Evolution of the germline mutation rate across vertebrates

Nature, Год журнала: 2023, Номер 615(7951), С. 285 - 291

Опубликована: Март 1, 2023

The germline mutation rate determines the pace of genome evolution and is an evolving parameter itself1. However, little known about what its evolution, as most studies rates have focused on single species with different methodologies2. Here we quantify across vertebrates by sequencing comparing high-coverage genomes 151 parent-offspring trios from 68 mammals, fishes, birds reptiles. We show that per-generation varies among a factor 40, being higher for males than females in mammals birds, but not reptiles fishes. generation time, age at maturity species-level fecundity are key life-history traits affecting this variation species. Furthermore, long-term effective population sizes tend to lower per generation, providing support drift barrier hypothesis3. exceptionally high yearly domesticated animals, which been continually selected including shorter times, further importance time rates. Overall, our comparative analysis pedigree-based provides ecological insights vertebrates.

Язык: Английский

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An overview of speciation and species limits in birds

Ornithology, Год журнала: 2021, Номер 138(2)

Опубликована: Апрель 6, 2021

Abstract Accurately determining avian species limits has been a challenge and work in progress for most of century. It is fascinating but difficult problem. Under the biological concept, only lineages that remain essentially independent when they are sympatry clearly species. Otherwise, there no clear line yet found marks pair diverging (e.g., allopatry) become different enough to warrant full status. Also, with more data, often require reevaluation. The process divergence speciation itself very complex focus intense research. Translating what we understand into taxonomic names can be challenging. A series issues important. Single-locus criteria unlikely convincing. Genetic independence not requirement, degree (gene flow) needs considered opportunity gene flow complete. Time-based (limits determined by time separation) unsatisfactory, though integrating effectively our datasets warranted. We need disentangle data signal due neutral processes vs. selection prioritize latter as main driver speciation. Assortative mating also likely an adequate criterion limits. Hybridization important than ever, condition being treated evenly taxonomy: evolutionary trysts 2 or stuck together through just short over long periods. Comparative methods use occurs between good contact infer among allopatric forms gold standard, inaccurate controversial. Species-level taxonomy birds unsettled some time. While study never exciting dynamic, silver bullet delimitation, nor it will ever one. Careful using integrative comparative framework promising way forward.

Язык: Английский

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

Ibis, Год журнала: 2023, Номер 166(2), С. 357 - 385

Опубликована: Окт. 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.

Язык: Английский

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A low-tech, cost-effective and efficient method for safeguarding genetic diversity by direct cryopreservation of poultry embryonic reproductive cells

eLife, Год журнала: 2022, Номер 11

Опубликована: Янв. 25, 2022

Chickens are an important resource for smallholder farmers who raise locally adapted, genetically distinct breeds eggs and meat. The development of efficient reproductive technologies to conserve regenerate chicken safeguards existing biodiversity secures poultry genetic resources climate resilience, biosecurity, future food production. majority the over 1600 raised in low lower middle income countries under resource-limited, small-scale production systems, which necessitates a low-tech, cost-effective means conserving diversity is needed. Here, we validate simple biobanking technique using cryopreserved embryonic gonads. gonads quickly isolated, visually sexed, pooled by sex, cryopreserved. Subsequently, stored material thawed dissociated before injection into sterile host embryos. By GFP RFP-labelled donor gonadal cells Sire Dam Surrogate mating, demonstrate that chicks deriving entirely from male female germ hatched. This technology will enable ongoing efforts both commercial farmers, preserve at research facilities.

Язык: Английский

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Male secreted short glycoproteins link sperm competition to the reproductive isolation of species

Current Biology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Good sperm producers are more likely to participate in incubation in the Asian barn swallow Hirundo rustica gutturalis

Behavioural Processes, Год журнала: 2025, Номер 226, С. 105173 - 105173

Опубликована: Март 1, 2025

Язык: Английский

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Evolutionary Aspects of Sperm Physiology and Its Assessment

Methods in molecular biology, Год журнала: 2025, Номер unknown, С. 29 - 41

Опубликована: Янв. 1, 2025

Язык: Английский

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Fifty years of sperm competition: the structure of a scientific revolution

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2020, Номер 375(1813), С. 20200060 - 20200060

Опубликована: Окт. 18, 2020

Язык: Английский

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Ranking parameters driving siring success during sperm competition in the North African houbara bustard

Communications Biology, Год журнала: 2023, Номер 6(1)

Опубликована: Март 22, 2023

Abstract Sperm competition is a powerful force driving the evolution of ejaculate and sperm traits. However, outcome depends on many traits that extend beyond quality. Here, we study male North African houbara bustards ( Chlamydotis undulata ) competing for egg fertilization, after artificial insemination, with aim to rank importance 14 parameters as drivers siring success. Using machine learning approach, show independent quality (i.e., insemination order, delay between laying) are most important predictors Traits describing intrinsic number in ejaculate, mass motility index) also positively associated success, but their contribution explaining much lower than order. Overall, this analysis shows males mating at last position sequence have best chance win fertilization. This raises question female behavior determinant

Язык: Английский

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Sneaky copulations by subordinate males suggest direct fitness benefits from male–male associations in spotted bowerbirds (Ptilonorhynchus maculatus)

Ethology, Год журнала: 2022, Номер 129(1), С. 55 - 61

Опубликована: Окт. 9, 2022

Male spotted bowerbirds (

Язык: Английский

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