Download or read book Investigations of Egg Predation on Beach Spawning Sockeye Salmon Oncorhynchus Nerka in Chignik Lake Alaska written by Joseph Lee Miller and published by . This book was released on 1998 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Studies of Sockeye Salmon and Related Limnological and Climatological Investigations Brooks Lane Alaska 1957 written by Theodore R. Merrell and published by . This book was released on 1964 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book History of the Fishery and Summary Statistics of the Sockeye Salmon Oncorhynchus Nerka Runs to the Chignik Lakes Alaska 1888 1966 written by Michael L. Dahlberg and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Bristol Bay Almanac for 1999 written by Donald E. Rogers and published by . This book was released on 1999 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sockeye Salmon Oncorhynchus Nerka written by Russell Earle Foerster and published by . This book was released on 1968 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predation on Sockeye Salmon Fry by Piscivorous Fishes in the Lower Cedar River and Southern Lake Washington written by Roger Tabor and published by . This book was released on 1996 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fisheries Forum written by University of Washington. School of Fisheries and published by . This book was released on 1992 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predation of Sockeye Salmon Fry by Cottids and Other Predatory Fishes in the Cedar River and Southern Lake Washington 1997 written by Roger Tabor and published by . This book was released on 1998 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of Juvenile Sockeye Salmon Resident in Chignik River Alaska written by Ronald Albert Iverson and published by . This book was released on 1966 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The life history of juvenile sockeye salmon (Oncorhynchus nerka) resident in Chignik River, Alaska, represents a departure from the lacustrine, pelagic existence typical of juveniles of this species. For this reason, the distribution, relative abundance in different parts of the river, growth, and upstream and downstream movements of juvenile sockeye in the river were studied during the summers of 1963 and 1964. The objectives of the study were to gain information on the possible origins of juvenile sockeye resident in Chignik River, and on the role of Chignik River in production of sockeye salmon. Distribution and abundance were estimated by seining and underwater observation. Juvenile sockeye appeared to be restricted to quiet waters along the shore. Catches of sockeye fry tended to increase through the summer, whereas catches of yearlings decreased. Smolts were taken in significant numbers only in June and July. early summer, large numbers of yearling sockeye were concentrated in Chignik River just below the outlet of Chignik Lake. In sockeye fry and yearlings captured in the lower river were generally larger than those captured in the upper river. Juvenile sockeye in the upper river grew slower than those in most other parts of the watershed. Scale analysis of sockeye salmon spawning in Chignik River showed that these fish entered the ocean at a larger size than did fish reared in Chignik Lake or Chignik River. This suggests that at least part of the progeny of river spawners do not remain in the river, but descend as fry to the brackish estuary, where growth conditions are superior. Upstream movement of schools of yearling sockeye was observed in the upper portions of the river. Such a movement has been observed many times in Chignik River in past years and has at times involved large numbers of fish. Schools of yearling sockeye have been observed to enter Chignik Lake. Fish of the same size group were captured while moving downstream at the lake outlet at night, suggesting a circular movement involving displacement of fish into the river at night and a positive rheotactic response causing them to re-enter the lake during the day. Juvenile sockeye salmon resident in Chignik River may include both progeny of river spawners, and fish which have moved down from Chignik Lake; Chignik Lake is probably the more important source. Chignik River is judged to have a minor role in the production of sockeye salmon, relative to the other rearing areas in the watershed.
Download or read book The Effects of Spawning Sockeye Salmon Oncorhynchus Nerka on Small Streams in the Wood River Lakes Alaska written by Douglas Paul Peterson and published by . This book was released on 1998 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Juvenile Sockeye Salmon Oncorhynchus Nerka Energy Densities and Their Habitat Quality in the Chignik Watershed Alaska written by Heather Finkle and published by . This book was released on 2004 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Chignik watershed, on the southern side of the Alaska Peninsula, supports a large salmon fishery vital to the local economy. Recent morphological changes to the watershed generated concern regarding the sockeye salmon (Oncorhynchus nerka) stock that rears in Black Lake, at the head of the system. Studies of the Chignik watershed to date have not incorporated energy density data to explain the life history strategies of Chignik sockeye salmon. Re-estimated condition factor parameters improved our understanding of the length-weight relationships to fish health that isometric models described in Chignik sockeye salmon. Subsequent comparisons of age, length, weight, location, and temperature data to energy density indicated that Black Lake fish, which were all age 0 fish, were significantly affected by temperature and had energy densities greater than did fish from other areas of the watershed. Sockeye salmon captured in Chignik Lake, Chignik River, and Chignik Lagoon were only energetically different from one another based on age. Observed seasonal trends suggested juvenile sockeye salmon emigrate from Black Lake before the onset of winter due to forage and temperature limitations. A constant downstream migration occurred in the watershed during the summer, which suggested smoltification and osmoregulation processes in Chignik Lagoon fish"--Leaf iii.
Download or read book Sockeye Salmon Smolt Investigations on the Chignik River 2005 written by Heather Finkle and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper provides the results from the twelfth year of the Chignik River sockeye salmon Oncorhynchus nerka smolt enumeration project.
Download or read book Sockeye Salmon Smolt Investigations on the Chignik River 2010 written by Mary E. Loewen and published by . This book was released on 2011 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of the sockeye salmon Oncorhynchus nerka smolt monitoring and enumeration project conducted by the Alaska Department of Fish and Game in the Chignik River watershed in 2010.
Download or read book Studies of Adult Sockeye Salmon Oncorhynchus Nerka at Chignik Alaska in 1969 and 1970 written by John West Wells and published by . This book was released on 1971 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior and Distribution of Spawning Sockeye Salmon on Island Beaches in Lliamna Lake Alaska 1965 written by Orra Edwin Kerns and published by . This book was released on 1968 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Freshwater Fish Communities to Spawning Sockeye Salmon Oncorhynchus Nerka written by Daniel E. Eastman and published by . This book was released on 1996 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The migration patterns, food habits and the overall body condition of resident fish populations were characterized with particular reference to spawning activity of sockeye salmon (Oncorhynchus nerka) in the Wood River lake system, AK. Juvenile and adult char (Salvelinus sp.) and rainbow trout (Oncorhynchus mykiss) moved into three of the four small study streams as salmon began to spawn, consumed large quantities of salmon eggs and other salmon-derived food items, and in most cases grew significantly (in weight) throughout the summer. Tag-recapture results indicated that rainbow trout, char and Arctic grayling (Thymallus arcticus) were moving substantially within the streams and that trout and grayling were migrating between streams (2.7-3.9 km) within the lake. Prior to salmon spawning, stomachs contained only small aquatic and terrestrial insects and, most fish were visibly emaciated. In Pick Creek salmon-derived food items dominated (>90% by weight) the diets of most fish for more than a month, with some individuals' stomachs containing more than 1,000 salmon eggs. During this time period, most species in the four streams were significantly heavier due to a combination of increased food consumption and growth. There were also costs associated with feeding in these small streams, as was evidenced by the high frequency of wounds inflicted upon resident fish by aggressive, spawning salmon. Grayling preyed primarily upon aquatic insects and did not exhibit significant growth throughout the salmon spawning season. Salmon-derived resources promote summer growth in those species which capitalize on their seasonal availability and may enhance survival in Arctic regions where the summer growth period is short and winter is severe"--Author's abstract.
Download or read book Influences of Spawning Habitat and Geography written by Molly T. McGlauflin and published by . This book was released on 2010 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
