Developmental expression of penile reflexes and copulatory behavior in male rats
| Autor: | Toru R. Saito, Haruo Hashimoto, Satoshi Soeta, Toshihiro Oikawa, Naoki Moritani, Misao Terada |
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| Rok vydání: | 2003 |
| Předmět: |
Male
General Veterinary business.industry Physiology General Medicine Anatomy General Biochemistry Genetics and Molecular Biology Rats Sexual Behavior Animal Pregnancy Male rats Copulation Reflex Medicine Animals Animal Science and Zoology Female Young adult Rats Wistar business Penile reflexes Penis |
| Zdroj: | Experimental animals. 52(2) |
| ISSN: | 1341-1357 |
| Popis: | First, pubertal development of the penile reflexes, e.g., erections, cups and flips in Wistar-Imamichi male rats was investigated following sheath retraction. Second, the penile reflexes and copulatory behavior in the above males were compared between 10 and 44 weeks of age. The penile reflexes in Wistar-Imamichi rats began to appear from day 26, and all males displayed full components of the reflexes on day 47. The occurrence rates and mean numbers of erections, cups and flips in aged adults were significantly low, compared with the young adults. Also, in the observation of copulatory behavior the occurrence rate of ejaculations, and mean numbers of intromissions and ejaculations in aged adults were significantly lower than that in young adults. These results of the present study may suggest that the decrease of copulatory behavior in male rats with age results from the dysfunction of the penile reflexes with age. |
| Databáze: | OpenAIRE |
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