The causes and implications of sex role diversity in shorebird breeding systems

Ibis, Journal Year: 2023, Volume and Issue: 166(2), P. 357 - 385

Published: Oct. 11, 2023

Males and females often exhibit different behaviours during mate acquisition, pair‐bonding parenting, a convenient label to characterize these is sex role. The diverse roles that male female shorebirds (plovers, sandpipers allies) in mating parenting have played key role advancing mainstream theories avian ecology behavioural biology including sexual selection, conflict parental cooperation. Recent advances shorebird research also highlighted the significance of social environment driving by linking adult ratio with breeding behaviour population demography. Here we review using as an ecological model system. We identify knowledge gaps argue untapped potential accelerate fields evolutionary genomics, movement ecology, networks environmental changes. Future studies will benefit from individual‐based monitoring advanced tracking technologies, multi‐team collaborations are facilitated standardized data collection methodologies across species field. These not only contribute our understanding reproductive strategies, but they knock‐on effects on predicting resilience changes prioritizing for conservation.

Language: Английский

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Endless forms of sexual selection

PeerJ, Journal Year: 2019, Volume and Issue: 7, P. e7988 - e7988

Published: Nov. 5, 2019

In recent years, the field of sexual selection has exploded, with advances in theoretical and empirical research complementing each other exciting ways. This perspective piece is product a “stock-taking” workshop on conflict. Our aim to identify deliberate outstanding questions stimulate discussion rather than provide comprehensive overview entire field. These are organized into four thematic sections we deem essential First focus evolution mate choice mating systems. Variation quality can generate both competition opposite sex, implications for Limitations may dictate importance direct vs. indirect benefits decisions consequently, systems, especially regard polyandry. Second, how sender receiver mechanisms shape signal design. Mediation honest content likely depends integration temporally variable social physiological costs that challenging measure. We view neuroethology sensory cognitive biases as main key form ‘aesthetic sense’ proposed by Darwin. Since bias sufficient initiate drive ornament or armament exaggeration, without genetically correlated even coevolving receiver, this be appropriate ‘null model’ selection. Thirdly, genetic architecture sexually selected traits. Despite modern molecular techniques, number identity genes underlying performance, display secondary traits remains largely unknown. In-depth investigations basis dimorphism context long-term studies will reveal constraints trajectories trait evolution. Finally, conflict drivers speciation. Population divergence speciation often influenced an interplay between natural The extent which promotes counteracts population vary depending well covariance local adaptation. Additionally, post-copulatory processes, such against heterospecific sperm, influence propose efforts resolve these themes catalyze conceptual progress selection, offer potential avenues advance progress.

Language: Английский

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Why study plovers? The significance of non-model organisms in avian ecology, behaviour and evolution

Journal of Ornithology, Journal Year: 2019, Volume and Issue: 160(3), P. 923 - 933

Published: May 27, 2019

Shorebirds (sandpipers, plovers and allies) are some of the most charismatic animals that breed on all continents inhabit diverse habitats, their ecology, behaviour evolution have attracted much attention ever since work Charles Darwin. Here I summarise insights from 30 years research shorebird biology to illustrate contributions these four fields: breeding system evolution, sex ratio research, speciation biodiversity conservation. Two major conclusions can be drawn insights. First, as shorebirds live in a variety habitats exhibit puzzling adaptations environments, studying life histories provides novel into emergence maintenance organismal diversity. Second, uncover patterns processes it is both important stimulating combine different methods, detailed single-species studies with multi-species comparative approach. My main thesis curiosity-driven natural history non-conventional model organisms fundamental evolution. also argue scientific funding should follow Goldilocks principle: not too little, much, just right amount.

Language: Английский

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Genetic, phenotypic and ecological differentiation suggests incipient speciation in two Charadrius plovers along the Chinese coast

BMC Evolutionary Biology, Journal Year: 2019, Volume and Issue: 19(1)

Published: June 27, 2019

Speciation with gene flow is an alternative to the nascence of new taxa in strict allopatric separation. Indeed, many have parapatric distributions at present. It often unclear if these are secondary contacts, e.g. caused by past glaciation cycles or manifestation speciation flow, which hampers our understanding how different forces drive diversification. Here we studied genetic, phenotypic and ecological aspects divergence a pair incipient shorebird species, Kentish (Charadrius alexandrinus) White-faced Plovers (C. dealbatus), shorebirds breeding ranges along Chinese coast. We assessed based on molecular markers modes inheritance quantified morphometric, dietary climatic niches. Our integrative analyses revealed small moderate levels genetic distinctiveness symmetric across contact area The two species diverged approximately half million years ago dynamic isolation occurring due cycling sea level changes between Eastern Southern China Sea mid-late Pleistocene. found evidence character displacement niche differentiation invoking role selection facilitating despite flow. These findings imply that ecology can indeed counter through divergent thus contributes plovers. Furthermore, study highlights importance using datasets reveal evolutionary history assist inference mechanisms speciation.

Language: Английский

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Country‐wide genetic monitoring over 21 years reveals lag in genetic recovery despite spatial connectivity in an expanding carnivore (Eurasian otter, Lutra lutra) population

Evolutionary Applications, Journal Year: 2022, Volume and Issue: 15(12), P. 2125 - 2141

Published: Nov. 15, 2022

Numerous terrestrial mammal species have experienced extensive population declines during past centuries, due largely to anthropogenic pressures. For some species, including the Eurasian otter (

Language: Английский

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Large-scale sampling of potential breeding sites in male ruffs

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2038)

Published: Jan. 1, 2025

The traditional narrative of the life cycle migratory birds is that individuals perform long-distance movements between a breeding and wintering site, but are largely resident at those sites. Although this pattern may apply to socially monogamous species with biparental care, in polygamous systems, sex only provides gametes benefit from continuing move sample several potential sites during single season. Such behaviour would blur distinction migration breeding. We used satellite telemetry study season males ruff Calidris pugnax , lekking wader polygynous mating system female-only parental care. Ruffs have unique life-history, three distinct genetically determined male strategies: aggressive ‘independents’, submissive ‘satellites’, female-mimicking ‘faeders’. Within season, visited up 23 (median: 11) travelled 9029 km 4435 km) covering considerable part their known range. All morphs displayed site sampling, indicating they might gain similar benefits behaviour. Our findings suggest large-scale range sampling be common feature care strong male-male competition.

Language: Английский

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Factors associated with breeding site fidelity in a nomadic shorebird with extremely low local return rates

Animal Behaviour, Journal Year: 2025, Volume and Issue: 223, P. 123151 - 123151

Published: March 23, 2025

Language: Английский

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Long-distance seasonal migration to the tropics promotes genetic diversity but not gene flow in boreal birds

Nature Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: May 20, 2025

Language: Английский

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Sex‐biased breeding dispersal is predicted by social environment in birds

Ecology and Evolution, Journal Year: 2018, Volume and Issue: 8(13), P. 6483 - 6491

Published: June 21, 2018

Abstract Sex‐biased dispersal is common in vertebrates, although the ecological and evolutionary causes of sex differences are debated. Here, we investigate both natal breeding distances using a large dataset on birds including 86 species from 41 families. Using phylogenetic comparative analyses, whether sex‐biased associated with sexual selection, parental roles, adult ratio (ASR), or mortality. We show that neither intensity nor extent bias care was dispersal. However, related to social environment since male‐biased ASRs were female‐biased Male‐biased Sex mortality not consistently These results may indicate rare has stronger tendency disperse order find new mating opportunities. Alternatively, higher more dispersive could account for biased ASRs, our do give strong support this explanation. Whichever case, findings improve understanding consequences Since direction causality yet known, call future studies identify causal relationships linking mortality, dispersal, ASR.

Language: Английский

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Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation

Ecology and Evolution, Journal Year: 2018, Volume and Issue: 8(16), P. 8019 - 8029

Published: July 17, 2018

Abstract Solar radiation is an important driver of animal coloration, not only because the effects coloration on body temperature but also may protect from deleterious UV radiation. Indeed, dark , increase risk overheating. In addition, effect thermoregulation should change with egg size, as smaller eggs have higher surface‐volume ratios and greater convective coefficients than larger eggs, so that small can dissipate heat quickly. We tested whether reflectance eggshells, spottiness, size ground‐nesting Kentish plover Charadrius alexandrinus affected by maximum ambient solar at breeding sites. measured reflectance, both in human visible spectrum, photographs a museum collection eggshells. Eggshells lower (darker) were found latitudes. However, southern localities where very high, eggshells are coloration. Eggshell had no significant relationship temperature. Spotiness was site‐specific. Small tended to be light‐colored. Thermal constraints drive observed spatial variation eggshell which lighter latitudes diminish overheating result levels high radiation, likely embryos more intense Egg exhibited relation through surface area‐to‐volume cooling rates eggs. Therefore, differential functions shape latitudinal variations appearance plover.

Language: Английский

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