Effects of copper on survival and the immune response of juvenile coho salmon (Oncorhynchus kisutch) Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/4q77ft994

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Vaccination with Vibrio anguillarum by oral administration during copper exposure and intraperitoneal injection prior to copper exposure was employed to investigate the effects of copper upon survival and the immune response of juvenile coho salmon (Oncorhynchus kisutch). Following copper exposure the survivors were challenged under natural conditions to V. anguillarum, the causative agent of vibriosis in fish. Copper concentrations of 18.1 μg /liter and higher caused significant mortality among coho fry during 30 days of exposure. The exposure of copper bioassay survivors to a natural challenge against V. anguillarum in seawater caused significant mortality among those fish from concentrations of copper at 13. 9 μg /liter and higher. The reduced number of dead fish positive for V. anguillarum from the challenge suggests that sublethal copper stress and difficulty with seawater adaptation may have caused several deaths. Significant mortality occurred among coho fingerlings exposed to 24.6 μg /liter copper and higher for 31 days. Most of the survivors of these concentrations were unable to adapt to seawater and died within the first three days of challenge. Significant mortality also occurred during adaptation of survivors from 18.2 μg/liter copper where the mean mortality resulting from 31 days exposure was only 2%. The antibody level against V. anguillarum, measured by agglutinin titer, was significantly reduced in fish exposed to this concentration of copper when compared to that developed in control animals.
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
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-10-24T20:54:38Z (GMT) No. of bitstreams: 1 StevensDonaldG1977.pdf: 394754 bytes, checksum: 6ba97bf7c2e547a6ee593670279661f5 (MD5)
  • description.provenance : Submitted by Georgeann Booth (gbscannerosu@gmail.com) on 2013-10-22T00:14:57Z No. of bitstreams: 1 StevensDonaldG1977.pdf: 394754 bytes, checksum: 6ba97bf7c2e547a6ee593670279661f5 (MD5)
  • description.provenance : Made available in DSpace on 2013-11-01T18:27:15Z (GMT). No. of bitstreams: 1 StevensDonaldG1977.pdf: 394754 bytes, checksum: 6ba97bf7c2e547a6ee593670279661f5 (MD5) Previous issue date: 1976-12-09
  • description.provenance : Approved for entry into archive by Kirsten Clark(kcscannerosu@gmail.com) on 2013-11-01T18:27:14Z (GMT) No. of bitstreams: 1 StevensDonaldG1977.pdf: 394754 bytes, checksum: 6ba97bf7c2e547a6ee593670279661f5 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items