著者

Daisuke Shimada Atsushi C. Suzuki Megumu Tsujimoto Satoshi Imura Keiichi Kakui

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.26, no.1, pp.49-63, 2021-03-22 (Released:2021-03-22)

参考文献数

81

被引用文献数

4

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Two new species of free-living marine nematodes, Odontophora odontophoroides sp. nov. and Parabathylaimus jare sp. nov., are described from the coastal sand of Langhovde, Lützow-Holm Bay, Dronning Maud Land, Antarctica. Odontophora odontophoroides sp. nov. is the only species in Odontophora Bütschli, 1874 that has bicuspidate odontia. Odontophora odontophoroides sp. nov. is similar to species in Odontophoroides Boucher and Helléouët, 1977 and Synodontium Cobb, 1920 in having bicuspidate odontia, but differs in having a didelphic reproductive system in females. Parabathylaimus jare sp. nov. differs from congeners in the unjointed inner labial and cephalic sensilla, the outer labial sensilla three-jointed in males and two-jointed in females, the position of the amphids, the shorter spicules, and the conical tail without long subterminal setae. Modified generic diagnoses and keys to species are included for Odontophora and Parabathylaimus De Coninck and Schuurmans Stekhoven, 1933. A new combination, Parabathylaimus arthropappus (Wieser and Hopper, 1967) comb. nov., is established.

著者

Daisuke Shimada Atsushi C. Suzuki Megumu Tsujimoto Satoshi Imura Keiichi Kakui

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.22, no.2, pp.151-159, 2017-11-25 (Released:2017-12-05)

参考文献数

61

被引用文献数

5

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A new species of free-living marine nematode, Oncholaimus langhovdensis sp. nov., is described from the intertidal zone of Langhovde (near Syowa Station), Dronning Maud Land, East Antarctica. It closely resembles 11 congeners in the conico-cylindrical tail shape present in males and amphid and excretory pore positions, short spicules, and Demanian system structure present in females. However, it mainly differs from these congeners in body size, de Man’s ratios, tail length and shape, and Demanian system structure present in females. Oncholaimus langhovdensis sp. nov. also resembles four congeners known only by females, but it can be distinguished from them based on the tail length and uvette position. In addition to O. langhovdensis sp. nov., two undescribed species (Tripyloididae gen. sp. and Axonolaimidae gen. sp.) and four unidentified species (Sphaerolaimus sp., Oncholaimidae gen. sp., Comesomatidae gen. sp., and Chromadorida fam. gen. sp.) were found from the same locality.

著者

島田 大輔 Daisuke Shimada

出版者

同志社大学一神教学際研究センター(CISMOR)

雑誌

一神教世界 = The world of monotheistic religions (ISSN:21850380)

巻号頁・発行日

vol.6, pp.64-86, 2015-03-31

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本稿は、戦前期日本における回教政策に関して、大日本回教協会を中心に実証・分析を加えたものである。従来の研究では、一次史料の収集・比較分析は不十分であり、必ずしも実態が明らかではなかった。第一に、あまり分析されてこなかった四王天延孝会長期も含めて、回教協会の組織運営・諸活動の実態を通史的に明らかにした。第二に、日本政府からの補助金・事業指示の分析をもとにして、大日本回教協会を、外務省の回教政策を実行するために設立された、外務省の外郭団体だと明らかにした。第三に、陸軍の回教政策とは異なった観点に立つ、外務省の回教政策の内実を明らかにした。外務省の回教政策とはすなわち、中東を中心に全イスラーム世界を対象とし、手法として文化工作を最重視することであった。極東占領地内に回教政策を局限した陸軍との間にはある種の棲み分けがなされていた。ただし、戦局の悪化、回教協会に対する大東亜省の影響力増の結果、以上の図式は崩されることになった。

著者

Daisuke Shimada Keiichi Kakui

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.25, no.2, pp.205-211, 2020-09-18 (Released:2020-09-18)

参考文献数

30

被引用文献数

1

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A new species of free-living marine nematode, Proplatycoma tsukubae sp. nov. (Enoplida: Leptosomatidae: Platycominae), is described from Japan. The specimens were obtained from sea-floor sediments collected at a depth of 117–202 m off the coast of Shimoda, Shizuoka Prefecture, Japan. Proplatycoma tsukubae sp. nov. is similar to P. africana (Gerlach, 1959) in the unilobed amphidial flaps. However, it differs from P. africana based on the much shorter amphidial flaps just reaching the anterior edge of the amphidial aperture, the accessory structure of the spicules being constricted at the middle and tapering toward both ends, the longer apophyses of the gubernaculum, and the blunt tip of the tail. The partial nucleotide sequences for the cytochrome c oxidase subunit I and the 18S rRNA regions in P. tsukubae sp. nov. are also presented for future applications in DNA barcoding or phylogenetic studies. Updated taxonomic keys to genera in the subfamily Platycominae and species in Proplatycoma are provided.

著者

Daisuke Shimada Megumu Tsujimoto Kentaro Watanabe

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.24, no.1, pp.61-67, 2019-05-25 (Released:2019-05-25)

参考文献数

23

被引用文献数

3

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A new species of free-living marine nematode (Chromadorida: Chromadoridae), Graphonema antarcticum sp. nov., is described. The nematode was found in the shallow water of Kita-no-ura, off Syowa Station in Lützow-Holm Bay, Antarctica. Graphonema antarcticum sp. nov. is similar to G. metuliferum Kito, 1981 in the ratios of the spicules length to the body diameter at the cloaca, the well-developed gubernaculum with L-shaped lateral pieces bending at an obtuse angle and equipped with minute denticles at the distal end, and the tail length in both sexes. However, G. antarcticum sp. nov. differs from the latter in having a larger body size and presence of the lateral differentiation. The new diagnosis of the genus and the key to the species are provided. Graphonema achaeta Platonova, 1971 was transferred to Endeolophos due to the absence of the lateral pieces of gubernaculum that are present in the genus Graphonema.