Graduate Thesis Or Dissertation
 

Variations in salinity tolerance in the Pacific Treefrog, Hyla regilla, in Oregon

Público Deposited

Contenido Descargable

Descargar PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/d504rp385

Descriptions

Attribute NameValues
Creator
Abstract
  • Eggs, larvae and adults of the four subspecies of Hy la regilla occurring in Oregon as given by Jameson, Mackey and Richmond (1966) were collected and subjected to salt stress in a series of graded seawaters. It was found that in all cases adults were more tolerant than larvae and larvae were more tolerant than eggs. It was also found that animals in all stages taken from the area extending westward from the crest of the Oregon Coast Range to the sea, designated as the range of Hy la regilla pacifica, were more tolerant of elevated salt levels in their ambient medium than animals from the three other subspecies areas in Oregon. Observations were made of the effect of elevated salinities on the eggs and the development of the embryos with respect to the vitelline membranes, the closure of the blastopore and neurulation. Mechanisms were postulated to explain the observed differences in tolerance to salt stress.
Resource Type
Fecha Disponible
Fecha de Emisión
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Declaración de derechos
Publisher
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

Relaciones

Parents:

This work has no parents.

En Collection:

Elementos

Miniatura Título Fecha de subida Visibilidad Acciones
file details RobertsJamesOliver1970.pdf 2017-08-16 Público Descargar