Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera)
The annual reproductive cycle has been investigated in the male pipistrelle bat Pipistrellus pipistrellus. Spermatogenesis occurs during summer and spermatozoa are produced in August and September. The seminiferous tubules then regress rapidly but sperm are stored throughout winter in the cauda epid...
Published in: | Journal of Zoology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
1974
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Online Access: | http://dx.doi.org/10.1111/j.1469-7998.1974.tb04096.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1974.tb04096.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x |
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crwiley:10.1111/j.1469-7998.1974.tb04096.x 2024-09-15T18:30:40+00:00 Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) Racey, P. A. Tam, W. H. 1974 http://dx.doi.org/10.1111/j.1469-7998.1974.tb04096.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1974.tb04096.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 172, issue 1, page 101-122 ISSN 0952-8369 1469-7998 journal-article 1974 crwiley https://doi.org/10.1111/j.1469-7998.1974.tb04096.x 2024-08-20T04:14:53Z The annual reproductive cycle has been investigated in the male pipistrelle bat Pipistrellus pipistrellus. Spermatogenesis occurs during summer and spermatozoa are produced in August and September. The seminiferous tubules then regress rapidly but sperm are stored throughout winter in the cauda epididymidis. Little change is apparent in the morphology of the Leydig cells throughout the year, and histochemical studies have revealed no seasonal differences in the occurrence of enzymes involved in steroidogenesis. The percentage yields of testosterone and androstenedione after incubation of testis and adrenal tissues in vitro with tritiated pregnenolone have been determined and measurements made of the concentration of these hormones in testes and whole blood. Although the highest levels of these androgens are synchronous with spermatogenesis, both continue to be produced by the testes during winter. Studies in castrated bats have confirmed these observations and indicate that the activity of the accessory reproductive organs during winter is dependent on testicular androgens. The testicular cycle of the pipistrelle is not thought to be complicated by adrenal androgenesis, or storage of androgens in the brown fat. The interrelationships between reproduction and hibernation in bats are discussed. Article in Journal/Newspaper Pipistrellus pipistrellus Wiley Online Library Journal of Zoology 172 1 101 122 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
The annual reproductive cycle has been investigated in the male pipistrelle bat Pipistrellus pipistrellus. Spermatogenesis occurs during summer and spermatozoa are produced in August and September. The seminiferous tubules then regress rapidly but sperm are stored throughout winter in the cauda epididymidis. Little change is apparent in the morphology of the Leydig cells throughout the year, and histochemical studies have revealed no seasonal differences in the occurrence of enzymes involved in steroidogenesis. The percentage yields of testosterone and androstenedione after incubation of testis and adrenal tissues in vitro with tritiated pregnenolone have been determined and measurements made of the concentration of these hormones in testes and whole blood. Although the highest levels of these androgens are synchronous with spermatogenesis, both continue to be produced by the testes during winter. Studies in castrated bats have confirmed these observations and indicate that the activity of the accessory reproductive organs during winter is dependent on testicular androgens. The testicular cycle of the pipistrelle is not thought to be complicated by adrenal androgenesis, or storage of androgens in the brown fat. The interrelationships between reproduction and hibernation in bats are discussed. |
format |
Article in Journal/Newspaper |
author |
Racey, P. A. Tam, W. H. |
spellingShingle |
Racey, P. A. Tam, W. H. Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
author_facet |
Racey, P. A. Tam, W. H. |
author_sort |
Racey, P. A. |
title |
Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
title_short |
Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
title_full |
Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
title_fullStr |
Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
title_full_unstemmed |
Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera) |
title_sort |
reproduction in male pipistrellus pipistrellus (mammalia: chiroptera) |
publisher |
Wiley |
publishDate |
1974 |
url |
http://dx.doi.org/10.1111/j.1469-7998.1974.tb04096.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1974.tb04096.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1974.tb04096.x |
genre |
Pipistrellus pipistrellus |
genre_facet |
Pipistrellus pipistrellus |
op_source |
Journal of Zoology volume 172, issue 1, page 101-122 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.1974.tb04096.x |
container_title |
Journal of Zoology |
container_volume |
172 |
container_issue |
1 |
container_start_page |
101 |
op_container_end_page |
122 |
_version_ |
1810472150524493824 |