Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear
application/pdf Brown bears communicate with other individuals using marking behavior. Bipedal back rubbing has been identified as a common marking posture. Oily substances are secreted via enlarged sebaceous glands in the back skin of male bears during the breeding season. However, whether apocrine...
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The Japanese Society of Veterinary Science
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ftobihirouniv:oai:obihiro.repo.nii.ac.jp:00004205 2024-01-14T10:11:16+01:00 Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear Tomiyasu, Jumpei Kondoh, Daisuke 近藤, 大輔 Yanagawa, Yojiro Sato, Yoshikazu Sakamoto, Hideyuki Matsumoto, Naoya Sasaki, Kazuyoshi Haneda, Shingo 羽田, 真悟 Matsui, Motozumi 2018-05-01 application/pdf https://obihiro.repo.nii.ac.jp/record/4205/files/80_17-0689.pdf eng eng The Japanese Society of Veterinary Science 10.1292/jvms.17-0689 The Journal of Veterinary Medical Science 6 80 1034 1040 09167250 https://obihiro.repo.nii.ac.jp/record/4205/files/80_17-0689.pdf The Japanese Society of Veterinary Science 489.57 glycocomposition olfactory communication skin gland tree-rubbing Ursus arctos VoR 2018 ftobihirouniv 2023-12-15T00:48:56Z application/pdf Brown bears communicate with other individuals using marking behavior. Bipedal back rubbing has been identified as a common marking posture. Oily substances are secreted via enlarged sebaceous glands in the back skin of male bears during the breeding season. However, whether apocrine gland secretions are associated with seasonal changes remains unknown. The present study aimed to identify histological and histochemical changes in the secretory status and the glycocomposition of the apocrine glands in the back skin of male bears in response to changes in seasons and/or reproductive status. The apocrine glands of intact males during the breeding season were significantly larger and more active than those of castrated males during the breeding season and those of intact males during the non-breeding season. Lectin histochemical analyses revealed a more intense reaction to Vicia villosa agglutinin (VVA) in the cytoplasm, mainly Golgi zones of apocrine cells during the breeding season among castrated, compared with intact males. Positive staining for VVA was quite intense and weak in intact males during the non-breeding and breeding seasons, respectively. Ultrastructural analysis revealed VVA positivity in the Golgi zone, especially around secretory granules in apocrine cells. Changes in lectin binding might reflect a change in the secretory system in the apocrine cells. The present histological and histochemical findings of changes in the secretory status and glycocomposition of the apocrine glands according to the season and reproductive status suggest that these glands are important for chemical communication. journal article Other/Unknown Material Ursus arctos Obihiro University: Obihiro Archives of Knowledge (OAK) |
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Open Polar |
collection |
Obihiro University: Obihiro Archives of Knowledge (OAK) |
op_collection_id |
ftobihirouniv |
language |
English |
topic |
489.57 glycocomposition olfactory communication skin gland tree-rubbing Ursus arctos |
spellingShingle |
489.57 glycocomposition olfactory communication skin gland tree-rubbing Ursus arctos Tomiyasu, Jumpei Kondoh, Daisuke 近藤, 大輔 Yanagawa, Yojiro Sato, Yoshikazu Sakamoto, Hideyuki Matsumoto, Naoya Sasaki, Kazuyoshi Haneda, Shingo 羽田, 真悟 Matsui, Motozumi Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
topic_facet |
489.57 glycocomposition olfactory communication skin gland tree-rubbing Ursus arctos |
description |
application/pdf Brown bears communicate with other individuals using marking behavior. Bipedal back rubbing has been identified as a common marking posture. Oily substances are secreted via enlarged sebaceous glands in the back skin of male bears during the breeding season. However, whether apocrine gland secretions are associated with seasonal changes remains unknown. The present study aimed to identify histological and histochemical changes in the secretory status and the glycocomposition of the apocrine glands in the back skin of male bears in response to changes in seasons and/or reproductive status. The apocrine glands of intact males during the breeding season were significantly larger and more active than those of castrated males during the breeding season and those of intact males during the non-breeding season. Lectin histochemical analyses revealed a more intense reaction to Vicia villosa agglutinin (VVA) in the cytoplasm, mainly Golgi zones of apocrine cells during the breeding season among castrated, compared with intact males. Positive staining for VVA was quite intense and weak in intact males during the non-breeding and breeding seasons, respectively. Ultrastructural analysis revealed VVA positivity in the Golgi zone, especially around secretory granules in apocrine cells. Changes in lectin binding might reflect a change in the secretory system in the apocrine cells. The present histological and histochemical findings of changes in the secretory status and glycocomposition of the apocrine glands according to the season and reproductive status suggest that these glands are important for chemical communication. journal article |
format |
Other/Unknown Material |
author |
Tomiyasu, Jumpei Kondoh, Daisuke 近藤, 大輔 Yanagawa, Yojiro Sato, Yoshikazu Sakamoto, Hideyuki Matsumoto, Naoya Sasaki, Kazuyoshi Haneda, Shingo 羽田, 真悟 Matsui, Motozumi |
author_facet |
Tomiyasu, Jumpei Kondoh, Daisuke 近藤, 大輔 Yanagawa, Yojiro Sato, Yoshikazu Sakamoto, Hideyuki Matsumoto, Naoya Sasaki, Kazuyoshi Haneda, Shingo 羽田, 真悟 Matsui, Motozumi |
author_sort |
Tomiyasu, Jumpei |
title |
Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
title_short |
Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
title_full |
Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
title_fullStr |
Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
title_full_unstemmed |
Testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
title_sort |
testicular regulation of seasonal change in apocrine glands in the back skin of the brown bear |
publisher |
The Japanese Society of Veterinary Science |
publishDate |
2018 |
url |
https://obihiro.repo.nii.ac.jp/record/4205/files/80_17-0689.pdf |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
10.1292/jvms.17-0689 The Journal of Veterinary Medical Science 6 80 1034 1040 09167250 https://obihiro.repo.nii.ac.jp/record/4205/files/80_17-0689.pdf |
op_rights |
The Japanese Society of Veterinary Science |
_version_ |
1788066180597022720 |