1,983 results match your criteria Animal Behaviour[Journal]

Friend virus severity is associated with male mouse social status and environmental temperature.

Anim Behav 2022 May 11;187:221-231. Epub 2022 Apr 11.

School of Biological Sciences, University of Utah, Salt Lake City, UT, U.S.A.

Pathogen virulence is highly variable within populations, and although many factors contributing to virulence differences are known, there is still much variation left unexplained. Identifying and characterizing environmental conditions associated with different virulence levels is therefore an important undertaking in infectious disease research. One factor considered to be a major determinant of overall health and susceptibility to disease in social animals is social status. Read More

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Genetic ancestry predicts male-female affiliation in a natural baboon hybrid zone.

Anim Behav 2021 Oct 26;180:249-268. Epub 2021 Aug 26.

Department of Evolutionary Anthropology, Duke University, Durham, NC, U.S.A.

Opposite-sex social relationships are important predictors of fitness in many animals, including several group-living mammals. Consequently, understanding sources of variance in the tendency to form opposite-sex relationships is important for understanding social evolution. Genetic contributions are of particular interest due to their importance in long-term evolutionary change, but little is known about genetic effects on male-female relationships in social mammals, especially outside of the mating context. Read More

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October 2021

The interplay between sperm-mediated and care-mediated paternal effects in threespine sticklebacks.

Anim Behav 2021 Sep 12;179:267-277. Epub 2021 Aug 12.

Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, U.S.A.

The environment experienced by one generation can influence the phenotypes of future generations. Because parental cues can be conveyed to offspring at multiple points in time, ranging from fertilization to posthatching/parturition, offspring can potentially receive multiple cues from their parents via different mechanisms. We have relatively little information regarding how different mechanisms operate in isolation and in tandem, but it is possible, for example, that offspring phenotypes induced by nongenetic changes to gametes may be amplified by, mitigated by, or depend upon parental care. Read More

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September 2021

Erratum to "Bonobos and chimpanzees preferentially attend to familiar members of the dominant sex" [ 177 (2021) 193-206].

Anim Behav 2021 Jul;177:303

School of Psychology & Neuroscience, University of St Andrews, St Andrews, U.K.

[This corrects the article DOI: 10.1016/j.anbehav. Read More

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'Hangry' : food deprivation increases male aggression.

Anim Behav 2021 Jul;177:183-190

Department of Zoology, University of Oxford, U.K.

Aggressive interactions are costly, such that individuals should display modified aggression in response to environmental stress. Many organisms experience frequent periods of food deprivation, which can influence an individual's capacity and motivation to engage in aggression. However, because food deprivation can simultaneously decrease an individual's resource-holding potential and increase its valuation of food resources, its net impact on aggression is unclear. Read More

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Female signal jamming in a socially monogamous brood parasite.

Anim Behav 2021 Feb 29;172:155-169. Epub 2020 Dec 29.

Department of Biology, University of Pennsylvania, Philadelphia, PA, U.S.A.

Acoustic signalling is vital to courtship in many animals, yet the role of female vocalizations is understudied. Here, we combine observational and experimental methods to assess the courtship function of the female chatter call in brown-headed cowbirds, . While the chatter call is likely multifunctional, it is frequently used in social interactions and overlapping duets with males during the breeding season. Read More

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February 2021

Urban birdsongs: higher minimum song frequency of an urban colonist persists in a common garden experiment.

Anim Behav 2020 Dec 2;170:33-41. Epub 2020 Nov 2.

Department of Biology, Indiana University, Bloomington, IN, U.S.A.

Environmental changes caused by urbanization and noise pollution can have profound effects on acoustic communication. Many organisms use higher sound frequencies in urban environments with low-frequency noise, but the developmental and evolutionary mechanisms underlying these shifts are generally unknown. We used a common garden experiment to ask whether changes in minimum song frequency observed 30 years after a songbird colonized an urban environment are a consequence of behavioural flexibility. Read More

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December 2020

Beyond thermal melanism: association of wing melanization with fitness and flight behaviour in a butterfly.

Anim Behav 2020 Sep;167:275-288

Life-history Evolution Research Group, University of Helsinki, Organismal and Evolutionary Biology Research Programme, Helsinki, Finland.

Cold developmental conditions can greatly affect adult life history of ectotherms in seasonal habitats. Such effects are mostly negative, but sometimes adaptive. Here, we tested how cold conditions experienced during pupal development affect adult wing melanization of an insect ectotherm, the Glanville fritillary butterfly, . Read More

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September 2020

The role of spatial accuracy and precision in hermit crab contests.

Anim Behav 2020 Sep;167:111-118

School of Biological and Marine Sciences, Animal Behaviour Research Group, University of Plymouth, Plymouth, U.K.

Understanding the determinants of fighting ability (or resource-holding potential, RHP) is key to elucidating the evolution of aggressive behaviour, as current tests of contest theory rely on realistic proxies for overall RHP. Traditionally, RHP is considered equivalent to body size but it is increasingly clear that a wider range of morphological and physiological traits contribute to fighting ability. In situations analogous to contests, such as courtship displays in animals and competitive sport in humans, the role of skill has long been appreciated but this component has been neglected in analyses of animal fights. Read More

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September 2020

Cognitive characteristics of 8- to 10-week-old assistance dog puppies.

Anim Behav 2020 Aug 14;166:193-206. Epub 2020 Jul 14.

Arizona Canine Cognition Center, School of Anthropology, University of Arizona, Tucson, AZ, U.S.A.

To characterize the early ontogeny of dog cognition, we tested 168 domestic dog, , puppies (97 females, 71 males; mean age = 9.2 weeks) in a novel test battery based on previous tasks developed and employed with adolescent and adult dogs. Our sample consisted of Labrador retrievers, golden retrievers and Labrador × golden retriever crosses from 65 different litters at Canine Companions for Independence, an organization that breeds, trains and places assistance dogs for people with disabilities. Read More

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Nest construction and presence do not alter territorial aggression in male threespine stickleback.

Anim Behav 2020 Aug 4;166:9-17. Epub 2020 Jul 4.

The School of Molecular and Cellular Biology, University of Illinois at Urbana Champaign, Urbana, IL, U.S.A.

Constructing a nest within a mating territory provides a clear benefit to the resident, particularly by improving the opportunity to mate. It is unclear whether animals who use nests exclusively for reproductive purposes account for either the effort invested or the resulting increase in mating potential when valuing their territories. We sought to explicitly reveal a nest's added subjective resource value through within-group comparison of aggressive behaviour before and after nest construction. Read More

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Snake alarm calls as a public good in sooty mangabeys.

Anim Behav 2019 Dec;158:201-209

Max Planck Institute for Evolutionary Anthropology, Department of Primatology, Leipzig, Germany.

Transmitting information about the location of a predator in social animal species can be seen as an investment in a public good, where information is the resource and group members benefit from reduced fatalities of kin and cooperation partners in their community. As few empirical tests of this idea exist in natural settings, we conducted a field experiment using snake models in wild sooty mangabeys, . We tested sooty mangabey alarm-calling patterns when exposed to viper models, investigating whether individuals called to signal fitness, to warn specific group members, or when information about the threat is not public, as would be predicted by public goods games. Read More

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December 2019

Larger group sizes facilitate the emergence and spread of innovations in a group-living bird.

Anim Behav 2019 Dec;158:1-7

Centre for Evolutionary Biology, University of Western Australia, Perth, Australia.

The benefits of group living have traditionally been attributed to risk dilution or the efficient exploitation of resources; individuals in social groups may therefore benefit from access to valuable information. If sociality facilitates access to information, then individuals in larger groups may be predicted to solve novel problems faster than individuals in smaller groups. Additionally, larger group sizes may facilitate the subsequent spread of innovations within animal groups, as has been proposed for human societies. Read More

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December 2019

The use of multilayer network analysis in animal behaviour.

Anim Behav 2019 Mar 5;149:7-22. Epub 2019 Feb 5.

Department of Ecology and Evolutionary Biology, University of California, Los Angeles, U.S.A.

Network analysis has driven key developments in research on animal behaviour by providing quantitative methods to study the social structures of animal groups and populations. A recent formalism, known as , has advanced the study of multifaceted networked systems in many disciplines. It offers novel ways to study and quantify animal behaviour through connected 'layers' of interactions. Read More

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Do male sticklebacks use visual and/or olfactory cues to assess a potential mate's history with predation risk?

Anim Behav 2018 Nov 26;145:151-159. Epub 2018 Oct 26.

Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign.

Differential allocation occurs when individuals alter their reproductive investment based on their mate's traits. A previous study showed that male threespine sticklebacks, , reduced courtship towards females that had previously been exposed to predation risk compared to unexposed females. This suggests that males can detect a female's previous history with predation risk, but the mechanisms by which males assess a female's history are unknown. Read More

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November 2018

How cognitive biases select for imperfect mimicry: a study of asymmetry in learning with bumblebees.

Anim Behav 2018 Oct 21;144:125-134. Epub 2018 Sep 21.

Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, U.S.A.

Imperfect mimicry presents a paradox of incomplete adaptation - intuitively, closer resemblance should improve performance. Receiver psychology can often explain why mimetic signals do not always evolve to match those of their models. Here, we explored the influence of a pervasive and powerful cognitive bias where associative learning depends upon an asymmetric interaction between the cue (stimulus) and consequence (reinforcer), such as in rats, which will associate light and tone with shock, and taste with nausea, but not the converse. Read More

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October 2018

Affiliation and disease risk: social networks mediate gut microbial transmission among rhesus macaques.

Anim Behav 2019 May 13;151:131-143. Epub 2019 Apr 13.

Department of Population Health & Reproduction, School of Veterinary Medicine, University of California, Davis, CA, U.S.A.

In social animals, affiliative behaviours bring many benefits, but also costs such as disease risk. The ways in which affiliation may affect the risk of infectious agent transmission remain unclear. Moreover, studies linking variation in affiliative interactions to infectious agent incidence/diversity have speculated that disease transmission may have occurred, rather than revealing that transmission did occur. Read More

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Developmental stage-dependent response and preference for host plant quality in an insect herbivore.

Anim Behav 2019 Apr;150:27-38

Research Centre of Ecological Change, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland.

Larval-derived nutritional reserves are essential in shaping insects' adult fitness. Early larval instars of many Lepidopteran species are often sessile, and the conditions experienced by these larvae are often highly dependent on the mother's oviposition choice. Later larval stages are more mobile and therefore can choose their food whenever alternatives are available. Read More

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Which male and female characteristics influence the probability of extragroup paternities in rhesus macaques, ?

Anim Behav 2018 Jun 24;140:119-127. Epub 2018 May 24.

Junior Research Group of Primate Kin Selection, Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.

Extragroup paternity (EGP) is found across a wide range of species and may entail reproductive benefits, but may also entail costs to both sexes. While population and group parameters affecting the degree of EGPs are relatively well established, less is known about the individual characteristics that make males and females engage in alternative reproductive tactics such as EGP. Applying a combination of long-term demographic and genetic data from the rhesus macaque population of Cayo Santiago (Puerto Rico, U. Read More

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Intraspecific variation in cue-specific learning in sticklebacks.

Anim Behav 2018 Mar 19;137:161-168. Epub 2018 Feb 19.

Program in Ecology, Evolution, and Conservation Biology, School of Integrative Biology, University of Illinois, Urbana, IL, U.S.A.

Animals must identify reliable cues amidst environmental noise during learning, and the cues that are most reliable often depend on the local ecology. Comparing the performance of populations of the same species across multiple versions of a cognitive task can reveal whether some populations learn to use certain cues faster than others. Here, using a criterion-based protocol, we assessed whether two natural populations of sticklebacks differed in how quickly they learned to associate two different discrimination cues with the location of food. Read More

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Plasticity in extended phenotype increases offspring defence despite individual variation in web structure and behaviour.

Anim Behav 2018 Apr 20;138:9-17. Epub 2018 Mar 20.

Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan.

Many animals actively defend their offspring using a range of behaviours from calling and mobbing in birds, to physical grappling in crustaceans, and the expression of these behaviours positively scale with offspring value. While this role of behaviour in defence is well studied, very little is known about how other traits, specifically the structure of architectural constructions such as webs and nests, contribute to offspring defence. Additionally, although some tax a show consistent individual differences in offspring defence behaviour, it is completely unknown whether individuals also differ in defensive structures. Read More

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No task specialization among helpers in Damaraland mole-rats.

Anim Behav 2018 Sep;143:9-24

Department of Zoology, University of Cambridge, Cambridge, U.K.

The specialization of individuals in specific behavioural tasks is often attributed either to irreversible differences in development, which generate functionally divergent cooperative phenotypes, or to age-related changes in the relative frequency with which individuals perform different cooperative activities; both of which are common in many insect caste systems. However, contrasts in cooperative behaviour can take other forms and, to date, few studies of cooperative behaviour in vertebrates have explored the effects of age, adult phenotype and early development on individual differences in cooperative behaviour in sufficient detail to discriminate between these alternatives. Here, we used multinomial models to quantify the extent of behavioural specialization within nonreproductive Damaraland mole-rats, , at different ages. Read More

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September 2018

Individuals in larger groups are more successful on spatial discrimination tasks.

Anim Behav 2018 Aug;142:87-93

Centre for Research in Animal Behaviour, Psychology, University of Exeter, Exeter, U.K.

To understand how natural selection may act on cognitive processes, it is necessary to reliably determine interindividual variation in cognitive abilities. However, an individual's performance in a cognitive test may be influenced by the social environment. The social environment explains variation between species in cognitive performances, with species that live in larger groups purportedly demonstrating more advanced cognitive abilities. Read More

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In wolves, play behaviour reflects the partners' affiliative and dominance relationship.

Anim Behav 2018 Jul;141:137-150

Wolf Science Center, Domestication Lab, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine, Vienna, Austria.

Puppy packs (consisting of only puppies) and mixed-age packs (composed of puppies and adults) were observed to test whether social play can be used for assessing and establishing social relations in wolves, . Differently from previous studies, we looked at play behaviours in detail, allowing us to categorize play interactions as either competitive or relaxed, and predicted that different types of play would be associated with different relationships between individuals. We found that the more time dyads spent in relaxed play, the more affiliative interactions they exchanged outside of play. Read More

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Experimental manipulation of incubation period reveals no apparent costs of incubation in house wrens.

Anim Behav 2018 Mar 19;137:167-177. Epub 2018 Feb 19.

Behavior, Ecology, Evolution and Systematics Section, School of Biological Sciences, Illinois State University, Normal, IL, U.S.A.

Fitness costs of incubation ensue whenever the trade-off between incubation and foraging leads to suboptimal incubation or decreased parental body condition. We examined the costs of incubation in a wild population of house wrens, , by experimentally extending or decreasing the incubation period by cross-fostering eggs between nests at different stages of incubation (eggs from control nests were cross-fostered at the same stage of incubation). We determined whether parents or offspring bear the costs of incubation by measuring effects on females and offspring within the same breeding season during which the manipulation occurred, but also by evaluating potential trade-offs between current and future reproduction by monitoring return rates of experimental females and recruitment rates of offspring in subsequent breeding seasons. Read More

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Social network dynamics precede a mass eviction in group-living rhesus macaques.

Anim Behav 2018 Feb 28;136:185-193. Epub 2017 Sep 28.

Centre for Research in Animal Behaviour, University of Exeter, Exeter, U.K.

Network dynamics can reveal information about the adaptive function of social behaviour and the extent to which social relationships can flexibly respond to extrinsic pressures. Changes in social networks occur following changes to the social and physical environment. By contrast, we have limited understanding of whether changes in social networks precede major group events. Read More

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February 2018

Does the handicap principle explain the evolution of dimorphic ornaments?

Anim Behav 2018 Apr;138:e7-e10

Konrad Lorenz Institute of Ethology, Department of Integrative Biology and Evolution, University of Veterinary Medicine, Vienna, Austria.

•We reinvestigate a new model based on the handicap hypothesis.•We show the handicap hypothesis does not explain male dimorphisms.•The results are due to the 'playing-the-field' assumption of the model. Read More

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The multidimensional behavioural hypervolumes of two interacting species predict their space use and survival.

Anim Behav 2017 Oct 5;132:129-136. Epub 2017 Sep 5.

Department of Ecology, Evolution & Marine Biology, University of California Santa Barbara, Santa Barbara, CA, U.S.A.

Individual animals differ consistently in their behaviour, thus impacting a wide variety of ecological outcomes. Recent advances in animal personality research have established the ecological importance of the multidimensional behavioural volume occupied by individuals and by multispecies communities. Here, we examine the degree to which the multidimensional behavioural volume of a group predicts the outcome of both intra- and interspecific interactions. Read More

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October 2017

Why come back home? Breeding-site fidelity varies with group size and parasite load in a colonial bird.

Anim Behav 2017 Oct 11;132:167-180. Epub 2017 Sep 11.

School of Natural Resources, University of Nebraska, Lincoln, NE, U.S.A.

Fidelity to a past breeding site is widespread among animals and may confer both costs and benefits. Colonial species occur at specific sites that can accommodate multiple breeders, and the choice of whether to return to last year's site or disperse elsewhere can affect colony site use, the colony size distribution and individual fitness. For the colonial cliff swallow, , which occupies colonies of widely different sizes, we used a 30-year field study in western Nebraska to investigate how the extent of infestation by ectoparasites and colony size affected breeders' colony site fidelity between years. Read More

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October 2017

Chimpanzees gesture to humans in mirrors: using reflection to dissociate seeing from line of gaze.

Anim Behav 2018 Jan 26;135:239-249. Epub 2017 Dec 26.

Neuroscience Institute and Language Research Center, Georgia State University, Atlanta, GA, U.S.A.

There is much experimental evidence suggesting that chimpanzees understand that others see. However, previous research has never experimentally ruled out the alternative explanation that chimpanzees are just responding to the geometric cue of 'direct line of gaze', the observable correlate of seeing in others. Here, we sought to resolve this ambiguity by dissociating seeing from direct line of gaze using a mirror. Read More

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January 2018