A5103079064- Ichthyology and Marine Biology
- Bat Biology and Ecology Studies
- Fish Biology and Ecology Studies
- Fish biology, ecology, and behavior
- Fish Ecology and Management Studies
- Reproductive Biology and Fertility
- Marine animal studies overview
- Marine and fisheries research
- Reproductive Physiology in Livestock
- Paleontology and Evolutionary Biology
- Breast Implant and Reconstruction
- Parkinson's Disease Mechanisms and Treatments
- Identification and Quantification in Food
- Neuroendocrine regulation and behavior
- Fluorine in Organic Chemistry
- Crystal structures of chemical compounds
- Crystallography and molecular interactions
- Lipid metabolism and disorders
- Isotope Analysis in Ecology
- Parasite Biology and Host Interactions
- Cancer, Lipids, and Metabolism
- Physiological and biochemical adaptations
- Bone and Joint Diseases
Hokkaido University
2018-2024
Hakodate University
2024
Hokkaido Museum
2024
Japan Fisheries Research and Education Agency
2022-2023
Shinshu University
1984-1987
Kyushu University
1983-1984
Yamamoto Hospital
1984
It is now generally accepted that the nigrostriatal degenerative properties of parkinsonian-inducing agent 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine are mediated by brain monoamine oxidase B generated 1-methyl-4-phenylpyridinium metabolite (MPP+). In this article, results described ongoing efforts to evaluate MPP(+)-type neurotoxic potential haloperidol (HP)-derived pyridinium HPP+, a 1,4-disubstituted structural analog MPP+, which formed in humans and rats treated with HP. Previous...
Embryonic development in Japanese long-fingered bats proceeded very slowly during and after the delayed implantation period (mid-October to mid-December). The primitive amniotic cavity endoderm were formed before implantation. At preimplantation stage (before hibernation) corpus luteum cells appeared active, but became less active at (in hibernation). Activity was again apparent early placentation (after arousal).
In the Japanese long-fingered bat, when compared with baseline values during non-pregnancy in autumn, plasma progesterone concentrations were not significantly elevated delayed implantation stage that begins before bats enter hibernation. However, lower development occurs hibernation and rose rapid embryogenesis after arousal from spring. Changes corpus luteum volume corresponded closely those of values. Maintenance gravid females at 25 degrees C for 2 weeks winter resulted significant...
Gravid female Japanese long-fingered bats were kept in captivity without hibernation at elevated temperatures (23-25 degrees C) winter. The embryonic growth rate was accelerated and consequently parturition advanced by a period equivalent to that of exclusion from as compared with the wild population. corpus luteum became active, indicated an increase 'light' lutein cells experimental bat pregnant 15-mm embryo, but less active (more 'dark' cells) 2 hibernating control implanting blastocyst.
The placentae of the Japanese long-fingered bat were characterized by their morphological and functional transition from main placenta to accessory placentae. transformed an endotheliodichorial a haemodichorial (one layer syncytiotrophoblast one cytotrophoblast cells) condition. Degeneration was accompanied development two These developed on both sides (fetal side) placenta, subsequently converted (two layers haemomonochorial
Cristallisation dans Pbcn avec Z=4; affinement jusqu'a R=0,039 a partir des coordonnees atomiques determinees photographiquement (Uchida (1967). Bull. Chem. Soc. Jpn, 40, 2244-2248). La distance intramoleculaire I-I est de 2,726 A et les deux distances N...I intermoleculaires independantes sont 3,098 2,982 respectivement
The phylogenetic relationships of the families Cheilodactylidae and Latridae, plus related taxa, are examined from a detailed osteological perspective. monophyly each family is re-evaluated new classification proposed on basis relationships. A analysis characters in 67 transformation series showed Latridae to comprise monophyletic group nested within cheilodactylids. was non-monophyletic, but rather formed by clade including Cheilodactylus fasciatus C. pixi having sister relationship with...
Tracking migration of highly migratory marine fish using isotope analysis (iso-logging) has become a promising tool in recent years. However, application this method is often hampered by the lack essential information such as spatial variations ratios across habitats (isoscapes) and ontogenetic shifts target animals. Here, we test utility geostatistical to generate isoscapes δ 13 C 15 N western Pacific estimate values species. We first measured white muscle juvenile ( n = 210) adult 884)...
The spiny-scale pricklefish Hispidoberyx ambagiosus Kotlyar, 1981, the sole member of family Hispidoberycidae, is known from only a few specimens collected tropical waters Indo-West Pacific region. Because its phylogenetic position has not been well investigated, present study describes osteology, myology and other morphological features H. ambagiosus, reassesses species, relationships with related taxa. Many significant characters, including Tominaga’s organ, were newly discovered in...
A single specimen of the platycephalid fish Thysanophrys papillaris Imamura and Knapp, 1999, collected from Nha Trang, Vietnam, represents first record species western Pacific, previous records having been restricted to Indian Ocean (Timor, Arafura Andaman seas). is separable other members genus in 11 second dorsal-fin rays, 12 anal-fin 58–75 oblique body scale rows slanting downward forward below lateral line, snout longer than orbital diameter (ratio length/orbital 1.1–1.3), a (rarely 2)...
Four specimens (151–156 mm in standard length) of Beryx mollis Abe, 1959 were collected from the Nazca Ridge, southeastern Pacific Ocean. These represent first record species south-eastern Ocean and extend distributional range eastward by ca. 10,000 km New Caledonia, previously known eastern limit. Comparison with other regions reveals geographical variations some meristic characters species.