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Aspects Of The Life History Of The Shovelnose Sturgeon Scaphirhynchus Platorynchus Rafinesque In The Missouri River
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Book Synopsis Aspects of the Life History of the Shovelnose Sturgeon, Scaphirhynchus Platorynchus (Rafinesque) in the Missouri River by : Paul L. Zweiacker
Download or read book Aspects of the Life History of the Shovelnose Sturgeon, Scaphirhynchus Platorynchus (Rafinesque) in the Missouri River written by Paul L. Zweiacker and published by . This book was released on 1967 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Life History Characteristics of the Shovelnose Sturgeon, Scaphirhynchus Platorynchus (rafinesque) in the Chippewa-Red Cedar River System by : Wisconsin. Department of Natural Resources. Bureau of Research
Download or read book Some Life History Characteristics of the Shovelnose Sturgeon, Scaphirhynchus Platorynchus (rafinesque) in the Chippewa-Red Cedar River System written by Wisconsin. Department of Natural Resources. Bureau of Research and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To prove that basic life history information, now entirely lacking, most essential to development of management strategy for the shovelnose sturgeon, including extent of movement, fecundity, time of spawning, extent of natural reproduction, and rate of growth.
Book Synopsis Movement and Reproduction of Shovelnose Sturgeon, Scaphirhynchus Platorynchus (Rafinesque), in the Missouri River South Dakota by : Richard E. Moos
Download or read book Movement and Reproduction of Shovelnose Sturgeon, Scaphirhynchus Platorynchus (Rafinesque), in the Missouri River South Dakota written by Richard E. Moos and published by . This book was released on 1978 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Conceptual Life-History Model for Pallid and Shovelnose Sturgeon by : Mark Lee Wildhaber
Download or read book A Conceptual Life-History Model for Pallid and Shovelnose Sturgeon written by Mark Lee Wildhaber and published by Geological Survey (USGS). This book was released on 2007-01-01 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Missouri River Natural Resources Bibliography by : Vincent J. Burke
Download or read book Missouri River Natural Resources Bibliography written by Vincent J. Burke and published by . This book was released on 1997 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sturgeon biodiversity and conservation by : Vadim J. Birstein
Download or read book Sturgeon biodiversity and conservation written by Vadim J. Birstein and published by Springer Science & Business Media. This book was released on 2005-12-09 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected, reviewed and revised papers from the International Conference on Sturgeon Biodiversity and Conservation held at The American Museum of Natural History in New York on 28-30 July 1994
Book Synopsis The Food Habits of the Shovelnose Sturgeon Scaphirhynchus Platorynchus (Rafinesques), in the Missouri River by : John W. Held
Download or read book The Food Habits of the Shovelnose Sturgeon Scaphirhynchus Platorynchus (Rafinesques), in the Missouri River written by John W. Held and published by . This book was released on 1966 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Understanding how Harvest Influences the Life History and Demographics of Shovelnose Sturgeon in the Middle Mississippi River by : Sara Joy Tripp
Download or read book Understanding how Harvest Influences the Life History and Demographics of Shovelnose Sturgeon in the Middle Mississippi River written by Sara Joy Tripp and published by . This book was released on 2007 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shovelnose sturgeon Scaphirhynchus platorynchus in the Middle Mississippi River is one of the last commercially viable sturgeon populations in the world. To determine whether commercial harvest of the black-egg (sexually mature) females is impacting this population, information regarding sex-specific demographics and the reproductive life history is required. Adult shovelnose sturgeon were sampled using gill nets (5-cm bar mesh) monthly during February 2005 through July 2006 at three sites on the Middle Mississippi River between Cairo, IL and St. Louis, MO; (RKM: 201-198; 191-188, and RKM 127-124). Of all shovelnose sturgeon sampled, 363 were females and 416 were males, deviating from 1:1 (p=0.06). Sex-specific length frequency distributions differed (p=0.03) with females having a larger median fork length (614 mm). Compared to historical data, the population shifted towards longer fish, and somatic growth declined. The population also shifted towards older fish with reduced recruitment. Age at maturity was later than previously reported, with females maturing at a mean age of 10.5 years and males at 9 years of age. Total egg count was slightly lower than previously reported with a mean of 29,573/female. However, the spawning cycle had not changed with most males and females spawning every 2 and 3 years, respectively. Larval sturgeon were also sampled to link age at maturation, timing and periodicity of spawning, and larval growth rates. Larval sturgeon occurred during June and July of 2005 and May and June of 2006, confirming successful spawning. Larval sturgeon grew between 0.69 to 1.69 mm total length per day among four distinct cohorts produced each year. For the first time for this population, sturgeon were found to spawn during the fall. Fall sturgeon contained ripe eggs with polarization indexes (PIs)
Book Synopsis Food Selectivity of the Shovelnose Sturgeon by : Timothy Charles Modde
Download or read book Food Selectivity of the Shovelnose Sturgeon written by Timothy Charles Modde and published by . This book was released on 1973 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1994-06-21 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reproductive Demographics and Early Life History of the Shovelnose Sturgeon (Scaphirhynchus Platorynchus) by : Robert E. Colombo
Download or read book Reproductive Demographics and Early Life History of the Shovelnose Sturgeon (Scaphirhynchus Platorynchus) written by Robert E. Colombo and published by . This book was released on 2004 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Estimates of Shovelnose Sturgeon (Scaphirhynchus Platorynchus) in the Unchannelized Missouri River by : Jeffrey James Schuckman
Download or read book Population Estimates of Shovelnose Sturgeon (Scaphirhynchus Platorynchus) in the Unchannelized Missouri River written by Jeffrey James Schuckman and published by . This book was released on 1982 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Conceptual Life-history Model for Pallid and Shovelnose Sturgeon by :
Download or read book A Conceptual Life-history Model for Pallid and Shovelnose Sturgeon written by and published by . This book was released on 2007 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intensive management of the Missouri and Mississippi Rivers has resulted in dramatic physical changes to these rivers. These changes have been implicated as causative agents in the decline of pallid sturgeon. The pallid sturgeon, federally listed as endangered, is endemic to the turbid waters of the Missouri River and the Lower Mississippi River. The sympatric shovelnose sturgeon historically was more common and widespread than the pallid sturgeon. Habitat alteration, river regulation, pollution, and over-harvest have resulted in the now predictable patterns of decline and localized extirpation of sturgeon across species and geographic areas. Symptomatic of this generalized pattern of decline is poor reproductive success, and low or no recruitment of wild juveniles to the adult population. The purpose of this report is to introduce a conceptual life-history model of the factors that affect reproduction, growth, and survival of shovelnose and pallid sturgeons. The conceptual model provided here was developed to organize the understanding about the complex life history of Scaphirhynchus sturgeons. It was designed to be used for communication, planning, and to provide the structure for a population-forecasting model. These models are intended to be dynamic and responsive to new information and changes in river management, thereby providing scientists, stakeholders, and managers with ways to improve understanding of the effects of management actions on the ecological requirements of Scaphirhynchus sturgeons. As new scientific knowledge becomes available, it could be included in the model in many ways at various integration levels.
Book Synopsis Hatchery Manual for the White Sturgeon (Acipenser Transmontanus Richardson) by : Fred Sequin Conte
Download or read book Hatchery Manual for the White Sturgeon (Acipenser Transmontanus Richardson) written by Fred Sequin Conte and published by UCANR Publications. This book was released on 1988 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Middle Missouri River Wildlife Study by : Kerry J. Constan
Download or read book Middle Missouri River Wildlife Study written by Kerry J. Constan and published by . This book was released on 1981 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Skeletal Anatomy of the North American Shovelnose Sturgeon Scaphirhynchus Platorynchus (Rafinesque 1820) with Comparisons to Other Acipenseriformes by : Eric K. Findeis
Download or read book Skeletal Anatomy of the North American Shovelnose Sturgeon Scaphirhynchus Platorynchus (Rafinesque 1820) with Comparisons to Other Acipenseriformes written by Eric K. Findeis and published by . This book was released on 1993 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Demographics and Seasonal Diet Composition of Shovelnose Sturgeon (Scaphirhynchus Platorynchus Rafinesque) in Wabash River by : Vaskar Nepal
Download or read book Demographics and Seasonal Diet Composition of Shovelnose Sturgeon (Scaphirhynchus Platorynchus Rafinesque) in Wabash River written by Vaskar Nepal and published by . This book was released on 2014 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
