著者
石田 惣 山田 浩二 山西 良平 和田 太 渡部 哲也
出版者
大阪市立自然史博物館
雑誌
自然史研究 : Shizenshi-kenkyu, occasional papers from the Osaka Museum of Natural History (ISSN:00786683)
巻号頁・発行日
vol.3, no.15, pp.237-271, 2014-12-28

文献、標本、ならびに著者または研究者らによる調査・観察記録を渉猟することで、大阪府の汽水域・砂浜域の無脊椎動物および藻類相を調べた。その結果、記録種は総計で無脊椎動物が571 種群、藻類が57 種群となった。本報ではそれらの種と参照資料のリストを示す。
著者
岩崎 敬二 木村 妙子 木下 今日子 山口 寿之 西川 輝昭 西 栄二郎 山西 良平 林 育夫 大越 健嗣 小菅 丈治 鈴木 孝男 逸見 泰久 風呂田 利夫 向井 宏
出版者
JAPANESE ASSOCIATION OF BENTHOLOGY
雑誌
日本ベントス学会誌 = Japanese journal of benthology (ISSN:1345112X)
巻号頁・発行日
vol.59, pp.22-44, 2004-07-28
被引用文献数
24 26

To investigate the invasion history and recent geographic distribution of marine organisms introduced to Japan or transferred domestically to non-native regions, a questionnaire survey on their occurrence in the field, including both published and unpublished records, was conducted in 2002-2003. A total of 105 taxa was reported by 94 respondents. According to three criteria, viz. known or unknown geographic origin, established invasion history, and presumed dispersal mechanisms associated with human activities, 42 taxa were designated as non-indigenous species introduced to Japan through human activities, 26 taxa as indigenous species that are distributed both in Japan and other countries but are introduced from abroad to Japan for fisheries or as fish bait, 20 taxa as cryptogenic species which are not demonstrably native or introduced, two taxa as non-indigenous species that have extended their range to Japan through natural dispersion, and one taxon as an indigenous species. The remaining 14 taxa were considered to have been transferred domestically to new areas. Analysis of the years of first record of 42 non-indigenous species suggests that the rate of invasion has increased over the past century, with seven or eight species being introduced per decade after 1960. Data on temporal change in geographic distribution revealed that many non-indigenous species have become widespread recently, from the Pacific coasts of central Japan to the coasts of the Sea of Japan or northward. However, the species listed in the present study are not exhaustive, and more extensive investigations covering all taxa and all presumed dispersal mechanisms are urgently needed before consideration of legislative management of introduced marine organisms.
著者
山西 良平
出版者
The Japanese Society of Systematic Zoology
雑誌
動物分類学会誌 (ISSN:02870223)
巻号頁・発行日
vol.25, pp.11-16a, 1983-06-25 (Released:2018-03-30)

1939年にペルー沖で発見され,以後記録の無かったPisionellaが,日本海の丹後半島の砂底から得られた.吟味の結果,これは唯一の既知種であるP. hancockiと固定されたが,剛毛の配列,形態等に地理的変異と思われる微細な差異が存在する.
著者
山西良平
雑誌
南紀生物
巻号頁・発行日
vol.27, 1985
被引用文献数
1