Simultaneous estimation of the temporal and spatial extent of animal migration using step lengths and turning angles

Movement Ecology, Год журнала: 2024, Номер 12(1)

Опубликована: Янв. 8, 2024

Abstract Background Animals of many different species, trophic levels, and life history strategies migrate, the improvement animal tracking technology allows ecologists to collect increasing amounts detailed data on these movements. Understanding when animals migrate is important for managing their populations, but still difficult despite modelling advancements. Methods We designed a model that parametrically estimates timing migration from data. Our identifies beginning end migratory movements as signaled by change-points in step length turning angle distributions. To this end, we can also use estimate how an animal’s movement changes it begins migrating. In addition thorough simulation analysis, tested our three datasets: ferruginous hawks ( Buteo regalis ) Great Plains, barren-ground caribou Rangifer tarandus groenlandicus northern Canada, non-migratory brown bears Ursus arctos Canadian Arctic. Results analysis suggests most useful datasets where increase speed or directional autocorrelation clearly detectable. estimated nearest day, while confirming lack behaviour bears. estimating migrated, identified differences they migrated; achieved efficient migrations drastically rates was through significant increases persistence. Conclusions approach applicable studies includes parameters facilitate comparison between species datasets. hope rigorous assessment metrics will aid understanding both why move.

Язык: Английский

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Experience reduces route selection for conspecifics by the collectively migrating white stork

Current Biology, Год журнала: 2024, Номер 34(9), С. 2030 - 2037.e3

Опубликована: Апрель 17, 2024

Migration can be an energetically costly behavior with strong fitness consequences in terms of mortality and reproduction.1Sillett T.S. Holmes R.T. Variation survivorship a migratory songbird throughout its annual cycle.J. Anim. Ecol. 2002; 71: 296-308https://doi.org/10.1046/j.1365-2656.2002.00599.xCrossref Scopus (717) Google Scholar,2Alerstam T. Hedenström A. Åkesson S. Long-distance migration: evolution determinants.Oikos. 2003; 103: 247-260https://doi.org/10.1034/j.1600-0706.2003.12559.xCrossref (891) Scholar,3Keefer M. Peery C. Heinrich Temperature-mediated en route migration travel rates endangered Snake River sockeye salmon.Ecology Freshwater Fish. 2008; 17: 136-145https://doi.org/10.1111/j.1600-0633.2007.00267.xCrossref (91) Scholar,4Klaassen R.H. Hake Strandberg R. Koks B.J. Trierweiler Exo K.M. Bairlein F. Alerstam When where does occur birds? Direct evidence from long-term satellite tracking raptors.J. 2014; 83: 176-184https://doi.org/10.1111/1365-2656.12135Crossref PubMed (362) Scholar,5Lok Overdijk O. Piersma The cost spoonbills suffer higher during trans-Saharan spring migrations only.Biol. Lett. 2015; 1120140944https://doi.org/10.1098/rsbl.2014.0944Crossref (98) Scholar,6Loonstra A.H.J. Verhoeven M.A. Senner N.R. Both Adverse wind conditions northward Sahara crossings increase the in-flight Black-tailed Godwits.Ecol. 2019; 22: 2060-2066https://doi.org/10.1111/ele.13387Crossref (48) Scholar,7Alerstam Högstedt G. Bird reproduction relation to habitats for survival breeding.Ornis Scand. 1982; 13: 25-37https://doi.org/10.2307/3675970Crossref (78) Scholar,8George R.W. Evolution life cycles, including migration, spiny lobsters (Palinuri- dae).N. Z. J. Mar. Freshw. Res. 2005; 39: 503-514https://doi.org/10.1080/00288330.2005.9517329Crossref (36) Scholar,9Hebblewhite Merrill E. McDermid A multi-scale test forage maturation hypothesis partially ungulate population.Ecol. Monogr. 78: 141-166https://doi.org/10.1890/06-1708.1Crossref (370) Scholar,10Somveille Rodrigues A.S.L. Manica Why do birds migrate? macroecological perspective.Glob. Biogeogr. 24: 664-674https://doi.org/10.1111/geb.12298Crossref (131) Scholar,11Flack Aikens E.O. Kölzsch Nourani Snell K.R.S. Fiedler W. Linek N. Bauer H.G. Thorup K. Partecke et al.New frontiers bird research.Curr. Biol. 2022; 32 (R1187-R1199)https://doi.org/10.1016/j.cub.2022.08.028Abstract Full Text PDF (19) Scholar Migrants should select routes minimize their costs, but both costs benefits may change experience.12Sergio Tanferna De Stephanis Jiménez L.L. Blas Tavecchia Preatoni D. Hiraldo Individual improvements selective shape lifelong performance.Nature. 515: 410-413https://doi.org/10.1038/nature13696Crossref (237) Scholar,13Aikens Wikelski Flack Learning shapes development behavior.Proc. Natl. Acad. Sci. USA. 2024; 121e2306389121https://doi.org/10.1073/pnas.2306389121Crossref (1) Scholar,14Penteriani V. Lamamy Kojola I. Heikkinen Vermeulen del Mar Delgado Age Ain't Nothing But Number: factors other than age brown bear movement patterns.Animal Behaviour. 183: 61-67https://doi.org/10.1016/j.anbehav.2021.10.020Crossref (2) This raises question whether experience changes how individuals routes. Here, we investigate effect on selection criteria collectively migrating soaring bird, white stork (Ciconia ciconia). We perform step-selection analysis longitudinal dataset 158 storks over up 9 years quantify they based social atmospheric environments examine this age. find clear ontogenetic shifts criteria. Juveniles choose that have good high conspecific densities. Yet, as gain experience, storks' availability information reduces—after fifth experienced also low Thus, our results suggest age, gradually replace gleaned gained allowing them shift timing increasing timescale at which

Язык: Английский

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Active European warzone impacts raptor migration

Current Biology, Год журнала: 2024, Номер 34(10), С. 2272 - 2277.e2

Опубликована: Май 1, 2024

Human conflicts can have impacts on wildlife, from direct mortality and environmental damage to the displacement of people, changing institutional dynamics altering economies.1Gaynor K.M. Fiorella K.J. Gregory G.H. Kurz D.J. Seto K.L. Withey L.S. Brashares J.S. War wildlife: linking armed conflict conservation.Front. Ecol. Environ. 2016; 14: 533-542Crossref Scopus (101) Google Scholar,2Sutherland W.J. Dias M.P. Dicks L.V. Doran H. Entwistle A.C. Fleishman E. Gibbons D.W. Hails R. Hughes J. et al.A horizon scan emerging global biological conservation issues for 2020.Trends Evol. 2020; 35: 81-90Abstract Full Text PDF PubMed (39) Scholar,3Gallo-Cajiao Dolšak N. Prakash A. Mundkur T. Harris P.G. Mitchell R.B. Davidson Hansen B. Woodworth B.K. Fuller R.A. al.Implications Russia's invasion Ukraine governance biodiversity Conserv. Sci. 2023; 4989019Crossref (5) Scholar Extreme anthropogenic disturbances related may act as a barrier migrating birds increase energetic costs migration.4Kikuchi D.M. Nakahara Kitamura W. Yamaguchi N.M. Estimating potential cumulative effects raptors: case study using positioning system tracking in Japan.in: Bispo Bernardino Coelho Costa J.L. Wind Energy Wildlife Impacts: Balancing Sustainability with Conservation. Springer International Publishing, 2019: 51-65Crossref (2) On February 24th, 2022, Russian Federation invaded Ukraine, targeted attacks Kyiv eastern regions.5Guterres, (2022). Statement by Secretary-General – Ukraine. 24 2022. https://www.un.org/sg/en/content/sg/statement/2022-02-24/statement-the-secretary-general-%E2%80%93-ukraineGoogle By March 3rd, when first 19 tagged Greater Spotted Eagles entered migration, had spread most major cities, including parts western Ukraine.6Report Emergency Relief CoordinatorHumanitarian situation humanitarian response (2022).https://digitallibrary.un.org/record/3967062?v=pdfGoogle We quantified how impacted migratory behavior this species GPS tracks data Armed Conflict Location Event Data (ACLED) project7Clionadh Linke Hegre Karlsen Introducing ACLED: An Dataset.J. Peace Res. 2010; 47: 651-660Crossref (984) Scholar,8Raleigh C. Kishi Political instability patterns are obscured dataset scope conditions, sources, coding choices.Humanit. Soc. Commun. 1074Google quasi-experimental before-after control-impact design, accounting meteorological conditions. Migrating eagles were exposed events along their migration through exhibited different compared previous years, fewer stopover sites making large route deviations. This delayed arrival breeding grounds likely increased cost sublethal fitness effects. Our findings provide rare window into human affect animal highlight exposure or other extreme wildlife.

Язык: Английский

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Seasonal patterns and processes of migration in a long-distance migratory bird: energy or time minimization?

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2024)

Опубликована: Июнь 1, 2024

Optimal migration theory prescribes adaptive strategies of energy, time or mortality minimization. To test alternative hypotheses energy- and time-minimization we used multisensory data loggers that record time-resolved flight activity light for positioning by geolocation in a long-distance migratory shorebird, the little ringed plover,

Язык: Английский

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Effect of sex on the gut microbiota characteristics of passerine migratory birds

Frontiers in Microbiology, Год журнала: 2022, Номер 13

Опубликована: Сен. 2, 2022

The gut microbiota, considered the "invisible organ" in host animal, has been extensively studied recently. However, knowledge about microbiota characteristics of passerine migratory birds during migration is limited. This study investigated three dominant bird species (namely orange-flanked bluetail Tarsiger cyanurus, yellow-throated bunting Emberiza elegans, and black-faced spodocephala) same niche spring whether they were sex-specific. compositions these their male female individuals found to be similar. main bacterial phyla Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, genera Lactobacillus, Acinetobacter, Rickettsiella, Mycobacterium; however, relative abundance was different. Moreover, some potential pathogens beneficial bacteria all species. Alpha diversity analysis showed that T. richness higher than individuals, while opposite true for E. elegans spodocephala. alpha significant differences between (p < 0.05). beta also revealed microbial community structure differed significantly

Язык: Английский

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Do departure and flight route decisions correlate with immune parameters in migratory songbirds?

Functional Ecology, Год журнала: 2022, Номер 36(12), С. 3007 - 3021

Опубликована: Сен. 23, 2022

Abstract Many songbirds migrate twice a year to exploit seasonally available resources. These journeys are energetically demanding and energy reserves of these small birds limited. Accordingly, most the time migrating is spent during stopovers that serve rest, replenish resources recover. While external influences, like prevailing weather conditions resource availability, well studied with regard stopover behaviour departure decisions, studies on how birds' individual physiological condition decisions may be linked scarce. We used large‐scale radio‐telemetry network covering German Bight (SE North Sea) study immunological constitution at correlate flight in five species short‐ medium‐distance migratory songbirds. measured markers innate (bacterial killing activity, lysozyme concentration, natural antibodies complement titres) acquired immune function (immunoglobulin Y) plasma. After sampling, we tracked terms duration as routes distances within telemetry after departure. found durations were positively related immunoglobulin Y across bacterial activity solely song thrushes spring, while no relations became apparent fall. Flight concentrations both spring fall, though not all investigated species. Coastal offshore‐oriented taken independent status. Our for first shows wild correlated their status, only but also beyond stopover. Furthermore, increased titres Immunoglobulin concentrations, either due recent infection or greater investment function, took additional sites, probably reach breeding grounds good condition. During less time‐constrained fall season, generally prolonged, from status any delays improve likely detrimental fitness. Read free Plain Language Summary this article Journal blog.

Язык: Английский

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Competition is a major limiting factor of refueling in migratory passerines during stopover

Journal of Avian Biology, Год журнала: 2023, Номер 2023(11-12)

Опубликована: Июль 25, 2023

For an avian migrant, refueling capacity attainable during stopovers governs the entire migration schedule and, ultimately, its fitness. Specifically, timely replenishing energy stores is critical when involves crossing ecological barriers, within which may be limited. Here, we tested hypothesis that fuel deposition rates (FDRs) of migratory passerines barrier‐edge stopover sites are constrained by density potential competitors, irrespective season, phenology, and local environmental conditions. We also evaluated diverse intra‐ inter‐specific competition scenarios explored a mediation density‐dependence factors. The analyzed data, collected us over 13 consecutive years (2009–2022), contain information on seven species long‐distance insectivorous measured eight desert‐edge habitats throughout autumn spring migrations. As predicted, our analyses revealed negative regulation FDRs, consistent across seasons. Notably, bird exerted effect above beyond other factors known to influence FDR, such as relative ambient temperature, temporal progress stopover, body mass next landfall. expected, FDR increased at higher temperatures with stopover's progress. In spring, rose season advanced. These findings signify substantial impact performance their barrier's edge, acting detected importance interrelation predictors provides insight into functioning; environmentally imposed inescapable interspecific interference thus significant limiting factor deleterious relationship potentially remediable informed habitat restoration planning.

Язык: Английский

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Expression patterns of heat-shock genes during stopover and the trade-off between refueling and stress response in a passerine migrant

Journal of Comparative Physiology B, Год журнала: 2024, Номер 194(1), С. 1 - 6

Опубликована: Янв. 31, 2024

Migrating birds are often exposed to variable environments and face a multitude of stress exposures along their long-distance flights. During stopover refueling, migratory must balance the need accumulate energy reserves continue migration with respond environmental physiological stressors. We examined gene expression patterns different Heat Shock Proteins (HSPs) in migrating during at body condition states (lean vs. fat), provide some first insights on role HSPs bird explore concept trade-off between refueling response. Our results showed upregulation HSP release that could be associated muscle growth increased cholesterol lipid synthesis needed for fuel upcoming migration. On other hand, capture, HSP5 attributed recovery from non-stop endurance flight when crossing Sahara Desert-Mediterranean Sea ecological barrier. All significantly loads up 48% lean mass we evidence rebuilding as by 10%, highlighting fact sites can play major migrants.

Язык: Английский

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Migratory singers dynamically overlap the signal space of a breeding warbler community

Ecology and Evolution, Год журнала: 2024, Номер 14(2)

Опубликована: Фев. 1, 2024

Migratory species inhabit many communities along their migratory routes. Across taxa, these repeatedly move into and out of communities, interacting with each other locally breeding competing for resources niche space. However, influence is rarely considered in analyses ecological processes within the they temporarily occupy. Here, we explore impact on a community using framework acoustic signal space, limited resource which sounds co-exist. Migrating New World warblers (Parulidae, hereafter referred to as migrant species) often sing during refueling stops areas at times warbler (hereafter are singing establish territories attract mates. We used eBird data determine co-occurrence 19 11 across spring migration SW Michigan, generated space from song recordings species, examined patterns signaling overlap experienced by migrants moved through community. Migrant were present two-thirds season local including periods when established attracted Signaling individual was idiosyncratic varied over time, yet between occurred more commonly than or species. Nevertheless, proportion similar among Our findings showed that overlapped signals suggesting could have unexplored impacts communication potentially affecting detection evolution. study contributes growing body research documenting ecosystems.

Язык: Английский

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A refined magnetic pulse treatment method for magnetic navigation experiments with adequate sham control: a case study on free-flying songbirds

Journal of The Royal Society Interface, Год журнала: 2024, Номер 21(214)

Опубликована: Май 1, 2024

Migratory songbirds may navigate by extracting positional information from the geomagnetic field, potentially with a magnetic-particle-based receptor. Previous studies assessed this hypothesis experimentally exposing birds to strong but brief magnetic pulse aimed at remagnetizing particles and evoking an altered behaviour. Critically, such were not ideally designed because they lacked adequate sham treatment controlling for induced electric field that is fundamentally associated pulse. Consequently, we sham-controlled magnetic-pulse experiment, producing similar while limiting value deemed insufficient remagnetize particles. We tested novel approach pulsing more than 250 wild, migrating European robins ( Erithacus rubecula ) during two autumn seasons. After them, five traits of free-flight migratory behaviour observed, no effect could be found. Notably, one traits, motivation adults, was significantly affected in only study years. Considering problem reproducing experiments wild animals, recommend multi-year encompassing large sample size, blinded design built-in control obtain future insights into role magnetoreception bird navigation.

Язык: Английский

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