|
|
Article: Spatio-temporal variations in density of different life stages of a brackish water clam Corbicula japonica in the Kiso estuaries, central Japan.
- Article from:
- Journal of Shellfish Research
- Article date:
- December 1, 2005
- Author:
CopyrightCOPYRIGHT 2005 National Shellfisheries Association, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
ABSTRACT: By frequent sampling from May 2001 to October 2002, we examined spatio-temporal variations in densities of different life stages (planktonic larvae, new settlers and small, large and commercial individuals) of Corbicula japonica in the Kiso estuaries (the Ibi-Nagara Estuary and the Kiso Estuary). Planktonic larvae were found for a much longer period (mainly in June to December 2001 and in April to October 2002) than reported in previous studies. Densities of planktonic larvae were significantly higher in the Kiso Estuary than in the Ibi-Nagara Estuary, whereas the reverse was true for new settlers and commercial individuals, indicating that larval settlement ...