著者
岡田 彌一郎
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.43, no.508, pp.69-70, 1931-03-15
著者
Mukai Takahiko Sato Torao Naruse Kiyoshi Inaba Kazuo Shima Akihiro Morisawa Masaaki
出版者
社団法人日本動物学会
雑誌
Zoological science (ISSN:02890003)
巻号頁・発行日
vol.13, no.1, pp.175-183, 1996-02-15
被引用文献数
1

The genetic relationships and taxonomic status of 7 taxa belonging to the genus Tridentiger (Pisces, Gobiidae) were investigated by means of analysis of allozymic variation at 14 loci. The results suggest that the two taxa "T. obscurus" and "T. brevispinis" which are sympatric and morphologically similar are reproductively isolated and are highly divergent from each other (the genetic distance values are 0.501-0.707). It is also suggested that "T. brevispinis" and "T. kuroiwae" are genetically different enough from each other to deserve subspecies at least. The other 4 taxa, "T. barbatus", "T. nudicervicus", "T. trigonocephalus" and "T. bifasciatus", are genetically divergent each and are considered to be 4 biological species. A dendrogram showing the phylogenetic relationships of the 7 taxa was constructed from the genetic distances.

5 0 0 0 人魚の話

著者
N. M.
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.1, no.1, 1888-11-15
著者
五味 義尚
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.40, no.474, pp.165-166, 1928-04-15
著者
有馬 四郎
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.61, no.9, pp.275-277, 1952-09-15

The composition of urine of Rhacophorus schlegelii var. arborea and Rana nigromaculata taken from the bladder was qualitatively analysed, in order to compare with that of the fluid in the peri-vitelline space of the early empryos of Rhacophorus schlegelii var. arborea. RICHARD, BORDLEY, WALLKER and HEUDRIX ('33) verified the existence of uric acid, phosphate, creatinine and chlorine, but not the other organic and inorganic constituents in the urine of Rana pipiens. The present study of analysing the urine of Rana nigromaculata reveals the presence of sodium-ion, chlorine-ion, potassium-ion, phosphate-ion, sulphate-ion, calcium-ion and ammonium-ion, and besides them, nitrate-ion and nitrite-ion in the case of Rhacophorus-urine as the inorganic constituents. As the organic substances, the urine of the two species contains uric acid and urea, but not any trace of creatinine so far as the WEYL reaction is consulted. The urine of Rana nigromaculata in summer months contains uric acid and urea in higher concentration than in winter months. On the basis of the present analysis the chief end-product of the protein metabolism of Amphibia seems to be urea, since the uric acid is contained in much low concentration in the urine of Amphibia.
著者
久保田 一男
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.24, no.280, pp.97-98, 1912-03-15
著者
宮尾 嶽雄 両角 徹郎 両角 源美 花村 肇 佐藤 信吉 赤羽 啓栄 酒井 秋男
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.72, no.7, pp.187-193, 1963-07-15
被引用文献数
6

The authors investigated the seasonal differences of sex ratio, body weight, percentage of pregnant female and testicle size in two species of the field mice, Apodemus argenteus and Clethrionomys andersoni, collected from April, 1962 to March, 1963, in the subalpine forestzone (Tsuga diversifolia-Abies Mariesii forest zone, alt. 1,800-2,400m) on Mt. Yatsugatake in Honshu. Toral number of collected specimens was 308 Apodemus ar genteus and 616 Clethrionomys andersoni. 1) The number of males was larger than that of females in all months except August in Clethrionomys andersoni (♀ 56.7%), and July in Apodemus argenteus (♀ 54.6%), during the height of the breeding season (Fig. 1). 2) From the histograms of the body weight, the following tendencies were noted. Young mice appeared from July to October in Clethrionomys andersoni, and from June to September in Apodemus argenteus. Old adults disappeared from November to March in Clethrionomys andersoni, and from August in Apodemus argenteus. In both species, the developmental period of body weight generally coincided with the spring breeding season (Fig. 2 and Fig. 3). The life span of these species was supposed at about 1 year. 3) The maximum monthly pregnancy rate was attained in June in both species (Fig. 4). The yearly average embryo size was 3.3 in Clethrionomys andersoni and 3.9 in Apodemys argenteus. 4) The monthly average testicle sizes were about 10 mm. from April to July in both species. But they were about 4 mm. from October to March (Fig. 5).
著者
宮尾 嶽雄 両角 徹郎 両角 源美 花村 肇 赤羽 啓栄 酒井 秋男
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.73, no.7, pp.189-195, 1964-07-15
被引用文献数
2

The present paper deals with the distribution and breeding season of Smith's red-backed vole (Eothenomys smithi) in the subalpine forest zone (Tsuga diversiforia-Abies Mariesii forest zone, alt. 1,300-2,400m)on Mt. Yatsugatake in Honshu, Japan. By using snap traps, a survey was made every August in 1957, 1959, 1960 and 1961, and every month from April 1962 to March 1964. 1. In the subalpine forest zone, Anderson's red-backed vole (Clethrionomys adersoni) and the wood mouse (Apodemus argenteus) were the most abundant species. E. smithi is distributed widely in this area, but the population density was in general low, although in some localities it was high, as in areas with haevy undergrowth. E. smithi occurred with Clethrionomys andersoni and there was not observable habitat segregation between them. 2. The average tail length and hind foot length was 43.09mm and 16.32mm, respectively. 3. Pregnant females were found from May to October, and the maximum monthly pregnancy rate was attained in July. The yearly average number of embryoes was 2.3. Out of 32 females examined, 6(18.7%)had three pairs of mammae and 26 (81.3%) had two pairs of mammae. The monthly average testicle sizes increased quickly in spring and attained a maximum in June, after which their size was quickly reduced. 4. It is known that E. smithi occurs in forested regions on Honshu, Shikoku and Kyushu in Japan, but recently Imaizumi (1957) distinguished a new variety E. smithi occurring in the northern part of Honshu (including Mt. yatsugatake) from those in the southern part of Honshu, Shikoku and Kyushu, and he named the former E. kageus. He suggested that E. kageus has two pairs of mammae and that E. smithi has three pairs. The present results, however, show that the color, body measurements and habitat of E. kageus are very close to those of E. smithi, and further that the specimens having both types of mammae are found in the same area on Mt. yatsugatake. Thus the difference in the number of mammae betwwn E. kageus and E. smithi may be due only to individual variation.
著者
宮尾 嶽雄 両角 徹郎 両角 源美 赤羽 啓栄 酒井 秋男 花村 肇
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.74, no.3, pp.76-81, 1965-03-15

The authors certified that five species of insectivora inhabit the subalpine forest zone (alt. 1,800-2,400m) of Mt. Yatsugatake. They are Euroscaptor mizura, Urotrichus talpoides, Dymecodon pilirostris, Sorex shinto and Chimarrogale platycephala. From April, 1962 to March, 1964, the authors collected small mammals monthly by snap traps in the subalpine forest zone on Mt. Yatsugatake in Honshu. The total number of captured mice and voles was 1,577. The number of moles and shrews taken was 387 with the following breakdown: Urotrichus talpoides 25, Dymecodon pilirostris 257, Sorex shinto 105. It was noted that larger number of Dymecodon pilirostris and Sorex shinto appeared in June and in winter. Pregnant females were found in May (2 specimens) in Urotrichus talpoides, in May (3) and July (3) in Dymecodon pilirostris, in May (2) and June (5) in Sorex shinto. The average embryo sizes of each species were as follows: Urotrichus talpoides 4.5, Dymecodon pilirostris 3.7, Sorex shinto 3.8. Mammal formula of each species examined are shown in Table 3. The monthly average testicle sizes advance rapidly to the maximum after winter in Dymecodon pilirostris and Sorex shinto, but after which their size are quickly reduced. In Dymecodon pilirostris and Sorex shinto, from the frequency distribution table of body weight, the following tendencies are noted: wintered animals grow repidly and reach maturity from April to July. But breeding ceases in August mainly because the parent generation is rapidly dying off by October, completely so by November. Young come into the populations from August onwards, predominating from August and overwinter without coming into breeding conditions. The life span of these species is supposed to be about 1-1.5 years.
著者
木場 一夫
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.50, no.1, pp.13-21, 1938-01-15

The present paper deals with the morphological peculiarities and the habitats Branchinella kugenumaensis (C. ISHIKAWA) found in Manchoukuo. 1. The occurrence of this species in Manchoukuo has been known from Mukden, Anzan and Kaizyo. 2. It is found always in astatic waters which are as warm as 29°-34℃ in summer and are neutral or often remarkably alkaline (pH 7.0-8.5). 3. The time of its first appearancein Mukden has yet been ascertained, but it entirely disappears in the latter half of September. 4. The morphological peculiarities and the coloration in life in the Manchurian forms are given in detail. 5. The total length of the body attains 35mm in the largest female specimen collected in Mukden in September. Such a large specimen has never been recorded in any other localities. 6. The number of eggs in the ovisac was from 336 to 915 in the three matured females collected in Mukden.
著者
大島 廣
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.45, no.536, pp.294-297, 1933-06-15
著者
谷津 直秀
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.26, no.304, 1914-02-15
著者
竹脇 潔
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.46, no.546, pp.163-165, 1934-04-15