著者

西 栄二郎 荒井 寛 笹沼 慎一

出版者

横浜国立大学

雑誌

Actinia : bulletin of the Manazuru Marine Laboratory for Science Education, Faculty of Education and Human Sciences, Yokohama National University

巻号頁・発行日

vol.13, pp.1-12, 2000-03-31

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Chaetopterus gregarius new species (Polychaeta: Chaetopteridae) is described from 120-300m depth off Tokyo Bay, Central Japan. The new species is gregarious and probably epifaunal; masses of irregularly U-shaped, tough, parchment-like tubes were recovered from hard substrata. The species is oculate, of moderate size (up to 57mm long), with 9A+5B+16-23C segments. It appears to differ from other members of the genus in having two kinds of notopodia in region C. When live specimens were placed in fresh water, bioluminescence was seen in the palps and alate (winglike) notopodia of B1, with the most long-lasting and brilliant light at the base of the B1 notopodia. No other areas luminesced. This pattern appears to differ from ones reported from other members of the genus, most of which have been (incorrectly) identified as C. variopedatus.

著者

西 栄二郎 荒井 寛 笹沼 慎一

出版者

横浜国立大学教育人間科学部附属理科教育実習施設

雑誌

Actinia

巻号頁・発行日

no.13, pp.1-12, 2000-03

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Chaetopterus gregarius new species (Polychaeta: Chaetopteridae) is described from 120-300m depth off Tokyo Bay, Central Japan. The new species is gregarious and probably epifaunal; masses of irregularly U-shaped, tough, parchment-like tubes were recovered from hard substrata. The species is oculate, of moderate size (up to 57mm long), with 9A+5B+16-23C segments. It appears to differ from other members of the genus in having two kinds of notopodia in region C. When live specimens were placed in fresh water, bioluminescence was seen in the palps and alate (winglike) notopodia of B1, with the most long-lasting and brilliant light at the base of the B1 notopodia. No other areas luminesced. This pattern appears to differ from ones reported from other members of the genus, most of which have been (incorrectly) identified as C. variopedatus.

著者

荒井 寛

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.38, no.3, pp.319-321, 1991-11-30 (Released:2010-06-28)

参考文献数

9

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神奈川県三浦半島よりニザダイ科魚類の一種, モアイテングハギ (新称) Naso fageniの幼魚を1個体採集した.本種はインド洋西部, オーストラリア北西部, フィリピンから知られているだけであった.本種は背鰭と臀鰭の条数が少ないことで同属他種とは容易に区別される.これまでに知られた尾又長170mm以上の個体とは異なり, 今回採集された尾叉長103mmの個体の尾鰭は, 三日月形ではなく, わずかに湾入していた.また, 生時には尾柄に白帯があった.