@article{oai:oacis.repo.nii.ac.jp:00002015,
 author = {鳥羽, 光晴 and 小林, 豊 and 日向野, 純也 and 石井, 亮 and 林, 俊裕 and 岡本, 隆},
 issue = {3},
 journal = {水産技術, Journal of Fisheries Technology},
 month = {May},
 note = {To develop a technique for natural spat collection of asari clam in a soft-bottomed tidal area under strong hydrodynamic conditions, we conducted experiments using mesh bags containing pelletized oyster shell powder and artificial turf as a spat collector in Banzu tidal flat in Tokyo Bay from 2012 to 2014. Densities of the collected spats increased in spring and summer, with peak values of 50.5 ± 14.5 (mean ± SE) (32.5 ± 9.3 times as high as the ambient density of natural clams) and 166.2 ± 12.3 (44.6 ± 3.3 times higher than the ambient density) individuals per 100 cm, respectively. Spat densities collected by both methods steadily increased at the onshore site. The densities were lower and fluctuated at the offshore site, despite its higher density of ambient natural clams, probably due to sediment frequently covering the collectors due to strong waves. The highest density of spats was obtained in the mesh bags laid simply on the bottom without manipulation, such as partial suspension and installation of a float inside the bag. The turf loosely held by iron stakes to allow free vertical movement collected higher densities of spats than that fixed tightly to the bottom., 高波浪域である東京湾盤洲干潟でアサリの養殖用種苗を確保するため，網袋と人工芝による天然稚貝の捕集実験を行った。季節による差異の比較では，網袋と人工芝はともに春夏季にそれぞれ最高密度51個体/100cm2(周辺の天然稚貝の密度の33倍），166個体/100cm2(45倍)の高い捕集効果を示した。岸沖2地点の比較では，波浪によるかく乱の強い沖地点では，網袋と人工芝は埋没して捕集効果は低かったが，埋没のない岸地点では良好な捕集効果を示した。網袋の埋没を避けるために試みた吊り下げる設置方法と浮子を入れた設置方法ではともに従来法より捕集効果は低かった。人工芝は海底面の変動に追随する遊動式の効果が高かった。},
 pages = {101--112},
 title = {東京湾盤洲干潟での網袋と人工芝のアサリ天然稚貝の捕集効果},
 volume = {9},
 year = {2017}
}