Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions
Prolonged abnormal vomiting causes metabolic alkalosis. Many seabirds are known to feed their chicks by regurgitation. We hypothesized that metabolic alkalosis occurs in seabirds even under natural conditions during the breeding season. Adélie penguins Pygoscelis adeliae feed their chicks by regurgi...
Published in: | Physiological and Biochemical Zoology |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
University of Chicago Press
|
Subjects: | |
Online Access: | http://hdl.handle.net/2115/48302 https://doi.org/10.1086/597517 |
id |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/48302 |
---|---|
record_format |
openpolar |
spelling |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/48302 2023-05-15T18:03:49+02:00 Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions Sakamoto, Kentaro Q. Sato, Katsufumi Kato, Akiko Fukui, Daisuke Bando, Gen Naito, Yasuhiko Habara, Yoshiaki Ishizuka, Mayumi Fujita, Shoichi http://hdl.handle.net/2115/48302 https://doi.org/10.1086/597517 eng eng University of Chicago Press http://hdl.handle.net/2115/48302 Physiological and Biochemical Zoology, 83(2): 232-238 http://dx.doi.org/10.1086/597517 Distributed under licence by JSTOR. 488 article fthokunivhus https://doi.org/10.1086/597517 2022-11-18T01:02:20Z Prolonged abnormal vomiting causes metabolic alkalosis. Many seabirds are known to feed their chicks by regurgitation. We hypothesized that metabolic alkalosis occurs in seabirds even under natural conditions during the breeding season. Adélie penguins Pygoscelis adeliae feed their chicks by regurgitating food for 50-60 d until the chicks fledge. In this study, the concentrations of Cl-, HCO3-, Na+, K+, pH, and in the blood of breeding Adélie penguins were measured throughout the chick-rearing season. The pH of penguin venous blood shifted from 7.54 in the guarding period to 7.47 in the crèche period. Decreasing Cl- and increasing HCO3- blood concentrations in parents were associated with increasing mass of their brood in the guarding period, the early phase of the rearing season, indicating that regurgitating to feed chicks causes loss of gastric acid and results in relative metabolic alkalosis. The inverse trend was observed during the crèche period, the latter phase of the rearing season, when parents spent more time at sea and have fewer opportunities for gastric acid loss. This was assumed to be the recovery phase. These results indicate that regurgitation might cause metabolic alkalosis in breeding Adélie penguins. To our knowledge, this is the first report to indicate that seabirds exhibit metabolic alkalosis due to regurgitation to feed chicks under natural conditions. Article in Journal/Newspaper Pygoscelis adeliae Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Physiological and Biochemical Zoology 83 2 232 238 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
488 |
spellingShingle |
488 Sakamoto, Kentaro Q. Sato, Katsufumi Kato, Akiko Fukui, Daisuke Bando, Gen Naito, Yasuhiko Habara, Yoshiaki Ishizuka, Mayumi Fujita, Shoichi Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
topic_facet |
488 |
description |
Prolonged abnormal vomiting causes metabolic alkalosis. Many seabirds are known to feed their chicks by regurgitation. We hypothesized that metabolic alkalosis occurs in seabirds even under natural conditions during the breeding season. Adélie penguins Pygoscelis adeliae feed their chicks by regurgitating food for 50-60 d until the chicks fledge. In this study, the concentrations of Cl-, HCO3-, Na+, K+, pH, and in the blood of breeding Adélie penguins were measured throughout the chick-rearing season. The pH of penguin venous blood shifted from 7.54 in the guarding period to 7.47 in the crèche period. Decreasing Cl- and increasing HCO3- blood concentrations in parents were associated with increasing mass of their brood in the guarding period, the early phase of the rearing season, indicating that regurgitating to feed chicks causes loss of gastric acid and results in relative metabolic alkalosis. The inverse trend was observed during the crèche period, the latter phase of the rearing season, when parents spent more time at sea and have fewer opportunities for gastric acid loss. This was assumed to be the recovery phase. These results indicate that regurgitation might cause metabolic alkalosis in breeding Adélie penguins. To our knowledge, this is the first report to indicate that seabirds exhibit metabolic alkalosis due to regurgitation to feed chicks under natural conditions. |
format |
Article in Journal/Newspaper |
author |
Sakamoto, Kentaro Q. Sato, Katsufumi Kato, Akiko Fukui, Daisuke Bando, Gen Naito, Yasuhiko Habara, Yoshiaki Ishizuka, Mayumi Fujita, Shoichi |
author_facet |
Sakamoto, Kentaro Q. Sato, Katsufumi Kato, Akiko Fukui, Daisuke Bando, Gen Naito, Yasuhiko Habara, Yoshiaki Ishizuka, Mayumi Fujita, Shoichi |
author_sort |
Sakamoto, Kentaro Q. |
title |
Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
title_short |
Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
title_full |
Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
title_fullStr |
Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
title_full_unstemmed |
Metabolic Alkalosis due to Feeding Chicks in Breeding Adélie Penguins Pygoscelis adeliae under Natural Conditions |
title_sort |
metabolic alkalosis due to feeding chicks in breeding adélie penguins pygoscelis adeliae under natural conditions |
publisher |
University of Chicago Press |
url |
http://hdl.handle.net/2115/48302 https://doi.org/10.1086/597517 |
genre |
Pygoscelis adeliae |
genre_facet |
Pygoscelis adeliae |
op_relation |
http://hdl.handle.net/2115/48302 Physiological and Biochemical Zoology, 83(2): 232-238 http://dx.doi.org/10.1086/597517 |
op_rights |
Distributed under licence by JSTOR. |
op_doi |
https://doi.org/10.1086/597517 |
container_title |
Physiological and Biochemical Zoology |
container_volume |
83 |
container_issue |
2 |
container_start_page |
232 |
op_container_end_page |
238 |
_version_ |
1766174834563219456 |