- 【Updated on May 12, 2025】 Integration of CiNii Dissertations and CiNii Books into CiNii Research
- Trial version of CiNii Research Knowledge Graph Search feature is available on CiNii Labs
- Suspension and deletion of data provided by Nikkei BP
- Regarding the recording of “Research Data” and “Evidence Data”
Reproductive swarming of Polyophthalmus pictus (Annelida: Opheliidae) observed at Okinawa Island and adjacent island, Ryukyu Islands, southern Japan
Bibliographic Information
- Other Title
-
- 沖縄島周辺におけるカスリオフェリアPolyophthalmus pictus (Dujardin, 1839) (環形動物門:オフェリアゴカイ科) の生殖群泳
Search this article
Description
Sexually mature swarming adults of Polyophthalmus pictus (Annelida: Opheliidae) were collected from two sites from Okinawa Island and adjacent island around night during spring high-tides at the new moon and the following two days in February 2015, using an underwater light. Chaetae in the tail become longer in swarming adults due to epitokous metamorphosis in comparison with immature benthic specimens. This is the first record of the reproductive swarming behavior and epitokous metamorphosis in Japanese opheliids.
2015年2月16日20:30–21:30 (月齢26.9–27.0), 2月20日19:15–19:30, 20:30–20:40, 21日0:15–0:30 (月齢1.4–1.6)に沖縄県瀬底島において, 2月19日19:00–20:30 (月齢0.4–0.5)に奥武島において, 夜間に設置した水中集魚灯に集まるカスリオフェリアPolyophthalmus pictus (環形動物門:オフェリアゴカイ科)の群泳個体 (合計1378個体) を採集した. それらは未成熟個体に比べて尾部の剛毛が伸長するという形態変化 (生殖変態) を伴っており, 大部分の個体は体内に卵 (楕円形, 約40 µm × 20 µm) または精子を充満させた成熟個体であった. 本報告は, 日本産オフェリアゴカイ科の生殖変態・生殖群泳の初記録である.
論文
Journal
-
- Fauna Ryukyuana
-
Fauna Ryukyuana 28 29-35, 2016-02-03
Ryukyu University Museum, Fujukan
- Tweet
Details 詳細情報について
-
- CRID
- 1390303620065219200
-
- NII Article ID
- 120006407225
-
- HANDLE
- 20.500.12000/38717
-
- ISSN
- 21876657
-
- Text Lang
- ja
-
- Article Type
- journal article
-
- Data Source
-
- JaLC
- IRDB
- CiNii Articles