Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic
SUMMARY For Isospora (Protozoa: Eimeriidae) parasites of passerine birds, diurnal periodicity of oocyst output is a well-described phenomenon. From the temporal zone to the tropics, oocyst production is correlated with the light-dark cycle, peaking in the afternoon hours. However, nothing is known a...
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Online Access: | http://dx.doi.org/10.1017/s0031182011000795 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011000795 |
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crcambridgeupr:10.1017/s0031182011000795 2024-03-03T08:40:56+00:00 Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic DOLNIK, OLGA V. METZGER, BENJAMIN J. LOONEN, MAARTEN J. J. E. 2011 http://dx.doi.org/10.1017/s0031182011000795 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011000795 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 138, issue 9, page 1077-1081 ISSN 0031-1820 1469-8161 Infectious Diseases Animal Science and Zoology Parasitology journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0031182011000795 2024-02-08T08:35:50Z SUMMARY For Isospora (Protozoa: Eimeriidae) parasites of passerine birds, diurnal periodicity of oocyst output is a well-described phenomenon. From the temporal zone to the tropics, oocyst production is correlated with the light-dark cycle, peaking in the afternoon hours. However, nothing is known about the existence of diurnal periodicity of these parasites in the birds of High Arctic environments, under permanent light during summer. We sampled free-ranging Snow Bunting (Aves: Passeriformes), on Svalbard in summer and tested oocysts output of Isospora plectrophenaxia. Here we show that under the permanent light conditions of Arctic summer in the wild, Isospora plectrophenaxia , a parasite of the Snow Bunting, still keeps the 24-h rhythm of oocyst output with the peak in the post-meridiem hours, despite the absence of diurnal periodicity in host's activity. Our findings prove the ability of avian Isospora to invoke alternative cues for synchronizing the circadian rhythms. Possible cues and adaptive significance of diurnal periodicity of parasite output in High Arctic are discussed. The maintenance of synchronization and timing of the parasite life-cycle stages is under positive selection pressure even in permanent daylight in the Arctic. Article in Journal/Newspaper Arctic Snow Bunting Svalbard midnight sun Cambridge University Press Arctic Svalbard Parasitology 138 9 1077 1081 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Infectious Diseases Animal Science and Zoology Parasitology |
spellingShingle |
Infectious Diseases Animal Science and Zoology Parasitology DOLNIK, OLGA V. METZGER, BENJAMIN J. LOONEN, MAARTEN J. J. E. Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
topic_facet |
Infectious Diseases Animal Science and Zoology Parasitology |
description |
SUMMARY For Isospora (Protozoa: Eimeriidae) parasites of passerine birds, diurnal periodicity of oocyst output is a well-described phenomenon. From the temporal zone to the tropics, oocyst production is correlated with the light-dark cycle, peaking in the afternoon hours. However, nothing is known about the existence of diurnal periodicity of these parasites in the birds of High Arctic environments, under permanent light during summer. We sampled free-ranging Snow Bunting (Aves: Passeriformes), on Svalbard in summer and tested oocysts output of Isospora plectrophenaxia. Here we show that under the permanent light conditions of Arctic summer in the wild, Isospora plectrophenaxia , a parasite of the Snow Bunting, still keeps the 24-h rhythm of oocyst output with the peak in the post-meridiem hours, despite the absence of diurnal periodicity in host's activity. Our findings prove the ability of avian Isospora to invoke alternative cues for synchronizing the circadian rhythms. Possible cues and adaptive significance of diurnal periodicity of parasite output in High Arctic are discussed. The maintenance of synchronization and timing of the parasite life-cycle stages is under positive selection pressure even in permanent daylight in the Arctic. |
format |
Article in Journal/Newspaper |
author |
DOLNIK, OLGA V. METZGER, BENJAMIN J. LOONEN, MAARTEN J. J. E. |
author_facet |
DOLNIK, OLGA V. METZGER, BENJAMIN J. LOONEN, MAARTEN J. J. E. |
author_sort |
DOLNIK, OLGA V. |
title |
Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
title_short |
Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
title_full |
Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
title_fullStr |
Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
title_full_unstemmed |
Keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian Isospora parasites cycle in the High Arctic |
title_sort |
keeping the clock set under the midnight sun: diurnal periodicity and synchrony of avian isospora parasites cycle in the high arctic |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0031182011000795 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011000795 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Snow Bunting Svalbard midnight sun |
genre_facet |
Arctic Snow Bunting Svalbard midnight sun |
op_source |
Parasitology volume 138, issue 9, page 1077-1081 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182011000795 |
container_title |
Parasitology |
container_volume |
138 |
container_issue |
9 |
container_start_page |
1077 |
op_container_end_page |
1081 |
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1792496697572589568 |