Download or read book Preliminary Observations on the Spawning and Early Life History of Channel Catfish from the Lower Wisconsin River with Recommendations for Further Study written by Thomas Dale Pellett and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fisheries Review written by and published by . This book was released on 1995 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproductive Biology and Early Life History of Fishes in the Ohio River Drainage written by Thomas P. Simon and published by CRC Press. This book was released on 2003-12-29 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series fills immense gaps in knowledge of issues related to early life development of fishes in the Ohio basin. Volume I includes familes Acipenseridae to Esocidae, Volume II includes the Catostomidae, while Volume III addresses the developmental and morphological issues of catfish and madtoms. This volume describes the characteristics of the

Download or read book Research Report written by and published by . This book was released on 1967 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Report Department of Natural Resources written by Wisconsin. Dept. of Natural Resources and published by . This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wisconsin Public Documents written by and published by . This book was released on 1994 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Research Highlights written by and published by . This book was released on 1996 with total page 28 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 1996 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish and Wildlife Reference Service Newsletter written by and published by . This book was released on 1997 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book North American Journal of Fisheries Management written by and published by . This book was released on 1998 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reproductive Biology and Early Life History of Fishes in the Ohio River Drainage Ictaluridae written by Thomas P Simon and published by . This book was released on 2004 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Early Life History of Channel Catfish Ictalurus Punctatus in Navigation Pool 7 of the Upper Mississippi River written by Michael C. Duval and published by . This book was released on 1986 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Young-of-the-year (YOY) channel catfish (Ictalurus punctatus) were collected from Navigation Pool 7 of the upper Mississippi River near La Crosse, Wisconsin, USA. The objectives of this study were to describe distribution and abundance patterns, identify variations in growth, and determine food habits of YOY over the entire pool. Otolith aging technique was validated in the laboratory and used to evaluate growth of wild fish. YOY were captured by otter trawl at night in the navigable main channel during summer 1984 and 1985. A total of 296 YOY (15-83 mm SL) were collected in 1984 and 183 YOY (15-68 mm SL) in 1985. No significant differences in catch were detected throughout the pool. YOY appeared in the drift in mid-July, reached peak abundance in August, then declined sharply. In general, length did not differ significantly throughout the pool, although stations associated with a large backwater tributary produced significantly smaller fish early in both collecting seasons. No differences in growth between stations were detected. Smaller YOY appeared to feed in the water column on invertebrate drift, then switched to benthic invertebrates at about 50-mm SL. All reaches of the main channel appear to be of equal nursery value for channel catfish. A large backwater area in the pool may represent critical spawning habitat. Changes in feeding behavior dramatically affect catchability of YOY. Discharge is the major factor influencing adult spawning and YOY distribution patterns. Drifting YOY could be significantly impacted by hydropower development and commercial navigation. Otter trawling represents a means of evaluating channel catfish year-class strength. Current research gaps are presented.

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1983 with total page 2330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Exploring the Spawning Dynamics and Identifying Limitations to the Early life History Survival of an Important Endemic Fish Species written by Sara Elizabeth Seidel and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For many native, imperiled salmonid species, the prioritization of recovery and conservation efforts hinges upon the identification of a species most limiting life stage. The early life-history stage can be a limiting life stage for fish, and given the importance of the reproductive stage to overall persistence, there is a need to better understand the spawning ecology and early life history of many salmonids. The Logan River, in northern Utah, contains one of the largest metapopulations of imperiled Bonneville cutthroat trout (BCT) throughout the Bonneville Basin. LIttle research has evaluated the temporal and spatial distribution of BCT spawning nor quantified their early life-history survival. In the summer of 2009, I documented the spawning ecology of BCT and quantified their early life-history survival via egg-to-fry survival field experiments in four tributaries to the Logan River. I observed considerable variability in the timing, magnitude, and duration of spawning between study streams, in part as a function of a variable, multi-peaked hydrograph. I also conducted egg-to-fry survival experiments using incubation boxes and hatchery-fertilized, eyed cutthroat embryos and installed these boxes throughout my study streams. I found that survival was extremely variable within and among my study streams. For example, the variation I observed in survival appeared to be a function of fine sediment loads. Lastly, I observed that in the Logan River the timing of greatest intensity of both stream side and in-stream anthropogenic activities (e.g., livestock grazing, horseback riding) overlaps directly with the spawning and early life stages of BCT. Using my estimates of early survival, I revised a four-stage matrix population model for BCT in order to evaluate the hypothetical effects of anthropogenic impact on rearing areas. I determine that population growth rates are sensitive to perturbation at the egg-to-fry and fry to age-1 stages, and if even a small number of redds are destroyed through habitat degradation, a high degree of immigration of reproductivityly mature BCT is required to maintain the near-term persistence of this population. Future conservation efforts for BCT should be prioritized to protect areas where land-use activities are high during the sensitive spawning and early life-stage periods.

Download or read book Observations on the Life History of Channel Catfish Ictalurus Punctatus Rafinesque in Utah Lake Utah written by Robert E. Lawler and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The channel catfish, Ictalurus punctatus (Rafinesque), was first introduced into Utah Lake in the summer of 1911, and has since been stocked in the lake on numerous occasions. It has only been in the last few years that the channel catfish has become an important game fish in Utah. As the value of the channel catfish, as a game fish, increased, it has become increasingly important to the state to maintain this species for present and future generations. This study was initiated in 1958 and completed in 19 60, and was financed by the Utah State Department of Fish and Game. Data on certain phases of the channel catfish life history were investigated to provide information to aid in management of this species. The following phases were studied: age and rate of growth; age composition of the population; reproduction success; food habits; movements; and extent of the fishing pressure.

Download or read book Aquatic Insects of California written by Robert Leslie Usinger and published by Univ of California Press. This book was released on 1956-01-01 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms written by and published by DIANE Publishing. This book was released on 2002 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: