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1 0 0 0 八重山群島石垣・西表両島の陸産貝類相とその生物地理学的意義

著者: 波部忠重知念盛俊
出版者: 国立科学博物館
雑誌: 国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日: vol.7, pp.121-"128-4", 1974
被引用文献数: 1

The Ryukyu Archipelago is located between Kyushu and Formosa and consists of seven groups, namely from north to south, Osumi, Tokara, Amami, Okinawa, Miyako, Yaeyama and Senkaku. The faunas of these groups are more or less different from one another and some biogeographical boundaries were proposed. They are the MIYAKE line between Kyushu and Osumi group, the WATASE line between Osumi and Amami groups, and the HACHISUKA line between Okinawa and Yaeyama groups. The land molluscan fauna of this archipelago originates from that of the central-south part of China with the most remarkable boundary between Osumi and Amami groups. The land molluscan species of Osumi group are mostly in common with those of Kyushu, Shikoku, Honshu and southern Korea, but since they are scarcely in common with those of Amami group, the WATASE line is considered to be a clear boundary. Although Pupinella funatoi, Spirostoma nakadai, Stereophaedusa stereoma, Yakuchloritis albolabris and Satsuma tanegashimae are endemic in the Osumi group, a little faunistic difference is found between Kyushu and Osumi group, and the MIYAKE line dose not seem to be important as the WATASE line. Tokara group is an intermediate area where the land molluscan fauna has many species in common with that of Amami group, whereas a small number of species of Osumi group distribute in the area. Next, between Amami-Okinawa and Miyako-Yaeyama areas there are common genera, but scarcely common species. Therefore, the HACHISUKA line is a significant boundary in land molluscan fauna. Between Amami and Okinawa groups, the former has the genera such as Pupinella, Trichelix, Chamalycaeus which are not distributed in the latter and some species specialize to subspecies in each group. Between Miyako and Yaeyama groups the difference of the land molluscan fauna is small. On the other hand, these two groups have the species such as Aegiste nackensii, A. osbeckii and Cyclotus taivanus in common with Formosa. The land molluscs such as Coniglobus tadai, Buliminopsis takarai and Tyrannozaptyx takarai from Senkaku group are similar to those species of Yaeyama group, excepting the species of the genus Nesiohelix, N. solida which shows close relationship of Senkaku group to Formosa and Continent of China. In Ishigaki and Iriomote Islands of Yaeyama group 45 species of land molluscs were collected, among which 16 species including a new species and 3 subspecies are endemic. The new species, Enteroplax yaeyamensis, of the family Strobilopsidae described herewith is the Philippine element.

2018-03-29 19:00:03
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https://ci.nii.ac.jp/naid/110004313669

1 0 0 0 OA カイガラカツギ属ヤドカリの1新種

著者: 武田正倫
出版者: 国立科学博物館
雑誌: 国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日: vol.18, pp.141-144, 1985
被引用文献数: 1

東京大学海洋研究所所属の調査船「淡青丸」によって(TK75-6次航海), 富山湾と付近海域から採集された甲殻類資料中に, ホンヤドカリ科カイガラカツギ属 Porcellanopagurus のヤドカリ1個体が見出された。採集地点は能登半島東側の飯田湾, 水深36m である。この属には従来5種(ニュージーランド南方海域に分布する P. edwardsi FILHOL, オーストラリア東南部産の P. tridentatus WHITELEGGE, チリー沖ファンフェルナンデス諸島産の P. platei LENZ, 相模湾から東支那海にかけて分布するカイガラカツギ P. japonicus BALSS, 小笠原諸島産のチビカイガラカツギ P. truncatifrons TAKEDA)が知られている。これらはヤドカリとはいえ, その和名が示すように, 巻貝を利用することはなく, 二枚貝の半片や破片を背負うという特異な習性をもっている。腹部は短小で, 尾節および尾肢は左右相称である。飯田湾産の標本はいわゆるカイガラカツギよりもチビカイガラカツギに近い。しかし, 額が発達し(チビカイガラカツギでは完全に切断された状態), 眼窩上縁が深くくぼみ, 額の幅と等長(ごく浅く, 額の幅より明らかに広い), 側縁が後方に開くため甲の輪郭は五角形に近い(後縁がほぼまっすぐであるため輪郭は横長の四角形)。甲の側縁最後歯は横に著しく突出しているのに対し, チビカイガラカツギではほとんど突出していないが, これが種の特徴といえるかどうか現在は断定できない。結果として, 飯田湾の個体はチビカイガラカツギに近縁の別種と考えられ, P. nihonkaiensis という学名を与えた。

2018-02-17 18:30:51
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https://ci.nii.ac.jp/naid/110004313031

1 0 0 0 OA 愛媛県および高知県産ニホンカワウソの骨計測学的研究

著者: 遠藤秀紀叶暁堤小菊洋行
出版者: 国立科学博物館
雑誌: 国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日: vol.33, pp.195-201, 2000

2017-08-17 14:00:17
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https://ci.nii.ac.jp/naid/110004313455

1 0 0 0 OA <国立科博専報>ヤマタイミンガサ(ニシノヤマタイミンガサを含む)とその仲間について

著者: 小山博滋
出版者: 国立科学博物館
雑誌: 国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日: vol.1, pp.71-76, 1968

Cacalia yatabei is a composite plant well known as a member of the Japanese flora. Although the occurrence of this species in the Rikuchu province was reported by TOBA in 1902,no specimen collected in the province was preserved in any main herbaria in Japan. On the course of my field trip, the considerable growth of this species was observed on Mt. Goyo as well as at the Osaki Peninsula. Having these new materials at hands, the phytogeography of C. yatabei is summarized in this paper and the taxonomica1 relationship between the species and its allied is also discussed. Cacalia yatabei MATSUM. et KOIDZ. in Bot. Mag. Tokyo 24 : 152 (1910) Type : HONSHU, Pref. Tochigi : Utanohama, Nikko, J. Matsumura s.n. (TI); KITAM. in Acta Phytotax. Geobot. 7 : 250 (1938), Comp. Jap. III : 223 (1942); HARA Enum. Sperm. Jap. II : 152 (1952); OHWI FI. Jap. Eng. ed. 885 (1965). In C. yatabei, NAKAI recognized two types concerning the number of florets and involucral scales per head; one with 5 florets and 5-(6) involucral scales per head and another with 3 florets and 3-(4) involucral scales per head. Considering these types and some other characters, NAKAI subdivided C. yatabei into two micro-species. The differences pointed out by NAKAI, however, seem to have no taxo-nomic significance at the species level. In addition, there are some intermediate forms between the two types. These two types, therefore, are better considered as infraspecific variations as treated by KITAMURA. Var. yatabei Miricacalia yatabei (MATSUM. et KOIDZ.) NAKAI in Jour. Jap. Bot. 14 : 641(1938) Five florets and 5-(6) involucral scales per head. Var. occidentalis F. MAEKAWA ex KITAM. in Acta Phytotax. Geobot. 7 : 250(1938), Comp. Jap. III : 224 (1942); HARA Enum. Sperm. Jap. II : 152 (1952); OHWI Fl. Jap. Eng. ed 885 (1965) -Miricacalia maekawae NAKAI 1.c. 642 Type : HONSHU, Pref. Nara : Mt. Ohdaigaharayama, S. Sakaguchi s. n. (TI). Three florets and 3-(4) involucral scales per head. As shown in Fig. 1,this species occurs mainly along the Pacific coast of Japan. The northern limit of the distribution coincides well with the border of the deepest (more than 50cm) snowfall region. The dispersal of the plant seems to be related, at least partly, to thawing. Similar distribution pattern is known in some other Japanese plants (e.g., Veronica Miqueliana, etc.). In his revision of the Japanese composite plants, KITAMURA proposed Sect. Taimingasa including the following species : C. amagiensis, C. peltifolia, C. yatabei, C. firma and C. pseudotaimingasa. Among these species, C. peltifolia is fairly unique by its peculiar peltate leaves and its cellular construction of leaf hairs (Fig. 3-F). Cacalia amagiensis, C. firma and C. pseudotaimingasa are taxonomically related to C. yatabei. These four species have leaves with triple-ribbed venation, but the leaf margin is considerably different in serration one another. In C. firma the leaves are slightly lobed, while in C. yatabei they are deeply lobed. The leaves of C. pseudotaimingasa are intermediate between the two. Leaves of C. amagiensis are almost entire, but are more or less lobed in some specimens. Geographically, both C. firma and C. pseudo-taimingasa occur in Korea (Fig. 2); C. amagiensis is found only from Izu Peninsula; C. yatabei is widely distributed in Japan but limited south of the Kitakami Mountains. Considering this distribution, it can be assumed that the ancestor of C. yatabei may had come from Korea Peninsula across Tsushima Strait and spreads northeastwards along the Pacific side of the Japanese Islands up to the Kitakami Mountains.