Abstract:
:Cognitive bias has become a popular way to access non-human animal mood, though inconsistent results have been found. In humans, mood and personality interact to determine cognitive bias, but to date, this has not been investigated in non-human animals. Here, we demonstrate for the first time, to the best of our knowledge, in a non-human animal, the domestic pig (Sus scrofa domesticus), that mood and personality interact, impacting on judgement. Pigs with a more proactive personality were more likely to respond optimistically to unrewarded ambiguous probes (spatially positioned between locations that were previously rewarded and unrewarded) independent of their housing (or enrichment) conditions. However, optimism/pessimism of reactive pigs in this task was affected by their housing conditions, which are likely to have influenced their mood state. Reactive pigs in the less enriched environment were more pessimistic and those in the more enriched environment, more optimistic. These results suggest that judgement in non-human animals is similar to humans, incorporating aspects of stable personality traits and more transient mood states.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Asher L,Friel M,Griffin K,Collins LMdoi
10.1098/rsbl.2016.0402subject
Has Abstractpub_date
2016-11-01 00:00:00issue
11eissn
1744-9561issn
1744-957Xpii
rsbl.2016.0402journal_volume
12pub_type
杂志文章相关文献
Biology Letters文献大全abstract::Collective responses to threats occur throughout the animal kingdom but little is known about the cognitive processes underpinning them. Antipredator mobbing is one such response. Approaching a predator may be highly risky, but the individual risk declines and the likelihood of repelling the predator increases in larg...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2019.0380
更新日期:2019-10-31 00:00:00
abstract::Populations facing novel environments are expected to evolve through the accumulation of adaptive substitutions. The dynamics of adaptation depend on the fitness landscape and possibly on the genetic background on which new mutations arise. Here, we model the dynamics of adaptive evolution at the phenotypic and genoty...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0239
更新日期:2013-02-23 00:00:00
abstract::The harlequin ladybird, Harmonia axyridis, has emerged as a model species for invasion biology, reflecting its remarkable capacity to outcompete native ladybird species when introduced into new habitats. This ability may be associated with its prominent resistance to pathogens and intraguild predation. We recently sho...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2013.0006
更新日期:2013-03-06 00:00:00
abstract::Trophically transmitted parasites often alter their intermediate host's phenotype, thereby predisposing hosts to increased predation. This is generally considered to be a parasite strategy evolved to enhance transmission to the next host. However, the adaptive value of host manipulation is not clear, as it may be asso...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0335
更新日期:2008-12-23 00:00:00
abstract::While there is increasing interest in non-consumptive effects of predators on prey, physiological effects are understudied. While physiological stress responses play a crucial role in preparing escape responses, the increased metabolic rates and shunting of energy away from other body functions, including antioxidant ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2013.0350
更新日期:2013-06-12 00:00:00
abstract::Vegetated habitats contain a variety of fine-scale features that can ameliorate temperate extremes. These buffered microhabitats may be used by species to evade extreme weather and novel climates in the future. Yet, the magnitude and extent of this buffering on a global scale remains unknown. Across all tropical conti...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2014.0819
更新日期:2014-12-01 00:00:00
abstract::Animal locomotion arises from complex interactions among sensory systems, processing of sensory information into patterns of motor output, the musculo-skeletal dynamics that follow motor stimulation, and the interaction of appendages and body parts with the environment. These processes conspire to produce motions and ...
journal_title:Biology letters
pub_type:
doi:10.1098/rsbl.2010.0294
更新日期:2010-06-23 00:00:00
abstract::Adaptive radiations often exhibit high levels of phenotypic replication, a phenomenon that can be explained by selection on standing variation in repeatedly divergent environments or by the influence of ancestral plasticity on selection in divergent environments. Here, we offer the first evidence that plastic loss of ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0647
更新日期:2019-01-31 00:00:00
abstract::Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 and 2000 µatm pCO₂ in order to assess the possible impact of ocean acidification on early development of krill. No significant effects were detected on embryonic development or larval behaviour at 1000 µatm pCO₂; however, at 2000 µat...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0777
更新日期:2011-04-23 00:00:00
abstract::Drug resistance is a long-standing economic, veterinary and human health concern in human and animal populations. Efficacy of prophylactic drug treatments targeting a particular pathogen is often short-lived, as drug-resistant pathogens evolve and reach high frequency in a treated population. Methods to combat drug re...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2015.0783
更新日期:2015-11-01 00:00:00
abstract::There is increasing evidence from non-human animals that males adjust their ejaculate expenditure according to the risk of sperm competition. In this study we show that, after controlling for lifestyle factors known to influence semen quality, human males viewing images depicting sperm competition had a higher percent...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2005.0324
更新日期:2005-09-22 00:00:00
abstract::We modelled the present and future sub-Saharan winter distributions of 64 trans-Saharan migrant passerines to predict the potential impacts of climate change. These predictions used the recent ensemble modelling developments and the latest IPCC climatic simulations to account for possible methodological uncertainties....
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0715
更新日期:2009-04-23 00:00:00
abstract::The ability to perceive the Earth's magnetic field, or magnetoreception, exists in numerous animals. Although the mechanism underlying magnetoreception has not been clearly established in any species, in salmonid fish, it is hypothesized to occur by means of crystals of magnetite associated with nervous tissue such as...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0209
更新日期:2018-06-01 00:00:00
abstract::In contrast to daily rhythms that are common in the presence of the geophysical light-dark cycle, organisms at polar latitudes exhibit many diel activity patterns during natural periods of continuous solar light or darkness (polar day and night, respectively), from 24 h rhythms to arrhythmicity. In Arctic Greenland (7...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2016.0289
更新日期:2016-09-01 00:00:00
abstract::Flight feather moult in small passerines is realized in several ways. Some species moult once after breeding or once on their wintering grounds; others even moult twice. The adaptive significance of this diversity is still largely unknown. We compared the resistance to mechanical fatigue of flight feathers from the ch...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2004.0244
更新日期:2005-03-22 00:00:00
abstract::This study reports the first experimental exploration of possible contagious yawning in monkeys. Twenty-two stumptail macaques (Macaca arctoides) were presented with video clips of either yawns or control mouth movements by conspecifics. At a group level, monkeys yawned significantly more often during and just after t...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2005.0411
更新日期:2006-03-22 00:00:00
abstract::The dynamics of leaf nitrogen (N) and phosphorus (P) have been intensively explored in short-term experiments, but rarely at longer timescales. Here, we investigated leaf N : P stoichiometry over a 27-year interval in an Inner Mongolia grassland by comparing leaf N : P concentration of 2006 with that of 1979. Across 8...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2014.0981
更新日期:2015-01-01 00:00:00
abstract::Darwin devoted much of his working life to the study of plant reproductive systems. He recognized that many of the intricacies of floral morphology had been shaped by natural selection in favour of outcrossing, and he clearly established the deleterious effects of self-fertilization on progeny. Although Darwin hypothe...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2009.0142
更新日期:2009-06-23 00:00:00
abstract::During the last half million years, pulses of gigantism in the anagenetic lineage of land snails of the subgenus Poecilozonites on Bermuda were correlated with glacial periods when lower sea level resulted in an island nearly an order of magnitude larger than at present. During those periods, the island was colonized ...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.0423
更新日期:2010-12-23 00:00:00
abstract::Animal contests often involve the use of repeated signals, which are assumed to advertise stamina, and hence fighting ability. While an individual may be predicted to give up once it has crossed an energetic threshold, costs inflicted by its opponent may also contribute to the giving-up decision. Therefore, physical s...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.1079
更新日期:2011-06-23 00:00:00
abstract::The present erratum is in regards to our article entitled ‘Ancient DNA and the tropics: a rodent's tale’. We were made aware of problems with some of the ancient sequences submitted to GenBank and conducted a systematic review of all the files used in our study. We discovered that, unfortunately, an incorrect file was...
journal_title:Biology letters
pub_type: 已发布勘误
doi:10.1098/rsbl.2015.0111
更新日期:2015-03-01 00:00:00
abstract::Mechanisms leading to variation in diversity over energetic gradients continue to challenge ecologists. Changes in diversity may reflect the environmental capacity to support species' coexistence through increased niche packing or niche space expansion. Current ecological theory predicts that increases in energy may l...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2018.0294
更新日期:2018-09-12 00:00:00
abstract::Since the modern evolutionary synthesis was first proposed early in the twentieth century, attention has focused on assessing the relative contribution of mutation versus natural selection on protein evolution. Here we test a model that yields general quantitative predictions on rates of protein evolution by combining...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2007.0403
更新日期:2007-12-22 00:00:00
abstract::A large number of episodes of forest mortality associated with drought and heat stress have been detected worldwide in recent decades, suggesting that some of the world's forested ecosystems may be already responding to climate change. Here, we summarize a special session titled 'Drought-induced forest decline: causes...
journal_title:Biology letters
pub_type:
doi:10.1098/rsbl.2011.1059
更新日期:2012-10-23 00:00:00
abstract::Increasing numbers of climbers are attempting Mount Everest, the highest mountain on Earth. We compiled interview data and computed the probabilities of summiting and of dying as a function of climber age and gender (2211 climbers, spring season) for the period of 1990-2005. Men and women had similar odds of summiting...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2007.0317
更新日期:2007-10-22 00:00:00
abstract::Terrestrial arthropods, at constant risk from desiccation, are highly sensitive to atmospheric temperature and humidity. A physiological marker of these abiotic conditions could highlight phenotypic adaptations, indicate niche partitioning, and predict responses to climate change for a group representing three-quarter...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2010.1171
更新日期:2011-08-23 00:00:00
abstract::Mosquitoes, which evade contact with long-lasting insecticidal nets and indoor residual sprays, by feeding outdoors or upon animals, are primary malaria vectors in many tropical countries. They can also dominate residual transmission where high coverage of these front-line vector control measures is achieved. Compleme...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0352
更新日期:2012-10-23 00:00:00
abstract::Climate change leads to species range shifts and consequently to changes in diversity. For many systems, increases in diversity capacity have been forecast, with spare capacity to be taken up by a pool of weedy species moved around by humans. Few tests of this hypothesis have been undertaken, and in many temperate sys...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2012.0806
更新日期:2013-02-23 00:00:00
abstract::Prolific polyembryony is reported in few major taxa, but its occurrence has generated theoretical debate on potential conflict between sexual and asexual reproduction. It is, therefore, important to genetically confirm a widely cited inference, based on microscopy, that polyembryony characterizes marine bryozoans of t...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2004.0259
更新日期:2005-06-22 00:00:00
abstract::Nectar concentration is assumed to remain constant during transport by honeybees between flowers and hive. We sampled crop contents of nectar foragers on Aloe greatheadii var. davyana, a major winter bee plant in South Africa. The nectar is dilute (approx. 20% w/w), but the crop contents of bees captured on flowers ar...
journal_title:Biology letters
pub_type: 杂志文章
doi:10.1098/rsbl.2008.0034
更新日期:2008-06-23 00:00:00