Preprints
Filtering by Subject: Behavior and Ethology
Function of a multimodal signal: a multiple-hypotheses test using an electromechanical robot
Published: 2020-07-14
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences
1. Many animal species communicate using multimodal signals, which are composed of two or more components emitted and interpreted through different sensory modalities. The main types of selective pressures leading to the evolution of multimodal signals are: (1) content-based, when combined components convey information about the signaller, (2) efficacy-based, when combined components increase the [...]
Do the ages of parents or helpers affect offspring fitness in a cooperatively breeding bird?
Published: 2020-06-16
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences
Age-related changes in either the phenotypes or genotypes of care-givers can impact juvenile performance. However, rarely in wild populations have germline and non-germline transgenerational effects of ageing been separately quantified. In cooperatively breeding animals, in addition to parental ages, the age of ‘helpers’ attending the nest may also impact juvenile performance. Using a wild [...]
Climate change as a catalyst of social evolution
Published: 2020-05-08
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences
Anthropogenic climatic change will be a major factor shaping natural populations over the foreseeable future. The scope of this issue has spawned the integrative field of global change biology, which is chiefly concerned with identifying vulnerabilities of natural systems to climate change and integrating these into models of biodiversity loss. Meanwhile, there remains considerable latitude for [...]
Epicuticular compounds of Protopiophila litigata (Diptera: Piophilidae): identification and sexual selection across two years in the wild
Published: 2020-03-18
Subjects: Behavior and Ethology, Biochemistry, Biophysics, and Structural Biology, Ecology and Evolutionary Biology, Entomology, Evolution, Life Sciences
The epicuticular compounds (ECs) of insects serve both to waterproof the cuticle and, in many taxa, as pheromones that are important for various social interactions including mate choice within populations. However, ECs have not been individually identified in many species and most studies of their role in mate choice have been performed in a laboratory setting. Here we newly identify and [...]
Poor nutritional condition promotes high-risk behaviours: A systematic review and meta-analysis
Published: 2020-03-18
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences
Animal behaviour can lead to varying levels of risk, and an individual’s physical condition can alter the potential costs and benefits of undertaking risky behaviours. How risk-taking behaviour depends on condition is subject to contrasting hypotheses. The asset protection principle proposes that individuals in better condition should be more risk averse, as they have higher future reproductive [...]
Pre-maturation social experience affects female reproductive strategies and offspring fitness in a highly polyandrous insect
Published: 2020-03-17
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences, Other Ecology and Evolutionary Biology
The pre-maturation social environment experienced by females may affect their post-maturation reproductive strategies, including mating preferences and investment in offspring. Whether the pre-maturation social environment also affects other aspects of females’ reproductive strategies, such as the degree of polyandry and post-copulatory decisions, is still an open question. To address this [...]
Development time mediates the effect of larval diet on ageing and mating success of male antler flies in the wild
Published: 2020-03-16
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Entomology, Evolution, Life Sciences, Population Biology
High-quality developmental environments often improve individual performance into adulthood, but allocating toward early-life traits, such as growth, development rate, and reproduction, may lead to trade-offs with late life performance. It is therefore uncertain how a rich developmental environment will affect the ageing process (senescence), particularly in wild insects. To investigate the [...]
Infected or informed? Social structure and the simultaneous transmission of information and infectious disease
Published: 2020-03-06
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Immunology and Infectious Disease, Life Sciences
Social interactions present opportunities for both information and infection to spread through populations. Social learning is often proposed as a key benefit of sociality, while disease epidemics are proposed as a major cost. Multiple empirical and theoretical studies have demonstrated the importance of social structure for either information or infectious disease, but rarely in combination. We [...]
Intergroup food transfers in wild golden lion tamarins (Leontopithecus rosalia)
Published: 2020-03-01
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Zoology
Transfers of food between adults are uncommon in primates. Although golden lion tamarins (Leontopithecus rosalia), are unique among primates in the extent of food transfers, reports of food transfers between adults have so far been restricted to captive or reintroduced individuals. Here, I report the first six recorded events of adult-adult food transfers between individuals belonging to [...]
Comparing ecological and evolutionary variability within datasets
Published: 2020-01-28
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Genetics and Genomics, Life Sciences, Other Ecology and Evolutionary Biology, Other Genetics and Genomics, Social and Behavioral Sciences
Many key questions in evolutionary ecology require the use of variance ratios such as heritability, repeatability, and individual resource specialization. These ratios allow to understand how phenotypic variation is structured into genetic and non-genetic components, to identify how much organisms vary in the resources they use or how functional traits structure species communities. Understanding [...]
Dunnock social status correlates with sperm speed, but fast sperm does not always equal high fitness
Published: 2020-01-24
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences
Sperm competition theory predicts that males should modulate sperm investment according to their social status. Sperm speed (one proxy of sperm quality) also influences the outcome of sperm competition because fast sperm cells may fertilize eggs before slow sperm cells. We evaluated whether the social status of males predicted their sperm speed in a wild population of dunnocks (Prunella [...]
Cultural conformity and persistence in the context of differing site fidelity
Published: 2019-12-18
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences
Animal culture often shows geographic structure, with nearby individuals sharing more cultural features than individuals further apart. However, spatial extent of cultural features, along with the degree of conformity to local cultures, vary within and among species. Further, rates of cultural change presumably also vary, though documentation of temporal variability lags behind documentation of [...]
Post-release exploration and diel activity of hatchery, wild and crossbred strain brown trout in semi-natural streams
Published: 2019-12-11
Subjects: Animal Sciences, Aquaculture and Fisheries Life Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences
Behaviours that are adaptive in captivity may be maladaptive in the wild and hence compromise after-release survival of hatchery fish. Understanding behavioural differences displayed straight after the release could help improving hatchery protocols and developing behavioural tests for assessing the fitness of fish reared for releases. We characterized the post-release behaviour in two [...]
Behavioral Modification of Eastern Hoolock Gibbon in Non-Protected Fragmented Rainforest Patches of North Eastern Himalayas
Published: 2019-12-06
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Other Life Sciences, Zoology
Presence of Eastern Hoolock Gibbon (Hoolock leuconydes) was confirmed recently in and around Mehao Wildlife Sanctuary, Arunachal Pradesh, where the last remnant rainforest region of Eastern Himalaya still exists. A total of 13 groups of Eastern Hoolock Gibbon were located in this Lower Dibang valley in the outskirts and periferi of Mehao WLS where they coexist with humans at the non-protected [...]
Sex- and context-specific associations between personality and a measure of fitness but no link with life history traits
Published: 2019-11-22
Subjects: Behavior and Ethology, Biology, Ecology and Evolutionary Biology, Evolution, Life Sciences
The pace of life syndrome hypothesis posits that personality traits (i.e., consistent individual differences in behaviour) are linked to life history and fitness. Specifically, fast-paced individuals are predicted to be proactive (i.e., active and aggressive) with an earlier age at first reproduction, a shorter lifespan, and a higher fecundity than slow-paced individuals. Environmental conditions [...]