著者
佐々木 忠次郎
雑誌
動物学雑誌 = Doubutsugaku zasshi (ISSN:00445118)
巻号頁・発行日
vol.41, no.490・491, 1929-09-15
著者
大島 正滿 Masamitsu Oshima
雑誌
動物学雑誌 = Doubutsugaku zasshi (ISSN:00445118)
巻号頁・発行日
vol.38, no.450, 1926-05-15

本報文に記載する淡水魚三種は大正十一年十月岸田久吉氏の亡友池田米造氏の手により東蒙古赤峰附近(遼河の上流老哈河流域)に於いて獲られたるものにして岸田氏の好意により本著者は數年後の今日之を査定するの光榮を得たる次第なり。右採集品は鯉科に属するもの二種並びに鰌科に属するもの一種を含めるが前者の内ウグヒ属のものは新種なり。他の二種は既に同一方面より記載せられたるものなれども採集せられたる尾數極めて少なく其原記載頗る不充分なるを以て後日此方面の淡水魚を研究する人士の參考に資せんが為め新種と併せて之を記載する事となせり。標本を提供せられたる岸田氏に對し茲に厚く感謝の意を表す。In the present paper is given a record of three species of fresh water fishes from East Mongolia obtained by late Mr. Yonezo Ikeda in the year 1922. The collection was very kindly forwarded to the writer by Mr. Kiukichi Kishida of the Zoology Department of the Imperial University of Tokyo, a friend of the collector, to whom the writer express his sincere thanks herewith.
著者
三谷 文夫 Fumio Mitani 京都大学農学部水産学教室 Department of Fishery Faculty of Agriculture Kyoto University
出版者
日本動物学会
雑誌
動物学雑誌 = Doubutsugaku zasshi (ISSN:00445118)
巻号頁・発行日
vol.65, no.2, 1956-02-15
被引用文献数
1

Having examined in detail 103 specimens of Hippocampus coronatus T. & S. obtained from the coast of Maizuru Bay for about two months from the end of June till that of August, 1955, I have found that the species shows not a few individual variations both in form and coloration. In Table 1 is shown the fluctuation in the number of caudal segments and in Table 2 that of dorsal and pectoral fin rays respectively. In Plate 1 and Figuer 3 are shown degrees of development of tubercles and fleshy appendages spreading like twigs on the surface of the body. The minimum size of the specimens with an elliptical area on the base of the tail having blackish brown pigments, which is a secondary sexual character of males, in 48.0mm. and of incubating males 63.0mm. in total legth, respectively. The species, as aforementioned, varies so greatly both in color and pattern of the body that it is roughly divided into 3 types, as shown in Figure 4; A) Specimens with brown blotches on the ground color of light, dark or orange yellow, B) those which are blackish brown or rather violet all over the body, and C) those with silvery blotches on the ground of uniformly greyish or dark green. The first type has a tendency to appear mainly in the specimens with few fleshy appendages; the secondtype, in the smaller ones with well-developed appendages; and the thirdtype, those including both larger and smaller ones with well-developed appendages. Hippocampus mohnikei Bleeker has been distinguished from H. coronatus T. et S., mainly in having a shorter snout, a lower coronet and more numerous fleshy appendages on the surface of the body. But these differnces between the two may not serve, I presume, for dividing the species into two different ones, as indicated in Figs. 1 and 2 and Table 3. Accordingly, H. mohnikei Bleeker may presumably be regarded as a synonym of H. coronatus T. et S.