moga, Cosmin; Hartel, Tibor; Öllerer, Kinga
- Source:
- Biologia 2009 v.64 no.5 pp. 1011-1015
- ISSN:
- 1336-9563
- Subject:
- Anthus; Quercus; adverse effects; biodiversity; canopy; forests; habitat preferences; habitats; landscapes; shrubs; tree and stand measurements; trees; viability; Romania
- Abstract:
- ... Ancient wood-pastures are facing a major decline in several European countries. These habitats are of great importance for biodiversity because of their special semi-natural character that increases landscape variability and connectivity. In this paper we examine the habitat preferences of the tree pipit Anthus trivialis in an ancient oak wood-pasture, the Breite Natural Reserve, central Romania, ...
- DOI:
- 10.2478/s11756-009-0167-7
-
http://dx.doi.org/10.2478/s11756-009-0167-7
- Author:
- Wang, Yiping; Chen, Xuexin; Wu, Hong; He, Junhua
- Source:
- Biologia 2009 v.64 no.5 pp. 942-946
- ISSN:
- 1336-9563
- Subject:
- Braconidae; Bursaphelenchus xylophilus; Monochamus alternatus; forest pests; immatures; parasitoids; rearing; scientific illustration; taxon descriptions; China
- Abstract:
- ... Bracomorpha ninghais sp. n. (Hymenoptera: Braconidae) is described and illustrated based on individuals reared from the immature stages of the pine sawyer Monochamus alternatus (Coleoptera: Cerambycidae) in Zhejiang of China, which is considered a notorious forest pest associated with the main vector of the pine wood nematode Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae) in China. ...
- DOI:
- 10.2478/s11756-009-0166-8
-
http://dx.doi.org/10.2478/s11756-009-0166-8
- Author:
- Barták, Miroslav; Kubík, Štěpán
- Source:
- Biologia 2009 v.64 no.5 pp. 947-950
- ISSN:
- 1336-9563
- Subject:
- Diptera; Trichinella; new species; scientific illustration; taxon descriptions; Czech Republic
- Abstract:
- ... Trichina thaya sp. n. (Diptera: Hybotidae) from the Czech Republic is described and illustrated. Key to European species of the genus Trichina is provided. ...
- DOI:
- 10.2478/s11756-009-0145-0
-
http://dx.doi.org/10.2478/s11756-009-0145-0
- Author:
- Dinç, Muhittin; Duran, Ahmet; Bilgili, Bilgehan
- Source:
- Biologia 2009 v.64 no.5 pp. 898-901
- ISSN:
- 1336-9563
- Subject:
- Abies; Centaurea; biogeography; conservation status; ecology; forests; new subspecies; scientific illustration; taxon descriptions; Turkey (country)
- Abstract:
- ... A new subspecies in sect. Jacea (Mill.) DC., Centaurea cassia Boiss. subsp. dumanii M. Dinç, A. Duran & B. Bilgili subsp. nov., collected by the authors from South Anatolia, is described and illustrated. The new subspecies is restricted to Abies cilicica (Ant. & Kotschy) Carr. subsp. cilicica forest above Göller Yaylası (C6 Adana-Kozan). Diagnostic morphological characters from C. cassia subsp. ca ...
- DOI:
- 10.2478/s11756-009-0172-x
-
http://dx.doi.org/10.2478/s11756-009-0172-x
- Author:
- Latzel, Vít; Dospělová, Lucie; Klimešová, Jitka
- Source:
- Biologia 2009 v.64 no.5 pp. 923-929
- ISSN:
- 1336-9563
- Subject:
- carbon sequestration; shoots; weed control; perennials; longevity; hypocotyls; harrowing; sprouting; meristems; compensatory growth; organic production; annuals; buds; cutting; fruit growing; biomass; Euphorbia peplus; Anagallis arvensis; Kickxia; habitats
- Abstract:
- ... Habitats, disturbed severely at least once a year, are often dominated by annual plants, which avoid disturbance by means of a short life span and massive production of seeds. Contrary to perennials, they lack pools of reserve meristems on and storage carbon in below-ground organs necessary for vegetative regeneration after disturbance. However, some annuals are able to initiate a bud bank on the ...
- DOI:
- 10.2478/s11756-009-0174-8
-
http://dx.doi.org/10.2478/s11756-009-0174-8
- Author:
- Łukasik, Iwona; Goławska, Sylwia; Wójcicka, Agnieszka
- Source:
- Biologia 2009 v.64 no.5 pp. 994-998
- ISSN:
- 1336-9563
- Subject:
- Rhopalosiphum padi; Sitobion avenae; antioxidants; ascorbate peroxidase; caffeic acid; defense mechanisms; larvae; morphs; tissues
- Abstract:
- ... Effects of plant o-dihydroxyphenols on ascorbate (ASA) content and ascorbate peroxidase (APOX) activity in the tissues of the grain aphid Sitobion avenae and the bird cherry-oat aphid Rhopalosiphum padi were studied. Among the aphid morphs, the highest ASA content and APOX activity were noted for larvae and the lowest for wingless apterae. When exposed to o-dihydroxyphenols, aphids of both species ...
- DOI:
- 10.2478/s11756-009-0164-x
-
http://dx.doi.org/10.2478/s11756-009-0164-x
- Author:
- Krištofík, Ján; Mašán, Peter; Šustek, Zbyšek; Karaska, Dušan
- Source:
- Biologia 2009 v.64 no.5 pp. 974-980
- ISSN:
- 1336-9563
- Subject:
- Ceratophyllus; Clanga pomarina; Coleoptera; Pseudoscorpiones; correlation; drying; eagles; fauna; mites; nests; phoresy; predators; tree crown; wind; Slovakia
- Abstract:
- ... In 2001–2007, altogether 57 nests of lesser spotted eagle were collected in the Orava region in northwestern Slovakia and four groups of arthropods were extracted from them. Richest in number of species and individuals were mites (23 species, 17,500 ind.), followed by beetles (12 species, 725 ind.), whereas pseudoscorpions were represented only by Pselaphochernes scorpioides (39 ind.) and fleas by ...
- DOI:
- 10.2478/s11756-009-0148-x
-
http://dx.doi.org/10.2478/s11756-009-0148-x
- Author:
- Labuda, Roman; Kečkéšová, Lucia; Guarro, Josep; Cano, Josep
- Source:
- Biologia 2009 v.64 no.5 pp. 890-892
- ISSN:
- 1336-9563
- Subject:
- Chrysosporium; cycloheximide; dogs; fungi; fur; genes; internal transcribed spacers; phylogeny; rare species; ribosomal RNA; species identification; Austria; Slovakia
- Abstract:
- ... During a mycological investigation of the presence of cycloheximide resistant fungi on a dog fur sample, carried out in Slovakia in December 2007, the rare species Chrysosporium synchronum was encountered. This is the second time that this fungus has been recovered and the first in Europe. The species identification was also confirmed by sequencing the ITS region of the rRNA genes. Description and ...
- DOI:
- 10.2478/s11756-009-0173-9
-
http://dx.doi.org/10.2478/s11756-009-0173-9
- Author:
- Ma, Ke-Xue; Chen, Guang-Wen; Lou, Hao; Fei, Li-Na
- Source:
- Biologia 2009 v.64 no.5 pp. 1018-1024
- ISSN:
- 1336-9563
- Subject:
- amputation; freshwater; complementary DNA; open reading frames; stress response; Dugesia; phylogeny; reverse transcriptase polymerase chain reaction; peptides; amino acid sequences; rapid amplification of cDNA ends; temperature; heat-shock protein 70; introns; starvation
- Abstract:
- ... Heat shock protein 70 (HSP70) is an important member of the heat shock protein family. It plays a key role in the process of protecting cells by facilitating the folding of nascent peptides as well as the cellular stress response. We isolated and sequenced a full-length HSP70 cDNA from planarian Dugesia japonica (designated Djhsp70) using rapid amplification of cDNA ends (RACE). Djhsp70 cDNA is hi ...
- DOI:
- 10.2478/s11756-009-0158-8
-
http://dx.doi.org/10.2478/s11756-009-0158-8
- Author:
- Harvanová, Denisa; Rosocha, Ján; Bakoš, Dušan; Švihla, Róbert; Vaško, Gabriel; Horňák, Slavomír; Ledecký, Valent; Gromošová, Sylvia; Cibur, Peter; Raši, Richard
- Source:
- Biologia 2009 v.64 no.5 pp. 1032-1038
- ISSN:
- 1336-9563
- Subject:
- adverse effects; cartilage; chondrocytes; collagen; hyaluronic acid; in vitro culture; phenotype; rabbits; staining; viability
- Abstract:
- ... Rabbit chondrocytes were cultivated in vitro using the collagen/hyaluronan membrane. The membrane did not show any adverse effects on chondrocyte viability during in vitro cultivation. The inoculated cells grew without any negative changes. According to the histochemical analyses: (i) hematoxylin and eosin; (ii) safranin O; and (iii) rabbit anti-human collagen type II staining, the rabbit chondroc ...
- DOI:
- 10.2478/s11756-009-0171-y
-
http://dx.doi.org/10.2478/s11756-009-0171-y
- Author:
- Schöll, Károly
- Source:
- Biologia 2009 v.64 no.5 pp. 951-958
- ISSN:
- 1336-9563
- Subject:
- Rotifera; floodplains; habitats; national parks; physicochemical properties; rivers; stream channels; surface water; water flow; water temperature; Danube River; Hungary
- Abstract:
- ... Gemenc floodplain lies between river kilometres km 1503 and 1469 of the Danube River; it is a part of the Danube-Dráva National Park in Hungary. The floodplain is one of the largest in Europe with an 18,000 hectares (Natura 2000) area, and various characteristic side arms and backwaters which lie completely in the floodplain. The area needs hydrological revitalization because of the sinking of the ...
- DOI:
- 10.2478/s11756-009-0153-0
-
http://dx.doi.org/10.2478/s11756-009-0153-0
- Author:
- Sekulová, Lucia; Hájek, Michal
- Source:
- Biologia 2009 v.64 no.5 pp. 908-918
- ISSN:
- 1336-9563
- Subject:
- Bryopsida; Festuca; Junco; Vaccinium; cluster analysis; correspondence analysis; data collection; grasslands; lichens; mountains; national parks; non-vascular plants; nutrient availability; phytosociology; plant communities; soil; species diversity; topographic slope; Slovakia
- Abstract:
- ... Changes in composition and structure of alpine and subalpine plant communities in relation to ecological factors were analysed in the Nízke Tatry Mts, Slovakia. Species cover values of vascular and non-vascular plants in each vegetation plot were recorded on the nine-degree scale. A data set of 156 relevés of alpine and subalpine vegetation was sampled recently during one year in the eastern part ...
- DOI:
- 10.2478/s11756-009-0176-6
-
http://dx.doi.org/10.2478/s11756-009-0176-6
- Author:
- Hussain, Mushtaq; Qamarunnissa, Syeda; Raza, Saboohi; Qureshi, Javed; Wajid, Abdul; Rasool, Sheikh
- Source:
- Biologia 2009 v.64 no.5 pp. 852-858
- ISSN:
- 1336-9563
- Subject:
- DNA; Enterococcus faecalis; Escherichia coli; binding sites; crystal structure; energy efficiency; energy transfer; folic acid; genome; models; prokaryotic cells; sequence alignment; solar radiation
- Abstract:
- ... DNA photolyase is perhaps the most ancient and direct arsenal in curing the UV-induced dimers formed in the microbial genome. Out of two cofactors of the enzyme, catalytic and light harvesting, differences in the latter have provided basis for categorizing photolyases of prokaryotes as folate and deazaflavin types. In the present study, the homology modeling of DNA photolyase of Enterococcus faeca ...
- DOI:
- 10.2478/s11756-009-0168-6
-
http://dx.doi.org/10.2478/s11756-009-0168-6
- Author:
- Hafko, Roman; Orecna, Martina; Bacova, Zuzana; Kirchnerova, Jana; Chorvat, Dušan; Strbak, Vladimír
- Source:
- Biologia 2009 v.64 no.5 pp. 1039-1045
- ISSN:
- 1336-9563
- Subject:
- calcium; ethanol; glucose; insulin; insulin secretion; islets of Langerhans; neoplasm cells; signal transduction; urea
- Abstract:
- ... Secretion of insulin could be stimulated by several ways. Comparison of glucose- and swelling-induced mechanisms in pancreatic islets revealed the involvement of a novel signal transduction pathway with specific features of osmotically stimulated peptide hormone release including Ca2+ independence and resistance to noradrenalin (NA) inhibition. Cell swelling can be induced by hypotonicity or small ...
- DOI:
- 10.2478/s11756-009-0149-9
-
http://dx.doi.org/10.2478/s11756-009-0149-9
- Author:
- Tsugama, Daisuke; Liu, Shenkui; Takano, Tetsuo
- Source:
- Biologia 2009 v.64 no.5 pp. 877-880
- ISSN:
- 1336-9563
- Subject:
- NAD (coenzyme); Saccharomyces cerevisiae; adenosine triphosphate; chelating agents; electron transport chain; iron; iron absorption; mitochondria; succinic acid
- Abstract:
- ... Mitochondria are the centers of the cellular iron metabolism. Iron utilization by mitochondria is deeply related to their respiratory chain activity. We isolated mitochondria from Saccharomyces cerevisiae and examined Fe(III) reduction induced by a respiratory substrate (NADH or succinate), using a Fe(II)-specific chelator (bathophenanthroline disulfonate). In the presence of either 50 μM NADH or ...
- DOI:
- 10.2478/s11756-009-0150-3
-
http://dx.doi.org/10.2478/s11756-009-0150-3
- Author:
- Prokop, Pavol; Trnka, Róbert; Trnka, Alfréd
- Source:
- Biologia 2009 v.64 no.5 pp. 1016-1017
- ISSN:
- 1336-9563
- Subject:
- Aythya; birds of prey; breeding; ducklings; females; males; predation
- Abstract:
- ... A growing body of literature suggests that infanticide is common in a variety of animals. However, most reports are concerned with infanticide by males and these evidences are often indirect or questionable. Here we describe the first videotaped non-parental infanticide by a female common pochard (Aythya ferina) which killed one conspecific duckling. Our observation does not suggest that this atta ...
- DOI:
- 10.2478/s11756-009-0162-z
-
http://dx.doi.org/10.2478/s11756-009-0162-z
- Author:
- Kollárová, Karin; Slováková, Ľudmila; Kollerová, Edita; Lišková, Desana
- Source:
- Biologia 2009 v.64 no.5 pp. 919-922
- ISSN:
- 1336-9563
- Subject:
- 2,4-D; auxins; cell walls; epicotyls; galactose; oligosaccharides; peas; peroxidase
- Abstract:
- ... The effect of galactoglucomannan oligosaccharides — GGMOs, GGMOs-r (GGMOs with reduced reducing ends), and GGMOs-g (GGMOs with reduced number of d-galactose units) on peroxidase activity was determined in pea epicotyls. GGMOs didn’t significantly modify the activity of soluble peroxidases. However, cell wall-associated peroxidases activity increased after GGMOs and GGMOs-r treatment, while in the ...
- DOI:
- 10.2478/s11756-009-0159-7
-
http://dx.doi.org/10.2478/s11756-009-0159-7
- Author:
- Apostolidis, Apostolos; Moutou, Katerina; Stamatis, Costas; Mamuris, Zissis
- Source:
- Biologia 2009 v.64 no.5 pp. 1005-1010
- ISSN:
- 1336-9563
- Subject:
- Mullus barbatus; Mullus surmuletus; Pagellus; allozymes; demersal fish; design for environment; founder effect; genetic markers; genetic variation; heterozygosity; marine fish; mitochondrial DNA; random amplified polymorphic DNA technique; restriction fragment length polymorphism; Greece
- Abstract:
- ... In the present work we used three molecular techniques (allozymes, RAPDs and mtDNA RFLPs) in order to study the genetic structure of three commercial marine species (Mullus surmuletus, Mullus barbatus, and Pagellus erythrinus). Each species was sampled from three locations within the Gulf of Pagasitikos, Greece and from two neighbouring locations outside the Gulf (Trikeri and Alonissos). Values of ...
- DOI:
- 10.2478/s11756-009-0161-0
-
http://dx.doi.org/10.2478/s11756-009-0161-0
- Author:
- Roháčová, Magdaléna; Drozd, Pavel
- Source:
- Biologia 2009 v.64 no.5 pp. 981-993
- ISSN:
- 1336-9563
- Subject:
- Nysius senecionis; Orius minutus; Solidago canadensis; habitats; invasive species; species diversity; vegetation; Czech Republic
- Abstract:
- ... During the vegetation periods of 2001–2003 Heteroptera associated with the invasive alien tall goldenrods Solidago canadensis and S. gigantea were studied in seven model habitats in the north-eastern part of the Czech Republic. Heteropterans associated with adjacent growths were also studied in 2002–2003. A set of 3,042 specimens of 127 samples was analyzed with the aim of estimating average speci ...
- DOI:
- 10.2478/s11756-009-0151-2
-
http://dx.doi.org/10.2478/s11756-009-0151-2
- Author:
- Dražina, Tvrtko; Špoljar, Maria
- Source:
- Biologia 2009 v.64 no.5 pp. 969-973
- ISSN:
- 1336-9563
- Subject:
- Diptera; fauna; islands; nests; Gyps; Dermestidae; Formicidae; Aphidoidea; insects; Blattodea; Adriatic Sea; Croatia
- Abstract:
- ... Qualitative, quantitative and trophic structure of insects found in Eurasian griffon vulture nests were analysed. A total of 249 insects belonging to six orders were found in 18 griffon vulture nests, collected in three colonies on the islands Cres and Plavnik (Adriatic Sea). Eudominant orders were beetles (64.26%) and ants (22.49%). Dermestid beetles were present in all examined nests and compris ...
- DOI:
- 10.2478/s11756-009-0147-y
-
http://dx.doi.org/10.2478/s11756-009-0147-y