著者

渡瀬 庄三郎

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.17, no.200, pp.119-123, 1905-06-15

著者

渡瀬 庄三郎

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.23, no.269, pp.109-110, 1911-03-15

被引用文献数

2

著者

渡瀬 庄三郎

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.20, no.237, pp.255-257, 1908-07-15

著者

渡瀬 庄三郎

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.12, no.137, pp.83-92, 1900-03-15

著者

渡瀬 庄三郎

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.20, no.241, pp.495-496, 1908-11-15

著者

渡瀬 庄三郎

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.23, no.267, pp.20-23, 1911-01-15

被引用文献数

1

著者

大島 正満

出版者

日本動物学会

雑誌

動物学雑誌 (ISSN:00445118)

巻号頁・発行日

vol.68, no.7, pp.259-262, 1959-07

---

It was affirmed previously by means of continuous breeding experiments carried on by the former Director of the Fisheries Experiment Station of Gifu Prefecture(1924-1927) that the hybrid between the sea-run type of Oncorhynchus masou and river-type of Oncorhynchus rhodurus is fertile, while the back-cross between F_1 and the latter is entirely sterile instead. The most clear specific difference between the two river-types of the above mentioned Oncorhynchus are (1) the colouration of the round spots scattered above and below of the lateral line and (2) arrangement of the circuli in the somatic scales. In the artiffcially crossed hybrid black spots of Oncorhynchus masou reveals as an apparently dominant character while crimson spots of Oncorhynchus rhodurus subsides as recessive character while the concentric circular circuli of Oncorhynchus rhodurus becomes dominant to the broken external circuli of Oncorhynchus masou. Whether such cross exists in nature or not was a question among ichthyologists long time since. Quite recently, however, dubiuous specimens supposed to be the river from of Oncorhynchus masou have been obtaind in the upper stream of Tenriu River, mingling with 'Amago' the river-type of Oncorhynchus rhodurus. Specimens obtained by Mr. Takeo Iwasaki of Ina City has been forwarded very kindly for examination. The writer came to conclusion that the specimens exposed is really the hybrid between two species of Oncorhyuchus although intrudence of Oncorhynchus masou into Tenriu tributaries is not solved yet. In the present paper is given the description of naturally produced hybrid between Oncorhynchus masou and Oncorhynchus rhodunus, given the new name Oncorhynchus hybridus sp. nov. (Japanese name 'Hiraki-masu'). Appreciations are due to Mr. Takeo Iwasaki by whose efforts such interesting specimens came to the writer's hand.

著者

黒田 長礼

出版者

日本動物学会

雑誌

動物学雑誌 (ISSN:00445118)

巻号頁・発行日

vol.69, no.9, pp.277-279, 1960-09

---

In Japan there have been collected only four wild specimens of what we call the Female Mallard assuming the male plumage. Among these intersex specimens, no. 2 example which came from Teganuma, Chiba Prefecture, was studied by Dr.Yamashina ('48) and was found to have had its right and left ovaries turned into testes. Concerning the remaining examples the same phenomena have been seen in the old females, such as the Mandarin Duck, the Teal and the Pintail, which must have been brought about by the shrinkage or some other disorder of their ovaries. Bluba ossea, an organ belonging to trachea, peculiar to the male duck, does not exist in these intersex specimens and proved not te be affected by means of sex hormone.

著者

篠原 圭三郎

出版者

日本動物学会

雑誌

動物学雑誌 (ISSN:00445118)

巻号頁・発行日

vol.72, no.10, pp.300-302, 1963-10

---

Nedyopus venustus sp. nov. Body Iength about 18mm, width about 1.3mm in the male. General colour is brown with a wide light longitudinal stripe extending on the middorsal surface the collum to the tail excluding the head. The keels, sternites and legs are yellow but tibia and tarsus of legs have a brown tinge. The dorsal surface is glabrous, and many conspicuous furrows are present on lateral and upper surfaces of the keel. The lateral carinae extend from the first to the sixth dorsal segment, the seventh and posterior segments having none. The fifth sternite of the male possesses a hairly flat lamina, the anterior margin of which curved in slightly. Gonopod of male : Hairly prefemur has a small process on the inner surface of its distal end. the base of femur is not retrograde as is that of N. tambanus, but expands markedly in a proximal direction as shown in the figure. The seminal groove branch runs forward or downward. Ratio of length to width of the male gonopod excluding the prefemur is about 2 : 1. Holotype : One male, Mt. Kirishima of Pref. Kagoshima, April 22, 1956 collected by Mr. S. Koshiyama, and preserved in the auther's collection. Kopidoiulus longus sp. nov. Body length is about 38mm in the male. The general colour is darkish brown, but metazonite possessas brown spots, and the dorsum seems to have many lateral stripes on account of the light stripes on the posterior of each segment. The sternites and the legs are yellow. The anal segment is deep brown. The number of segments is 49. The crypeus is hairly, but setigerous foveolae possess 2 + 2. Ocelli number about thirty. Few transverse furrows are present on the prezonites, and the striate portions of metazonites exist below the level of the repugnatorial pores, the dorsal surface being smooth. The first legs are transformed into long, stiff and stick-like five articles curved deeply as a whole. At the distal end of the fifth article is situated a very small process which is probably a degenerate claw. Gonopod : The anterior gonopod consists of a telopodite and a coxal process. Telopodite is spindle shaped having a seta on the inner surface of the distal end. The coxal process is long, with a small blade situated on one side of the distal half, and a few short seta-like processes on the basal half. Posterior gonopod is a long, slightly bent slender blade, with a ciliated end. The gonopods of the male are represented in the figure. Holotype : One male, Mt. Daisetsu, Hokkaido, July 24, 1957, collected by Dr. H. Kobayashi, and preserved in the auther's collection.

著者

朝日 稔 小島 和子 伊藤 徹魯

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.87, no.4, 1978-12-25

被引用文献数

1

著者

江原 昭三 徳田 御稔

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.63, no.3, pp.82-83, 1954-04-15

著者

芳賀 良一 下泉 重吉 恩藤 芳典 徳田 御稔

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.65, no.3, 1956-04-15

著者

金久 武晴 川村 智次郎 徳田 御稔 団 勝磨

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.65, no.3, pp.174-175, 1956-04-15

著者

徳田 御稔 鹿野 忠雄

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.2, pp.84-87, 1938-02-15

---

Rattus mindanensis is a rat common in the Phillippine Islands. The northern limit of the range of the species has been known to be the Babuyanes Islands. One of the authors, KANO obtained two specimens of the rat from Botel-Tobago in his exploration of the island carried out in 1937. The specimens were studies by TOKUDA and has been ascertained as belonging to the named species. This rat seems to be endemic to the locality, since the islanders believe it to be a native rat, calling it by a name of "Karamrirara" to distinguish it from "Karam-riraol" of the cosmopolitan rats. If the rat is really endemic to the island, the occurrence of the species in Botel-Tobago will bear an important significance to the paleogeography of this and neighbouring islands, favouring KANO's view of the comparative recency of the hypothetical land-bridge between Luzon and Botel-Tobago through Babuyanes and Batanes, since this rat of Botel-Tobago is scarecely diverged from the form of the Philippine Islands.

著者

徳田御 稔

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.159-160, 1934-04-15

著者

徳田 御稔

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.59, no.9, pp.210-213, 1950-09-15

被引用文献数

3

---

In reference to the distribution and territories occupied by certain closely-related species, Mayr (1947) has proposed the use of the terms "sympatric" and "allopatric." The former applies to those species which occupy the same geographical areas; the latter to those species which occupy separate geographical areas. In the case of "sympatric" species there exist successive grades of coincidence in the territories occupied ranging from perfect coincidence of territoy to the maintenance of only a small overlapping margin. In any case there must be a cortain biological gap or "break" among the "sympatric" species which prohibits them from interbreeding. Taxonomically good species frequently hold this type of distribution. On the other hand, in the case of "allopatric" species we find those which are only maintained by geographical isolation. At least theoretically there exist two formerly interbreeting colonies or incipient species siolated from each other rather recently so that they will easily interbreed if the barriers are withdrawn. We can find a number of "allopatric" examples in Japan, especially among the related species isolated from each other by Tsugaru-strait, so that while one form may be restricted to Hokkaido another is confined to Hondo. Some of them are good species so far as judged by morphological differences, while others belong to 'not good species' maintained only by the geographical barrier. Our interests are more profound in the case of "allopatric" species without geographical isolation, since in this case there must exist some other intrinsic reasons for their separation within the distributional range. In the book of Mayr we find examples of this type of "allopatric" species mainly in mammals and birds. While in lower forms, for example in European toads and frogs, Mayr stressed discovery that the two related forms frequently produce hybrids at a few marginal regions where ranges of each species overlap. In the higher forms of vertebrates there seems to exist some psychological reason to prohibit the crossing of species in the overlapping zone, even though they can be hybridized easily in captivity. At any rate the "allopatric" species present problems which require more considerable research in the wide field of biological study. I have shown in the present report two distinct cases of "allopatric" species of small mammals revealed by the comparative study of their distribution according to elevation on Mt. Yatsugatake and Mt. Ontake. Both mountains are situated in central Hondo within the same bio-geographical area. Two species of Clethrionomys (andersoni=Ca and smithii=Cs) and two species of Urotrichus (talpoides=Ut and pilirostris=Up) have been the subjects of my study. In figs. 1 and 2, I have shown the exact location of the stations where I trapped these species. It seems remarkable that Clethrionomys smithii which is restricted to the lower slopes on Mt. Yatsugatake, expands its range higher than 2000m. on the eastern slope of Mt. Ontake where other rival species are absent because of the lack of favourable conditions.

著者

深田 祝 徳田 御稔

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.63, no.3, 1954-04-15

著者

森脇 大五郎 岡田 豊日 大羽 滋 黒川 治男 徳田 御稔 江村 重雄 森 主一

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.63, no.3, pp.108-109, 1954-04-15

著者

徳田 御稔

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.554, pp.577-578, 1934-12-15

著者

徳田 御稔 田中 亮 大田 嘉四夫 伊谷 純一郎

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.66, no.2, 1957-03-15