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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第64巻 第2号 >


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Title: 北海道函館湾におけるアサリの成長
Other Titles: Growth of Short-necked Clam Ruditapes philippinarum in Hakodate Bay, Hokkaido
Authors: 田村, 亮輔1 Browse this author
中川, 宙飛2 Browse this author
五嶋, 聖治3 Browse this author →KAKEN DB
Authors(alt): Tamura, Ryosuke1
Nakagawa, Chuhi2
Goshima, Seiji3
Keywords: Short-necked clam
Hakodate Bay
Shell growth
Growth ring
Growth equation
Chlorophyll a
Age determination
Issue Date: 31-Jul-2014
Journal Title: 北海道大学水産科学研究彙報
Volume: 64
Issue: 2
Start Page: 37
End Page: 44
Abstract: Shell growth of the short-necked clam Ruditapes philippinarum at Hakodate Bay, Hokkaido, Japan, was studied from February 2011 to February 2012. Monthly measurements of shell growth increment from the last ring on the shells revealed that a ring was formed annually from February to March. The Gompertz growth equation was fitted to the relationship between number of rings and shell length, and the equation, LR = 38.41exp (-exp (-0.892 (R-2.029))) was obtained, where LR is the shell length (mm) at the number of ring R. This equation shows highly depressed growth rate after 30 mm in shell length, and maximum shell length was attained about 40 mm that is smaller than those of the other localities. The estimated growth pattern was in accordance with the results of analyses of the size frequency distributions. The observed depressed growth was not explained by a shortage of food supply or seawater temperatures, but may be due to sediment character of including many cobbles and pebbles with sand which disturbs shell growth of the short-necked clam.
Type: bulletin (article)
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第64巻 第2号

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