CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology)
A semi-lunar rhythm appeared to be in the chick weight-growth curve of the Short-tailed Shearwaters (Puffinus tenuirostris) and exactly found in feeding of the Sooty Shearwaters (Puffinus griseus) to their chicks before desertion by parents. These rhythms may be caused by periodicity in the availabi...
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ftnipr:oai:nipr.repo.nii.ac.jp:00005026 2023-05-15T18:02:00+02:00 CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) オカ ナリコ マルヤマ ナオキ / Nariko OKA Naoki MARUYAMA Irynej SKIRA 1987-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5026 http://id.nii.ac.jp/1291/00005026/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5026&item_no=1&attribute_id=18&file_no=1 en eng Proceeding Yamashina Institute for Ornithology Department of Environmental Science and Conservation, Faculty of Agriculture, Tokyo Noko University Department of Lands, Parks and Wildlife National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5026 http://id.nii.ac.jp/1291/00005026/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 1, 166-174(1987-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5026&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1987 ftnipr 2023-02-11T20:10:44Z A semi-lunar rhythm appeared to be in the chick weight-growth curve of the Short-tailed Shearwaters (Puffinus tenuirostris) and exactly found in feeding of the Sooty Shearwaters (Puffinus griseus) to their chicks before desertion by parents. These rhythms may be caused by periodicity in the availability of the krill, especially Australian krill (Nyctiphanes australis), the main food for chicks of both shearwaters. Comparing the chick growths in Tasmania with their mortality occurrences in Japan in over a four year study of the Short-tailed Shearwaters, the best growth year of 1980 corresponded to a low mortality year, while a poor growth year of 1984 was situated at the peak of a mass mortality period of 1983-1985 in Japan. In the worst growth year of 1986, the mass mortality did not occur along Japan but Australia and the island of Guam. Therefore, the growth of chicks at the breeding site in Tasmania and mortality occurrences in Japan, Australia and Guam have a mutual relation, and they could be governed by the annual fluctuations in abundance of krill in Australian regions. Report Polar Biology Proceedings of the NIPR Symposium on Polar Biology Puffinus tenuirostris National Institute of Polar Research Repository, Japan |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
A semi-lunar rhythm appeared to be in the chick weight-growth curve of the Short-tailed Shearwaters (Puffinus tenuirostris) and exactly found in feeding of the Sooty Shearwaters (Puffinus griseus) to their chicks before desertion by parents. These rhythms may be caused by periodicity in the availability of the krill, especially Australian krill (Nyctiphanes australis), the main food for chicks of both shearwaters. Comparing the chick growths in Tasmania with their mortality occurrences in Japan in over a four year study of the Short-tailed Shearwaters, the best growth year of 1980 corresponded to a low mortality year, while a poor growth year of 1984 was situated at the peak of a mass mortality period of 1983-1985 in Japan. In the worst growth year of 1986, the mass mortality did not occur along Japan but Australia and the island of Guam. Therefore, the growth of chicks at the breeding site in Tasmania and mortality occurrences in Japan, Australia and Guam have a mutual relation, and they could be governed by the annual fluctuations in abundance of krill in Australian regions. |
format |
Report |
author |
オカ ナリコ マルヤマ ナオキ / Nariko OKA Naoki MARUYAMA Irynej SKIRA |
spellingShingle |
オカ ナリコ マルヤマ ナオキ / Nariko OKA Naoki MARUYAMA Irynej SKIRA CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
author_facet |
オカ ナリコ マルヤマ ナオキ / Nariko OKA Naoki MARUYAMA Irynej SKIRA |
author_sort |
オカ ナリコ |
title |
CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
title_short |
CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
title_full |
CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
title_fullStr |
CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
title_full_unstemmed |
CHICK GROWTH AND MORTALITY OF SHORT-TAILED SHEARWATERS IN COMPARISON WITH SOOTY SHEARWATERS, AS A POSSIBLE INDEX OF FLUCTUATIONS OF AUSTRALIAN KRILL ABUNDANCE (Ninth Symposium on Polar Biology) |
title_sort |
chick growth and mortality of short-tailed shearwaters in comparison with sooty shearwaters, as a possible index of fluctuations of australian krill abundance (ninth symposium on polar biology) |
publisher |
Proceeding |
publishDate |
1987 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5026 http://id.nii.ac.jp/1291/00005026/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5026&item_no=1&attribute_id=18&file_no=1 |
genre |
Polar Biology Proceedings of the NIPR Symposium on Polar Biology Puffinus tenuirostris |
genre_facet |
Polar Biology Proceedings of the NIPR Symposium on Polar Biology Puffinus tenuirostris |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5026 http://id.nii.ac.jp/1291/00005026/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 1, 166-174(1987-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5026&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766171640912150528 |