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  • 1
    In: Journal of Avian Biology, Wiley, Vol. 50, No. 12 ( 2019-12)
    Abstract: Variation in climatic conditions is an important driving force of ecological processes. Populations are under selection to respond to climatic changes with respect to phenology of the annual cycle (e.g. breeding, migration) and life‐history. As teleconnections can reflect climate on a global scale, the responses of terrestrial animals are often investigated in relation to the El Niño‐Southern Oscillation and North Atlantic Oscillation. However, investigation of other teleconnections and local climate is often neglected. In this study, we examined over a 33‐year period the relationships between four teleconnections (El Niño‐Southern Oscillation, North Atlantic Oscillation, Arctic Oscillation, East Atlantic Pattern), local weather parameters (temperature and precipitation) and reproduction in great tits Parus major and blue tits Cyanistes caeruleus in the Carpathian Basin, Hungary. Furthermore, we explored how annual variations in the timing of food availability were correlated with breeding performance. In both species, annual laying date was negatively associated with the Arctic Oscillation. The date of peak abundance of caterpillars was negatively associated with local temperatures in December–January, while laying date was negatively related to January–March temperature. We found that date of peak abundance of caterpillars and laying date of great tits advanced, while in blue tits clutch size decreased over the decades but laying date did not advance. The results suggest that weather conditions during the months that preceded the breeding season, as well as temporally more distant winter conditions, were connected to breeding date. Our results highlight that phenological synchronization to food availability was different between the two tit species, namely it was disrupted in blue tits only. Additionally, the results suggest that in order to find the climatic drivers of the phenological changes of organisms, we should analyze a broader range of global meteorological parameters.
    Type of Medium: Online Resource
    ISSN: 0908-8857 , 1600-048X
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2028018-X
    SSG: 12
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  • 2
    In: Ibis, Wiley, Vol. 161, No. 1 ( 2019-01), p. 27-34
    Abstract: Sexually selected colour traits of bird plumage are widely studied. Although the plumage is replaced only at one or two yearly moults, plumage colour has long been shown to change between moults. Nevertheless, most studies measure colour weeks to months after the courtship period, typically at nestling rearing, and it is unclear whether these measurements yield relevant data concerning the primary process of sexual selection. Here we analyse repeated spectrometric data taken from male Collared Flycatchers during social courtship and nestling rearing. We show that some spectral traits are not correlated between the two measurements and that within‐individual correlation declines significantly with the likely exposure of the plumage area to damage and soiling. There is an overall decline in spectral trait exaggeration during breeding, but trait decline is not closely related to measurement latency, especially not in the damage‐exposed areas. Finally, sexual selection estimates differ depending on whether they are derived from spectra measured during courtship or during nestling rearing. These results suggest that, contrary to current practice, measurements of plumage reflectance should be made during the primary period of sexual signalling. Spectral trait decline during breeding could also be studied as a possible signal for mates and neighbours.
    Type of Medium: Online Resource
    ISSN: 0019-1019 , 1474-919X
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2071870-6
    detail.hit.zdb_id: 2485031-7
    detail.hit.zdb_id: 2807-1
    SSG: 12
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  • 3
    In: Ethology, Wiley, Vol. 126, No. 5 ( 2020-05), p. 540-552
    Abstract: Behaviour shown in a novel environment has important consequences for fitness in many animals. It is widely studied with standard tests by placing the individuals into an unfamiliar experimental area, that is the so‐called open‐field or novel environment test. The biological relevance of traits measured under such artificial conditions is questionable and could be validated by establishing a link with variables that truly reflect exploration in the wild. Our aim in this field study was to characterize behaviours measured in an artificial novel environment (an aviary) and assess the biological relevance of them in the collared flycatcher ( Ficedula albicollis ). Therefore, we measured the repeatability and the association of multiple behavioural traits, as well as their relationship with breeding dispersal (that reflects exploration in the wild). We found evidence for non‐zero repeatability for number of crosses between the quarters, number of hops and perching latency in the aviary, and these repeatabilities were high when assessed at shorter time windows. Additionally, birds with short perching latency in the novel environment were more likely residents and bred closer to their breeding nest box in the previous year, which may suggest that latency to perch is connected to dispersal in the wild. In sum, our results indicate that behaviours assessed in an artificial environment are individual‐specific at least on smaller timescales, and at least, one component of these behaviours is correlated with an ecologically relevant trait.
    Type of Medium: Online Resource
    ISSN: 0179-1613 , 1439-0310
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2020221-0
    SSG: 22
    SSG: 12,22
    SSG: 5,2
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  • 4
    In: Ecology and Evolution, Wiley, Vol. 12, No. 5 ( 2022-05)
    Abstract: Individual animals can react to the changes in their environment by exhibiting behaviors in an individual‐specific way leading to individual differences in phenotypic plasticity. However, the effect of multiple environmental factors on multiple traits is rarely tested. Such a complex approach is necessary to assess the generality of plasticity and to understand how among‐individual differences in the ability to adapt to changing environments evolve. This study examined whether individuals adjust different song traits to varying environmental conditions in the collared flycatcher ( Ficedula albicollis ), a passerine with complex song. We also aimed to reveal among‐individual differences in behavioral responses by testing whether individual differences in plasticity were repeatable. The presence of general plasticity across traits and/or contexts was also tested. To assess plasticity, we documented (1) short‐scale temporal changes in song traits in different social contexts (after exposition to male stimulus, female stimulus or without stimuli), and (2) changes concerning the height from where the bird sang (singing position), used as a proxy of predation risk and acoustic transmission conditions. We found population‐level relationships between singing position and both song length (SL) and complexity, as well as social context‐dependent temporal changes in SL and maximum frequency (MF). We found among‐individual differences in plasticity of SL and MF along both the temporal and positional gradients. These among‐individual differences in plasticity were repeatable. Some of the plastic responses correlated across different song traits and environmental gradients. Overall, our results show that the plasticity of bird song (1) depends on the social context, (2) exists along different environmental gradients, and (3) there is evidence for trade‐offs between the responses of different traits to different environmental variables. Our results highlight the need to consider individual differences and to investigate multiple traits along multiple environmental axes when studying behavioral plasticity.
    Type of Medium: Online Resource
    ISSN: 2045-7758 , 2045-7758
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2635675-2
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  • 5
    In: Ecology and Evolution, Wiley, Vol. 10, No. 12 ( 2020-06), p. 5323-5331
    Abstract: Behavioral innovation is a key process for successful colonization of new habitat types. However, it is costly due to the necessary cognitive and neural demands and typically connected to ecological generalism. Therefore, loss of behavioral innovativeness is predicted following colonization of new, simple, and invariable environments. We tested this prediction by studying foraging innovativeness in the freshwater isopod Asellus aquaticus . We sampled its populations along the route of colonizing a thermokarstic water‐filled cave (simple, stable habitat with only bacterial mats as food) from surface habitats (variable environment, wide variety of food). The studied cave population separated from the surface populations at least 60,000 years ago. Animals were tested both with familiar and novel food types (cave food: bacterial mats; surface food: decaying leaves). Irrespective of food type, cave individuals were more likely to feed than surface individuals. Further, animals from all populations fed longer on leaves than on bacteria, even though leaves were novel for the cave animals. Our results support that cave A. aquaticus did not lose the ability to use the ancestral (surface) food type after adapting to a simple, stable, and highly specialized habitat.
    Type of Medium: Online Resource
    ISSN: 2045-7758 , 2045-7758
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2635675-2
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  • 6
    In: steel research international, Wiley, Vol. 86, No. 7 ( 2015-07), p. 704-715
    Abstract: A laboratory‐scale device was constructed for treating small‐size steel sheet specimens in an analogous manner to the acid pickling production line. This descaling simulator comprises three tanks for hydrochloric acid and another one for rinsing the samples, providing an automated sample transfer with a free selection of all processing parameters such as motion rate, residence time, temperature, etc. A detailed description of the simulator device will be given. Besides the pickling loss which was the primary parameter measured, surface roughness of the samples, Raman spectrum of the surface, and scale thickness were also determined in some cases. Scale‐related pickling loss and overpickling rate were determined for a number of steel qualities. The role of the pickling liquors of each tank was studied, and the descaling efficiency at various acid temperatures was assessed. A statistical analysis was used for estimating the fluctuation in the scale thickness on the hot‐rolled specimens. Results obtained with the descaling simulator were also checked with an optical imaging of the scale and a composition depth profile analysis. The scale thickness obtained from weight loss measurement was in good agreement with the direct scale thickness measurement.
    Type of Medium: Online Resource
    ISSN: 1611-3683 , 1869-344X
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 2148555-0
    SSG: 19,1
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  • 7
    In: Phytotherapy Research, Wiley, Vol. 25, No. 4 ( 2011-04), p. 493-500
    Abstract: A long‐term experimental animal model was developed by our research group for the evaluation of potential chemopreventive effects. The inhibitory effects of agents on carcinogen (7,12‐dimethylbenz[a]anthracene (DMBA) induced molecular epidemiological biomarkers, in this case the expression of key onco/suppressor genes were investigated. The expression pattern of c‐myc , Ha‐ras , Bcl‐2 , K‐ras protooncogene and p53 tumour suppressor gene were studied to elucidate early carcinogenic and potential chemopreventive effects. The consumption of so‐called Claw of Dragon tea (CoD™ tea) containing the bark of Uncaria guianensis , Cat's Claw (Uncaria sp. U. tomentosa ) and Palmer trumpet‐tree (Tabebuia sp. T. avellanedae ) was able to decrease the DMBA‐induced onco/suppressor gene overexpression in a short‐term animal experiment. In a following study CBA/Ca mice were treated with 20 mg/kg bw DMBA intraperitoneally (i.p.) and the expression patterns of onco/suppressor genes were examined at several time intervals. According to the examined gene expression patterns in this long‐term experiment the chemopreventive effect of CoD™ tea consumption could be confirmed. Copyright © 2010 John Wiley & Sons, Ltd.
    Type of Medium: Online Resource
    ISSN: 0951-418X , 1099-1573
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2011
    detail.hit.zdb_id: 1493490-5
    SSG: 15,3
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  • 8
    In: Pediatric Pulmonology, Wiley, Vol. 58, No. 6 ( 2023-06), p. 1703-1710
    Abstract: To analyse the relationship between peak inflating pressure, expired tidal volume, respiratory rate, and inspiratory time of volume‐guaranteed ventilator inflations and pressure‐supported spontaneous breaths during synchronized intermittent positive pressure mode with volume guarantee and pressure support (SIMV‐VG‐PS) in neonates. Methods Ventilator parameters were downloaded every second from 16 babies ventilated with SIMV‐VG‐PS mode using Dräger Babylog VN500 ventilators over 137 days. Transcutaneous carbon dioxide (tcCO 2 ) data were also collected. Data were computationally analysed using Python. The average of each ventilator parameter was determined during each minute separately for ventilator inflations and for spontaneous breaths. These values were compared and their effect on tcCO 2 levels was also analysed. Results The relationship between the peak inflating pressure of the volume guaranteed inflations (PIP VG ) and pressure‐supported spontaneous breaths (PIP PS ) was highly variable. The PIP PS /PIP VG ratio differed significantly from the value (0.66) targeted by clinicians (group median: 0.80, range: 0.50–1.00). PIP PS frequently exceeded PIP VG . When PIP PS /PIP VG was 〉 0.66, the expired tidal volume and the rate of the pressure‐supported spontaneous breaths were also significantly ( p   〈  0.0001) higher, but there was no difference in tcCO 2 levels. The flow‐cycled spontaneous breaths had significantly shorter inspiratory times than ventilator inflations. Conclusions During SIMV‐VG‐PS it is difficult to ensure a pressure support level proportionate to the inflating pressure of ventilator inflations and to achieve the stability of tidal volumes.
    Type of Medium: Online Resource
    ISSN: 8755-6863 , 1099-0496
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1491904-7
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  • 9
    Online Resource
    Online Resource
    Wiley ; 2009
    In:  Rapid Communications in Mass Spectrometry Vol. 23, No. 21 ( 2009-11-15), p. 3372-3376
    In: Rapid Communications in Mass Spectrometry, Wiley, Vol. 23, No. 21 ( 2009-11-15), p. 3372-3376
    Abstract: ATP‐Binding Cassette (ABC) transporters are highly expressed in pharmacological barriers limiting the access of drugs to their targets. Since characterization of a compound as a transporter substrate or inhibitor bears significant consequences in drug development, there is a great need for reliable tools that enable the rapid analysis of the transport susceptibility of drugs. Here we describe a simple but very efficient high‐performance liquid chromatography/mass spectrometry (HPLC/MS) assay for measuring the ABC transporter‐dependent vesicular transport of compounds. In addition, we provide evidence that the requirement for sample preparation can be minimized using desorption electrospray ionization (DESI)‐MS, paving the way for a direct, high‐throughput investigation of drug‐transporter interactions. Copyright © 2009 John Wiley & Sons, Ltd.
    Type of Medium: Online Resource
    ISSN: 0951-4198 , 1097-0231
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2009
    detail.hit.zdb_id: 2002158-6
    detail.hit.zdb_id: 58731-X
    SSG: 11
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  • 10
    Online Resource
    Online Resource
    Wiley ; 2013
    In:  Pacing and Clinical Electrophysiology Vol. 36, No. 8 ( 2013-08), p. 1030-1031
    In: Pacing and Clinical Electrophysiology, Wiley, Vol. 36, No. 8 ( 2013-08), p. 1030-1031
    Type of Medium: Online Resource
    ISSN: 0147-8389 , 1540-8159
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2013
    detail.hit.zdb_id: 2037547-5
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