Avian migration clocks in a changing world

Journal of Comparative Physiology A, Journal Year: 2024, Volume and Issue: 210(4), P. 691 - 716

Published: Feb. 2, 2024

Abstract Avian long-distance migration requires refined programming to orchestrate the birds’ movements on annual temporal and continental spatial scales. Programming is particularly important as typically anticipate future environmental conditions. Hence, has long been of particular interest in chronobiology. Captivity studies using a proxy, shift nocturnality during seasons (i.e., migratory restlessness), have revealed circannual circadian regulation, well an innate sense direction. Thanks rapid development tracking technology, detailed information from free-flying birds, including annual-cycle data actograms, now allows relating this mechanistic background behaviour wild. Likewise, genomic approaches begin unravel many physiological pathways that contribute migration. Despite these advances, it still unclear how programmes are integrated with specific conditions experienced journey. Such knowledge imminently environments undergo anthropogenic modification. Migratory birds group not dealing changes, yet some species show remarkable adjustments at behavioural genetic levels. Integrated research interdisciplinary collaborations needed understand range responses change, more broadly, functioning timing under natural

Language: Английский

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Factors underlying migratory timing of a seasonally migrating bird

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 12, 2025

Bird migration has fascinated natural historians and scientists for centuries. While the timing of is known to vary by species, population, sex, individual, identifying cause this variation can be challenging. Here we investigate factors underlying migratory in a long-distance bird, Common Yellowthroat (Geothlypas trichas), using population genomic approach. We begin creating map genetic across geographic space (a "genoscape") lcWGS from breeding range. then utilize assays assign 249 wintering 1050 northward migrating birds genetically distinct populations. Additionally, estimate expected spring onset date each predicted region calculate remaining distance birds. Our findings indicate that when structure not factor analysis, it appears captured early season are grounds where arrives later, which contrasts with prior research. However, incorporate into our results align predictions, indicating earlier indeed heading earlier. Further analysis revealed disparity between obtained without attributed fact individuals western group migrate three times west, despite at same latitude. suggest categorizing large numbers groups reveal population-specific patterns shed light on relative contributions different selective forces responsible observed patterns.

Language: Английский

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PolyQ Length of the Clock Gene Is Correlated With Pelagic Larval Duration in the Damselfishes (Pomacentridae), but Within a Species Habitat Availability Counts

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

ABSTRACT Immediately after hatching, larvae of coral reef fish leave their natal environment and begin pelagic larval phase probably to avoid high predation on the reef. The time they spend in open ocean (pelagic duration, PLD), before settlement varies from species depends partly developmental processes that eventually require re‐settlement a polyglutamine region (PolyQ) as part clock gene has been suggested possible candidate could control potentially until settlement, which can be determined by counting rings otoliths. We studied potential relationship between number glutamine repeats 20 pomacentrids PLDs. Most came similar locations, so we avoided impact latitudinal clines PLD. Within gene, found two main distinguishable, variable glutamine‐rich regions (PolyQ Qrich). Considering phylogenetic relationships, PolyQ/Qrich repeat length duration were significantly positively correlated. However, when analyzing this single species, neon damselfish ( Pomacentrus coelestis ), did not find significant correlation PolyQ variation Instead, reduction PLD years with increased habitat availability. Our results show influence timing broader scale, but ecological factors—such availability—can also have impact.

Language: Английский

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Genetics and Evolution of Bird Migration

Annual Review of Animal Biosciences, Journal Year: 2023, Volume and Issue: 12(1), P. 21 - 43

Published: Oct. 31, 2023

Bird migration has long been a subject of fascination for humankind and is behavior that both intricate multifaceted. In recent years, advances in technology, particularly the fields genomics animal tracking, have enabled significant progress our understanding this phenomenon. review, we provide an overview latest advancements genetics bird migration, with particular focus on genomics, examine various factors contribute to evolution behavior, including climate change. Integration research from ecology, can enhance comprehension complex mechanisms involved inform conservation efforts rapidly changing world.

Language: Английский

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Candidate gene polymorphisms are linked to dispersive and migratory behaviour: Searching for a mechanism behind the “paradox of the great speciators”

Journal of Evolutionary Biology, Journal Year: 2023, Volume and Issue: 36(10), P. 1503 - 1516

Published: Sept. 26, 2023

The "paradox of the great speciators" has puzzled evolutionary biologists for over half a century. A speciator requires excellent dispersal propensity to explain its occurrence on multiple islands, but reduced ability high number subspecies. rapid reduction in is often invoked solve this apparent paradox, proximate mechanism not been identified yet. Here, we explored role six genes linked migration and animal personality differences (CREB1, CLOCK, ADCYAP1, NPAS2, DRD4, SERT) 20 South Pacific populations silvereye (Zosterops lateralis) that range from highly sedentary partially migratory, determine if genetic variation associated with migration. We detected associations three genes: (i) partial migrant population, individuals had longer microsatellite alleles at CLOCK gene compared resident same population; (ii) CREB1 displayed average allele lengths recently colonized island (<200 years), evolutionarily older populations. Bayesian broken stick regression models supported length time since colonization; (iii) like CREB1, DRD4 showed polymorphisms between recent old colonizations larger sample needed confirm. SERT, NPAS2 were variable was propensity. association variants silvereyes provides impetus further exploration mechanisms underlying shifts, prospect resolving long-running paradox through lens.

Language: Английский

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Birds of a feather flock together: a dataset for Clock and Adcyap1 genes from migration genetics studies

Scientific Data, Journal Year: 2023, Volume and Issue: 10(1)

Published: Nov. 9, 2023

Abstract Birds in seasonal habitats rely on intricate strategies for optimal timing of migrations. This is governed by environmental cues, including photoperiod. Genetic factors affecting intrinsic timekeeping mechanisms, such as circadian clock genes, have been explored, yielding inconsistent findings with potential lineage-dependency. To clarify this evidence, a systematic review and phylogenetic reanalysis was done. descriptor outlines the methodology sourcing, screening, processing relevant literature data. PRISMA guidelines were followed, ultimately 66 studies, 34 focusing candidate genes at genotype-phenotype interface. Studies clustered using bibliographic coupling citation network analysis, alongside scientometric analyses publication year location. Data retrieved allele data from databases, article supplements, direct author communications. The dataset, version 1.0.2, encompasses 52 species, 46 species Clock gene 43 Adcyap1 gene. featuring over 8000 birds, constitutes most extensive cross-species collection these used studies investigating polymorphisms bird migration.

Language: Английский

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PAReTT: A Python Package for the Automated Retrieval and Management of Divergence Time Data from the TimeTree Resource for Downstream Analyses

Journal of Molecular Evolution, Journal Year: 2023, Volume and Issue: 91(4), P. 502 - 513

Published: April 20, 2023

Abstract Evolutionary processes happen gradually over time and are, thus, considered dependent. In addition, several evolutionary are either adaptations to local habitats or changing habitats, otherwise restricted thereby. Since driving speciation take place within the landscape of environmental temporal bounds, published studies have aimed at providing accurate, fossil-calibrated, estimates divergence times both extant extinct species. Correct calibration is critical towards attributing paleogeography that contributed it. Data from more than 4000 nearly 1,50,000 species available a central TimeTree resource provide opportunities retrieving times, timelines, trees in various formats for most vertebrates. These data greatly enhance ability researchers investigate evolution. However, there limited functionality when studying lists require batch retrieval. To overcome this, PYTHON package termed Python-Automated Retrieval (PAReTT) was created facilitate biologist-friendly interaction with resource. Here, we illustrate use through three examples includes timeline data, tree data. Furthermore, PAReTT previously used meta-analysis candidate genes relationship between migration. The download GitHub as pre-compiled Windows executable, extensive documentation on wiki pages regarding dependencies, installation, implementation functions.

Language: Английский

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Phenotypic correlates between clock genes and phenology among populations of Diederik cuckoo, Chrysococcyx caprius

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(8)

Published: July 31, 2024

Abstract The Diederik cuckoo, Chrysococcyx caprius , is a small Afrotropical bird in the family Cuculidae. It taxonomically related to 13 other species within genus and migratory sub‐Saharan Africa. has unique breeding behaviour of being brood parasite: Breeding pairs lay their eggs nests host hatchlings expel species. aim present study was investigate diversity two circadian clock genes, Clock Adcyap1 probe for relationship between genetic polymorphisms role circannual timing habitat selection (phenology) intra‐African migrants. DNA extracted from blood used PCR amplification sequencing genes 30 cuckoos. Three alleles were detected with similar genotypes individuals Northern Southern ranges while 10 having shorter North longer South. Population analyses, including allele frequency zygosity analysis, showed distinctly higher frequencies most abundant allele, containing polyglutamine repeats, as well high degree homozygosity. In contrast, all heterozygous both regions distinct differences abundance. Comparisons phenology found several phenotypic correlations. This included evidence timing. instances, provided that these effects may be sex‐specific. Given drive some synchronicity environments life cycles birds, they provide valuable insight into fitness facing global challenges climate change, urbanisation expanding agricultural practices.

Language: Английский

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Parallel and convergent evolution in genes underlying seasonal migration

Evolution Letters, Journal Year: 2024, Volume and Issue: 9(2), P. 189 - 208

Published: Nov. 30, 2024

Abstract Seasonal migration has fascinated scientists and natural historians for centuries. While the genetic basis of been widely studied across different taxa, there is little consensus regarding which genomic regions play a role in ability to migrate whether they are similar species. Here, we examine intraspecific variation within between distinct migratory phenotypes songbird. We focus on Common Yellowthroat (Geothlypis trichas) as model system because polyphyletic origin eastern western clades North America provides strong framework understanding extent parallel or convergent evolution genes associated with behavior. First, investigate genome-wide population structure 196 individuals collected from 22 locations breeding range. Then, identify candidate involved seasonal migration, signals putative selection replicate comparisons resident clades. Overall, find wide-spread support at genic level, particularly that mediate biological timekeeping. However, evidence parallelism individual SNP supporting idea multiple pathways modulation migration.

Language: Английский

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Centroid-AME: An open-source software for estimating avian migration trajectories using population centroids movement in the annual cycle

Ecological Informatics, Journal Year: 2024, Volume and Issue: 85, P. 102983 - 102983

Published: Dec. 31, 2024

Language: Английский

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