The life cycle of Callianassa californiensis Dana, 1854, was
studied in the tidal estuary, Yaquina Bay, Oregon. At this latitude
it is largely restricted to intertidal sandy mudflats under predominately
marine influence. Salinity and temperature appear to determine
its distribution to a greater extent than does sediment type.
Vertical movement within the sediment is related to the tides on a
day to day basis and to temperature on a seasonal basis. Large-scale
breeding generally begins in the spring, and ovigerous females
may be plentiful in the cooler layers of mud until August. It is not
clear what triggers larval release, but temperature and tidal conditions
seem to be important. All five zoeal stages are found in the
plankton from the mouth of the bay to three miles offshore during
late spring and summer. Nearshore waters appear to act as a
larval reservoir along this part of the coast, and successful larval
settlement may depend upon high-tide transport into a bay. / Graduation date: 1972
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28270 |
| Date | 29 July 1971 |
| Creators | McCrow, Lynne Tucker |
| Contributors | McCauley, James E. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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