@article{oai:nagoya.repo.nii.ac.jp:02006094, author = {西川, 輝昭 and NISHIKAWA, Teruaki and 横山, 寿 and YOKOYAMA, Hisashi}, issue = {2}, journal = {南紀生物}, month = {Dec}, note = {Life history of the European ascidian,Ascidiella aspersa (MÜLLER,1776) in warm-temperate Ago Bay,Kii Peninsula, central Japan was studied by bimonthly collection of fouling organisms from pearl-oyster cages,1-3 m deep from June 2011 to June 2012.Breeding was supposed to have occurred almost throughout the year,toward June at peak,but excluding midsummer with water temperature up to 27.6 ℃. Such a high water temperature in midsummer may possibly have suppressed gonadal maturation,and also killed many (though never all) juveniles settled toward June.This may partly explain the reason why the Ago population has not yet flourished enough to damage aquaculture.}, pages = {228--232}, title = {外来種ヨーロッパザラボヤの紀伊半島英虞湾における生活史(試論)}, volume = {60}, year = {2018} }