Download or read book Assessment of Range Habitat Use and Diel Movement of Flathead Catfish Pylodictis Olivaris in the Wabash River Using Ultrasonic Telemetry written by Sarah Mary Huck and published by . This book was released on 2014 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movement and Habitat Use of Flathead Catfish Pylodictis Olivaris in Two Missouri Interior Streams written by Jason C. Vokoun and published by . This book was released on 2003 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The movements and habitat use patterns of adult flathead catfish were studied in two Missouri interior streams via radiotelemetry. At the largest spatiotemporal scale investigated, annual movements patterns included seasonal migrations commonly tens of kilometers long between overwintering, prespawn and spawning habitats, and postspawn feeding and growth habitats. Spatial variation in annual cycles within and between the Grand River and the Cuivre River were observed. Seasonally, fish moved the least during an overwintering period, moved the most during the prespawn/spawning period of spring and early summer, which was followed by a third period of restricted movements during late summer and fall. Habitat use during the overwintering period was investigated in the Grand River and the adjoining reach of the Missouri River using a river habitat mapping system operated by the U.S. Geological Survey. During the postspawn restricted movement period, the home range of fish in both rivers were determined using univariate kernel density estimation. Home-range sizes were variable (median = 1085 m; range = 70-69090 m), and no differences between fish size classes, sexes, or rivers were evident. Habitat use was considered in an information-theoretic framework in which an exploratory all-subsets logistic regression analysis ranked the relative importance of 13 measured habitat components. Components of cover (especially large woody debris) and depth were found relatively more important than measures of velocity and substrate. Habitat use regression models from each river were evaluated and predicted well when applied to out-of-sample data from the other river. Diel activity patterns and 24-hour movement paths were presented. An appendix provides methodological information on univariate kernel density estimation in rivers and streams.

Download or read book Behavior and Habitat Use of Introduced Flathead Catfish in a North Carolina Piedmont River written by Edward George Malindzak and published by . This book was released on 2006 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: movement, kernel density estimate, microhabitat use, radio telemetry, Pylodictis olivaris, flathead catfish.

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 Movement and Consumptive Demand of the Introduced Flathead Catfish Pylodictis Olivaris in the Upper Gila River Basin New Mexcio and Potential Impacts on Native Fishes written by Skyler C. Hedden and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Negative interactions with nonnative fish are often cited as a leading cause of declining native fish populations, but quantifying these interactions is difficult. Movement ecology and consumptive demand estimates of nonnative fish predators is needed to better understand potential impacts these organisms are having on native species. The objective of this thesis were to estimate the consumptive demand of Flathead Catfish Pylodictis olivaris on native fishes across an elevational gradient, and characterize the movement at hourly, daily, and seasonal scales of this introduced predator. This research was conducted in the upper Gila River basin of southwestern New Mexico. Bioenergetics modeling was used to estimate consumptive demand; model results were coupled with measured densities and size structure of Flathead Catfish populations, and water temperatures, to predict its predatory threat. Potential consumption was highest at lower elevation sites because of higher water temperatures, but actual consumption was highest at mid-elevation sites because of the prevalence of large-bodied individuals. Potential annual consumptive demand of Flathead Catfish on native fish across our nine sampling sites ranged from 0.0 to 3.1 g/m2/yr, which exceeded native fish productivity at one site. To characterize the movement of Flathead Catfish, we used radio telemetry and tracked individuals from May 2014 to June 2015. Movement behaviors varied among individuals with a majority moving 150 m from capture location and some more mobile, moving substantial distances (692-42,840 m). During the course of the study, activity was greatest in summer and fall, and individuals moving substantial distances moved downstream to warmer river reaches before the winter. Nightly movements only involved short distances (5 m) and no fish exceeded a single movement80 m. Daily activity was greatest during evening but late afternoon activity was observed in summer and fall. Results from this study identify areas within the upper Gila River where introduced Flathead Catfish consumption is likely to negatively impact native fish populations and managers can use this information to understand potential overlap with native species, target future removal efforts in areas where these fish are concentrated, and avoid stocking native fishes in reaches where Flathead Catfish tend to aggregate.

Download or read book Diel and Seasonal Patterns of Channel Catfish Movement and Habitat Use in the Lower Wabash River written by Hanna Gibbs Kruckman and published by . This book was released on 2016 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Biology of the Flathead Catfish Pylodictis Olivaris Rafinesque from the Wabash River with Special Reference to Its Intestinal Helminth Parasites written by Douglas B. Meikle and published by . This book was released on 1975 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of this paper is to discuss the biology of flathead catfish from the Wabash River with special attention to their intestinal helminth parasites. This includes a consideration of the age, size, foot habits and movements of P. olivaris within its habitat and some of the environmental factors that influence its behavior."--p. 6.

Download or read book Demographics of a Commercially Exploited Population of Flathead Catfish Pylodictis Olivaris in the Wabash River written by Cassi Jo Moody-Carpenter and published by . This book was released on 2013 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demographics and the Ecological Role of the Channel Catfish Ictalurus Punctatus in Commercially Exploited and Unexploited Reaches of the Wabash River with Implications for the Flathead Catfish Pylodictis Olivaris written by Robert E. Colombo and published by . This book was released on 2007 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Population Characteristics of Channel Catfish Ictalurus Punctatus and Flathead Catfish Pylodictis Olivaris in the Lower 200 Miles of the Wabash River written by Zachary J. Willenberg and published by . This book was released on 2000 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Linear Home Range and Movements of Flathead Catfish Pylodictis Olivaris in Two Mississippi Streams written by John A. Skains and published by . This book was released on 1992 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Telemetric Study of Homing and Home Range of Flathead Catfish Pylodictis Olivaris Rafinesque in a 850 Hectare Oklahoma Reservoir written by Larry Gene Hart and published by . This book was released on 1974 with total page 71 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 Freshwater Fishes of North America written by Melvin L. Warren, Jr. and published by Johns Hopkins University Press. This book was released on 2020-07-14 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: H. Wilson

Download or read book Reproduction Habitat Use Survival and Interpool Movement of Paddlefish in the Mid reaches of the Arkansas River Arkansas written by Steven B. Donabauer and published by . This book was released on 2007 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Ultrasonic telemetry was used to identify spawning areas, describe seasonal habitat use, estimate the survival of harvestable-size fish, and estimate the degree of interpool movement of paddlefish (Polyodon spathula) in the mid-reaches of the Arkansas River. Paddlefish were captured with gill nets and 15 and 50 fish were implanted with ultrasonic transmitters in Pool 13 and Ozark Lake (Pool 12), respectively. I conducted periodic searches for implanted fish and made 1,087 locations from January 2004 through December 2005. Gravid female paddlefish in Ozark Lake made long-range movements when water temperatures reached 10°C in the spring. Reproduction likely occurred in the tailwater below James W. Trimble (JWT) Lock and Dam 13 when water temperatures were between 13 and 19°C in late March to early April. Successful paddlefish reproduction was verified in 2004 and 2005 when 23 prolarval paddlefish were captured with ichthyoplankton nets. Seventy-six percent of post-spawn fish returned to their initial site of capture by the end of summer, where the remaining fish primarily occupied the mid-reach of Ozark Lake. Habitat use in Ozark Lake was nonrandom with in all seasons where paddlefish strongly selected for tributary mouth habitat and avoided shallow backwater habitats. Tailwater and inundated creek channel habitats were also preferred by paddlefish in the spring and summer, respectively. Individuals frequently moved among inundated creek channels in Ozark Lake, where paddlefish in Pool 13 selected submerged dikes. Mean water depth fish occupied was 6.7 m and it did not differ significantly among seasons. Water velocities and substrate compositions paddlefish utilized were statistically different among seasons. Commercial harvest during special 5-day seasons was 17% and 26% in Pool 13 and Ozark Lake, respectively. Recreational harvest was 10% in Ozark Lake. Three natural mortalities occurred during the study period, which resulted in a 7% annual natural mortality estimate. Interpool movement was infrequent with an annual emigration rate of 6% for paddlefish in Ozark Lake. Twenty-seven percent (6 of 22) of the transmitters recovered from sport and commercial anglers and gill net recaptures had failed 35 months into the advertised expected battery life of 48 months. Permanent censorships were more likely related to the high rate of transmitter failure than undocumented interpool movement or mortality. Although a project to deepen the navigation channel to 12 ft is authorized, paddlefish in Ozark Lake will likely retain access to 50% of the spawning habitat in the tailwater of JWT dam. Channel modification (dredging and dike construction) in proximity to the mouth of the Mulberry River may disturb an important paddlefish habitat where I recorded 48% of all locations.

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.