Seasonal influence on testicular function of male raccoons, Procyon lotor

In order to clarify the breeding capability of male raccoons in Japan, the testes of raccoons, a nuisance animal, collected in Kanagawa Prefecture and Hokkaido were histologically inspected. Furthermore, testosterone concentrations in their blood were measured. The testosterone concentrations increa...

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Vydané v:Journal of Reproduction and Development Ročník 51; číslo 4; s. 477 - 482
Hlavní autori: Kaneko, K.(Azabu Univ., Sagamihara, Kanagawa (Japan). School of Veterinary Medicine), Akiya, Y, Sato, H, Tanaka, A, Aoki, H, Miyoshi, M, Abukawa, T, Mochizuki, M, Kawakami, S
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Japan THE SOCIETY FOR REPRODUCTION AND DEVELOPMENT 01.08.2005
Predmet:
Animals
BREEDING SEASONS
EPOCA DE APAREAMIENTO
ESPERMATOGENESIS
Immunohistochemistry
MACHO
MALE
MALES
MAPACHE
PERFORMANCE DE REPRODUCTION
Procyon lotor
RACCOONS
Radioimmunoassay
RATON LAVEUR
REPRODUCTIVE PERFORMANCE
REPRODUCTIVIDAD
SAISON D'ACCOUPLEMENT
Seasons
Seminiferous tubule
Seminiferous Tubules - anatomy & histology
SPERMATOGENESE
SPERMATOGENESIS
Testis - anatomy & histology
Testis - physiology
TESTOSTERONAS
TESTOSTERONE
Testosterone - metabolism
ISSN:0916-8818, 1348-4400
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Shrnutí:In order to clarify the breeding capability of male raccoons in Japan, the testes of raccoons, a nuisance animal, collected in Kanagawa Prefecture and Hokkaido were histologically inspected. Furthermore, testosterone concentrations in their blood were measured. The testosterone concentrations increased in winter and the diameter of seminiferous tubules and the spermatogenetic score decreased in summer for the animals captured in Kanagawa Prefecture. For the animals captured in Hokkaido, the diameter of seminiferous tubules did not change and the decrease of the spermatogenetic score in summer was slight. As the above results show, there is a breeding season in male raccoons in Japan, and the reduction of testicular function in summer was greater in animals captured in Kanagawa Prefecture than in animals captured in Hokkaido.
Bibliografia:2006003963
L53
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0916-8818
1348-4400
DOI:10.1262/jrd.16069