Download or read book Use of Otoliths to Differentiate Juvenile Steelhead Trout from Juvenile Rainbow Trout in the Lower Deschutes River Oregon written by James Todd Rybock and published by . This book was released on 1973 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reported are results of a study of otolith nuclei as a means to separate juvenile steelhead trout (Salmo gairdneri) from juvenile rainbow trout (S. gairdneri) which co-exist in the lower Deschutes River, Oregon. An intensive recreational fishery necessitated development of a technique for separation so that the impact of the fishery on each race could be assessed independently. Results revealed that steelhead trout mature at a larger size than rainbow trout, egg size in both races is directly related to body size of dam, and size of otolith nucleus is positively correlated with egg size in rainbow trout. Examination of adults demonstrated, in fact, that otolith nuclei of steelhead are significantly larger than those of rainbow. Size of otolith nucleus does not change with growth of either fish, nor are there differences due to sex or origin. The validity and utility of this method to separate the races were confirmed. Regressions of length and weight of otolith on length of fish demonstrated that otoliths of juvenile steelhead grow at the same rate as those of rainbow, whereas adult steelhead on their spawning migration are longer than rainbow for a given length or weight of otolith. A list of methods used by others to facilitate the viewing of otoliths and a discussion of the formation of the otolith nucleus are included.

Download or read book Fishery Bulletin written by and published by . This book was released on 1988 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1975 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book O S U Theses and Dissertations 1970 1977 written by Oregon State University and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1976 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2000 with total page 1738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Racial Identification of Juvenile Summer and Winter Steelhead and Resident Rainbow Trout Salmo Gairdneri Richardson written by Brian D. Winter and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1982 with total page 2134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Native Trout Project written by and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Differentiation of Resident and Anadromous Rainbow Trout Salmo Gairdneri in the Deschutes River Basin Oregon written by Kenneth P. Currens and published by . This book was released on 1987 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature Genetic and Ration Effects on Juvenile Rainbow Trout Oncorhynchus Mykiss Bioenergetics written by Christopher Alexander Myrick and published by . This book was released on 1998 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feeding Aggression and Growth in Juvenile Steelhead Trout Salmo Gairdneri microform written by Abbott, Jeremy C and published by National Library of Canada. This book was released on 1985 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Racial Analysis of Juvenile Summer and Winter Steelhead and Resident Rainbow Trout Salmo Gairdneri Richardson from Three Northern California Watersheds written by Brian D. Winter and published by . This book was released on 1983 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Further Serological Studies Relating to the Differentiation of Rainbow Trout from Steelhead Trout written by Clarence Chrisp and published by . This book was released on 1960 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Passing Juvenile Steelhead Rainbow Trout and a Hatchery Strain of Rainbow Trout Through a Volute Pump written by California. Anadromous Fisheries Branch and published by . This book was released on 1972 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Downstream Migration of Juvenile Rainbow steelhead Trout in the Nisqually River and Muck Creek 1980 1981 written by Joseph M. Hiss and published by . This book was released on 1982 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oregon Rainbow and Cutthroat Trout Evaluation written by Oregon. Department of Fish and Wildlife. Research and Development Section and published by . This book was released on 1978 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: