Mismatch‐induced growth reductions in a clade of Arctic‐breeding shorebirds are rarely mitigated by increasing temperatures

Global Change Biology, Journal Year: 2021, Volume and Issue: 28(3), P. 829 - 847

Published: Dec. 4, 2021

In seasonal environments subject to climate change, organisms typically show phenological changes. As these changes are usually stronger in at lower trophic levels than those higher levels, mismatches between consumers and their prey may occur during the consumers' reproduction period. While some species a mismatch induces reductions offspring growth, this is not always case. This variation be caused by relative strength of mismatch, or mitigating factors like increased temperature-reducing energetic costs. We investigated response chick growth rate arthropod abundance temperature for six populations ecologically similar shorebirds breeding Arctic sub-Arctic (four subspecies Red Knot Calidris canutus, Great C. tenuirostris Surfbird virgata). general, chicks experienced benefits (measured as condition index) when hatching before peak abundance, after peak. The moment season which occurred varied populations, likely depending on whether food was limiting Higher temperatures led faster average, but could only compensate increasing population experiencing coldest conditions. did find timing peaks availability across study years, possibly because our series observations relatively short; displayed no change over years either. Our results suggest that trend yet evident; however, we Arctic-breeding vulnerable phenomenon vulnerability depend dynamics.

Language: Английский

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Trait‐specific sensitive developmental windows: Wing growth best integrates weather conditions encountered throughout the development of nestling Alpine swifts

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(6)

Published: June 1, 2024

Abstract The size and growth patterns of nestling birds are key determinants their survival up to fledging long‐term fitness. However, because traits such as feathers, skeleton body mass can follow different developmental trajectories, our understanding the impact adverse weather on development requires insights into trait‐specific sensitive windows. We analysed data from Alpine swifts in Switzerland measured throughout age 50 days (i.e. between 70 days), for wing length (2693 nestlings 25 years) sternum (2447 22 years). show that windows corresponded periods peak growth, which span almost whole period wings first half sternum. Adverse conditions during these slowed down reduced size. Although at showed greatest inter‐individual variation, this was explained by two before measurement rather than growth. Interestingly, relationship temperature not linear, initial sharp increase associated with followed a moderate drop hot days, likely linked heat stress. Nestlings experiencing had lower rates fledged later ages, presumably compensate slower Overall, results suggest measures feather and, some extent, skeletal best capture consequences offspring, while better reflects short, instantaneous effects reserves energy depletion vs. storage unfavourable favourable conditions).

Language: Английский

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More than a simple egg: Underlying mechanisms of cold tolerance in avian embryos

Avian Research, Journal Year: 2023, Volume and Issue: 14, P. 100104 - 100104

Published: Jan. 1, 2023

Avian embryos, which develop within eggs, exhibit remarkable tolerance to extremely low temperatures. Despite being a common trait among all birds, the mechanisms underlying this cold in avian embryos remain largely unknown. To gain better understanding of phenomenon and coping involved, we reviewed literature on severe both wild domestic birds. We found that different bird orders during their development. In response stress, slow down heartbeat rates metabolism. temperatures, can suspend these processes, entering torpid-like state cardiac arrest. compensate for developmental delays, extend regular incubation periods. Depending embryonic age, species tolerate acute regimes; only few chronic regimes. also discussed various extrinsic intrinsic factors affect temperatures before after incubation. Cold appears be heritable shared by classes, regardless egg size or development (altricial/precocial). Driven environmental variability, is an optimal physiological ecological strategy mitigate adverse effects conditions fluctuating

Language: Английский

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The genomics of adaptation to climate in European great tit (Parus major) populations

Evolution Letters, Journal Year: 2023, Volume and Issue: 8(1), P. 18 - 28

Published: Oct. 12, 2023

The recognition that climate change is occurring at an unprecedented rate means there increased urgency in understanding how organisms can adapt to a changing environment. Wild great tit (

Language: Английский

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Plasticity in female timing may explain earlier breeding in a North American songbird

Journal of Animal Ecology, Journal Year: 2022, Volume and Issue: 91(10), P. 1988 - 1998

Published: July 12, 2022

Many species have shifted their breeding phenology in response to climate change. Identifying the magnitude of phenological shifts and whether climate-mediated selection drives these is key for determining species' resilience Birds are a strong model studying due numerous long-term research studies; however, generalities pertaining drivers will emerge only as we add study that differ life history geography. We investigated 32 years reproductive timing non-migratory population dark-eyed juncos Junco hyemalis. predicted plasticity would allow females breed earlier warmer springs. also favour asked temperatures throughout season predict strength selection. To test predictions, examined temporal changes annual median date onset (i.e. first egg date) used sliding window analysis identify spring driving patterns. Next, explored favoured breeding. Lastly, time during temperature was most associated with favouring First dates occurred over strongly covaried April temperatures. Furthermore, individual bred at least 3 typically Aprils, exhibiting plastic responses temperature. found significant overall higher relative fitness dates) variation time. However, across diverse climatic windows did not Our findings provide further evidence role phenotypic shifting breeding, regardless temperature, thus setting stage adaptive female phenology. suggest multi-brooded birds advancing likely increase length season, therefore, success.

Language: Английский

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Shifting environmental predictors of phenotypes under climate change: a case study of growth in high latitude seabirds

Journal of Avian Biology, Journal Year: 2023, Volume and Issue: 2023(5-6)

Published: Jan. 29, 2023

Climate change is altering species' traits across the globe. To predict future trait changes and understand consequences of those changes, we need to know environmental drivers phenotypic change. In present study, use multi‐decadal long datasets determine periods within‐year variation that growth three seabird species. We evaluate whether these changed over time them under climate find predictions could be improved by considering 1) timing factors used (predictive‐environmental features) can time, 2) type predictive‐environmental features time. evidence in predictors all populations studied for a predictor Arctic murre population. Environmental models warming conditions will decrease rates bird body sizes two species (black‐legged kittiwake Rissa tridactyla glaucous‐winged gull Larus glaucescens ), but not third (thick‐billed Uria lomvia ). Consequently, likely fledging gulls kittiwakes. Further, sea ice‐cover historically predicted chick well, no longer does – instead air temperature now better growth. Our study highlights investigate determinants commonly shift changing such have implications adaptation novel environments.

Language: Английский

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Returning to the Wilderness: Potential Habitat Suitability of Non-Native Pet Birds in South Africa

Biology, Journal Year: 2024, Volume and Issue: 13(7), P. 483 - 483

Published: June 28, 2024

The global trade of non-native pet birds has increased in recent decades, and this accelerated the introduction invasive wild. This study employed ensemble species distribution modelling (eSDM) to assess potential habitat suitability environmental predictor variables influencing bird reported lost sighted South Africa. We used data information on found from previous studies establish describe scenarios how may transition captivity Our revealed that models fitted performed well predicting for African grey (

Language: Английский

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Environmental conditions influence host–parasite interactions and host fitness in a migratory passerine

Integrative Zoology, Journal Year: 2024, Volume and Issue: unknown

Published: July 8, 2024

Abstract The study of host–parasite co‐evolution is a central topic in evolutionary ecology. However, research still fragmented and the extent to which parasites influence host life history debated. One reason for this incomplete picture frequent omission environmental conditions studies analyzing dynamics, may exposure or effects parasitism. To contribute elucidating largely unresolved question how are related prevalence intensity infestation their impact on hosts, we took advantage 25 years monitoring breeding population pied flycatchers, Ficedula hypoleuca , Mediterranean area Spain. We investigated temperature precipitation during nestling stage at local scale blowfly ( Protocalliphora azurea ) parasitism stage. In addition, explored mediating effect extrinsic intrinsic factors success (production fledglings) offspring quality (nestling mass day 13). were associated with different (host date, brood size) (breeding habitat, mean temperature) factors. Specifically, higher average temperatures phase lower intensities parasitism, be explained by changes blowflies’ activity larval developmental success. contrast, no relationship was found between any variables evaluated. Hosts that experienced high broods produced more fledglings as increased, suggesting physiological responses severe development might enhanced warmer conditions. weight was, however, unrelated interactive Overall, our results highlight dependence parasite–host interactions importance considering multiple fitness indicators climate‐mediated understand complex implications avian dynamics.

Language: Английский

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Breeding phenology drives variation in reproductive output, reproductive costs and offspring fitness in a viviparous ectotherm

Journal of Evolutionary Biology, Journal Year: 2024, Volume and Issue: 37(9), P. 1023 - 1034

Published: July 11, 2024

Phenological advances are a widespread response to global warming and can contribute determine the climate vulnerability of organisms, particularly in ectothermic species, which highly dependent on ambient temperatures complete their life cycle. Yet, relative contribution breeding dates temperature conditions during gestation fitness females offspring is poorly documented reptiles. Here, we exposed common lizard Zootoca vivipara contrasting thermal scenarios (cold vs. hot treatment) quantified effects parturition treatment life-history traits for 1 year. Overall, our results suggest that date has greater impact than history strategies. In particular, found positive an earlier juvenile survival, growth, recruitment suggesting environmental-dependent selection and/or differences parental quality between early late breeders underlie seasonal changes fitness. compromised energetic condition gravid females, suggests existence mother-offspring conflict regarding optimization dates. While numerous studies focused direct alterations incubation reptile traits, highlight importance considering role phenology assessing short- long-term developmental plasticity.

Language: Английский

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Effects of ambient temperature during the nestling stage on a stress indicator in nestling pied flycatchers Ficedula hypoleuca

International Journal of Biometeorology, Journal Year: 2021, Volume and Issue: 66(1), P. 139 - 148

Published: Oct. 7, 2021

Long-term and short-term changes in ambient temperature can cause stress birds, leading to the level of hematological parameters. The H:L ratio (heterophil-to-lymphocyte ratio) is a index that allows for assessment induced by environmental changes, including weather conditions. In this paper, we examined influence temperatures sum precipitation on health nestling pied flycatchers (Ficedula hypoleuca) using reflecting body's response stress. All indicators influenced ratio, yet average value daily minimum during first 12 days life had strongest influence, maximum weakest effect, while no significant influence. Our research indicates even small increase caused reaction flycatchers, which was reflected an ratio. (H:L probably result poor conditions (precipitation, low temperature), prevented adult birds from actively foraging properly feeding nestlings.

Language: Английский

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