The multi-dimensional nature of vocal learning

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2021, Номер 376(1836)

Опубликована: Сен. 6, 2021

How learning affects vocalizations is a key question in the study of animal communication and human language. Parallel efforts birds humans have taught us much about how vocal works on behavioural neurobiological level. Subsequent revealed variety cases among mammals which experience also has major influence repertoires. Janik Slater ( Anim. Behav. 60 , 1–11. doi:10.1006/anbe.2000.1410 )) introduced distinction between usage production learning, providing general framework to categorize different types vocalizations. This idea was built by Petkov Jarvis Front. Evol. Neurosci. 4 12. doi:10.3389/fnevo.2012.00012 emphasize more continuous distribution limited complex learners. Yet, with studies empirical data, limits initial frameworks become apparent. We build these refine categorization light advances made since their publication widespread agreement that not binary trait. propose novel classification system, based definitions Slater, deconstructs into dimensions aid understanding mechanisms involved this behaviour. consider can change without considers context specificity timing. identify including copying auditory models (convergence/divergence model sounds, accuracy copying), degree (type breadth learning) timing (when takes place, length time it long retained). grey areas current mechanistic behaviours. Our identifies research needs will help inform evolutionary endeavouring uncover multi-dimensional nature learning. article part theme issue ‘Vocal animals humans’.

Язык: Английский

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Detection ranges of forest bird vocalisations: guidelines for passive acoustic monitoring

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Янв. 9, 2024

Abstract Passive acoustic monitoring has proven to have many advantages for efforts and research activities. However, there are considerations be taken into account regarding the placement of autonomous sound recorders. Detection ranges differ among species in response variable conditions such as weather or location vocalising animals. It is thus important success a project understand, with certain degree confidence, distances at which birds might detected. In two types forests Poland, we played back vocalisations 31 European forest exemplifying different singing characteristics. Based on recordings obtained along 500-m transect, estimated probability detection maximum distance each vocalisation. We broadcasted recording three heights repeated playbacks times during breeding season evaluate effect vegetation growth. Our results revealed that environmental meteorological factors had significant influence both distances. This work provides comprehensive measurements bird can used plan passive Europe, taking traits individual characteristics study area.

Язык: Английский

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Altitudinal variation in oxidative status between breeding and non-breeding seasons in a Neotropical bird

Journal of Ornithology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Язык: Английский

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Sexual dimorphism in immune function and oxidative physiology across birds: The role of sexual selection

Ecology Letters, Год журнала: 2022, Номер 25(4), С. 958 - 970

Опубликована: Фев. 1, 2022

Sex-specific physiology is commonly reported in animals, often indicating lower immune indices and higher oxidative stress males than females. Sexual selection argued to explain these differences, but empirical evidence limited. Here, we explore sex differences immunity, packed cell volume of wild, adult, breeding birds (97 species, 1997 individuals, 14 230 physiological measurements). We show that female are most common across (when bias present), shows no general sex-bias generally male-biased. In contrast with predictions based on sexual selection, male-biased size dimorphism associated measures. dichromatism, mating system parental roles had effect sex-specificity physiology. Importantly, female-biased immunity remained after accounting for indices. conclude cross-species largely unrelated alternative explanations should be explored.

Язык: Английский

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A genomic basis of vocal rhythm in birds

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Апрель 23, 2024

Abstract Vocal rhythm plays a fundamental role in sexual selection and species recognition birds, but little is known of its genetic basis due to the confounding effect vocal learning model systems. Uncovering could facilitate identifying genes potentially important speciation. Here we investigate genomic underpinnings non-learning Pogoniulus tinkerbirds using 135 individual whole genomes distributed across southern African hybrid zone. We find speed associated with two that are also affect human speech, Neurexin-1 Coenzyme Q8A. Models leveraging ancestry reveal these candidate loci impact rhythmic stability, trait linked motor performance which an indicator quality. Character displacement stability suggests possible reinforcement against hybridization, supported by evidence asymmetric assortative mating producing faster, more stable rhythms. Because omnipresent animal communication, identified here may shape birds other vertebrates.

Язык: Английский

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Sexual selection and sexual size dimorphism in animals

Biology Letters, Год журнала: 2021, Номер 17(9), С. 20210251 - 20210251

Опубликована: Сен. 1, 2021

Sexual selection is often considered as a critical evolutionary force promoting sexual size dimorphism (SSD) in animals. However, empirical evidence for positive relationship between on males and male-biased SSD received mixed support depending the studied taxonomic group method used to quantify selection. Here, we present meta-analytic approach accounting phylogenetic non-independence test how standardized metrics of opportunity strength pre-copulatory relate across broad range animal taxa comprising up 95 effect sizes from 59 species. We found that based length measurements was correlated with sex difference but showed weak statistically non-significant Bateman gradient. These findings suggest plays limited role evolution context.

Язык: Английский

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Timing Is Everything: Acoustic Niche Partitioning in Two Tropical Wet Forest Bird Communities

Frontiers in Ecology and Evolution, Год журнала: 2021, Номер 9

Опубликована: Окт. 15, 2021

When acoustic signals sent from individuals overlap in frequency and time, interference signal masking may occur. Under the niche hypothesis (ANH), signaling behavior has evolved to partition space minimize with other calling through selection on structure and/or sender’s ability adjust timing of signals. Alternately, under clustering hypothesis, there is potential benefit convergence synchronization structural or temporal characteristics avian community, organisms produce that more than would be expected by chance. Interactive communication networks also occur, where species living together are likely have songs convergent spectral characteristics. In this study, we examine fine-scale use montane tropical wet forest bird communities Costa Rica Hawai‘i. At multiple recording stations each identified associated recorded signal, measured observed overlap, used null models generate random distributions overlap. We then compared vs. test predictions hypotheses. found a high degree (frequency range) both Hawai‘i, however, as predicted ANH, significantly reduced relative distribution partitioning. There was little support for prediction network segregate across landscape based range their vocalizations. These findings constitute strong competition these communities, resulted primarily partitioning soundscape.

Язык: Английский

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The broken-wing display across birds and the conditions for its evolution

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2022, Номер 289(1971)

Опубликована: Март 30, 2022

The broken-wing display is a well-known and conspicuous deceptive signal used to protect birds' broods against diurnal terrestrial predators. Although commonly associated with shorebirds, it remains unknown how common the behaviour across birds what forces are evolution of display. Here, we use as paradigmatic example study Aves. We show that widespread: has been described in 52 families spread throughout phylogeny, suggesting independently evolved multiple times. Further, evaluated association 16 ecological life-history variables hypothesized be related Eight were found species breeding farther from equator, more dense environments, shorter incubation periods, relatively little nest cover likely perform display, those which only one parent incubates eggs, mob predators altricial or multi-brooded. Collectively, our comprehensive approach identified repeated this thereby providing new insights into behaviours evolve context predator-prey interactions.

Язык: Английский

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The island syndrome in birds

Journal of Biogeography, Год журнала: 2023, Номер 51(9), С. 1607 - 1622

Опубликована: Сен. 16, 2023

Abstract The island syndrome is a widespread biological phenomenon that describes suite of morphological, behavioural, demographic and life‐history changes associated with dwelling. These similar evolutionary responses among disparate groups animals plants represent remarkable case convergent evolution. Among animals, birds are highly suitable group to study the syndrome; they comparatively data‐rich taxon, frequent colonisers, sometimes display extreme adaptations such as loss flight. However, avian literature fragmented, multiple components rarely considered together even though many inextricably linked. We reviewed multi‐species comparative studies, single‐species or population‐level studies anecdotal accounts, summarise assess support for individual birds, identify suites traits should be together. weight evidence patterns in morphology substantial, but more partial various aspects behaviour, life history physiology. Full validation will require less‐studied treated framework, covarying examined an integrated way. An improved description scope pave way understanding its drivers.

Язык: Английский

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The many functions of vocal learning

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2021, Номер 376(1836)

Опубликована: Сен. 6, 2021

The capacity to learn novel vocalizations has evolved convergently in a wide range of species. Courtship songs male birds or whales are often treated as prototypical examples, implying sexually selected context for the evolution this ability. However, functions learned different species far more diverse than courtship, spanning socio-positive contexts from individual identification, social cohesion, advertising pair bonds, well agonistic such territorial defence, deceptive alarm calling luring prey. Here, we survey usages and proposed signals, build framework considering vocal learning capacities that extends beyond sexual selection. For each function can be identified provide examples using unlearned signals accomplish same goals. We use comparisons generate hypotheses concerning when is adaptive, given particular suite socio-ecological traits. Finally, identify areas uncertainty where improved understanding would allow us better test these hypotheses. Considering broad potential will yield richer appreciation its narrow focus on few This article part theme issue ‘Vocal animals humans’.

Язык: Английский

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