Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?

Abstract Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) have a strongly synchronised breeding cycle with a fixed pattern of nest attendance for males and females. We studied leucocyte profiles and the development of granulocyte/lymphocyte (G/L) ratios as an indicator of stress. Variat...

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Published in:Journal of Ornithology
Language:English
Published: Springer-Verlag 2012
Subjects:
Sog
Online Access:http://hdl.handle.net/2262/62070
https://doi.org/10.1007/s10336-011-0658-5
id fttrinitycoll:oai:tara.tcd.ie:2262/62070
record_format openpolar
institution Open Polar
collection The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
op_collection_id fttrinitycoll
language English
topic Southern Rockhopper Penguin
Breeding biology
Immunology
G/L ratios
Body condition
Stress
spellingShingle Southern Rockhopper Penguin
Breeding biology
Immunology
G/L ratios
Body condition
Stress
Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
topic_facet Southern Rockhopper Penguin
Breeding biology
Immunology
G/L ratios
Body condition
Stress
description Abstract Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) have a strongly synchronised breeding cycle with a fixed pattern of nest attendance for males and females. We studied leucocyte profiles and the development of granulocyte/lymphocyte (G/L) ratios as an indicator of stress. Variation in G/L ratios were related to sex and breeding stage, but not individual body condition. G/L ratios were similar for males and females during the first part of the incubation period (?shared incubation?, when males and females both attend the nest), but in the second part of the incubation (?single incubation?, only one adult attends the nest), females had significantly higher G/L ratios and a lower body condition than males. The lowest G/L ratios were recorded during the creche of the chicks at the end of the breeding season. Our results show that G/L ratios in breeding Southern Rockhopper Penguins on the population-scale reflect the temporally and sexually different timing of fasting and refeeding related to the breeding cycle. However, this measurement was not sensitive enough to reveal an effect of body condition on G/L ratios on an individual scale. Zusammenfassung Sudliche Felsenpinguine (Eudyptes chrysocome chrysocome) haben einen stark synchronisierten Brutzyklus. Wahrend der Inkubation und Kukenaufzucht wechseln sich Mannchen und Weibchen am Nest in einem festgelegten Muster ab. Wir untersuchten Leukozyten-Profile und die Entwicklung des Granulocyten/Lymphozyten (G/L) Verhaltnisses als Indikator von Stress. Das G/L Verhaltnis war abhangig von Geschlecht und Brutphase (Inkubation, Kukenaufzucht), aber nicht individueller Korperkondition. Mannchen und Weibchen hatten ahnliche G/L Verhaltnisse in der ersten Phase der Inkubation (?gemeinsame Inkubation?, wenn Mannchen und Weibchen gemeinsam das Nest bewachen und die Eier bebruten). Weibchen hatten signifikant hohere G/L Verhaltnisse und geringere Korperkondition als Mannchen in der zweiten Phase der Inkubation (?einzelne Inkubation?, nur ein Elternteil bleibt am Nest). Wir fanden die niedrigsten G/L Verhaltnisse wahrend der Creche (Kuken bleiben tagsuber allein und formen kleine Gruppen, sog. Creches) am Ende des Brutzyklus. Unsere Ergebnisse zeigen, dass das G/L Verhaltnis das zeitliche Muster von Fasten und Gewichtszunahme wahrend des Brutzyklus fur Mannchen und Weibchen des sudlichen Felsenpinguins auf Populationsebene gut widerspiegelt. Auf individueller Ebene war diese Methode jedoch nicht subtil genug um einen Effekt von Korperkondition auf das G/L Verhaltnis nachzuweisen. phone: +49-7732-150134 (Dehnhard, Nina) dehnhard@orn.mpg.de (Dehnhard, Nina) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Dehnhard, Nina) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Poisbleau, Maud) Department Biology, Ethology, University of Antwerp - Campus Drie Eiken, Universiteitsplein 1 - 2610 - Wilrijk, Antwerp - BELGIUM (Poisbleau, Maud) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Demongin, Laurent) Department Biology, Ethology, University of Antwerp - Campus Drie Eiken, Universiteitsplein 1 - 2610 - Wilrijk, Antwerp - BELGIUM (Demongin, Laurent) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Quillfeldt, Petra) BELGIUM GERMANY Registration: 2011-01-18 Received: 2010-04-27 Revised: 2010-10-27 Accepted: 2011-01-18 ePublished: 2011-02-06
title Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
title_short Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
title_full Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
title_fullStr Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
title_full_unstemmed Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins?
title_sort do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in southern rockhopper penguins?
publisher Springer-Verlag
publishDate 2012
url http://hdl.handle.net/2262/62070
https://doi.org/10.1007/s10336-011-0658-5
long_lat ENVELOPE(-20.972,-20.972,63.993,63.993)
geographic Sog
geographic_facet Sog
genre Rockhopper penguin
genre_facet Rockhopper penguin
op_relation 0021-8375 (pISSN)
1439-0361 (eISSN)
0021-8375 (ISSN)
10336 (JournalID)
s10336-011-0658-5 (publisherID)
658 (ArticleID)
http://hdl.handle.net/2262/62070
Journal of Ornithology
152
3
759
768
doi:10.1007/s10336-011-0658-5
op_rights Dt. Ornithologen-Gesellschaft e.V., 2011
12 months
op_doi https://doi.org/10.1007/s10336-011-0658-5
container_title Journal of Ornithology
container_volume 152
container_issue 3
container_start_page 759
op_container_end_page 768
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spelling fttrinitycoll:oai:tara.tcd.ie:2262/62070 2023-05-15T18:07:17+02:00 Do leucocyte profiles reflect temporal and sexual variation in body condition over the breeding cycle in Southern Rockhopper Penguins? 2012-02-06T01:53:00Z http://hdl.handle.net/2262/62070 https://doi.org/10.1007/s10336-011-0658-5 en eng Springer-Verlag Berlin/Heidelberg 0021-8375 (pISSN) 1439-0361 (eISSN) 0021-8375 (ISSN) 10336 (JournalID) s10336-011-0658-5 (publisherID) 658 (ArticleID) http://hdl.handle.net/2262/62070 Journal of Ornithology 152 3 759 768 doi:10.1007/s10336-011-0658-5 Dt. Ornithologen-Gesellschaft e.V., 2011 12 months Southern Rockhopper Penguin Breeding biology Immunology G/L ratios Body condition Stress 2012 fttrinitycoll https://doi.org/10.1007/s10336-011-0658-5 2020-02-16T13:53:24Z Abstract Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) have a strongly synchronised breeding cycle with a fixed pattern of nest attendance for males and females. We studied leucocyte profiles and the development of granulocyte/lymphocyte (G/L) ratios as an indicator of stress. Variation in G/L ratios were related to sex and breeding stage, but not individual body condition. G/L ratios were similar for males and females during the first part of the incubation period (?shared incubation?, when males and females both attend the nest), but in the second part of the incubation (?single incubation?, only one adult attends the nest), females had significantly higher G/L ratios and a lower body condition than males. The lowest G/L ratios were recorded during the creche of the chicks at the end of the breeding season. Our results show that G/L ratios in breeding Southern Rockhopper Penguins on the population-scale reflect the temporally and sexually different timing of fasting and refeeding related to the breeding cycle. However, this measurement was not sensitive enough to reveal an effect of body condition on G/L ratios on an individual scale. Zusammenfassung Sudliche Felsenpinguine (Eudyptes chrysocome chrysocome) haben einen stark synchronisierten Brutzyklus. Wahrend der Inkubation und Kukenaufzucht wechseln sich Mannchen und Weibchen am Nest in einem festgelegten Muster ab. Wir untersuchten Leukozyten-Profile und die Entwicklung des Granulocyten/Lymphozyten (G/L) Verhaltnisses als Indikator von Stress. Das G/L Verhaltnis war abhangig von Geschlecht und Brutphase (Inkubation, Kukenaufzucht), aber nicht individueller Korperkondition. Mannchen und Weibchen hatten ahnliche G/L Verhaltnisse in der ersten Phase der Inkubation (?gemeinsame Inkubation?, wenn Mannchen und Weibchen gemeinsam das Nest bewachen und die Eier bebruten). Weibchen hatten signifikant hohere G/L Verhaltnisse und geringere Korperkondition als Mannchen in der zweiten Phase der Inkubation (?einzelne Inkubation?, nur ein Elternteil bleibt am Nest). Wir fanden die niedrigsten G/L Verhaltnisse wahrend der Creche (Kuken bleiben tagsuber allein und formen kleine Gruppen, sog. Creches) am Ende des Brutzyklus. Unsere Ergebnisse zeigen, dass das G/L Verhaltnis das zeitliche Muster von Fasten und Gewichtszunahme wahrend des Brutzyklus fur Mannchen und Weibchen des sudlichen Felsenpinguins auf Populationsebene gut widerspiegelt. Auf individueller Ebene war diese Methode jedoch nicht subtil genug um einen Effekt von Korperkondition auf das G/L Verhaltnis nachzuweisen. phone: +49-7732-150134 (Dehnhard, Nina) dehnhard@orn.mpg.de (Dehnhard, Nina) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Dehnhard, Nina) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Poisbleau, Maud) Department Biology, Ethology, University of Antwerp - Campus Drie Eiken, Universiteitsplein 1 - 2610 - Wilrijk, Antwerp - BELGIUM (Poisbleau, Maud) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Demongin, Laurent) Department Biology, Ethology, University of Antwerp - Campus Drie Eiken, Universiteitsplein 1 - 2610 - Wilrijk, Antwerp - BELGIUM (Demongin, Laurent) Vogelwarte Radolfzell, Max Planck Institute for Ornithology - Schlossallee 2 - 78315 - Radolfzell - GERMANY (Quillfeldt, Petra) BELGIUM GERMANY Registration: 2011-01-18 Received: 2010-04-27 Revised: 2010-10-27 Accepted: 2011-01-18 ePublished: 2011-02-06 Other/Unknown Material Rockhopper penguin The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive) Sog ENVELOPE(-20.972,-20.972,63.993,63.993) Journal of Ornithology 152 3 759 768