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  • Cost of an elaborate trait: a trade-off between attracting females and maintaining a clean ornament
    Behav. Ecol. (IF 2.761) Pub Date : 2020-08-04
    Erin L McCullough; Chun-Chia Chou; Patricia R Y Backwell

    Many sexually selected ornaments and weapons are elaborations of an animal’s outer body surface, including long feathers, colorful skin, and rigid outgrowths. The time and energy required to keep these traits clean, attractive, and in good condition for signaling may represent an important but understudied cost of bearing a sexually selected trait. Male fiddler crabs possess an enlarged and brightly

  • Maternal predation risk increases offspring’s exploration but does not affect schooling behavior
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-21
    Silvia Cattelan; James Herbert-Read; Paolo Panizzon; Alessandro Devigili; Matteo Griggio; Andrea Pilastro; Chiara Morosinotto

    The environment that parents experience can influence their reproductive output and their offspring’s fitness via parental effects. Perceived predation risk can affect both parent and offspring phenotype, but it remains unclear to what extent offspring behavioral traits are affected when the mother is exposed to predation risk. This is particularly unclear in live-bearing species where maternal effects

  • Contingent trade-off decisions with feedbacks in cyclical environments: testing alternative theories
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-21
    Steven F Railsback; Bret C Harvey; Daniel Ayllón

    Many animals make contingent decisions, such as when and where to feed, as trade-offs between growth and risk when these vary not only with activity and location but also 1) in cycles such as the daily light cycle and 2) with feedbacks due to competition. Theory can assume an individual decides whether and where to feed, at any point in the light cycle and under any new conditions, by predicting future

  • Perception, decision, and selection: a comment on Green et al.
    Behav. Ecol. (IF 2.761) Pub Date : 2020-06-18
    Andrew C Mason

    This is a timely review in the context of current efforts to develop the concept of receiver psychology (Guildford and Dawkins 1991) more systematically and in a way that generates clear and testable hypotheses (Miller and Bee 2012). To a large extent, this means novel applications for some of the well-developed tools for quantitative analysis of behavior derived from psychology and cognitive science

  • The many dimensions of categorical perception: a response to comments on Green et al.
    Behav. Ecol. (IF 2.761) Pub Date : 2020-06-18
    Patrick A Green; Nicholas C Brandley; Stephen Nowicki

    We appreciate the constructive commentaries on our review of categorical perception (Green et al. 2020). As we detail below, these commentaries suggest several useful pathways toward understanding the physiological, ecological, and evolutionary mechanisms underlying categorical perception’s role in animal communication and decision-making.

  • Power and punishment influence negotiations over parental care
    Behav. Ecol. (IF 2.761) Pub Date : 2020-06-13
    Tina A Barbasch; Suzanne H Alonzo; Peter M Buston

    Asymmetries in power (the ability to influence the outcome of conflict) are ubiquitous in social interactions because interacting individuals are rarely identical. It is well documented that asymmetries in power influence the outcome of reproductive conflict in social groups. Yet power asymmetries have received little attention in the context of negotiations between caring parents, which is surprising

  • Show me you care: female mate choice based on egg attendance rather than male or territorial traits
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-31
    Anyelet Valencia-Aguilar; Kelly R Zamudio; Célio F B Haddad; Steve M Bogdanowicz; Cynthia P A Prado

    Female mate choice is often based on male traits, including signals or behaviors, and/or the quality of a male’s territory. In species with obligate paternal care, where care directly affects offspring survival, females may also base their mate choices on the quality of a sire’s care. Here, we quantified male reproductive success in a natural population of the glass frog Hyalinobatrachium cappellei

  • Temporally variable predation risk and fear retention in Trinidadian guppies
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-23
    Adam L Crane; Laurence E A Feyten; Indar W Ramnarine; Grant E Brown

    Predation fear is a unifying theme across vertebrate taxa. Here, we explored how the frequency and duration of predation risk affects postrisk fear behavior in Trinidadian guppies. We first exposed individuals to visual cues of potential predators for 3 days, either frequently (6×/day) or infrequently (1×/day). Each exposure lasted for either a relatively brief (5 min) or long (30 min) duration, whereas

  • Vocal recognition suggests premating isolation between lineages of a lekking hummingbird
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-23
    Nataly Cruz-Yepez; Clementina González; Juan Francisco Ornelas

    Species with genetically differentiated allopatric populations commonly differ in phenotypic traits due to drift and/or selection, which can be important drivers of reproductive isolation. Wedge-tailed sabrewing (Campylopterus curvipennis) is a species complex composed of three genetically and acoustically differentiated allopatric lineages that correspond to currently recognized subspecies in Mexico:

  • Hidden leks in a migratory songbird: mating advantages for earlier and more attractive males
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-21
    Lilian T Manica; Jeff A Graves; Jeffrey Podos; Regina H Macedo

    In some socially monogamous birds, territories sometimes occur in aggregations. The “hidden lek” hypothesis suggests that territorial aggregations might be explained by males establishing territories near successful males (“hotshot” model) or by females preferring to mate in large clusters (“female preference” model). In both scenarios, clusters would provide more opportunities for finding mates and

  • Polyandry and paternity affect disease resistance in eusocial wasps
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-16
    Tatsuya Saga; Masaki Okuno; Kevin J Loope; Koji Tsuchida; Kako Ohbayashi; Masakazu Shimada; Yasukazu Okada

    Polyandry (multiple mating by females) is a central challenge for understanding the evolution of eusociality. Several hypotheses have been proposed to explain its observed benefits in eusocial Hymenoptera, one of which, the parasite–pathogen hypothesis (PPH), posits that high genotypic variance among workers for disease resistance prevents catastrophic colony collapse. We tested the PPH in the polyandrous

  • Juvenile social dynamics reflect adult reproductive strategies in bottlenose dolphins
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-14
    Allison A Galezo; Vivienne Foroughirad; Ewa Krzyszczyk; Céline H Frère; Janet Mann

    The juvenile period is a challenging life-history stage, especially in species with a high degree of fission–fusion dynamics, such as bottlenose dolphins, where maternal protection is virtually absent. Here, we examined how juvenile male and female bottlenose dolphins navigate this vulnerable period. Specifically, we examined their grouping patterns, activity budget, network dynamics, and social associations

  • Social context and noise affect within and between male song adjustments in a common passerine
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-14
    Erin E Grabarczyk; Maarten J Vonhof; Sharon A Gill

    Across populations, animals that inhabit areas with high anthropogenic noise produce vocalizations that differ from those inhabiting less noisy environments. Such patterns may be due to individuals rapidly adjusting their songs in response to changing noise, but individual variation is seldom explored. Therefore, we tested the hypothesis that male house wrens (Troglodytes aedon) immediately adjust

  • A meta-analysis of factors influencing the strength of mate-choice copying in animals
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-09
    Alice D Davies; Zenobia Lewis; Liam R Dougherty

    Mate-choice copying is a form of social learning in which an individual’s choice of mate is influenced by the apparent choices of other individuals of the same sex and has been observed in more than 20 species across a broad taxonomic range. Though fitness benefits of copying have proven difficult to measure, theory suggests that copying should not be beneficial for all species or contexts. However

  • Contrasting parental color morphs increase regularity of prey deliveries in an African raptor
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-09
    Carina Nebel; Petra Sumasgutner; Shane C McPherson; Gareth J Tate; Arjun Amar

    Disassortative mating in color-polymorphic raptors is a proposed mechanism for the maintenance of color polymorphism in populations. Selection for such a mating system may occur if there are fitness advantages of mating with a contrasting morph. In the black sparrowhawk (Accipiter melanoleucus), mixed-morph pairs may have a selective advantage because they produce offspring that have higher survival

  • Neighborhood bully: no difference in territorial response toward neighbors or strangers in marmots
    Behav. Ecol. (IF 2.761) Pub Date : 2020-07-04
    Mariona Ferrandiz-Rovira; Timothée Zidat; Pierre Dupont; Vérane Berger; Célia Rézouki; Aurélie Cohas

    Territorial animals are expected to adjust their response to intruders according to the perceived threat level. One of the factors that drives threat level is the identity of the intruder. The dear enemy phenomenon theory postulates that individuals should respond with lower intensity to neighbors, already possessing a territory, than to strangers that may fight to evict them. In social species, the

  • Acorn woodpeckers vocally discriminate current and former group members from nongroup members
    Behav. Ecol. (IF 2.761) Pub Date : 2020-06-18
    Michael A Pardo; Casey E Hayes; Eric L Walters; Walter D Koenig

    In species with long-term social relationships, the ability to recognize individuals after extended separation and the ability to discriminate between former social affiliates that have died and those that have left the group but may return are likely to be beneficial. Few studies, however, have investigated whether animals can make these discriminations. We presented acorn woodpeckers (Melanerpes

  • Colony size affects breeding density, but not spatial distribution type, in a seabird
    Behav. Ecol. (IF 2.761) Pub Date : 2020-06-17
    Sandra Bouwhuis; Felix Ballani; Marie Bourgeois; Dietrich Stoyan

    The spatial distribution of individuals within populations can result in fine-scale density dependence and affect the social environment that is encountered. As such, it is important to quantify within-population spatial structuring and understand the factors that shape it. In this study, we make use of point process statistics to test whether colony size affects the statistical type of spatial nest

  • An invasive amphibian drives antipredator responses in two prey at different trophic positions
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-21
    Jean Secondi; Fanny Raux

    Generalist invasive predators consume prey at different trophic levels and generate drastic changes in local communities. However, the long-term effects of predation may be reduced by eco-evolutionary responses of native populations. The capacity of prey species distributed across the trophic network to develop antipredator responses may determine the ecosystem potential to buffer against the invader

  • Sexual selection on size and shape in Japanese beetles (Popillia japonica)
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Clint D Kelly

    The mobility hypothesis argues that species in which males compete for mates in scrambles often exhibit female-biased size dimorphism because smaller male body size should increase male mobility and success in searching for mates. Sexual dimorphism can be further exaggerated if fecundity or sexual selection concurrently selects for larger female size. Scramble competition can select for trait characteristics

  • The signals and category boundaries that enable categorical perception: a comment on Green et al.
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Jessie C Tanner; James P Tumulty

    Categorical perception, initially thought to be a unique feature of human speech, has been documented in a number of nonhuman animals, but its prevalence and broad importance remain unclear. Green et al. (2020) review the evidence for categorical perception and propose some animal communication contexts in which they expect categorical perception to be important. A good review article goes beyond summarizing

  • It’s not all about temperature: breeding success also affects nest design
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Sophie C Edwards; Tanya T Shoot; R Jeffrey Martin; David F Sherry; Susan D Healy

    There are numerous observational studies on intraspecific variation in avian nest building and a single experimental manipulation. The general consensus is that birds build nests in response to environmental conditions, but it is not clear whether such flexibility in nest building is reproductively advantageous. To test the relationship between building flexibility and reproductive success, we allowed

  • Leave me alone: solitary females attract more mates in a nocturnal insect
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Topi K Lehtonen; Arja Kaitala

    Spatial distributions of sexual competitors and potential mating partners have a large impact on sexual selection and mating systems. Typically, such effects are investigated with regard to male aggregations. However, females may also need to compete for mating opportunities. Here, we investigated the consequences of clustering and rival attractiveness on female mate attraction success under field

  • Out in the open: behavior’s effect on predation risk and thermoregulation by aposematic caterpillars
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Matthew E Nielsen; Johanna Mappes

    Warning coloration should be under strong stabilizing selection but often displays considerable intraspecific variation. Opposing selection on color by predators and temperature is one potential explanation for this seeming paradox. Despite the importance of behavior for both predator avoidance and thermoregulation, its role in mediating selection by predators and temperature on warning coloration

  • Male rock lizards may compensate reproductive costs of an immune challenge affecting sexual signals
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Gonzalo Rodríguez-Ruiz; Jesús Ortega; José Javier Cuervo; Pilar López; Alfredo Salvador; José Martín

    Sexual signals can be evolutionarily stable if they are condition dependent or costly to the signaler. One of these costs may be the trade-off between maintaining the immune system and the elaboration of ornaments. Experimental immune challenges in captivity show a reduction in the expression of sexual signals, but it is not clear whether these detrimental effects are important in nature and, more

  • Mate availability determines use of alternative reproductive phenotypes in hermaphrodites
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Anja Felmy; Nora Weissert; Joseph Travis; Jukka Jokela

    In many species, individuals can employ alternative reproductive phenotypes, with profound consequences for individual fitness and population dynamics. This is particularly relevant for self-compatible hermaphrodites, which have exceptionally many reproductive options. Here we investigated the occurrence of reproductive phenotypes in the simultaneously hermaphroditic freshwater snail Radix balthica

  • Queen succession conflict in the paper wasp Polistes dominula is mitigated by age-based convention
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Benjamin A Taylor; Alessandro Cini; Rita Cervo; Max Reuter; Seirian Sumner

    Reproduction in cooperative animal groups is often dominated by one or a few individuals, with the remaining group members relegated to nonreproductive helping roles. This reproductive skew can evolve if helpers receive fitness benefits such as potential future inheritance of the breeding position, but the mechanisms by which inheritance is determined are not well resolved. Polistes paper wasps form

  • Volatile fatty acid and aldehyde abundances evolve with behavior and habitat temperature in Sceloporus lizards
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Stephanie M Campos; Jake A Pruett; Helena A Soini; J Jaime Zúñiga-Vega; Jay K Goldberg; Cuauhcihuatl Vital-García; Diana K Hews; Milos V Novotny; Emília P Martins

    Animal signals evolve by striking a balance between the need to convey information through particular habitats and the limitations of what types of signals can most easily be produced and perceived. Here, we present new results from field measures of undisturbed behavior and biochemical analyses of scent marks from 12 species of Sceloporus lizards to explore whether evolutionary changes in chemical

  • Extraterritorial forays by great tits are associated with dawn song in unexpected ways
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-20
    Nina Bircher; Kees van Oers; Camilla A Hinde; Marc Naguib

    Conspicuous male signals often play an important role in both attracting mates and deterring rivals. In territorial species with extrapair mating, female and male forays to other territories may be an important component underlying female choice and male mating success and might be influenced by male advertisement signals. Yet, whether off-territory foraying is associated with male signals is still

  • Temporal variation in maternal nest choice and its consequences for lizard embryos
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-16
    Jenna E Pruett; Amélie Fargevieille; Daniel A Warner

    Microhabitat choice of nest sites is an important maternal effect that influences the survival and development of embryos in oviparous species. Embryos of many species display a high degree of plasticity in response to developmental environments, which places maternal nesting behavior under strong selective pressure, particularly in temporally changing environments. Nesting behavior varies widely across

  • Beak coloration of starling (Sturnus unicolor) males depends on the length of their throat feathers
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-13
    Manuel Azcárate-García; Magdalena Ruiz-Rodríguez; Cristina Ruiz-Castellano; Silvia Díaz-Lora; Gustavo Tomás; Manuel Martín-Vivaldi; Juan José Soler

    Within the context of complex sexual signaling, most research has focused on exploring the associations between several signals and/or their relationships with different proxies of individual quality. However, very few studies have focused on checking whether the expression of one signal is conditioned by the expression of the others. Here, by experimentally shortening the throat feathers of male spotless

  • Females of a solitary bee reject males to collect food for offspring
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-13
    Ana Laura Dutra; Clemens Schlindwein; Reisla Oliveira

    The time dedicated to courtship and copulation is the most general cost of mating for females. However, quantitative estimates of this cost and the consequences for female mating behavior have been investigated for only a few model organisms and mostly under laboratory conditions. We determined the costs of copulations and persistent courtship by males in terms of time for females of the solitary bee

  • Honest signaling of cooperative intentions
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-13
    Gilbert Roberts

    Trust can transform conflicting interests into cooperation. But how can individuals know when to trust others? Here, I develop the theory that reputation building may signal cooperative intent, or “trustworthiness.” I model a simple representation of this theory in which individuals 1) optionally invest in a reputation by performing costly helpful behavior (“signaling”); 2) optionally use others’ reputations

  • The ecological context and fitness impact of categorical perception: a comment on Green et al.
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-13
    Alec B Luro; Mark E Hauber

    Animals, including humans, must make sense of information, bombarding them from the enviroment, quickly and effectively. Categorical perception is one such process, and the evidence for it is increasing. We argue that the next step in the research of category-based decision making should be to study wild animals in the field and in behavioral contexts that have strong fitness-relevant impacts. We illustrate

  • Novel sources of (co)variation in nestling begging behavior and hunger at different biological levels of analysis
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-06
    Daniel P Wetzel; Ariane Mutzel; Jonathan Wright; Niels J Dingemanse

    Biological hypotheses predicting patterns of offspring begging typically concern the covariance with hunger and/or development at specific hierarchical levels. For example, hunger drives within-individual patterns of begging, but begging also drives food intake among individuals within broods, and begging and food intake can covary positively or negatively among genotypes or broods. Testing biological

  • Contrasts in kinship structure in mammalian societies
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-06
    Mark Dyble; Tim H Clutton-Brock

    Comparative studies of mammals confirm Hamilton’s prediction that differences in cooperative and competitive behavior across species will be related to contrasts in kinship between group members. Although theoretical models have explored the factors affecting kinship within social groups, few have analyzed the causes of contrasts in kinship among related species. Here, we describe interspecific differences

  • Phenotypic flexibility in background-mediated color change in sticklebacks
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-06
    Petter Tibblin; Marcus Hall; P Andreas Svensson; Juha Merilä; Anders Forsman

    Phenotypic flexibility may incur a selective advantage in changing and heterogeneous environments, and is increasingly recognized as an integral aspect of organismal adaptation. Despite the widespread occurrence and potential importance of rapid and reversible background-mediated color change for predator avoidance, knowledge gaps remain regarding its adaptive value, repeatability within individuals

  • Monotocy and the evolution of plural breeding in mammals
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-06
    Dieter Lukas; Tim Clutton-Brock

    In many mammals, breeding females are intolerant of each other and seldom associate closely but, in some, they aggregate in groups that vary in size, stability, and kinship structure. Aggregation frequently increases competition for food, and interspecific differences in female sociality among mammals are commonly attributed to contrasts in ecological parameters, including variation in activity timing

  • Corrigendum to: “Predator and prey activity levels jointly influence the outcome of long-term foraging bouts” (2013) 24:1205–1210, doi:10.1093/beheco/art052
    Behav. Ecol. (IF 2.761) Pub Date : 2020-05-05
    Carl N Keiser; Kayla Sweeney; Brian Cusack; Fawn Armagost; Jonathan N Pruitt

    The authors of the paper “Predator and prey activity levels jointly influence the outcome of long-term foraging bouts” published by Sweeney et al. in Behavioral Ecology in 2013 (doi:10.1093/beheco/art052) recently investigated some irregularities in the raw data. This experiment was conducted primarily by undergraduates in the Pruitt Lab in 2012. Sweeney, Cusack, Armagost, and O’Brien conducted single

  • Juvenile socio-ecological environment shapes material technology in nest-building birds
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-30
    Alexis J Breen; Keren E Lovie; Chloé Guerard; Sophie C Edwards; Jasmine Cooper; Susan D Healy; Lauren M Guillette

    Variation in animal material technology, such as tool use and nest construction, is thought to be caused, in part, by differences in the early-life socio-ecological environment—that is, who and what is around—but this developmental hypothesis remains unconfirmed. We used a tightly controlled developmental paradigm to determine whether adult and/or raw-material access in early life shape first-time

  • Defense against predators incurs high reproductive costs for the aposematic moth Arctia plantaginis
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-15
    Carita Lindstedt; Kaisa Suisto; Emily Burdfield-Steel; Anne E Winters; Johanna Mappes

    To understand how variation in warning displays evolves and is maintained, we need to understand not only how perceivers of these traits select color and toxicity but also the sources of the genetic and phenotypic variation exposed to selection by them. We studied these aspects in the wood tiger moth Arctia plantaginis, which has two locally co-occurring male color morphs in Europe: yellow and white

  • Full spectra coloration and condition-dependent signaling in a skin-based carotenoid sexual ornament
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-09
    Sarah Harris; Matti Kervinen; Christophe Lebigre; Thomas W Pike; Carl D Soulsbury

    Carotenoid-based traits commonly act as condition-dependent signals of quality to both males and females. Such colors are typically quantified using summary metrics (e.g., redness) derived by partitioning measured reflectance spectra into blocks. However, perceived coloration is a product of the whole spectrum. Recently, new methods have quantified a range of environmental factors and their impact

  • Age and location influence the costs of compensatory and accelerated growth in a hibernating mammal
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-06
    Sarah Heissenberger; Gabriela Medeiros de Pinho; Julien G A Martin; Daniel T Blumstein

    The increase of structural growth rates to compensate for a poor initial body condition, defined as compensatory growth, may have physiological costs, but little is known about its effects on individual fitness in the wild. Yellow-bellied marmots (Marmota flaviventer) are obligate hibernators and depend on fat accumulation acquired during an approximately 4-month summer to survive overwinter. We investigated

  • First explorations: ontogeny of central place foraging directions in two tropical seabirds
    Behav. Ecol. (IF 2.761) Pub Date : 2020-04-04
    Julien Collet; Aurélien Prudor; Alexandre Corbeau; Loriane Mendez; Henri Weimerskirch

    A widespread hypothesis for the ontogeny of behavior and decision-making is the early-exploration-later-canalization hypothesis. It postulates that juveniles are more exploratory and adults more consistent in their behavior. In addition, it is often assumed that naïve juveniles could overcome the costs of individual experience building by copying more the decisions of others than adults (early-con

  • Song overlapping, noise, and territorial aggression in great tits
    Behav. Ecol. (IF 2.761) Pub Date : 2020-03-29
    Çağlar Akçay; Y Kağan Porsuk; Alican Avşar; Dilan Çabuk; C Can Bilgin

    Communication often happens in noisy environments where interference from the ambient noise and other signalers may reduce the effectiveness of signals which may lead to more conflict between interacting individuals. Signalers may also evolve behaviors to interfere with signals of opponents, for example, by temporally overlapping them with their own, such as the song overlapping behavior that is seen

  • Heritability and correlations among learning and inhibitory control traits
    Behav. Ecol. (IF 2.761) Pub Date : 2020-03-29
    Ellis J G Langley; Gracie Adams; Christine E Beardsworth; Deborah A Dawson; Philippa R Laker; Jayden O van Horik; Mark A Whiteside; Alastair J Wilson; Joah R Madden

    To understand the evolution of cognitive abilities, we need to understand both how selection acts upon them and their genetic (co)variance structure. Recent work suggests that there are fitness consequences for free-living individuals with particular cognitive abilities. However, our current understanding of the heritability of these abilities is restricted to domesticated species subjected to artificial

  • Sexual size dimorphism and sexual selection in artiodactyls
    Behav. Ecol. (IF 2.761) Pub Date : 2020-03-29
    Marcelo H Cassini

    Sexual size dimorphism is biased toward males in most mammalian species. The most common explanation is precopulatory intramale sexual selection. Large males win fights and mate more frequently. In artiodactyls, previous tests of this hypothesis consisted of interspecific correlations of sexual dimorphism with group size as a surrogate for the intensity of sexual selection (Is). However, group size

  • Towards a comparative approach to the structure of animal personality variation
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-26
    White S, Pascall D, Wilson A, et al.

    Latent personality traits underpinning observed behavioral variation have been studied in a great many species. However, a lack of standardized behavioral assays, coupled to a common reliance on inferring personality from a single, observed, behavioral trait makes it difficult to determine if, when, and how conclusions can be directly compared across taxa. Here, we estimate the among-individual (co)variance

  • Female solo song and duetting are associated with different territoriality in songbirds
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-26
    Mikula P, Tószögyová A, Hořák D, et al.

    Recently, there has been an increased effort to unravel selective factors behind female song evolution in songbirds. Female birds which produce songs may sing either solo or in duets; although the 2 vocal performances likely evolved through different selection forces and mechanisms, the majority of large-scale studies to date have focused only on duetting or female song in general (pooling female solo

  • Space use by animals on the urban fringe: interactive effects of sex and personality
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-26
    Wat K, Herath A, Rus A, et al.

    Personality traits shape individual perceptions of risks and rewards, and so, should affect how animals value and use their environment. Evidence is emerging that personality affects foraging, space use, and exploitation of novel environments such as urban habitat. But the influence of personality is also hypothesized to be sex-dependent when primary motivation for space use differs between sexes,

  • Ocean warming increases availability of crustacean prey via riskier behavior
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-21
    Marangon E, Goldenberg S, Nagelkerken I, et al.

    Marine prey and predators will respond to future climate through physiological and behavioral adjustments. However, our understanding of how such direct effects may shift the outcome of predator–prey interactions is still limited. Here, we investigate the effects of ocean warming and acidification on foraging behavior and biomass of a common prey (shrimps, Palaemon spp.) tested in large mesocosms harboring

  • Quantifying the structure and dynamics of fish shoals under predation threat in three dimensions
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-18
    Romenskyy M, Herbert-Read J, Ioannou C, et al.

    Detailed quantifications of how predators and their grouping prey interact in three dimensions (3D) remain rare. Here we record the structure and dynamics of fish shoals (Pseudomugil signifer) in 3D both with and without live predators (Philypnodon grandiceps) under controlled laboratory conditions. Shoals adopted two distinct types of shoal structure: “sphere-like” geometries at depth and flat “carpet-like”

  • Cross-activity of honeybee queen mandibular pheromone in bumblebees provides evidence for sensory exploitation
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-07
    Princen S, Van Oystaeyen A, Petit C, et al.

    The evolutionary origin of queen pheromones (QPs), which regulate reproductive division of labor in insect societies, has been explained by two evolutionary scenarios: the sender-precursor hypothesis and the sensory exploitation hypothesis. These scenarios differ in terms of whether the signaling system was built on preadaptations on the part of either the sender queens or the receiver workers. While

  • Burrow usage patterns and decision-making in meerkat groups
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-06
    Strandburg-Peshkin A, Clutton-Brock T, Manser M, et al.

    Choosing suitable sleeping sites is a common challenge faced by animals across a range of taxa, with important implications for the space usage patterns of individuals, groups, and ultimately populations. A range of factors may affect these decisions, including access to resources nearby, shelter from the elements, safety from predators, territorial defense, and protection of offspring. We investigated

  • Hierarchically embedded interaction networks represent a missing link in the study of behavioral and community ecology
    Behav. Ecol. (IF 2.761) Pub Date : 2019-10-11
    Montiglio P, Gotanda K, Kratochwil C, et al.

    Because genes and phenotypes are embedded within individuals, and individuals within populations, interactions within one level of biological organization are inherently linked to interactors at others. Here, we expand the network paradigm to consider that nodes can be embedded within other nodes, and connections (edges) between nodes at one level of organization form “bridges” for connections between

  • Reduced cooperative behavior as a cost of high testosterone in a lekking passerine bird
    Behav. Ecol. (IF 2.761) Pub Date : 2019-12-11
    Vernasco B, Horton B, Moore I, et al.

    Many studies have identified the reproductive benefits of cooperative behaviors, yet few have identified the mechanisms that underlie these behaviors. Mechanistic studies can inform our understanding of why some individuals are more or less cooperative, as well as identify the physiological constraints imposed upon the evolution of reproductive traits. Male wire-tailed manakins (Pipra filicauda) exhibit

  • No evidence for an adaptive role of early molt into breeding plumage in a female fairy wren
    Behav. Ecol. (IF 2.761) Pub Date : 2019-12-11
    Nolazco S, Hall M, Kingma S, et al.

    The evolution of ornaments as sexually selected signals is well understood in males, but female ornamentation remains understudied. Fairy wrens offer an excellent model system, given their complex social structure and mating systems, and the diversity of female ornamentation. We investigated whether early molt into ornamental breeding plumage plays an adaptive role in females of the monogamous purple-crowned

  • Vocal characteristics of prairie dog alarm calls across an urban noise gradient
    Behav. Ecol. (IF 2.761) Pub Date : 2019-12-06
    Shannon G, McKenna M, Wilson-Henjum G, et al.

    Increasing anthropogenic noise is having a global impact on wildlife, particularly due to the masking of crucial acoustical communication. However, there have been few studies examining the impacts of noise exposure on communication in free-ranging terrestrial mammals. We studied alarm calls of black-tailed prairie dogs (Cynomys ludovicianus) across an urban gradient to explore vocal adjustment relative

  • Predators’ consumption of unpalatable prey does not vary as a function of bitter taste perception
    Behav. Ecol. (IF 2.761) Pub Date : 2019-12-03
    Hämäläinen L, Mappes J, Thorogood R, et al.

    Many prey species contain defensive chemicals that are described as tasting bitter. Bitter taste perception is, therefore, assumed to be important when predators are learning about prey defenses. However, it is not known how individuals differ in their response to bitter taste, and how this influences their foraging decisions. We conducted taste perception assays in which wild-caught great tits (Parus

  • Serotonin differentially affects morph-specific behavior in divergent populations of a horned beetle
    Behav. Ecol. (IF 2.761) Pub Date : 2019-11-29
    Newsom K, Moczek A, Schwab D, et al.

    Associations between animal weapons and corresponding aggressive behaviors are among the most characteristic features of species, yet at the same time their co-expression is itself often strongly dependent on context, such as male condition or population ecology. Yet the mechanisms that modulate associations between aggression, morphology, and biological context remain poorly understood. The biogenic

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