Biology of the Rex sole, Glyptocephalus zachirus Lockington, in waters off Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/z316q519g

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Data are presented on the life history and population dynamics of rex sole (Glyptocephalus zachirus Lockington) collected from Oregon waters between September 1969 and October 1973. Length-weight relationships vary little between sexes or with time of year. Otolith annuli form primarily from January through May and were used for age determination. Age and length are highly correlated (r = 0.9945 for males and 0.9864 for females), with females growing faster and living longer than males. Estimates of total instantaneous mortality rate (Z) appear less variable when calculated by the catch-curve method (mean Z of 0.64 for males and 0.51 for females), than by the Jackson method. Age at 50% maturity occurs at 16 cm (about 3 years) for males and at 24 cm (about 5 years) for females. Spawning off northern Oregon occurs from January through June, with a peak in March-April. Fecundity is correlated (r = 0.9620) with length of fish. There were 15 recaptures (0.59%) from 2,537 fish tagged off northern Oregon during March and June 1970. Maximum movement of recaptured fish was only 53.9 km, but the low recovery precludes definite conclusions. Twenty loci were detected by starch-gel electrophoretic analysis using rex sole muscle tissue. Of these, three loci were polymorphic, but showed no discernible variation between collections from northern, central, and southern Oregon in April 1973.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Tamera Ontko (toscannerosu@gmail.com) on 2011-07-01T16:38:51Z No. of bitstreams: 1 HosieMichaelJoe1975.pdf: 673221 bytes, checksum: d8921947dbf8eda17e47ca15020d4e29 (MD5)
  • description.provenance : Made available in DSpace on 2011-08-04T21:02:28Z (GMT). No. of bitstreams: 1 HosieMichaelJoe1975.pdf: 673221 bytes, checksum: d8921947dbf8eda17e47ca15020d4e29 (MD5) Previous issue date: 1975-05-08
  • description.provenance : Approved for entry into archive by Anna Opoien(anna.opoien@oregonstate.edu) on 2011-08-04T20:00:50Z (GMT) No. of bitstreams: 1 HosieMichaelJoe1975.pdf: 673221 bytes, checksum: d8921947dbf8eda17e47ca15020d4e29 (MD5)
  • description.provenance : Approved for entry into archive by Anna Opoien(anna.opoien@oregonstate.edu) on 2011-08-04T21:02:27Z (GMT) No. of bitstreams: 1 HosieMichaelJoe1975.pdf: 673221 bytes, checksum: d8921947dbf8eda17e47ca15020d4e29 (MD5)

Relationships

In Administrative Set:
Last modified: 08/19/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items