6 0 0 0 OA 近年国内から発見された希少甲殻類(端脚目,等脚目,十脚目)についての話題
4 0 0 0 OA Lobatolampea tetragona (クシクラゲ類)は南日本に広く分布する
- 著者
- 久保田 信 山田 守彦 築地新 光子 峯水 亮 多留 聖典 奥田 和美
- 出版者
- 黒潮生物研究財団
- 雑誌
- Kuroshio Biosphere (ISSN:13492705)
- 巻号頁・発行日
- vol.9, pp.35-39, 2013-03
Lobatolampea tetragona Horita, 2000 (Ctenophora) was found recently in various localities in Japan after previous record made in 2008, extending both northwards (Odaiba, Tokyo Bay) and southwards (Ishigaki Island, Okinawa Prefecture). All these observation records of this species, particularly of the largest individual in each locality, up to ca 50 mm in width, is summarized. Geographic distribution is mapped for this endemic species
- 著者
- 金谷 弦 多留 聖典 柚原 剛 海上 智央 三浦 収 中井 静子 伊藤 萌 鈴木 孝男
- 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.73, no.2, pp.84-101, 2019-03-31 (Released:2019-05-22)
- 参考文献数
- 45
- 被引用文献数
- 3 2
To assess macrozoobenthic diversity and habitat conditions following the 2011 tsunamis, we conducted a series of field surveys in the Samegawa and Momiya River estuaries (Fukushima and Ibaraki Prefectures, respectively). We compared measured parameters with existing published datasets for 10 sites along the northeastern Honshu coast. Faunal diversity was higher at the Samegawa site (140 taxa in total, of which 31 were endangered and 51 were endemic; the faunal list included stenohaline marine taxa), likely because of the high habitat diversity at this location and seawater discharge from the thermal power plant. Cluster analysis differentiated distinct faunal community groupings associated with two habitat types: (i) marine-dominated sites, including the Samegawa Lagoon, Mangoku-ura, and Matsushima Bay and (ii) sites with riverine influence, including the mouths of the Samegawa and Momiya Rivers and brackish lagoons along Sendai Bay. The population size of the dominant mud snail Batillaria attramentaria in the Samegawa Lagoon declined steeply after the tsunamis but gradually recovered within five years. Microsatellite DNA analysis showed that the genetic diversity of this population did not significantly change following the tsunamis. After 2016, ongoing restoration work caused drastic habitat degradation at the Samegawa site, resulting in mass mortalities of polyhaline and stenohaline marine taxa and overall reductions in faunal diversity.