A long winter for the Red Queen: rethinking the evolution of seasonal migration

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2018, Volume and Issue: 94(3), P. 737 - 752

Published: Nov. 4, 2018

Abstract This paper advances an hypothesis that the primary adaptive driver of seasonal migration is maintenance site fidelity to familiar breeding locations. We argue therefore principally adaptation for geographic persistence when confronted with seasonality – analogous hibernation, freeze tolerance, or other organismal adaptations cyclically fluctuating environments. These ideas stand in contrast traditional views bird evolved as dispersal strategy exploiting new areas and avoiding competitors. Our synthesis supported by a large body research on avian biology demonstrates reproductive benefits breeding‐site fidelity. Conceptualizing places emphasis understanding evolutionary trade‐offs between migratory behaviour environments both within across species. Seasonality‐induced departures from areas, coupled maintaining fidelity, also provide mechanism explaining evolution agnostic origin lineages (i.e. temperate tropical). Thus, our framework reconciles much conflict previous historical biogeography Although range change fluidly rapidly many populations, we loss plasticity via canalization overlooked aspect dynamics helps explain idiosyncratic distributions routes long‐distance migrants. synthesis, which revolves around insight organisms travel long distances simply stay same place, provides necessary context biogeographic patterns well ecological connectivity non‐breeding

Language: Английский

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Steroid hormones in the aquatic environment

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 792, P. 148306 - 148306

Published: June 16, 2021

Steroid hormones are extremely important natural in all vertebrates. They control a wide range of physiological processes, including osmoregulation, sexual maturity, reproduction and stress responses. In addition, many synthetic steroid widespread general use, both as human veterinary pharmaceuticals. Recent advances environmental analytical chemistry have enabled concentrations rivers to be determined. Many different hormones, synthetic, transformation products, been identified quantified, demonstrating that they aquatic contaminants. Laboratory ecotoxicology experiments, mainly conducted with fish, but also amphibians, shown some can adversely affect when present the water at low concentrations: even sub-ng/L. research has demonstrated mixtures inhibit each individual hormone is concentration below which it would not invoke measurable effect on its own. Limited field studies supported conclusions laboratory may pollutants significant concern. Further required identify main sources entering environment, better describe complex now known ubiquitously present, determine impacts environmentally-realistic vertebrates, especially fish. Only once completed robust risk assessment concluded.

Language: Английский

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Extreme elevational migration spurred cryptic speciation in giant hummingbirds

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(21)

Published: May 13, 2024

The ecoevolutionary drivers of species niche expansion or contraction are critical for biodiversity but challenging to infer. Niche may be promoted by local adaptation constrained physiological performance trade-offs. For birds, evolutionary shifts in migratory behavior permit the broadening climatic into varied, seasonal environments. Broader niches can short-lived if diversifying selection and geography promote speciation subdivision across gradients. To illuminate breadth dynamics, we ask how “outlier” defy constraints. Of 363 hummingbird species, giant ( Patagona gigas ) has broadest a large margin. test roles behavior, trade-offs, genetic structure maintaining its exceptional breadth, studied movements, respiratory traits, population genomics. Satellite light-level geolocator tracks revealed an >8,300-km loop migration over Central Andean Plateau. This included 3-wk, ~4,100-m ascent punctuated upward bursts pauses, resembling acclimatization routines human mountain climbers, accompanied surging blood-hemoglobin concentrations. Extreme was deep genomic divergence from high-elevation resident populations, with decisive postzygotic barriers gene flow. two forms occur side-by-side differ almost imperceptibly size, plumage, traits. taxon is world’s largest hummingbird, previously undiscovered that describe name here. hummingbirds demonstrate limits on breadth: when ancestral expanded due evolution (or loss) extreme followed.

Language: Английский

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Single-molecule, full-length transcript sequencing provides insight into the extreme metabolism of the ruby-throated hummingbird Archilochus colubris

GigaScience, Journal Year: 2018, Volume and Issue: 7(3)

Published: Feb. 15, 2018

Abstract Background Hummingbirds oxidize ingested nectar sugars directly to fuel foraging but cannot sustain this use during fasting periods, such as the night or long-distance migratory flights. Instead, hummingbirds switch oxidizing stored lipids that are derived from sugars. The hummingbird liver plays a key role in moderating energy homeostasis and remarkable capacity for switching. Additionally, is principle location of de novo lipogenesis, which can occur at exceptionally high rates, premigratory fattening. Yet understanding how tissue whole organism moderates turnover hampered by lack information regarding relevant enzymes differ sequence, expression, regulation. Findings We generated transcriptome using PacBio full-length cDNA sequencing (Iso-Seq), yielding 8.6Gb data, 2.6M reads 4 different size fractions. analyzed data SMRTAnalysis v3.1 Iso-Seq pipeline, then clustered isoforms into gene families generate contigs Cogent. performed orthology analysis identify closely related sequences between our other avian human sets. Finally, we examined homology critical lipid metabolism genes genomes. Conclusions confirmed levels sequence divergence within lipogenic enzymes, suggesting probability adaptive divergent function hepatic pathways. Our results leverage cutting-edge technology novel bioinformatics pipeline provide first direct look incredible organism.

Language: Английский

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Bird migration within the Neotropics

Ornithology, Journal Year: 2020, Volume and Issue: 137(4)

Published: July 31, 2020

Abstract Although the migration ecology of birds breeding in Neotropics is still poorly studied relative to that their counterparts at north-temperate latitudes, studies conducted over last 2 decades have revealed much more common and diverse than previously thought. These identified dozens species migrate latitudinally within South America, altitudinally various mountain ranges, between Caribbean islands, longitudinally across ecosystems such as Amazon rainforest. Advances miniaturized tracking technologies, enormous citizen science databases, powerful analytical approaches provide an unprecedented ability detect evaluate temporally spatially fine-scale patterns, greatly facilitating study migratory patterns tropical regions. We argue a renewed effort research on short- long-distance bird will allow (1) comparative identify emergent properties behavior, (2) identification convergent or unique mechanistic drivers ecological settings, (3) formulation effective conservation management plans for Neotropical birds, (4) predictions about how respond large-scale climatic changes Neotropics. Here, we review current state knowledge migration, with focus America. specifically examine similarities differences observed breed Nearctic compared highlight key future questions.

Language: Английский

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Fifty-eighth supplement to the American Ornithological Society'sCheck-list of North American Birds

Ornithology, Journal Year: 2017, Volume and Issue: 134(3), P. 751 - 773

Published: July 1, 2017

p. xii.The exclusion of Greenland from the AOS geographical area is reversed.Under section Geographic Coverage, change reference to eastern boundary ''the between Canada and Greenland'' ''Greenland.'' geographically, physiographically, tectonically part North America, was considered coverage first (AOU 1886) through fifth editions Check-list 1957).In 6th edition 1983), however, removed area, seven species included only on basis records were transferred hypothetical list (Appendix B in that edition).We return six these (Tadorna ferruginea, Rallus aquaticus, Charadrius veredus, Corvus frugilegus, C. cornix, Anthus pratensis; seventh species, Platalea leucorodia, returned Chesser et al. 2010) Appendix main list, some with updated taxonomy, add three new (Sylvia atricapilla, Zoothera aurea, Acanthis cabaret) additional (Boertmann 1994) appropriate sequence taxonomic below.In addition, four already (Anser brachyrhynchus, Pluvialis apricaria, Turdus pilaris, T. iliacus) are no longer accidental, due breeding Greenland, code '' A'' their names.pp.

Language: Английский

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Macroevolution of the plant–hummingbird pollination system

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(5), P. 1831 - 1847

Published: May 5, 2024

ABSTRACT Plant–hummingbird interactions are considered a classic example of coevolution, process in which mutually dependent species influence each other's evolution. Plants depend on hummingbirds for pollination, whereas rely nectar food. As step towards understanding this review focuses the macroevolutionary consequences plant–hummingbird interactions, relatively underexplored area current literature. We synthesize prior studies, illustrating origins and dynamics hummingbird pollination across different angiosperm clades previously pollinated by insects (mostly bees), bats, passerine birds. In some cases, crown age pre‐dates plants they pollinate. other plant groups transitioned to early establishment bird group Americas, with build‐up both diversities coinciding temporally, hence suggesting co‐diversification. Determining what triggers shifts away from remains major open challenge. The impact diversification is complex, many tropical lineages experiencing increased after acquiring flowers that attract hummingbirds, others no change or even decrease rates. This mixed evidence suggests extrinsic intrinsic factors, such as local climate isolation, important covariables driving adapted pollination. To guide future we discuss mechanisms contexts under clade individual (e.g. traits, foraging behaviour, degree specialization), could conclude commenting how signals mutualism relate highlighting unbalanced focus side interaction, advocating use species‐level interaction data studies.

Language: Английский

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Are hummingbirds generalists or specialists? Using network analysis to explore the mechanisms influencing their interaction with nectar resources

PLoS ONE, Journal Year: 2019, Volume and Issue: 14(2), P. e0211855 - e0211855

Published: Feb. 27, 2019

Mutualistic interactions are powerful drivers of biodiversity on Earth that can be represented as complex interaction networks vary in connection pattern and intensity. One the most fascinating mutualisms is between hummingbirds plants they visit. We conducted an exhaustive search for articles, theses, reports, personal communications with researchers (unpublished data) documenting hummingbird visits to flowers nectar-rewarding plants. Based information gathered from 4532 292 species 1287 plant species, we built network nine clades 100 families used by nectar resources at a continental scale. explored architecture, including phylogenetic, morphological, biogeographical, distributional information. As expected, their was heterogeneous nested, but not modular. When incorporated ecological historical nodes, found generalization gradient morphology patterns. The recently diversified North America acted generalist nodes visited ornithophilous, intermediate non-ornithophilous morphologies, connecting high diversity families. This favored morphologies (bill, wing, body size) low niche conservatism these compared oldest South America. Our work first effort exploring hummingbird-plant mutualistic scale using offering alternative approach evolutionary factors explain plant-animal large

Language: Английский

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The conquering of North America: dated phylogenetic and biogeographic inference of migratory behavior in bee hummingbirds

BMC Evolutionary Biology, Journal Year: 2017, Volume and Issue: 17(1)

Published: June 5, 2017

Geographical and temporal patterns of diversification in bee hummingbirds (Mellisugini) were assessed with respect to the evolution migration, critical for colonization North America. We generated a dated multilocus phylogeny Mellisugini based on dense sampling using Bayesian inference, maximum-likelihood maximum parsimony methods, reconstructed ancestral states distributional areas framework migratory behavior parsimony, re-rooting methods. All phylogenetic analyses confirmed monophyly inclusion Atthis, Calothorax, Doricha, Eulidia, Mellisuga, Microstilbon, Myrmia, Tilmatura, Thaumastura. consists two clades: (1) South American species (including Tilmatura dupontii), (2) distributed Central America Caribbean islands. The second clade four subclades: Mexican (Calothorax, Doricha) (Archilochus, Calliphlox, Mellisuga) sheartails, Calypte, Selasphorus (incl. Atthis). Coalescent-based dating places origin mid-to-late Miocene, crown ages most subclades early Pliocene, subsequent splits Pleistocene. Bee reached western by end Miocene mellisuginid (bee hummingbirds) was as sedentary, independent gains during Mellisugini. Early migration best explained biogeographic within repeated long-distance different lineages America, contributing radiation hummingbirds. Comparative phylogeography is needed test whether resulted from northward expansion southern sedentary populations.

Language: Английский

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Phylogenomics of Tetraopes longhorn beetles unravels their evolutionary history and biogeographic origins

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 27, 2024

Abstract Tetraopes longhorn beetles are known for their resistance to milkweed plant toxins and coevolutionary dynamics with plants ( Asclepias ). This association is considered a textbook example of coevolution, in which each species specialized feed on one or few . A major challenge investigating hypotheses conducting molecular ecology studies lies the limited understanding evolutionary history biogeographical patterns By integrating genomic, morphological, paleontological, geographical data, we present robust phylogeny relatives, using three inference methods varying subsets encompassing 2–12 thousand UCE loci. We elucidate diversification across regions colonization American continent. Our findings suggest that genus originated Central America approximately 21 million years ago during Miocene diversified from Mid-Miocene Pleistocene. These events coincided intense geological activity America. Additionally, independent North occurred Late early Pleistocene, potentially contributing group. data common ancestor Tetraopini migrated into America, likely facilitated by Atlantic land bridges, while closely related tribes diverged Asia Europe Paleocene. Establishing densely sampled provides foundation micro- macroevolutionary phenomena, including clinal variation, detoxification mechanisms this ecologically important

Language: Английский

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