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Open habitats promote female group formation in a solitary ungulate: the Japanese serow Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-27 Hayato Takada, Masato Minami
Abstract Understanding the factors that drive the evolution of sociality is one of the central issues in behavioural ecology. In ungulates, open habitats, such as alpine meadows, are thought to have promoted the evolution of various gregarious societies from solitary territorial lifestyles. However, the transition from a solitary territorial lifestyle to a gregarious society and the ultimate factors
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Effects of maternal exposure to a bacterial antigen and altered post-hatching rearing conditions on avian offspring behaviour Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-26 Rafał Martyka, Ewa B. Śliwińska, Piotr Tryjanowski
Abstract The early-life environment plays a crucial role in shaping morphological, physiological, and behavioural traits, with potential long-term consequences for fitness. Indeed, a set of factors experienced by offspring during prenatal and early post-natal development has been recognised to affect behavioural trait expression in later life. Several studies have shown that in birds, nutritional and
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Individual behavioural traits not social context affects learning about novel objects in archerfish Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-22 Nick A. R. Jones, Helen C. Spence-Jones, Mike Webster, Luke Rendell
Abstract Learning can enable rapid behavioural responses to changing conditions but can depend on the social context and behavioural phenotype of the individual. Learning rates have been linked to consistent individual differences in behavioural traits, especially in situations which require engaging with novelty, but the social environment can also play an important role. The presence of others can
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Correction to: Kin bias and male pair-bond status shape male-male relationships in a multilevel primate society Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-19 Federica Dal Pesco, Franziska Trede, Dietmar Zinner, Julia Fischer
A Correction to this paper has been published: https://doi.org/10.1007/s00265-021-02993-7
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Call rate, fundamental frequency, and syntax determine male-call attractiveness in blue petrels Halobaena caerulea Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-18 Charlène Gémard, Thierry Aubin, Eliette L. Reboud, Francesco Bonadonna
Abstract In blue petrels (Halobaena caerulea), females are supposed to be particularly choosy and mate choice can take a couple of years. In these lifelong monogamous seabirds, choosing a good mate is crucial and has a strong influence on their fitness. Due to their nocturnal habits, the absence of sexual dimorphism, and the physical barrier between males calling from their burrow and females flying
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Family feud: permanent group splitting in a highly philopatric mammal, the killer whale ( Orcinus orca ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-18 Eva H. Stredulinsky, Chris T. Darimont, Lance Barrett-Lennard, Graeme M. Ellis, John K. B. Ford
Abstract For animals that tend to remain with their natal group rather than individually disperse, group sizes may become too large to benefit individual fitness. In such cases, group splitting (or fission) allows philopatric animals to form more optimal group sizes without sacrificing all familiar social relationships. Although permanent group splitting is observed in many mammals, it occurs relatively
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Detectability is in the eye of the beholder—the role of UV reflectance on tadpole detection and predation by a passerine bird Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-15 Ítalo Moreira Martins, Angélica da Silva Vasconcellos, Theo Mota, Paula Cabral Eterovick
Abstract The evolution of defensive coloration is dependent upon a complex combination of variables related to the prey itself, the environmental context, and predator vision/behavior. Some animals reflect ultraviolet (UV) light, which is visible to predators such as birds. Here, we report the first case of UV reflectance by a tadpole (Ololygon machadoi, Hylidae) and we investigate whether it influences
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Modeling social styles in macaque societies applied to a semi-free-ranging group of Macaca tonkeana Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-15 Ruth Dolado, Elisabet Gimeno, Hélène Meunier, Francesc S. Beltran
Abstract The covariation hypothesis (Thierry 2004) describes conflict management and variations in social structure observed in macaque societies and arranges these species in four dominance styles or grades ranging from egalitarian to despotic. Using an agent-based model (i.e., A-KinGDom), we obtained a set of measurements to quantitatively define the four social styles in captive or semi-free-ranging
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Prenatal manipulation of yolk androgen levels affects egg size but not egg colour in a songbird Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-13 Stefania R. D’Arpa, Jaime Muriel, Raquel Monclús, Diego Gil, Lorenzo Pérez-Rodríguez
Abstract Maternal allocation of androgens to the egg yolk allows mothers to adaptively manipulate offspring phenotype. Increases of egg androgen levels have often been shown to induce sex-specific effects. Some previous studies suggest that females specifically may suffer a fitness reduction after early exposure to high androgen levels. In this study, we explored whether female birds that developed
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Reef manta ray cephalic lobe movements are modulated during social interactions Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-13 Robert J.Y. Perryman, Michelle Carpenter, Eric Lie, Georgy Sofronov, Andrea D. Marshall, Culum Brown
Abstract Reef manta rays (Mobula alfredi) are social elasmobranchs that have structured societies and actively interact with preferred social partners. Being able to detect cues and signals produced by conspecifics is vital in enabling social behavior. Many elasmobranch species communicate via body and fin postures, but it is not yet known if or how mobulid rays communicate or respond to cues produced
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Effect of diet and rearing density on contest outcome and settlement in a field cricket Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-10 Clint D. Kelly, Valérie L’Heureux
Abstract The ability to win fights is expected to be influenced by the rearing and nutritional conditions experienced by individuals. We hypothesized that crowded rearing conditions would foreshadow intense competition for resources in adult male Gryllus firmus (Scudder) field crickets and thus favour greater investment in mandibular weaponry. In line with prediction, males developed relatively larger
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Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-10 Robert E. Rollins, Alexia Mouchet, Gabriele Margos, Lidia Chitimia-Dobler, Volker Fingerle, Noémie S. Becker, Niels J. Dingemanse
Abstract Ecological factors and individual-specific traits affect parasite infestation in wild animals. Ixodid ticks are important ectoparasites of various vertebrate hosts, which include passerine bird species such as the great tit (Parus major). We studied various key ecological variables (breeding density, human disturbance) and phenotypic traits (exploratory behaviour, body condition) proposed
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The impact of turbidity on foraging and risk taking in the invasive Nile tilapia ( Oreochromis niloticus ) and a threatened native cichlid ( Oreochromis amphimelas ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-10 Jonathan D. B. Wing, Toby S. Champneys, Christos C. Ioannou
Abstract Anthropogenic activity can increase water turbidity, changing fish behaviour by reducing visibility. The spread of invasive species is also facilitated by human activity, further increasing the pressure on native species. In two experiments, we measured the foraging efficiency, risk perception and inter-individual consistency of risk-taking (personality variation in boldness) of an invasive
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Infection threat shapes our social instincts Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-10 Peter Kramer, Paola Bressan
We social animals must balance the need to avoid infections with the need to interact with conspecifics. To that end we have evolved, alongside our physiological immune system, a suite of behaviors devised to deal with potentially contagious individuals. Focusing mostly on humans, the current review describes the design and biological innards of this behavioral immune system, laying out how infection
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Specialist predation covaries with colour polymorphism in tawny owls Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-04 Patrik Karell, Kio Kohonen, Katja Koskenpato
Abstract Understanding intraspecific phenotypic variation in prey specialisation can help to predict how long-term changes in prey availability affect the viability of these phenotypes and their persistence. Generalists are favoured when the main food resources are unpredictable compared to specialists, which track the availability of the main prey and are more vulnerable to changes in the main food
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Radical change: temporal patterns of oxidative stress during social ascent in a dominance hierarchy Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-02 Robert Fialkowski, Phillip Aufdemberge, Victoria Wright, Peter Dijkstra
Abstract Dominant individuals have priority access to mates and resources. However, high rank can be costly too, especially when it is maintained by intense agonistic behavior. Oxidative stress has been proposed as a potential cost of social dominance. However, social dominance hierarchies can be dynamic, and few studies have examined the cost of social dominance when males are changing status. We
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Tail autotomy is associated with boldness in male but not female water anoles Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-02 Janelle B. Talavera, Austin Carriere, Lindsey Swierk, Breanna J. Putman
Abstract Sex differences in personality traits, such as boldness, are often driven by differences in life history strategies. Specifically, in a polygynous mating system where males defend territories to acquire mates, it may be beneficial for males to exhibit higher levels of boldness compared to females. However, males may also suffer a higher cost due to their bold behavior. Yet, few studies have
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Composition and compound proportions affect the response to complex chemical signals in a spiny lizard Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-02-01 Cristina Romero-Diaz, Stephanie M. Campos, Morgan A. Herrmann, Helena A. Soini, Milos V. Novotny, Diana K. Hews, Emília P. Martins
Abstract Most animal signals across sensory modalities are multicomponent traits that can be broken down into discrete elements. If different elements are perceived as unique, independent units (elemental perception), instead of as integrated percepts (configural perception), single changes in the presence/absence or the abundance of specific elements of a multicomponent signal may be enough to impact
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Foraging and feeding are independently regulated by social and personal hunger in the clonal raider ant Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-29 Vikram Chandra, Daniel J. C. Kronauer
Abstract Ant colonies must assess the internal states of their members and coordinate their responses to changes in state. One important example of this is the sensing of colony hunger and the regulation of foraging behavior. In many ant species, workers’ own nutritional states at least partially determine how much they forage, and poorly nourished workers usually forage more, while well-nourished
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Tick parasitism impairs contest behavior in the western fence lizard ( Sceloporus occidentalis ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-29 Dylan M. Lanser, Larisa K. Vredevoe, Gita R. Kolluru
Abstract Parasites may impair host behavior in ways that reduce host fitness, especially when access to territories or mates becomes disrupted. Western fence lizards (Sceloporus occidentalis) are a key host to western blacklegged ticks (Ixodes pacificus). Males are highly aggressive during the mating season, competing with rivals through displays of color badges, pushups, and other behaviors. We hypothesized
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Invasion of cane toads ( Rhinella marina ) affects the problem-solving performance of vulnerable predators (monitor lizards, Varanus varius ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-27 Lachlan Pettit, Georgia Ward-Fear, Richard Shine
Abstract Variation in morphological, genetic, or behavioural traits within and among native species can modify vulnerability to impacts from an invasive species. If an individual’s vulnerability depends upon its cognitive performance, we may see adaptive shifts in cognitive traits post-invasion. Commonly, animals with enhanced cognitive abilities perform better in novel tasks, often by prioritising
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Sex-specific signalling of individual personality by a mutual plumage ornament in a passerine Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-26 Attila Fülöp, Dóra Lukács, Péter Imre Fábián, Bianka Kocsis, Gabriella Csöppü, Judit Bereczki, Zoltán Barta
Abstract The significance of colour signals in species with strong sexual dimorphism and/or elaborated visual ornaments is rather well-understood. Less attention has, however, been devoted to study colour signals in species with weak or no apparent sexual dimorphism. In such species, an interesting possibility arises as both sexes can bear the same colour ornament(s) (i.e. sexes are mutually ornamented)
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Territorial males do not discriminate between local and novel plumage phenotypes in a tropical songbird species complex: implications for the role of social selection in trait evolution Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-25 Jorge Enrique Avendaño, Carlos Daniel Cadena
Abstract Whether novel traits involved in animal communication are favored or not by social selection depends on how receivers respond to them. If alternative traits arise at different locations or the same traits are perceived differently, then populations may diverge even when occupying similar environments. Aggressiveness towards bearers of novel versus familiar traits is informative about how male-male
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Age-related division of labor occurs in ants at the earliest stages of colony initiation Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-23 Brittany L Enzmann, Peter Nonacs
Abstract Mature colonies of many social insect species exhibit division of labor (DOL) where individual workers specialize in doing only a subset of the multiple tasks needed to maintain homeostasis. In newly initiated ant colonies, however, the first workers (called nanitics) are few in number and much smaller in size than those in mature colonies. This limited workforce must perform most of the tasks
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Food level and light conditions affect the antipredator behavior in larvae of a stream-breeding amphibian Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-23 Raluca Ioana Băncilă, Rodica Plăiaşu, Florina Stănescu, Benedikt R. Schmidt, Ioana Nae, Mathieu Denoël
Abstract Understanding how long-term changes in environmental conditions influence the way that individuals cope with threats is essential in the context of behavioral adaptation to a rapidly changing world. However, little is known about the behavioral responses to predation risk for individuals that experienced different environmental conditions for extended periods of time, such as food levels and
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Felid bedrooms with a panoramic view: selection of resting sites by Eurasian lynx ( Lynx lynx ) in a karstic landscape Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-22 Lan Hočevar, Teresa Oliveira, Miha Krofel
Abstract Eurasian lynx (Lynx lynx) is a crepuscular-nocturnal carnivore and mostly spends daytime resting. Although resting sites represent an important part of the lynx habitat and can be negatively affected by human activities, it is still poorly known how lynx select these sites, especially in regions with rugged topography characteristic for much of the species’ range. We analysed microscale habitat
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Prey quantity discrimination and social experience affect foraging decisions of rock lizards Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-20 Pablo Recio, Gonzalo Rodríguez-Ruiz, Pilar López, José Martín
Abstract Animals often face situations that require quantity discrimination for decision-making. Differentiating between more and less amounts might be adaptative in different contexts such as in social relationships, navigation, or foraging. However, feeding close to conspecifics might change foraging behavior decisions due to changes in predation risk perception and competition for resources. Here
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Spatiotemporal patterns of wolf, mesocarnivores and prey in a Mediterranean area Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-20 Mariana Rossa, Sandro Lovari, Francesco Ferretti
Abstract Spatial and temporal occurrence can mediate behavioural interactions between apex predators, mesocarnivores and herbivores. Predators should adapt their activity to that of prey, whereas predator avoidance would be expected to influence activity patterns and space use of prey and smaller competitors. We evaluated interspecific spatiotemporal relationships in a prey-rich community including
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Number of callers may affect the response to conspecific mobbing calls in great tits ( Parus major ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-19 Mylène Dutour, Nadine Kalb, Ambre Salis, Christoph Randler
Abstract Numerical competence—the ability to represent, discriminate, and process numerical quantity information—is a widespread cognitive ability in animals that influences survival and reproductive success. Little is known about the role of numerical competence during predator mobbing—when a prey moves toward and harasses a predator. Since being in a larger group dilutes the risk of injury or death
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Association between social factors and gastrointestinal parasite product excretion in a group of non-cooperatively breeding carrion crows Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-19 Claudia A.F. Wascher
Abstract In group-living animals, the social environment is thought to affect the probability of parasite transmission. Here, I investigate relationships between social behaviour and gastrointestinal parasite product excretion in the carrion crow (Corvus corone). Individuals from a population of non-cooperatively breeding carrion crows excreted less samples containing coccidian oocysts when kept in
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Communal roosting shows dynamics predicted by direct and indirect nepotism in chestnut-crowned babblers Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-19 Fumiaki Y. Nomano, James L. Savage, Lee A. Rollins, Simon C. Griffith, Andrew F. Russell
Abstract Family living is a stepping stone to higher-order social structures including cooperatively breeding groups, but understanding why offspring remain with parents by delaying dispersal remains a challenge. One rarely studied aspect of family living is communal huddle roosting, where individuals group together overnight for thermoregulatory and/or anti-predator benefits. Here, we use a PIT-tag
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A condition-dependent male sexual signal predicts adaptive predator-induced plasticity in offspring Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-19 Patrick W. Kelly, David W. Pfennig, Karin S. Pfennig
Abstract The possibility that sexual selection promotes adaptive evolution in variable environments remains controversial. In particular, where the scale of environmental variation results in parents and their offspring experiencing different environmental conditions, such variation is expected to break down associations between adult sexual traits and adaptive offspring traits. However, when adaptive
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Breakdown of the ideal free distribution under conditions of severe and low competition Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-19 Janja Sirovnik, Bernhard Voelkl, Linda Jane Keeling, Hanno Würbel, Michael Jeffrey Toscano
Abstract Under the ideal free distribution (IFD), the number of organisms competing for a resource at different sites is proportional to the resource distribution among sites. The ideal free distribution of competitors in a heterogeneous environment often predicts habitat matching, where the relative number of individuals using any two patches matches the relative availability of resources in those
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Sex, age, molt strategy, and migration distance explain the phenology of songbirds at a stopover along the East Asian flyway Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-16 Jonas Wobker, Wieland Heim, Heiko Schmaljohann
Abstract Sex- and age-specific differences in the timing of migration are widespread among animals. In birds, common patterns are protandry, the earlier arrival of males in spring, and age-differential migration during autumn. However, knowledge of these differences stems mainly from the Palearctic-African and Nearctic-Neotropical flyways, while detailed information about the phenology of migrant birds
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High road mortality during female-biased larval dispersal in an iconic beetle Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-16 Topi K. Lehtonen, Natarsha L. Babic, Timo Piepponen, Otso Valkeeniemi, Anna-Maria Borshagovski, Arja Kaitala
Abstract Animals often disperse from one habitat to another to access mates or suitable breeding sites. The costs and benefits of such movements depend, in part, on the dispersing individuals’ phenotypes, including their sex and age. Here we investigated dispersal and road-related mortality in larvae of a bioluminescent beetle, the European common glow-worm, Lampyris noctiluca, in relation to habitat
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Kin bias and male pair-bond status shape male-male relationships in a multilevel primate society Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-15 Federica Dal Pesco, Franziska Trede, Dietmar Zinner, Julia Fischer
Abstract Male-male social relationships in group-living mammals vary from fierce competition to the formation of opportunistic coalitions or the development of long-lasting bonds. We investigated male-male relationships in Guinea baboons (Papio papio), a species characterized by male-male tolerance and affiliation. Guinea baboons live in a multi-level society, with units of one reproductively active
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Ecological and reproductive drivers of fission-fusion dynamics in chimpanzees ( Pan troglodytes schweinfurthii ) inhabiting a montane forest Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-14 Jaya K. Matthews, Amanda Ridley, Beth A. Kaplin, Cyril C. Grueter
Abstract In species with flexible grouping dynamics (i.e., fission-fusion), party (or subgroup) size is often shaped by available resources. Food resources are thought to limit party size in a range of mammalian species, reflecting a strategy of reducing feeding competition. In montane habitats, where food is highly seasonal, we may expect to see strong effects of ecological constraints on party size
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Climbing up the ladder: male reproductive behaviour changes with age in a long-lived fish Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-12 Marek Šmejkal, Daniel Bartoň, Marek Brabec, Zuzana Sajdlová, Allan T. Souza, Karlos R. Moraes, Kateřina Soukalová, Petr Blabolil, Lukáš Vejřík, Jan Kubečka
Abstract High reproductive performance is the key attribute of male fitness, especially due to the high reproductive skew among the males of most animal species. Males of long-lived iteroparous species have opportunities to improve upon their previous reproductive attempts with increasing age. We collected individual-specific reproductive behaviour and age data on a cyprinid fish, the asp (Leuciscus
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Adaptive tuning of the exploitation-exploration trade-off in four honey bee species Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-07 Allison M. Young, Axel Brockmann, Fred C. Dyer
Abstract Foraging animals continually face the decision of whether to exploit known resources or explore for new ones, a decision with large implications for their fitness. Though animal foraging decisions have been extensively studied, we currently lack a deep understanding of how the exploitation-exploration trade-off has evolved, including how it is shaped by divergent selection pressures between
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Absentee owners and overlapping home ranges in a territorial species Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-07 Lynne A. Isbell, Laura R. Bidner, J. Carter Loftus, Duncan M. Kimuyu, Truman P. Young
Abstract Understanding animals’ use of space can shed valuable light on multiple other aspects of behavioral ecology, including social organization, dispersal, and foraging efficiency. Home ranges, territories, core areas, and home range overlaps have been widely studied, but unless animals are directly observed or are tracked remotely on a fine temporal scale, how they actually use the space available
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Long-term effects of prenatal sound experience on songbird behavior and their relation to song learning Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-06 Andrew C. Katsis, Katherine L. Buchanan, Sonia Kleindorfer, Mylene M. Mariette
Abstract Across multiple taxa, prenatal exposure to rhythmic sound can promote neural development and alter postnatal behavior. In recent studies using zebra finches, stimulating embryos with parental “heat calls” affected their begging behavior as nestlings and song learning as adults. This song learning effect is potentially mediated by broader changes to offspring behavior that affect how they interact
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Locomotion, interactions and information transfer vary according to context in a cryptic fish species Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-06 Stella A. Encel, Timothy M. Schaerf, Joseph T. Lizier, Ashley J. W. Ward
Abstract The behaviour of animals is strongly influenced by the detection of cues relating to foraging opportunity or to risk, while the social environment plays a crucial role in mediating their behavioural responses. Despite this, the role of the social environment in the behaviour of non-grouping animals has received far less attention than in social species. Here, we present the results of an experiment
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Guppies in the puzzle box: innovative problem-solving by a teleost fish Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-06 Alberto Mair, Tyrone Lucon-Xiccato, Angelo Bisazza
Abstract Behavioural innovations allow an individual to solve new problems or find new solutions to an existing problem. Despite being considered an important source of phenotypic plasticity and evolutionary changes, innovative problem-solving remains poorly understood, except in a few species of mammals and birds. We investigated innovative problem-solving performance and its underlying psychological
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Mexican mojarra can dominate non-native convict cichlids even when outnumbered Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-06 Diana Molina, Elsah Arce, Norman Mercado-Silva
Abstract The non-native, aggressive, convict cichlid Amatitlania nigrofasciata is often regarded as a cause for the decline of native Mexican mojarra Cichlasoma istlanum in Mexican rivers. Convict cichlids are assumed dominant in areas they invade. Cooperative territorial defense has been observed in convict cichlids, suggesting that they can dominate Mexican mojarras by coalition. Behavioral observations
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Seasonal shifts in sociosexual behaviour and reproductive phenology in giraffe Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-05 Emma E. Hart, Julian Fennessy, Emma Wells, Simone Ciuti
Abstract Reproductive phenology (timing) is a heritable trait that confers a range of fitness or survival advantages. Giraffe (Giraffa spp.) breed year-round; however, some studies have suggested adaptive birth pulses, where demanding stages of reproduction coincide with seasonal increases in resource availability (phenological match). Here we use 3.5 years of demographic data to investigate the sociosexual
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Extent of threat detection depends on predator type and behavioral context in wild samango monkey groups Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-05 Laura R. LaBarge, Andrew T. L. Allan, Carol M. Berman, Russell A. Hill, Susan W. Margulis
Abstract Detecting predators requires information, and many behavioral and environmental features are predicted to enhance or limit an animal’s ability to learn about potential danger. Animals living in groups are thought to be at an advantage for learning about predator presence, but individual safety also depends on cues spreading from detectors to nondetectors as unsuspecting individuals may still
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Predator presence affects activity patterns but not food consumption or growth of juvenile corkwing wrasse ( Symphodus melops ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-05 Tommy Norin, Josefin Sundin, Rachael Morgan, Anna H. Andreassen, Mirjam Amcoff, Ben Speers-Roesch, Fredrik Jutfelt, Sandra A. Binning, Dominique G. Roche, Timothy D. Clark
Abstract Indirect effects of predators can manifest themselves as changes in prey behaviour and physiology. Given that digestion requires energy, it has been suggested that prey will choose to eat smaller meals under predation risk to reserve a larger portion of the aerobic metabolic scope they have available for energetically demanding tasks more critical than digestion, such as escape. To test this
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Time-accuracy trade-off and task partitioning of hygienic behavior among honey bee ( Apis mellifera ) workers Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-04 Katherine R. Barrs, M. Omar Ani, Kimberlyn K. Eversman, Jonathan T. Rowell, Kaira M. Wagoner, Olav Rueppell
Abstract Behavioral specialization and cooperation are fundamental in the organization and success of social groups. Honey bee workers display hygienic behavior, defined as the detection, uncapping, and removal of unhealthy brood. We present detailed analyses of behavioral specialization and task partitioning among hygienic worker bees, focusing on uncapping of brood cells and removal of the cells’
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Parasitic begging calls of nestmate-evictor common cuckoos stimulate more parental provisions by red-winged blackbirds than calls of nest-sharing brown-headed cowbirds Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-03 Donglai Li, Mark E Hauber
Abstract Parasites often manipulate host behaviors to achieve their own selfish fitness goals. However, the efficiency with which parasitic begging calls solicit foster parental care has not yet been compared across different avian obligate host-brood parasite systems. For example, the begging calls of nestmate-evictor parasites are predicted to solicit sufficient levels of foster parental provisioning
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Not so naïve: endangered mammal responds to olfactory cues of an introduced predator after less than 150 years of coexistence Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-03 Lisa Steindler, Mike Letnic
Abstract Inability to recognise and/or express effective anti-predator behaviour against novel predators as a result of ontogenetic and/or evolutionary isolation is known as ‘prey naiveté’. Natural selection favours prey species that are able to successfully detect, identify and appropriately respond to predators prior to their attack, increasing their probability of escape and/or avoidance of a predator
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Variation of social strategies within and between individual black-tailed prairie dogs ( Cynomys ludovicianus ) during the reproductive season Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-03 Jillian M. Kusch, Jeffrey E. Lane
Abstract Sociality describes the tendency for members of a species to associate in a group based on social attraction. To balance the trade-offs of sociality, the fitness consequences (and therefore proclivity towards being social) should be expected to vary across individuals and within the same individual, across time. We used social network analysis to evaluate the causes and consequences of within-
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Personality and behavioral syndromes in two Peromyscus species: presence, lack of state dependence, and lack of association with home range size Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-03 Victoria Underhill, Gregory G. Pandelis, Jeremy Papuga, Anne C. Sabol, Austin Rife, Tricia Rubi, Susan M. G. Hoffman, Ben Dantzer
Abstract One common theme of adaptive hypotheses for the existence of stable individual differences in behavior (personality) or persistent correlations among behaviors (behavioral syndromes) is an association between intrinsic state (e.g., body size, mass, metabolism) and the behavioral traits of interest. Empiricists are tasked with assessing whether there is an association between intrinsic state
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Effective conspecific communication with aberrant calls in the common cuckoo ( Cuculus canorus ) Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2021-01-02 Csaba Moskát, David M. Taylor, Márk E. Hauber
Abstract The obligate brood parasitic common cuckoo (Cuculus canorus) is best known for its two-note “cu-coo” call, which is uttered repeatedly by adult males during the breeding season. This call advertises the male’s claim for his territory. A rare, aberrant version (“cu-kee”) was discovered in a population of cuckoos in central Hungary. In a playback experiment, we simulated conspecific territorial
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The cost of associating with males for Bornean and Sumatran female orangutans: a hidden form of sexual conflict? Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-30 Julia A. Kunz, Guilhem J. Duvot, Maria A. van Noordwijk, Erik P. Willems, Manuela Townsend, Neneng Mardianah, Sri Suci Utami Atmoko, Erin R. Vogel, Taufiq Purna Nugraha, Michael Heistermann, Muhammad Agil, Tony Weingrill, Carel P. van Schaik
Abstract Sexual coercion, in the form of forced copulations, is relatively frequently observed in orangutans and generally attributed to their semi-solitary lifestyle. High ecological costs of association for females may be responsible for this lifestyle and may have prevented the evolution of morphological fertility indicators (e.g., sexual swellings), which would attract (male) associates. Therefore
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Large body size variation is associated with low communication success in tandem running ants Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-11 Thomas Wagner, Lena Bachenberg, Simone M. Glaser, Avgousta Oikonomou, Melissa Linn, Christoph Grüter
Abstract Diversity in animal groups is often assumed to increase group performance. In insect colonies, genetic, behavioural and morphological variation among workers can improve colony functioning and resilience. However, it has been hypothesized that during communication processes, differences between workers, e.g. in body size, could also have negative effects. Tandem running is a common recruitment
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Split sex ratios and genetic relatedness in a primitively eusocial sweat bee Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-11 Tanya M Pennell, Jeremy Field
Abstract In eusocial Hymenoptera, queens and their helper offspring should favour different sex investment ratios. Queens should prefer a 1:1 investment ratio, as they are equally related to offspring of both sexes (r = 0.5). In contrast, helpers should favour an investment ratio of 3:1 towards the production of female brood. This conflict arises because helpers are more closely related to full sisters
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Chronic exposure to urban noise during the vocal learning period does not lead to increased song frequencies in zebra finches Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-11 Ying Liu, Sue Anne Zollinger, Henrik Brumm
Abstract It has often been observed that birds sing at a higher pitch in cities and other areas that are polluted with intense low-frequency noise. How this pattern arises remains unclear though. One prevailing idea is that songbirds adjust song frequencies to environmental noise profiles through developmental plasticity via vocal learning. However, the conclusions of previous studies testing this
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Better together? How intergroup associations affect energy balance and feeding behavior in wild bonobos Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-10 Stefano Lucchesi, Leveda Cheng, Tobias Deschner, Roger Mundry, Erin G. Wessling, Martin Surbeck
Abstract When the benefits of interacting with out-group members exceed the associated costs, social groups may be expected to be tolerant towards each other. However, in many species exhibiting intergroup tolerance, the nature of benefits gained from intergroup encounters remains unclear. We investigated the potential costs and benefits associated with intergroup associations in bonobos, a species
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Energetic management in wild chimpanzees ( Pan troglodytes verus ) in Taï National Park, Côte d’Ivoire Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-09 Prince D. Valé, Jean-Claude K. Béné, Antoine K. N’Guessan, Catherine Crockford, Tobias Deschner, Inza Koné, Cédric Girard-Buttoz, Roman M. Wittig
Abstract Socioecological theories predict that, in mammals, feeding and mating competitions affect male and female energetic conditions differently but energetic studies investigating both sexes simultaneously are rare. We investigated the effect of socioecological factors on the energetic conditions of male and female western chimpanzees, a long-lived species with high degrees of male-male competition
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Linking ecology and cognition: does ecological specialisation predict cognitive test performance? Behav. Ecol. Sociobiol. (IF 2.277) Pub Date : 2020-12-01 Johanna Henke-von der Malsburg, Peter M. Kappeler, Claudia Fichtel
Variation in cognitive abilities is thought to be linked to variation in brain size, which varies across species with either social factors (Social Intelligence Hypothesis) or ecological challenges (Ecological Intelligence Hypothesis). However, the nature of the ecological processes invoked by the Ecological Intelligence Hypothesis, like adaptations to certain habitat characteristics or dietary requirements
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