Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird
It has been proposed that immune functioning in wild animals is shaped by the trade-off between a probability of encountering pathogens and an availability of resources for maintaining immune system in active state. Due to resources’ seasonality one can expect that immune functioning, e.g., absolute...
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ftdryad:oai:v1.datadryad.org:10255/dryad.217590 2023-05-15T17:40:34+02:00 Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird Demina, Irina Tsvey, Arseny Babushkina, Olga Bojarinova, Julia The North-West Russia 2019-05-24T20:28:56Z http://hdl.handle.net/10255/dryad.217590 https://doi.org/10.5061/dryad.qk8v9g1 unknown doi:10.5061/dryad.qk8v9g1/1 doi:10.1111/jav.02117 doi:10.5061/dryad.qk8v9g1 Demina I, Tsvey A, Babushkina O, Bojarinova J (2019) Time‐keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird. Journal of Avian Biology. http://hdl.handle.net/10255/dryad.217590 leukocyte profile Phylloscopus collybita seasonal changes annual cycle heterophils to lymphocytes ratio time-keeping programme Article 2019 ftdryad https://doi.org/10.5061/dryad.qk8v9g1 https://doi.org/10.5061/dryad.qk8v9g1/1 https://doi.org/10.1111/jav.02117 2020-01-01T16:29:08Z It has been proposed that immune functioning in wild animals is shaped by the trade-off between a probability of encountering pathogens and an availability of resources for maintaining immune system in active state. Due to resources’ seasonality one can expect that immune functioning, e.g., absolute and relative counts of white blood cells, WBC (leukocyte profile) also follows an annual cycle. However, dynamics of the seasonal changes of leukocyte profile are controversial and specific inquiries so far addressed only a portion of annual cycle. To study the seasonal dynamics of the leukocyte profile and to test its possible endogenous basis we experimentally simulated annual cycle in a migratory passerine bird, chiffchaff (Phylloscopus collybita abietinus). We report here a clear seasonal pattern of leukocyte profile in that species. The highest WBC counts were observed during pre-alternate moult and the lowest during the subsequent spring migration; the seasonal dynamics of HL ratio showed the opposite tendency. Surprisingly, HL ratios during autumn migration were relatively low, indicating little to no stress. Observed seasonal changes in controlled experimental conditions suggest an existence of time-keeping programme underlying these variations. Additionally we found negative relationship between the body condition index and WBC counts and positive relationship with HL (heterophil to lymphocyte) ratio; these findings are controversial with the data obtained with other bird species in wild populations. Understanding the origins of variation of leukocyte profile per se and in relation with other parameters of physiological condition can be a useful tool in studying physiological response to environmental changes. Article in Journal/Newspaper North-West Russia Dryad Digital Repository (Duke University) |
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Open Polar |
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Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
leukocyte profile Phylloscopus collybita seasonal changes annual cycle heterophils to lymphocytes ratio time-keeping programme |
spellingShingle |
leukocyte profile Phylloscopus collybita seasonal changes annual cycle heterophils to lymphocytes ratio time-keeping programme Demina, Irina Tsvey, Arseny Babushkina, Olga Bojarinova, Julia Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
topic_facet |
leukocyte profile Phylloscopus collybita seasonal changes annual cycle heterophils to lymphocytes ratio time-keeping programme |
description |
It has been proposed that immune functioning in wild animals is shaped by the trade-off between a probability of encountering pathogens and an availability of resources for maintaining immune system in active state. Due to resources’ seasonality one can expect that immune functioning, e.g., absolute and relative counts of white blood cells, WBC (leukocyte profile) also follows an annual cycle. However, dynamics of the seasonal changes of leukocyte profile are controversial and specific inquiries so far addressed only a portion of annual cycle. To study the seasonal dynamics of the leukocyte profile and to test its possible endogenous basis we experimentally simulated annual cycle in a migratory passerine bird, chiffchaff (Phylloscopus collybita abietinus). We report here a clear seasonal pattern of leukocyte profile in that species. The highest WBC counts were observed during pre-alternate moult and the lowest during the subsequent spring migration; the seasonal dynamics of HL ratio showed the opposite tendency. Surprisingly, HL ratios during autumn migration were relatively low, indicating little to no stress. Observed seasonal changes in controlled experimental conditions suggest an existence of time-keeping programme underlying these variations. Additionally we found negative relationship between the body condition index and WBC counts and positive relationship with HL (heterophil to lymphocyte) ratio; these findings are controversial with the data obtained with other bird species in wild populations. Understanding the origins of variation of leukocyte profile per se and in relation with other parameters of physiological condition can be a useful tool in studying physiological response to environmental changes. |
format |
Article in Journal/Newspaper |
author |
Demina, Irina Tsvey, Arseny Babushkina, Olga Bojarinova, Julia |
author_facet |
Demina, Irina Tsvey, Arseny Babushkina, Olga Bojarinova, Julia |
author_sort |
Demina, Irina |
title |
Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
title_short |
Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
title_full |
Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
title_fullStr |
Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
title_full_unstemmed |
Data from: Time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
title_sort |
data from: time-keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.217590 https://doi.org/10.5061/dryad.qk8v9g1 |
op_coverage |
The North-West Russia |
genre |
North-West Russia |
genre_facet |
North-West Russia |
op_relation |
doi:10.5061/dryad.qk8v9g1/1 doi:10.1111/jav.02117 doi:10.5061/dryad.qk8v9g1 Demina I, Tsvey A, Babushkina O, Bojarinova J (2019) Time‐keeping programme can explain seasonal dynamics of leukocyte profile in a migrant bird. Journal of Avian Biology. http://hdl.handle.net/10255/dryad.217590 |
op_doi |
https://doi.org/10.5061/dryad.qk8v9g1 https://doi.org/10.5061/dryad.qk8v9g1/1 https://doi.org/10.1111/jav.02117 |
_version_ |
1766141518743076864 |