Two sides of a coin: ecological and chronobiological perspectives of timing in the wild

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2017, Volume and Issue: 372(1734), P. 20160246 - 20160246

Published: Oct. 9, 2017

Most processes within organisms, and most interactions between organisms their environment, have distinct time profiles. The temporal coordination of such is crucial across levels biological organization, but disciplines differ widely in approaches to study timing. Such differences are accentuated ecologists, who centrally concerned with a holistic view an organism relation its external chronobiologists, emphasize internal timekeeping the mechanisms adjustment environment. We argue that ecological chronobiological perspectives complementary, studies at intersection will enable both fields jointly overcome obstacles currently hinder progress. However, achieve this integration, we first cross some conceptual barriers, clarifying prohibitively inaccessible terminologies. critically assess main assumptions concepts either field, as well common interests. Both intersect need understand extent regulation plasticity, concept 'chronotype', i.e. characteristic properties individuals which targets natural sexual selection. then highlight promising developments, point out open questions, acknowledge difficulties propose directions for further integration through Wild Clock research.This article part themed issue 'Wild Clocks: integrating chronobiology ecology free-living animals'.

Language: Английский

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Birds advancing lay dates with warming springs face greater risk of chick mortality

Proceedings of the National Academy of Sciences, Journal Year: 2020, Volume and Issue: 117(41), P. 25590 - 25594

Published: Sept. 28, 2020

Significance The advancement of breeding behavior is a well-documented response to changing climate conditions, as timing reproduction with resource availability critical for success in many species. However, the relationship between cues that prompt and can become decoupled, reducing success. Tree swallows have advanced warming springs, but now chicks are exposed twice risk inclement weather resulting high rates chick mortality. Mass mortality events appear be driven by decreasing insect at low daytime temperatures. Our findings highlight complex effects change on animal life cycles demonstrate urgency understanding how animals balance information from environment when making crucial history decisions.

Language: Английский

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Keeping time without a spine: what can the insect clock teach us about seasonal adaptation?

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2017, Volume and Issue: 372(1734), P. 20160257 - 20160257

Published: Oct. 9, 2017

Seasonal change in daylength (photoperiod) is widely used by insects to regulate temporal patterns of development and behaviour, including the timing diapause (dormancy) migration. Flexibility photoperiodic response critical for rapid shifts new hosts, survival face global climate reproductive isolation. At same time, daily circadian clock also essential development, multiple behaviours, correct flight orientation during long-distance Although studied decades, how these two biological mechanisms are integrated poorly understood, part because core genes all transcription factors or regulators that able exert effects throughout genome. In this chapter, we discuss clocks wild from perspective diverse insect groups across eco-geographic contexts Antarctic tropical regions Earth. Application expanding tool box molecular techniques will lead us distinguish universal unique underlying evolution timing, their interaction taxonomic ecological represented insects.This article themed issue 'Wild clocks: integrating chronobiology ecology understand timekeeping free-living animals'.

Language: Английский

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Endogenous Programs and Flexibility in Bird Migration

Frontiers in Ecology and Evolution, Journal Year: 2020, Volume and Issue: 8

Published: March 26, 2020

Endogenous programs that regulate annual cycles have been shown for many taxa, including protists, arthropods, fish, mammals and birds. In migration biology, these are best known in songbirds. The majority of songbirds rely on a genetic program inherited from their parents will guide them during first solo-migration. phenotypic components the crucial individual fitness survival, include time components, direction, distance. This is constructed to both behavior flexible responses environment at different stages cycle. driven by circannual rhythm, allowing for, resetting, carry-over effects. With experience, decisions migrants may be based information learnt breeding sites, wintering en route. At population level, substantial variation route choice timing explained interactions with environmental social factors, learning. this review we explore endogenous discuss what ways they can lead flexibility behavior.

Language: Английский

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Evolutionary Response to Climate Change in Migratory Pied Flycatchers

Current Biology, Journal Year: 2019, Volume and Issue: 29(21), P. 3714 - 3719.e4

Published: Oct. 24, 2019

Language: Английский

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Seasonal reproductive tactics: annual timing and the capital-to-income breeder continuum

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2017, Volume and Issue: 372(1734), P. 20160250 - 20160250

Published: Oct. 9, 2017

Tactics of resource use for reproduction are an important feature life-history strategies. A distinction is made between ‘capital’ breeders, which finance using stored energy, and ‘income’ pay concurrent energy intake. In reality, vertebrates a continuum capital-to-income tactics, and, many species, the allocation capital towards plastic trait. Here, we review how trophic interactions timing events influenced by tactics in birds mammals. We first examine plasticity linked to phenological flexibility via endocrine/neuroendocrine control systems sensory circuits that detect changes endogenous state, environmental cues. then describe ecological drivers reproductive species vary degree they capital. Capital can be used either as mechanism facilitate temporal synchrony supply demand or means lessening need synchrony. Within individual's ability cope with change may more tightly than absolute position on breeder continuum. This article part themed issue ‘Wild clocks: integrating chronobiology ecology understand timekeeping free-living animals’.

Language: Английский

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Migratory strategy drives species-level variation in bird sensitivity to vegetation green-up

Nature Ecology & Evolution, Journal Year: 2021, Volume and Issue: 5(7), P. 987 - 994

Published: April 29, 2021

Language: Английский

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High individual repeatability of the migratory behaviour of a long-distance migratory seabird

Movement Ecology, Journal Year: 2022, Volume and Issue: 10(1)

Published: Feb. 5, 2022

Abstract Background Understanding the evolution of migration requires knowledge patterns, sources, and consequences variation in migratory behaviour, a need exacerbated by fact that many species show rapid population declines require knowledge-based conservation measures. We therefore detailed on spatial temporal distribution individuals across their annual cycle, quantify how components behaviour vary within among individuals. Methods tracked 138 journeys undertaken 64 adult common terns ( Sterna hirundo ) from breeding colony northwest Germany to identify spatiotemporal these birds evaluate individual repeatability eleven traits describing behaviour. Results Birds left early September, then moved south along East Atlantic Flyway. Wintering areas were reached mid-September located at west coasts West Africa as well Namibia South Africa. wintering late March mid-April. The timing, total duration distance migration, location areas, moderately highly repeatable (repeatability indexes: 0.36–0.75, 0.65–0.66, 0.93–0.94, 0.98–1.00, respectively), estimates not strongly affected population-level inter-annual Conclusions found large between-individual tern strong several aspects

Language: Английский

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Decoupling of bird migration from the changing phenology of spring green-up

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(12)

Published: March 4, 2024

The green-up of vegetation in spring brings a pulse food resources that many animals track during migration. However, phenology is changing with climate change, posing an immense challenge for species time their migrations to coincide these resource pulses. We evaluated changes from 2002 2021 relation the 150 Western-Hemisphere bird using eBird citizen science data. found has changed within migration routes, and yet most align more closely long-term averages than current conditions. Changing strongly influenced phenological mismatches, especially longer-distance migrants. These results reveal may have limited flexibility adjust emphasize mounting migratory face following en route climate.

Language: Английский

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An ontogenetic perspective on migratory strategy of a long‐lived pelagic seabird: Timings and destinations change progressively during maturation

Journal of Animal Ecology, Journal Year: 2019, Volume and Issue: 89(1), P. 29 - 43

Published: June 17, 2019

Abstract The processes that drive the ontogeny of migratory strategies in long‐lived animals with slow maturation remain enigmatic. While some short‐lived migrants are known or believed to repeat same patterns throughout their lives, little is on time required for immature progressively acquire adult‐like behaviours, which aspects take longer refine during process. Here, we studied long‐distance and related spatial distribution a seabird species annual cycle. To do so, deployed light‐level geolocators 4‐ 9‐year‐old Cory's shearwaters ( Calonectris borealis ) breeding adults. We revealed timings destinations young changed age. effect ageing was remarkably evident spring performance phenology. Birds gradually shortened duration non‐breeding period by advancing departure date reducing travelling time, resulted sequential arrival at colony various age contingents. Ageing immatures from more exploratory strategy conservative way exploiting resources, both year‐round spread across oceanic domains total distance travelled. Immatures always performed trans‐equatorial migration Southern Hemisphere, contrasting 17% adults remained North Atlantic year‐round. Finally, season were widely dispersed through overlap Our long‐term study provides empirical support hypothesis species, refinement behaviour progressive process mediated experience, where life stage constraints competition resources may also play role. emerging pattern suggests avian taxa, prolonged, complex dynamic

Language: Английский

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