@article{oai:kumadai.repo.nii.ac.jp:00022019, author = {Shimada, Hideaki and 田中, 智文 and Tanaka, Tomofumi and 今村, 順茂 and Imamura, Yorishige and Nakata, Haruhiko and 島田, 秀昭 and 田中, 智文 and Tanaka, Tomofumi and 今村, 順茂 and 中田, 晴彦}, journal = {熊本大学教育学部紀要 自然科学}, month = {Dec}, note = {application/pdf, 論文(Article), Previously, we reported that the practice using rock shells is useful for environmental education. In the practice, the precise distinction of the sex of rock shells is very important. Thus, in the present study, to obtain the information about a suitable period for collection of rock shells inhabiting in Kumamoto harbor, we examined the maturity of their ovary. The maturity of the ovary in female rock shells was observed during periods from end of May to the beginning of September. Furthermore, since a high occurrence of imposex was newly found in a several harbor of Kumamoto coastal waters, it is likely that the contamination of organotin compounds still remains at hazardous levels in the harbor.}, pages = {27--32}, title = {熊本県沿岸域の巻貝における環境ホルモンの影響評価 (第5報) : 教材に適したイポニシの採取時期と場所(2)}, volume = {57}, year = {2008}, yomi = {タナカ, トモフミ and イマムラ, ヨリシゲ and タナカ, トモフミ} }