著者

後藤 龍太郎 邉見 由美 Jonel Mangente Corral 塩﨑 祐斗 加藤 哲哉 伊谷 行

出版者

日本ベントス学会

雑誌

日本ベントス学会誌 (ISSN:1345112X)

巻号頁・発行日

vol.72, no.2, pp.79-82, 2018-03-31 (Released:2018-04-19)

参考文献数

21

被引用文献数

2

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Ikedosoma elegans (Ikeda, 1904) (Annelida: Echiura: Thalassematidae) is a rare, large deep-burrowing spoon worm that has been observed only in Japan. This species was first described based on the specimens collected from Misaki, Sagami Bay (Kanagawa Prefecture), eastern Japan, in 1902. Since the first description, this species has not been collected until the recent studies, which reported that I. elegans was collected from Hamana Lake (Shizuoka Prefecture), Boso Peninsula (Chiba Prefecture), and probably Amakusa, Ariake Sea (Kumamoto Prefecture). Furthermore, the specimen collected from Takasu, Seto Inland Sea (Okayama Prefecture) in 1975 was identified to be I. elegans. In this study, we present a new locality of this species in Japan. We collected a large individual of I. elegans with a probably commensal scale worm (Polynoidae: Polynoinae) by using a yabby pump in a mud flat in the Doki River Estuary, which is facing the Seto Inland Sea, in Marugame (Kagawa Prefecture), northern Shikoku Island. To the best of our knowledge, the present study is the first record of I. elegans from Shikoku Island and the second record from the Seto Inland Sea, following a 42-year-old record from Takasu, Okayama.

著者

邉見 由美 岩田 洋輔 伊谷 行

出版者

JAPANESE ASSOCIATION OF BENTHOLOGY

雑誌

日本ベントス学会誌 (ISSN:1345112X)

巻号頁・発行日

vol.69, no.2, pp.69-75, 2014-12-31 (Released:2016-02-06)

参考文献数

28

被引用文献数

7 7

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The gobies Eutaeniichthys gilli and Gymnogobius scrobiculatus were collected from burrows of the mud shrimp Upogebia yokoyai at low tide by digging and using a yabby pump from April 2007 to September 2008 at Susaki Bay, Kochi Prefecture, Japan. A total of 144 E. gilli and 103 G. scrobiculatus were collected. Densities of E. gilli and G. scrobiculatus collected by digging were 1.4 and 1.0 ind. per 0.25 m2, respectively. Symbiotic prevalences of E. gilli and G. scrobiculatus in mud shrimp burrows (the percentage of burrows occupied by E. gilli and G. scrobiculatus) collected using the yabby pump were 2.7% and 2.6%, respectively. Juveniles of E. gilli were collected in June; juveniles of G. scrobiculatus were collected in April. Adults of both species were collected year round. The present study clearly shows that E. gilli and G. scrobiculatus both use Upogebia burrows at low tide. In order to conserve these threatened and near-threatened gobies, conservation of this habitat as well as the mud shrimp might be needed.

著者

伊谷 行

出版者

高知大学

雑誌

基盤研究(C)

巻号頁・発行日

2016-04-01

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海洋底における多様な生物の生息場所利用という観点、また、巣穴利用の進化という観点から、巣穴共生性のベントスは魅力的な研究対象である。しかし、砂泥底の巣穴の中という生息場所の特殊性から研究が難しく、生態研究はほとんど行われていない。本研究の結果、テッポウエビ科の2種とモクズガニ科の3種において、無脊椎動物宿主の巣穴利用に関する共生生態について新しい知見を得た。さらに、巣穴共生性ハゼ類や宿主となる甲殻類、その巣穴構造についても、新知見が得られた。

著者

塩﨑 祐斗 邉見 由美 後藤 龍太郎 伊谷 行 有山 啓之

出版者

日本甲殻類学会

雑誌

CANCER (ISSN:09181989)

巻号頁・発行日

vol.29, pp.e130-e135, 2020-08-01 (Released:2020-09-09)

参考文献数

22

著者

邉見 由美 塩﨑 祐斗 山守 瑠奈 伊谷 行

出版者

日本ベントス学会

雑誌

日本ベントス学会誌 (ISSN:1345112X)

巻号頁・発行日

vol.74, no.1, pp.35-40, 2019-08-31 (Released:2019-09-09)

参考文献数

41

被引用文献数

1

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Pseudopinnixa carinata (Crustacea: Decapoda: Varunidae) is a monotypic rare brachyuran endemic to the Japanese coast. Seventeen specimens of the crab were collected from tidal flats in Yamaguchi and Kochi Prefectures, Japan. The collection from Kochi Prefecture sets a new record from the Pacific coast of Shikoku. A review of P. carinata collection sites and the habitat information revealed that the species is widely distributed in Honshu, Shikoku, and Kyushu, but has never been collected in the Ryukyu Islands and southern Kyushu. This crab inhabits intertidal to subtidal sandy sediments with its deepest record being at 55 m depth. Several studies have shown that the crab was collected from sediments where burrowing invertebrates were abundant. Crabs have been found inside burrows of the echiuran Urechis unicinctus, the gebiidean shrimp Upogebia sakaii, and the axiidean shrimp Nihonotrypaea japonica by digging sediments. In this study, some specimens were pulled out from the burrows of N. japonica and other callianassid shrimp species as well as those of the polychaete Arenicola brasiliensis by yabby pumps.

著者

佐藤 正典 加藤 哲哉 清家 弘治 伊谷 行

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.41, pp.30-39, 2016-08-30 (Released:2017-02-07)

参考文献数

25

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The scale worm Hesperonoe hwanghaiensis Uschakov and Wu, 1959 (Annelida: Polynoidae) is recorded from eastern Japan, based on four specimens collected from Akkeshi Bay, Hokkaido, and Kashima-nada, Ibaraki Prefecture. In Akkeshi Bay, three specimens (body length of a complete specimen: 40 mm, body width without parapodia: 4.0–4.5 mm), which are the largest of all Japanese specimens including previous records, were found from mud and sand sediments at intertidal flats, where a mud shrimp Upogebia major (De Haan, 1841) was collected simultaneously. In Kashima-nada, a complete mature male specimen (body length: 23 mm, body width without parapodia: 2.7 mm) was collected by dredging at subtidal sandy bottom at a water depth of 7.6 m, where another mud shrimp Austinogebia narutensis (Sakai, 1986) was collected simultaneously. The morphological characteristics of these specimens basically agreed with those of the previous records on the specimens collected from western Japan, with a diagnostic characteristic of the presence of a row of the more conical macrotubercles (up to 28 in an elytron of the complete specimen from Akkeshi Bay, and up to 3 in that from Kashima-nada) on the posterior surface of the elytra in the larger specimen. The present result suggests that the scale worm is commensal with not only U. major but also A. narutensis in its habitats extending from intertidal flats in semi-enclosed inner bays to subtidal bottom in open coasts.

著者

邉見 由美 乾 隆帝 後藤 龍太郎 伊谷 行

出版者

日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

pp.18-021, (Released:2018-09-10)

参考文献数

24

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Eight specimens of a threatened goby, Gymnogobius macrognathos (30.04– 38.87 mm in standard length), were collected on a mudflat characterized by abundant burrows of Upogebia major, at Akkeshi, Hokkaido, northern Japan in August 2017. Because G. macrognathos specimens were collected directly from U. major burrows by suction pump, and were also collected with U. major by digging sediment exposed at low tide, it was concluded that G. macrognathos utilized U. major burrows on the tidal flat. Gymnogobius mororanus and an unidentified species of Gymnogobius also utilized U. major burrows. The presence of G. macrognathos at Akkeshi represents the northernmost record of the species in Japanese waters, the isolated population being ca. 500 km north of the main distributional range of the species along the Pacific coast of Japan.

著者

佐藤 あゆみ 伊谷 行

出版者

南紀生物同好会

雑誌

南紀生物 (ISSN:03897842)

巻号頁・発行日

vol.54, no.2, pp.125-127, 2012-12

著者

伊谷 行 加藤 真

出版者

日本貝類学会

雑誌

Venus : journal of the Malacological Society of Japan (ISSN:13482955)

巻号頁・発行日

vol.61, no.3, pp.193-202, 2002-12-31

参考文献数

36

被引用文献数

1

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南西諸島を含む西日本に分布するオオノガイ科二枚貝類のクシケマスオガイについて, アナジャコ下目甲殻類の巣穴への共生と殻形態の変異を調査した。底質中の正確な位置を確認できた数個体のクシケマスオガイは, アナジャコ, ヨコヤアナジャコ, ミナミアナジャコ, ニホンスナモグリの巣穴の近くから採集された。その個体は, いずれも水管のある殻後部を巣穴に向けていたこと, 堆積物中深くに分布していたことから, この貝はアナジャコ類の巣穴に水管を開口する懸濁物食者であることが示唆された。巣穴への開口は確認できなかったが, クシケマスオガイはバルスアナジャコ, ナルトアナジャコ, Upogebia pugnaxの巣穴が多く存在する堆積物中からも採集された。殻形態の計測により, クシケマスオガイは成長とともに, 殻高/殻長比および殻幅/殻長比が大きくなるように成長することが分かった。これはこの貝が共生生活によって長い水管を必要としないことによるものかもしれない。また, 奄美大島産の個体は本州, 沖縄本島, 石垣島の個体より, サイズが小さく, 殻幅が厚い傾向が見られた。