Kiyoaki Matsubayashi
Biographic Data
| ID | 4146299 |
|---|---|
| NAME | Kiyoaki Matsubayashi |
| GIVEN NAMES | Kiyoaki |
| FAMILY NAME | Matsubayashi |
| SIGNATURE | MATSUBAYASHI K |
| AFFILIATIONS | Kyoto University |
| VERIFIED | No |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 15 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1978 |
| LATEST PUBLICATION YEAR | 2011 |
| H-INDEX | 1 |
A comparative study on testicular microstructure and relative sperm production in gorillas, chimpanzees, and orangutans
We performed histological analyses for comparing testicular microstructure between the gorilla, chimpanzee, and orangutan. Testicular samples were obtained by autopsy or biopsy from 10 gorillas, 11 chimpanzees, and 7 orangutans from several zoos and institutes. The seminiferous epithelia were thick in the chimpanzee and orangutan but thin in the gorilla. Leydig cells in the interstitial tissue were abundant in the gorilla. The acrosomic system wa…
How costly are ejaculates for Japanese macaques?
Testicular histological examination of spermatogenetic activity in captive gorillas ( Gorilla gorilla )
To clarify the reproductive state of male gorillas, we performed histological examinations on the testicles of 10 male gorillas ( Gorilla gorilla ). The testicular samples were obtained by autopsy, and ordinal histological preparations were made for light microscopy. The poor spermatogenesis of this species was characterized by the following findings: First, spermatogenesis was evident in only four samples. Meiosis progressed in two samples, but …
A Comparative Study on Histology of Testes in Macaca nemestrina, M. fascicularis and M. fuscata
Seasonal changes in spermatogenic cell degeneration in the seminiferous epithelium of adult Japanese macaques (Macaca fuscata fuscata)
Observation on the cycle of the seminiferous epithelium in the Japanese macaque (Macaca fuscata) using semithin sections
Seasonal changes in the spermatogenic epithelium of adult Japanese macaques (Macaca fuscata fuscata)
Preliminary Report on Histological Characteristics of Male Reproductive Organs in Senile Japanese Macaques
Histological characteristics of male reproductive organs were observed macrographically and microscopically in Japanese macaques aged 20 years old or more. As the senility proceeded, testicular weight and the diameter of the seminiferous tubules decreased. Likewise, the weights and epithelial heights of the seminal vesicle and prostate gland decreased in old males. Histologically, a proliferation of interstitial tissue was notable in every organ …
Forthcoming in American Journal of Primatology
Population genetics of crab‐eating macaques ( Macaca fascicularis ) on the island of mauritius
Protein polymorphisms of the crab‐eating macaque ( Macaca fascicularis ) on the island of Mauritius in the southwest Indian Ocean were examined electrophoretically for 201 blood samples. All of the variant types detected were those found previously in the Asian populations. Genetic variability of the island population was estimated to be P poly = 16% and H = 6.5%, which was lower than that of the Asian populations. A tendency that a small number …
Clinical examinations on crab-eating macaques in mauritius
Effects of frequency of the tones on auditory event related potentials in monkeys (Macaca fuscata) under various hypobaric hypoxia conditions of simulated high altitudes
Changes in import of non-human primates after ratification of Cites (Washington Convention) in Japan
Longitudinal studies on annual changes in plasma testosterone, body weight and spermatogenesis in adult Japanese mankeys (Macaca fuscata fuscata) under laboratory conditions
A case of patas-vervet hybrid in captivity
Preliminary Report on Histological Characteristics of Male Reproductive Organs in Senile Japanese Macaques
Histological characteristics of male reproductive organs were observed macrographically and microscopically in Japanese macaques aged 20 years old or more. As the senility proceeded, testicular weight and the diameter of the seminiferous tubules decreased. Likewise, the weights and epithelial heights of the seminal vesicle and prostate gland decreased in old males. Histologically, a proliferation of interstitial tissue was notable in every organ …
A case of patas-vervet hybrid in captivity
Longitudinal studies on annual changes in plasma testosterone, body weight and spermatogenesis in adult Japanese mankeys (Macaca fuscata fuscata) under laboratory conditions
Changes in import of non-human primates after ratification of Cites (Washington Convention) in Japan
Effects of frequency of the tones on auditory event related potentials in monkeys (Macaca fuscata) under various hypobaric hypoxia conditions of simulated high altitudes
Clinical examinations on crab-eating macaques in mauritius
Forthcoming in American Journal of Primatology
Population genetics of crab‐eating macaques ( Macaca fascicularis ) on the island of mauritius
Protein polymorphisms of the crab‐eating macaque ( Macaca fascicularis ) on the island of Mauritius in the southwest Indian Ocean were examined electrophoretically for 201 blood samples. All of the variant types detected were those found previously in the Asian populations. Genetic variability of the island population was estimated to be P poly = 16% and H = 6.5%, which was lower than that of the Asian populations. A tendency that a small number …
Observation on the cycle of the seminiferous epithelium in the Japanese macaque (Macaca fuscata) using semithin sections
Seasonal changes in the spermatogenic epithelium of adult Japanese macaques (Macaca fuscata fuscata)
Preliminary Report on Histological Characteristics of Male Reproductive Organs in Senile Japanese Macaques
Histological characteristics of male reproductive organs were observed macrographically and microscopically in Japanese macaques aged 20 years old or more. As the senility proceeded, testicular weight and the diameter of the seminiferous tubules decreased. Likewise, the weights and epithelial heights of the seminal vesicle and prostate gland decreased in old males. Histologically, a proliferation of interstitial tissue was notable in every organ …
Seasonal changes in spermatogenic cell degeneration in the seminiferous epithelium of adult Japanese macaques (Macaca fuscata fuscata)
A Comparative Study on Histology of Testes in Macaca nemestrina, M. fascicularis and M. fuscata
Testicular histological examination of spermatogenetic activity in captive gorillas ( Gorilla gorilla )
To clarify the reproductive state of male gorillas, we performed histological examinations on the testicles of 10 male gorillas ( Gorilla gorilla ). The testicular samples were obtained by autopsy, and ordinal histological preparations were made for light microscopy. The poor spermatogenesis of this species was characterized by the following findings: First, spermatogenesis was evident in only four samples. Meiosis progressed in two samples, but …
How costly are ejaculates for Japanese macaques?
A comparative study on testicular microstructure and relative sperm production in gorillas, chimpanzees, and orangutans
We performed histological analyses for comparing testicular microstructure between the gorilla, chimpanzee, and orangutan. Testicular samples were obtained by autopsy or biopsy from 10 gorillas, 11 chimpanzees, and 7 orangutans from several zoos and institutes. The seminiferous epithelia were thick in the chimpanzee and orangutan but thin in the gorilla. Leydig cells in the interstitial tissue were abundant in the gorilla. The acrosomic system wa…
Biology (14 works) · Zoology (12 works) · Primate Behavior and Ecology (11 works) · Animal ecology (9 works) · Sperm and Testicular Function (7 works) · Animal Behavior and Reproduction (6 works) · Spermatogenesis (5 works) · Epithelium (4 works) · Medicine (4 works) · Anatomy (3 works)