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Showing 1 to 20 of 25 for “"diet overlap"”.
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Food Habits and Diet Overlap of Age-1 and Older Walleye and White Bass in Lake Poinsett, South Dakota
… and September, 1998 to determine food habits and diet overlap using percent by weight to describe diets and Schoener's index (Cxy) to determine diet overlap. Macroinvertebrates were common prey items for white bass in all length groups during all sample dates. The primary macroinvertebrates …
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Diet overlap and habitat segregation between redbreast sunfish and age-o smallmouth bass in the North Anna River, Virginia
… into small, medium, and large size-classes. Diets of bass shifted from predominantly Chironomidae (Insecta: Diptera) in June to Baetidae (Insecta: Ephemeroptera) in July and August. Fish also became increasingly important diet components of bass when assessed volumetrically. Small and medium …
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DIET ANALYSIS OF NATIVE AND NON-NATIVE JUVENILE SALMONIDS IN A LAKE SUPERIOR TRIBUTARY
… of the region. My research evaluated the diet of five fish size categories (FSCs) of brook trout, non-native steelhead trout (<em>Oncorhynchus mykiss</em>), and coho salmon (<em>Oncorhynchus kisutch</em>) in a tributary of Lake Superior by using diet overlap and selectivity indices as …
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Food habits, population dynamics, and bioenergetics of four predatory fish species in Smith Mountain Lake, Virginia
… and compared by season using Schoener's (1970) diet overlap index. Significant diet overlap occurred between the pelagic predators (striped bass and walleye) and between the littoral black basses (largemouth bass and smallmouth bass) in all seasons and locations where sufficient stomach samples …
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Diet and Body Composition of Migrating Lesser Scaup (Aythya affinis) in Eastern South Dakota
… use in eastern South Dakota, (2) quantify the diets of lesser scaup, (3) evaluate diet overlap between lesser scaup and natives fishes and (4) quantify body composition of migrating lesser scaup. Twenty-nine semi-permanent wetlands located on the Prairie Coteau were sampled for …
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Exploring Interactions Between Walleye and Smallmouth Bass in South Dakota Waters
… of this study were to: 1) determine food habits, diet overlap, and the influence of prey and temperature on walleye and smallmouth bass in one Missouri River reservoir; 2) investigate whether population demographics and dynamics are inversely related for the two species across a range of South …
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Comparative resource use by two species of black bass in riverine and impounded sections of the New River, Virginia
… New River, Virginia. Resource use (habitat and diet) by the two species was investigated to determine patterns and extent of resource partitioning between them and how those patterns might differ between lotic and lentic environments. Individual fitness indicators (i.e., growth and body …
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Food Habits of Coyotes and Red Foxes in Western South Dakota As Determined By Fecal Analysis
… to determine if coyotes and red foxes exhibited diet overlap in areas where they are sympatric. Fecal samples of both species were collected in 1998 and 1999 in the west central (Haakon and north Jackson counties), northwest (Harding County), and Black Hills (Lawrence, Pennington and Custer …
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Diet and Feeding Behavior of Juvenile Alligator Snapping Turtles (Macrochelys Temminckii) in Eastern Oklahoma
… studies were conducted to 1) compare the diet of captive-reared juvenile M. temminckii to that of wild juveniles and investigate the diet overlap of juvenile M. temminckii with adult female Graptemys ouachitensis in the Caney River, where M. temminckii have been recently reintroduced, in …
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Interactions between Walleye Sander vitreus and Smallmouth Bass Micropterus dolomieu in Missouri River reservoirs
… However, expansion of Smallmouth Bass has overlapped with declining Walleye populations, prompting concerns regarding potential competition and predation. Yet, little research has assessed interactions between Smallmouth Bass and Walleye. My study helped to increase the understanding of …
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Food Resource Utilization By Five Species Of Benthic Feeding Fish In Passamaquoddy Bay, New Brunswick
… redundant variables (prey items), interspecific diet overlap and the degree to which stomach contents reflect benthic composition were assessed using discriminant functions analysis. Variables were ranked by their power to discriminate among pairwise comparisons of groups: fish species and …
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Assessment of the Effects of Habitat, Harvest and Community Interactions on the Abundance of Walleye Sander Vitreus in Inland Lakes Throughout Ontario
… bass have also been found to have a significant diet overlap with walleye. These interactions present challenges when establishing management objectives for mixed fisheries.
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Trophic interactions between larval gizzard shad and resident zooplanktivores in Claytor Lake, Virginia
… 1998 showed that peak abundances of larval shad overlapped temporally and spatially with both larval Lepomis spp. and larval alewife Alosa pseudoharengus. Peak larval shad density (0.04-0.06 fish/m3) was two to three orders of magnitude less than that reported from other reservoir systems, …
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Comparative Ecology of Juvenile Striped Bass and Juvenile Hybrid Striped Bass in Claytor Lake, Virginia
… hybrid striped bass did not exhibit significant diet overlap during the growing season. At a total length of approximately 120 mm, the juvenile moronids shifted from a mixed diet of zooplankton and invertebrates to a diet comprised primarily of age-0 fishes. However, after becoming piscivorous …
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Influence of Food Web Structure and Environmental Conditions on Walleye Stocking Success in Two South Dakota Impoundments
… condition, and proportion of taxa in Walleye diets was compared between lakes and sampling years. Condition and growth of Mina Lake Walleye was reduced due to a higher proportion of invertebrates and vegetation in diets. Survival, growth, and diet composition was measured for stocked Walleye …
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Factors affecting largemouth bass recruitment in a trophy bass reservoir of Virginia, Briery Creek Lake
… BCL, but was not higher than predation in SRR. Diet overlap between age-0 LMB and bluegill in BCL was >60% during June, indicating potential for competition. Zooplankton samples indicated that density of copepods was similar between reservoirs (2.3/liter); however, the average size of copepods …
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Competition Between Age-0 Largemouth Bass And Juvenile Bluegills In A Virginia Pond
… was consumed by bluegills. In spite of this, diet overlap between the species was low. Largemouth bass fed primarily on Calanoida, Ephemeroptera, and fish, while bluegills consumed Diptera and Cyclopoida. The fishery of the impoundment consisted of relatively high and moderate densities of …
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Biology of Age-1 and Older Yellow Perch in West-Central Minnesota Lakes
… adult yellow perch seasonal ontogeny in diet, and if age-1 and 2 yellow perch used larval fishes as a source of prey. Results from spring trap netting in 1999 indicated that yellow perch in the four study lakes exhibited slower growth than the Minnesota statewide average and rarely …
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A Bear's Eye View: Insight on American Black Bear (Ursus americanus) Hibernation and Foraging Ecology in Virginia's Central Appalachian Mountains
… Virginia in 2018 and 2019 to better understand diet seasonality and to determine habitat and environmental drivers of black bear foraging patterns, particularly on white-tailed deer (Odocoileus virginianus) and invasive plant species. We identified 178 unique diet items to family, genus, or …
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Energy Reserves in Native Freshwater Mussels (Bivalvia:Unionidae) with and without Attached Zebra Mussels: Effects of Food Deprivation
… shells. Gut analyses also revealed significant diet overlap between native unionids and infesting zebra mussels. Thus, competitive interactions or interference by zebra mussels likely reduced unionid ingestion and consequently reduced glycogen stores. During quarantine, unionids salvaged from a …
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