CCL

Összesen 16 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM022845
Első szerző:Barta Zoltán (biológus, zoológus)
Cím:The effects of predation risk on the use of social foraging tactics / Zoltán Barta, András Liker, Ferenc Mónus
Dátum:2004
Megjegyzések:The effects of predation on the use of social foraging tactics, such as producing and scrounging, are poorly known in animals. On the one hand, recent theoretical models predict increased use of scrounging with increasing predation risk, when scroungers seeking feeding opportunities also have a higher chance of detecting predators. On the other hand, there may be no relation between tactic use and predation when antipredator vigilance is not compatible with scanning flockmates. We investigated experimentally the effects of predation risk on social foraging tactic use in tree sparrows, Passer montanus. We manipulated predation risk in the field by changing the distance between shelter and a feeder. Birds visited the feeder in smaller flocks, spent less time on it and were somewhat more vigilant far from shelter than close to it. Increased predation risk strongly affected the social foraging tactic used: birds used the scrounger tactic 30% more often far from cover than close to it. Between-flock variability in scrounging frequency was not related to the average vigilance level of the flock members, and within-flock variability in the use of scrounging was negatively related to the vigilance of birds. Our results suggest that in tree sparrows, the increased frequency of scrounging during high predation risk cannot simply be explained by an additional advantage of increasing antipredator vigilance. We propose alternative mechanisms (e.g. increased stochasticity in food supply, and that riskier places are used by individuals with lower reserves) that may explain increased scrounging when animals forage under high predation risk
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Animal Behaviour. - 67 : 2 (2004), p. 301-308. -
További szerzők:Liker András Mónus Ferenc
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM121144
035-os BibID:(Scopus)85192864723 (WoS)001242233500001
Első szerző:Brassó Dóra Lili (állattenyésztő mérnök)
Cím:Behaviour frequencies, spatial distribution and social network of Grimaud geese during the laying season / Lili Dóra Brassó, István Komlósi, Zoltán Barta
Dátum:2024
ISSN:0168-1591
Megjegyzések:Most domestic goose breeds were domesticated from the Greylag goose. Even though domestication resulted in a change in the production and behaviour of birds compared to their ancestors, geese are relatively recently domesticated and less intensively selected for production compared to other species (i.e. chickens or dairy cattle). In this respect, we hypothesised that the territorial defence of ganders would be present during the laying season similar to the wild ones. The behaviour of birds was expected to differ by sex, the month of the laying season and the time of the day. We assumed that the hierarchy within a group would be affected by the influence of other groups. Altogether 150 birds in three fifty-bird groups were examined over five observation events indicating the onset (December), the peak (the start, the middle and the end of January) and the end (the end of February) of the laying season. Twenty behaviour elements classified into five categories (locomotion, static behaviours, feed intake, comfort behaviours and social behaviours) were examined regarding the three groups as replicates. The territorial defence of ganders was evaluated by spatial distribution analysis, and the relations within groups were investigated by social network analysis. Between sexes, only the frequency of social behaviours presented differences. Ganders showed social behaviour more frequently than geese (10.89% vs 1.49%, P= 0.000). The frequency of Journal Pre-proof static behaviours was the lowest at the onset of January and the highest in February (21.18% vs 38.03%, P= 0.000). The frequency of feed intake was the highest in December and the lowest in February (18.33% vs 4.83%, P= 0.000). Comfort behaviours showed the lowest frequency in December and the highest at the onset of January (36.65% vs 57.63%, P= 0.000). The social behaviours were unchanged in December and January but decreased in February (4.40-6.37% vs 1.16%, P=0.000). Only the frequency of social behaviours differed by the time of the day, indicating the highest frequency in the morning (55.60%, P=0.003). The results of the spatial distribution analysis did not strongly support the presence of territorial defence of ganders. The structure within a group was the most explicit in Group 1 having an adjacent large group and another small group by which it was likely to be influenced. It might be concluded that domestic geese ganders did not keep their territory-holding ability to a full extent during domestication and the behaviour (mainly social interactions) of domestic geese is influenced by sex, the month of the laying season and the time of the day. The structure within a group was somewhat influenced by the adjacent groups
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Applied Animal Behaviour Science. - 275 (2024), p. 1-27. -
További szerzők:Komlósi István (1960-) (agrármérnök) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:EFOP-3.6.3-VEKOP-16-2017-00008
EFOP
ÚNKP-20-3-I-DE-372
Egyéb
TKP2021-NKTA-32
Egyéb
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

3.

001-es BibID:BIBFORM107993
035-os BibID:(WoS)000382245200001 (Scopus)84982102933
Első szerző:Dakin, Roslyn
Cím:Weather matters: begging calls are temperatureand size-dependent signals of offspring state / Dakin, Roslyn, Ouyang, Jenny Q., Lendvai, Ádám Z., Haussmann, Mark F., Moore, Ignacio T., Bonier, Frances
Dátum:2016
ISSN:0005-7959 1568-539X
Megjegyzések:Begging calls provide a way for parents to gauge offspring state. Although temperature is known to affect call production, previous studies have not examined the influence of ambient temperature at the nest. We recorded ambient temperature and begging calls of 3 day-old tree swallows (Tachycineta bicolor). Our results indicate that typical daily temperature flux can dramatically alter a brood`s begging calls, depending on body size. Broods with small (low body mass) nestlings decreased the rate and length of their calls at colder temperatures, consistent with a biophysical constraint. In contrast, broods with large (high body mass) nestlings increased the rate of their calls at colder temperatures. Parents responded in a context-dependent manner, returning more rapidly after smaller nestlings gave longer begging calls. Our results suggest that the function of offspring begging calls is highly dynamic, with environmental conditions altering the relationship between begging calls and offspring state.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
communication
solicitation
parent-offspring conflict
environment
honest signal
tree swallow
Megjelenés:Behaviour. - 153 : 8 (2016), p. 871-896. -
További szerzők:Ouyang, Jenny Q. Lendvai Ádám Zoltán (1977-) (biológus) Haussmann, Mark F. Moore, Ignacio T. Bonier, Fraces
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

4.

001-es BibID:BIBFORM081273
Első szerző:Gerencsér Linda
Cím:The effect of reward-handler dissociation on dogs' obedience performance in different conditions / Linda Gerencsér, András Kosztolányi, Joni Delanoeije, Ádám Miklósi
Dátum:2016
ISSN:0168-1591
Megjegyzések:Dogs' responsiveness to instructions of the handler is known to be influenced by several factors. In this study we examined whether reward-handler dissociation has an effect on the obedience performance of family dogs with basic training history. We looked at situations involving human-dog interactions under controlled laboratory settings by measuring dogs' obedience performance to two known commands (?sit' and ?down') in several different conditions. For two different groups of dogs, we manipulated the source of the food reward: it was provided either by the handler or by a remote controlled food dispenser device during a practising period, when the handler stood in the dog's close vicinity (0.5 m). In three different test conditions the position of the handler was manipulated: he/she stood further away (3 m) from the dog either beside a screen, hid behind the screen or was outside of the room. No food reward was provided during the test trials, which were interrupted by so called reminder sessions, where dog-handler dyads practiced both commands in close vicinity to each other and food reward was also involved. We found that the performance of dogs that experienced receiving food reward from the handler was significantly poorer during the test conditions, i.e. in contexts with increased distance between them and the handler (including handler out of sight), as compared to their performance during the reminder sessions in the handlers' close vicinity. Experience with receiving food reward form the dispenser device lessened the difference in dogs' obedience between the test conditions and reminder sessions, and moreover, it also revealed a more prompt response to the ?sit' than to the ?down' commands. Thus our results show that reward-handler dissociation seems to affect dogs' obedience performance in the investigated conditions.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Behaviour
Obedience
Dog
Food reward
Training
Megjelenés:Applied Animal Behaviour Science. - 174 (2016), p. 103-110. -
További szerzők:Kosztolányi András (1971-) (biológus) Delanoeije, Joni Miklósi Ádám
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

5.

001-es BibID:BIBFORM035617
Első szerző:Gyuris Enikő
Cím:Personality traits across ontogeny in firebugs, Pyrrhocoris apterus / Gyuris Enikő, Feró Orsolya, Barta Zoltán
Dátum:2012
ISSN:0003-3472
Megjegyzések:Consistent behavioural differences have long been recognized in animals but it still remains unclear how these traits change over ontogeny. As individuals can face different situations over their lives, and their life history expectation may not be the same in different life stages, one can expect that using different strategies in different life stages would be adventageous. Characteristics of animal personality across ontogeny could be measured at group and individual levels. Since personality alteration across time can be studied from various aspects one should use the following indexes: mean-level, differential, structural and individual consistency. We investigated whether common firebugs behave in the same way throug a major life stage transition, namely final ecdysis. We measured activity, boldness and exploration twice in the larval stage and also twice when bugs reached the adult stage. We found that the relative value of behavioural traits was stable across ontogeny and the correlation structure among behavioural traits remained constant over time. Nevertheless, larvae differed from adults in general in that they were bolder, explored their environment more thoroughly and seemed to be more active before final ecdysis. These results indicate that personality could change differently across major life stage transitions; therefore this importand factor needs to be considered in further research.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
animal personality
ecdysis
firebug
larval-adult transition
life history
ontogeny
Pyrrhocoris apterus
sexual maturation
Egészség- és Környezettudomány
Megjelenés:Animal Behaviour. - 84 : 1 (2012), p. 103-109. -
További szerzők:Feró Orsolya Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
Viselkedésökológiai Kutatócsoport
TÁMOP-4.2.2/B-10/-1-2010-0024
TÁMOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

6.

001-es BibID:BIBFORM021571
Első szerző:Lendvai Ádám Zoltán (biológus)
Cím:The effects of energy reserves and dominance on the use of social-foraging strategies in the house sparrow / Ádám Z. Lendvai, András Liker, Zoltán Barta
Dátum:2006
Megjegyzések:In social animals, dominance rank often influences individuals' behaviour, but in most cases it is unknown how dominance modulates the effects of other phenotypic traits. We investigated the mutual effects of social dominance and the level of energy reserves on the use of social-foraging strategies in captive flocks of house sparrows, Passer domesticus.We used experimental wind exposure to manipulate overnight energy expenditure of dominant and subordinate individuals. In response to the experimental treatment dominants used scrounging (exploiting others' food finding) significantly more, whereas for subordinates there was only a moderate and nonsignificant increase in scrounging. Individual variability in the frequency of scrounging was higher in subordinates than in dominants and this difference between the dominance groups was unaffected by the treatment. These results suggest that individuals of different dominance status adopt different strategies: to cope with an energetically challenging situation, dominants behave rather uniformly by increasing further their preference for scrounging, whereas subordinates do not alter their tactic, but may rely on using scrounging opportunistically.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Animal behaviour. - 72 : 4 (2006), p. 747-752. -
További szerzők:Liker András Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

7.

001-es BibID:BIBFORM022983
Első szerző:Liker András
Cím:The Effects of Dominance on Social Foraging Tactic Use in House Sparrows / András Liker, Zoltán Barta
Dátum:2002
Megjegyzések:We investigated whether social foraging tactic use (producing and scrounging) in birds is affected by the dominance rank of individuals as predicted by a phenotype limited producerscrounger game. In a captive ? ock of house sparrows, we observed the behaviour of the birds when they were foraging on a grid containing clumps of seeds. We measured the ? ghting success of the birds, determined the method by which they found food clumps (? nding or joining), and measured their feeding rate. Joining were frequently observed and usually involved aggressive interactions. Most birds used both ? nding and joining to obtain food. We found that foraging method was related to dominance: the frequency of joining gradually increased with increasing dominance rank, as predicted by the phenotype limited model for ? ocks where there are moderate competitive asymmetries among the birds. Food intake rate of individuals was not related to either their dominance rank or foraging method. Similar weak relationships were predicted by the model among these variables for ? ocks with moderate competitive asymmetries. Behavioural variability among sparrows in locomotion frequency and vigilance was not related to their foraging method, but the rate of investigating potential food caches strongly decreased with increasing frequency of joining. We conclude that the phenotype limited model successfully predicts the relationship between dominance and joining frequency in house sparrows feeding on concentrated food sources, and we suggest that the distribution of food used in tests of the model may crucially affect their results
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Behaviour. - 139 : 8 (2002), p. 1061-1076. -
További szerzők:Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
Borító:

8.

001-es BibID:BIBFORM124348
035-os BibID:(WoS)001297854700001 (Scopus)85199278842
Első szerző:McDonald, Grant C.
Cím:Sex roles in parental care in a species with precocial offspring and frequent brood desertion / Grant C. Mc Donald, Zoltan Barta, Barbara A. Caspers, Tamás Székely, András Kosztolányi
Dátum:2024
ISSN:0003-3472
Megjegyzések:Biparental care can be favoured when offspring care by both parents provides a stronger fitness incentive to parents than deserting their offspring. In species with precocial offspring, the burden of care is expected to be comparatively low, facilitating desertion by one parent and uniparental care by the abandoned partner. However, care patterns can vary widely between and within precocial species, with some parents deserting their offspring, while other families remain biparental. Understanding the details of the care delivered by males and females in families before desertion is important to provide insight into the mechanisms that influence the stability of biparental care. Here we used detailed behavioural observations from the brood care period to investigate the balance of care between male and female parents in a well-studied precocial shorebird, the Kentish plover, Charadrius alexandrinus, both within families where females subsequently deserted and within families that remained biparental until the offspring were independent. We found that both males and females expressed all care behaviours (brooding, vigilance and brood defence) characteristic of precocial species, and we utilized quantitative mutual entropy analyses to show that the division of parental labour (i.e. care task specialization) was unrelated to the maintenance of biparental care. We also found that while males and females provided broadly similar levels of care, there were subtle differences: females typically delivered slightly more care than males across offspring development, suggesting that sex differences in self-maintenance may underlie sex differences in care. Together our results indicate minor differences in the care patterns of males and females, consistent with theoretical predictions that the division of labour should be limited in populations with frequent desertion and uniparental care.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
brood desertion
division of labour
family dynamics
parental care
sex role
specialization
Megjelenés:Animal Behaviour. - 215 (2024), p. 211-225. -
További szerzők:Barta Zoltán (1967-) (biológus, zoológus) Caspers, Barbara A. Székely Tamás (1959-) (biológus) Kosztolányi András (1971-) (biológus)
Pályázati támogatás:FK 134741
NKFIH
NN125642
Egyéb
ANN 143995
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

9.

001-es BibID:BIBFORM019035
Első szerző:Mónus Ferenc
Cím:Degree of synchronization of tree sparrows in flocks under different predation risk / Ferenc Mónus, Zoltán Barta
Dátum:2011
ISSN:0005-7959
Megjegyzések:When exposed to predators animals often benefit from synchronized movements and behaviour. In this study, we investigated the level of synchronization at arrivals at and departures from a feeding platform in flock-feeding tree sparrows (Passer montanus) under two different conditions; near to a protective cover or far from it. Sparrow flocks spent 43% less time in a feeding bout, and waited 30% more between bouts, far from the cover than near to it. The relationship of vigilance and flock size was different between the two conditions; the proportion of time allocated to vigilance increased more with decreasing flock size when far from the cover than when near to it. These results suggest that sparrows perceived higher predation risk when fed farther away from the protective cover. Furthermore, we found that far from the cover arrivals of sparrows were 79% more synchronized than when close to the cover. Finally, we did not find significant difference between the two feeding conditions in the synchronization at the departure. Possibly, due to its escape function, departures may be as synchronized as possible, even when feeding near to the protective cover
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
synchronized behaviour
predation risk
foraging
tree sparrow
Megjelenés:Behaviour. - 148 : 5-6 (2011), p. 733-744. -
További szerzők:Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

10.

001-es BibID:BIBFORM022984
Első szerző:Moskát Csaba
Cím:Adaptations by Great Reed Warblers to Brood Parasitism : A Comparison of Populations in Sympatry and Allopatry with the Common Cuckoo / C. Moskát, J. Szentpéteri, Z. Barta
Dátum:2002
Megjegyzések:population, but not in the Greek population. Spottedness of eggs were similar in both populations. Generally, a tendency for a higher interclutch variation was found in Hungary. Intraclutch variation was more similar in the two populations, but for the colour variables it showed a lower value in Hungary than in Greece. The heavy cuckoo parasitism in Hungary is suggested to be the main cause for the increased interclutch variation in relation to intraclutch variation in egg appearance among great reed warbler clutches. The high interclutch variation reduces the chance that the parasite egg's appearance matches that of the hosts', which facilitates hosts' egg discrimination.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
brood parasitism
adaptation
egg rejection
interclutch variation
Cuculus canorus
Acrocephalus arundinaceus.
Megjelenés:Behaviour. - 139 : 10 (2002), p. 1313-1329. -
További szerzők:Szentpéteri J. Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
Borító:

11.

001-es BibID:BIBFORM028108
Első szerző:Moskát Csaba
Cím:Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of the brood parasite / Csaba Moskát, Márk E. Hauber, 1, Jesús M. Avilés, Miklós Bán, Rita Hargitaie, Marcel Honza
Dátum:2009
ISSN:0003-3472
Megjegyzések:In birds, multiple parasitism is the laying of two or more eggs by one or more parasitic females in a single host nest. Several cognitive mechanisms may explain how multiple parasitism could affect parasite egg discrimination by hosts. Rejection based on discordance predicts that multiple parasitism provides a perceptually more error-prone way for hosts to reject parasitism because more foreign eggs decrease the chance that any one egg is perceived as most dissimilar and recognized as foreign, unless parasite eggs are all similarly highly nonmimetic. In contrast, rejection based on clutch uniformity predicts that in multiple parasitism egg rejection is more error-proof if mimicry by parasite eggs is variable, because increased variation in egg appearance makes for easier egg rejection for hosts. Finally, true egg recog- nition, that is, rejection based on memory of the host's own eggs, predicts no differences in rejection rates from nests with single or multiple parasitism. We studied common cuckoos, Cuculus canorus, parasitizing a population of great reed warblers, Acrocephalus arundinaceus, in Hungary where multiple parasitism was frequent. Hosts rejected parasite eggs less often in nests with multiple parasitism than in nests with single parasitism. These observations were confirmed by experimental parasitism and support the rejection based on discordance hypothesis. As hosts were more likely to tolerate cuckoo eggs in nests with multiple parasitism, we found that multiple parasitism more than doubled cuckoos' reproductive output per host nest compared to single parasitism.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Animal Behaviour. - 77 : 5 (2009), p. 1281-1290. -
További szerzők:Hauber, Mark E. Avilés, Jesús M. Bán Miklós (1975-) (biológus) Hargitai Rita Honza Marcel
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

12.

001-es BibID:BIBFORM081268
Első szerző:Orci Kirill Márk
Cím:Instantaneous song modification in response to fluctuating traffic noise in the tree cricket Oecanthus pellucens / Kirill Márk Orci, Krisztina Petróczki, Zoltán Barta
Dátum:2016
ISSN:0003-3472
Megjegyzések:Noise pollution is a world-wide phenomenon and its effects on animal behaviour have been investigated by numerous studies focusing mostly on vertebrate taxa. However, studying how insects are impacted by human-made noise is indispensable, because of their ecological importance and in order to gain a more comprehensive knowledge of how animals can cope with this new challenge. The few studies that have examined the effects of noise pollution on the acoustic signalling of insects have characterized noise over long timescales. In this study we examined whether males of the tree cricket Oecanthus pellucens modify their calling song in response to the fluctuation in traffic noise over a short timescale. To examine this question we carried out (1) noise level measurements over a short time window (200 ms) paired with song parameter measurements on sound recordings of males singing in their noise-polluted habitats and (2) laboratory playback experiments in which each singing male was recorded during a silent control period and during noise playback. Our results show that males shortened their calls (echemes) and paused singing with a higher probability with increasing noise level. However, males did not modify the fundamental frequency of their song and did not adjust the duration of the interecheme interval in response to noise. These results suggest that crickets decrease signalling effort during high levels of noise and, at least for the song parameters we examined, do not modify their signals, as do birds and frogs, to reduce masking by anthropogenic noise.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
acoustic signalling
anthropogenic noise
behavioural plasticity
tree cricket
urbanization
Megjelenés:Animal Behaviour. - 112 (2016), p. 187-194. -
További szerzők:Petróczki Krisztina Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:SROP4.2.2.B-15/1/KONV-2015-0001
Egyéb
OTKA K81929
OTKA
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1 2 
Corvina könyvtári katalógus v10.11.18-SNAPSHOT © 2024 Monguz kft. Minden jog fenntartva.