Download or read book Fecundity of Flathead Catfish and Blue Catfish from the Mississippi River Between Hannibal and Cape Girardeau Missouri written by Jacob D. Colehour and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 48 female flathead catfish (Pylodictis olivaris) and 35 blue catfish (Ictalurus furcatus) were collected and sacrificed from the Mississippi River during June 2007. Fish were sexed, measured, weighed, and the following tissues were sampled: blood, pectoral spines, otoliths, and ovaries. Ovaries were weighed and two sub-samples of each ovary were collected, weighed, and counted. Total number of eggs was compared in a linear regression to length, weight, age, hormone level, and GSI (gonadosomatic index). Simple linear regression analysis indicated that the best predictor of egg numbers was length and weight of flathead catfish and blue catfish. Blues: Eggs = 173.6 * length (mm) - 82375 (p = 1.5E -14 and R2 = 0.86) and Eggs = 5899.1 * weight (kg) + 9841.5 (p = 2.08E -18 and R2 = 0.92). Flatheads: Eggs = 79.3 * length (mm) - 34325 (p = 7.83E -21 and R2 = 0.85) and Eggs = 2419 * weight (kg) +5437.3 (p = 5.8E -22 and R2 = 0.87). Linear regressions will assist natural resource managers with calculating recruitment and fecundity of flathead catfish.
Download or read book Growth of Blue Channel and Flathead Catfish in Selected Habitats of the Lower Mississippi River written by Danny C. Lee and published by . This book was released on 1983 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Blue Catfish Channel Catfish and Flathead Catfish Relative to Latitude and Physical Characteristics of the Lower Mississippi River written by Robert Murrah Mayo and published by . This book was released on 1999 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial and Temporal Variability of Channel Catfish Populations in the Upper Mississippi River System written by Todd Marvin Koel and published by . This book was released on 1998 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: One application of Long Term Resource Monitoring Program (LTRMP) data is to evaluate long term trends in channel catfish (Ictalurus punctatus Rafinesque 1818) populations. This species is an important component of the Upper Mississippi River System (UMRS) fish community because it is numerally abundant, it comprises a significant portion of the total fish biomass, and it is avidly sought by both sport anglers and commercial harvesters. Since 1989, biologists at the LTRMP Field Stations have monitored fish population and community structure at six pools and in multiple aquatic habitat types of the UMRS. These pools include the tailwater, impounded, side channel, main channel, and backwater habitats defined by navigation lock and dam 4, 8, 13, and 26 of the Mississippi River; the.
Download or read book Movement Habitat Use and Spawning Characteristics of Flathead and Blue Catfish on the Lower Missouri River and Tributaries written by Daniel L. Garrett and published by . This book was released on 2010 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: The movement and habitat use patterns of adult flathead and blue catfish were studied via acoustic and radio telemetry in the lower Missouri River and adjacent tributaries including the Grand, Lamine, Chariton, and Little Chariton Rivers. At the largest spatiotemporal scale, annual movement patterns varied greatly from restricted-movement behavior throughout the annual cycle to seasonal migrations commonly tens of kilometers between habitats used for spawning, feeding and growth, and overwintering. Fish moved the least during the overwintering period and the most during the prespawn/spawn period, followed by a third period of restricted movement during the summer and early fall. The diversity in life history strategies suggests that populations of large-river catfish use resources at multiple spatial scales, from the reach to the watershed, to meet life requisites. Diurnal home range and resource selection was investigated during the summer/fall restricted-movement period; an ecologically relevant time frame with respect to feeding and growth. With the exception of few, both species established small home ranges (
Download or read book Variations in the Abundance of Channel Catfish Year Classes in the Upper Mississippi River and Causative Factors written by Don Helms and published by . This book was released on 1975 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Qualitative System to Evaluate Populations of Channel Catfish and Flathead Catfish in the Missouri and Mississippi Rivers Final Report written by John Wesley Robinson and published by . This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling Procedures to Capture Flathead Catfish and Channel Catfish in the Missouri and Mississippi Rivers written by John W. Robinson and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Commercial Fishing Through the Ice on a Winter Congregation of Channel Catfish Ictalurus Punctatus and Flathead Catfish Phlodictis Olivaris in Pool 7 of the Mississippi River written by Tim Larson and published by . This book was released on 1977 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recruitment Sources of Blue Catfish Ictalurus Furcatus and Channel Catfish I Punctatus Inhabiting the Middle Mississippi River written by Troy W. Laughlin and published by . This book was released on 2015 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Missouri Landscapes written by Jon L. Hawker and published by . This book was released on 1992 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this magnificent book, Oliver Schuchard provides more than sixty-five exquisite black-and-white photographs spanning his thirty-eight years of photography. In addition, he explains the aesthetic rationale and techniques he used in order to produce these photographs, emphasizing the profound differences between, yet necessary interdependence of, craft and content. Although Schuchard believes that craft is important, he maintains that the idea behind the photograph and the emotional content of the image are equally vital and are, in fact, functions of one another. The author also shares components of his life experience that he believes helped shape his development as an artist and a teacher. He chose the splendid photographs included in this book from among nearly 5,000 negatives that had been exposed all over the world, from Missouri to Maine, California, Alaska, Colorado, France, Newfoundland, and Hawaii, among many other locations. Approximately 250 negatives survived the initial review, and each of those was printed before a final decision was made on which photographs were to be featured in the book. The final choices are representative of Schuchard's work and serve to substantiate his belief that craft, concept, and self must be fully understood and carefully melded for a good photograph to occur. This amazing work by award-winning photographer Oliver Schuchard will be treasured by professional and amateur photographers alike, as well as by anyone who simply enjoys superb photography."--Publishers website.
Download or read book Trophic Relations of Introduced Flathead Catfish in a North Carolina Piedmont River written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The flathead catfish Pylodictis olivaris is a large piscivious ictalurid that is native to the Mississippi and Rio Grande river drainages, but has been widely introduced across the United States. I studied the trophic relations of introduced flathead catfish in the upper Cape Fear River basin, located in the piedmont region of North Carolina. My specific objectives for this study were to (1) quantify the diet of the flathead catfish and determine an ontogentic shift in diet; (2) determine selectivity for different prey fishes based on their occurrence in the flathead catfish diet and abundance in the river system; (3) determine diel chronology in feeding; (4) calculate daily ration and gastric evacuation rate to quantify the rate of food consumption; and (5) conduct field experiments to elucidate the mechanisms of the predator-prey relationship by determining preferences in introduced flathead catfish and channel catfish feeding between prey species, prey location in the water column, and accessibility to cover. River ecologists and fisheries managers are concerned with introductions of flathead catfish because of negative impacts to native fish communities associated with direct predation and indirect competition from these apex predators. There are also concerns with introductions that result in co-occurrence with imperiled species, and within my study site, introduced flathead catfish occur with the federally endangered Cape Fear shiner Notropis mekistocholas and the Carolina redhorse Moxostoma sp., a federal species of concern. I sampled a section of the Deep River in North Carolina that was hydrologically divided into unimpounded and impounded reach, to quantify diet and determine diet selectivity. A second study site, located at the confluence of the Deep and Haw rivers where the Cape Fear River is formed, was sampled in conjunction with the first field site to determine diel feeding chronology, daily ration, and gastric evacuation rate. Flathead catfish were.
Download or read book Behavior and Habitat Use of Introduced Flathead Catfish in a North Carolina Piedmont River written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The flathead catfish Pylodictis olivaris is a large piscivorous carnivore that has been widely introduced beyond its native range. I studied the behavior of a flathead catfish population that has recently inhabited a section of the Deep River, North Carolina (in the upper Cape Fear River basin), and currently coexists with the federally endangered Cape Fear shiner Notropis mekistocholas. This coexistence raises concerns of predation risks of the flathead catfish on the Cape Fear shiner. I radio-tagged 24 adult flathead catfish in the Deep River between Carbonton and Highfalls dams and monitored their behavior from June 2004 to August 2005. Fish were tracked weekly to determine seasonal patterns, and subsets of those were tracked once per hour for a 24-hour period to determine diel patterns. Eight of the fish were captured, tagged, and released in the upstream, shallow section of the river, and 16 in the deep, downstream, impounded section. A majority of the tagged fish either quickly moved into or stayed in the downstream, impounded section for the entire study period. Flathead catfish selected microhabitats non-randomly annually and within three functional seasons (spawning, growth, and winter). Flathead catfish were usually associated with habitats that were relatively deep (3-6 m), slow in velocity, over bedrock substrates, and nearly always in or adjacent to coarse woody debris or associated with no cover. Among seasons, these fish utilized different habitats, with faster bottom velocities during the spawning season, silt/clay substrates and faster mean column velocities in the growth season, and in the winter season, they occupied the deepest water available and most frequently, not associated with any cover type. I calculated estimates of seasonal home range as linear home range and kernel density estimates (99%, 95%, 90% and 50%). Flathead catfish mean linear home ranges were greater than 16 km annually, and mean seasonal ranges were 13.1 km during spawning.
Download or read book Observation of a Wintertime Concentration of Catfish in the Mississippi River written by Bruce Hawkinson and published by . This book was released on 1979 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catfish and the Delta written by Richard Schweid and published by . This book was released on 1992 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Ecology of Introduced Flathead Catfish written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive aquatic species are becoming increasingly problematic for aquatic ecologists and resource managers, as the ecological and economic impacts of introductions become better known. The flathead catfish Pylodictis olivaris is a large piscivorous fish native to most of the interior basin of the United States. Via legal and illegal introductions, they have been introduced into at least 13 U.S. states and one Canadian province primarily along the Atlantic slope. I used a variety of capture-recapture models to estimate flathead catfish population parameters in three North Carolina coastal plain rivers (Contentnea Creek, Northeast Cape Fear River, and Lumber River). My estimates using a Jolly-Seber model were hindered by low capture probabilities and high temporary emigration. Reasonable estimates were possible using a robust-design framework to estimate population size and temporary emigration with supplemental information from a radio-telemetry study to examine model assumptions. Population size estimates using a robust design model including temporary emigration ranged from 4 to 31 fish/km (>125-mm total length, TL) of sampling reach. Additional analyses showed high rates of temporary emigration (>90%), independently supported by radio-telemetry results. I also examined flathead catfish diet in these rivers and found that flathead catfish fed on a wide variety of freshwater fish and invertebrates, anadromous fish, and occasionally estuarine fish and invertebrates. Fish or crayfish comprised more than 50% of the stomach contents by percent occurrence, percent-by-number, and percent-by-weight in all rivers and years. A significant difference in the diet composition percent-by-number was found between Contentnea Creek and the Northeast Cape Fear River. Significant differences were not detected between years within Contentnea Creek but were found within the Northeast Cape Fear River. Feeding intensity (as measured by stomach fullness) was highest in the Northeast Cape.
Download or read book The Life of Isaac Ingalls Stevens written by Hazard Stevens and published by . This book was released on 1901 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isaac Ingalls Stevens (March 25, 1818 - September 1, 1862) was the first governor of Washington Territory, a United States Congressman, and a major general in the Union Army during the American Civil War until his death at the Battle of Chantilly.
