Abundance of gaper clam larvae in lower Yaquina Bay Oregon from 12 January to 12 March, 1976 : report to Oregon Dept. of Fish and Wildlife Public Deposited

http://ir.library.oregonstate.edu/concern/technical_reports/qv33rx12b

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  • Ana1ysis of January to March samples of gaper clam larvae from Yaquina Bay, Oregon have established four hypotheses for further testing: 1) gaper clams have an approximately lunar cycle of spawning intensity with maximum production of larvae at the periods of greatest tidal amplitude, 2) the time required for development from 'straight-hinge' to 'umbo' stage is two to three weeks; 3) younger larvae are about evenly distributed through the lower estuary, except that they are less common over the tidal flats of the south shore; and 4) gaper clam larvae are found throughout the water column but are consistently most abundant in near surface depths.
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  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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  • description.provenance : Submitted by Susan Gilmont (susan.gilmont@orst.edu) on 2012-01-10T18:56:01Z No. of bitstreams: 1 AbundanceGaperClam.pdf: 6002340 bytes, checksum: b55f9dcab5e0629ca6eb50959c622acc (MD5)
  • description.provenance : Made available in DSpace on 2012-01-10T18:56:01Z (GMT). No. of bitstreams: 1 AbundanceGaperClam.pdf: 6002340 bytes, checksum: b55f9dcab5e0629ca6eb50959c622acc (MD5) Previous issue date: 1976

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