Fisheries and Wildlife Sciences publications (MU)
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Items in this collection are the scholarly output of the Department of Fisheries and Wildlife Sciences faculty, staff, and students, either alone or as co-authors, and which may or may not have been published in an alternate format. Items may contain more than one file type.
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Item Data from: The Distribution of a Stream-breeding Salamander, Desmognathus ocoee, in Terrestrial Habitat Suggests the Ecological Importance of Low-order Streams(2016) Connette, Grant M.; Osbourn, Michael S.; Peterman, William E.Stream location and salamander count data from a study conducted on the Nantahala National Forest, North Carolina, USA. Also provided is an R script for conducting the analyses described in the manuscript. See manuscript for full details of the methods.Item Data from: A multistate mark-recapture approach to estimating survival of PIT-tagged salamanders following timber harvest(2015) Connette, Grant M.; Semlitsch, Raymond D.Data associated with a PIT-tag telemetry study of salamanders conducted on the Nantahala National Forest, North Carolina, USA. Full details of this study will be provided in the manuscript.Item In Ovo Exposure to o,p´-DDE Affects Sexual Development But Not Sexual Differentiation in Japanese Medaka (Oryzias latipes)(National Institute of Environmental Health Sciences, 2003-01) Papoulias, Diana; Villalobos, Sergio A.; Meadows, John C.; Noltie, Douglas B. (Douglas Brian), 1958-; Giesy, John P.; Tillitt, Donald (Donald Edward), 1957-Despite being banned in many countries, dichlorodiphenyltrichloroethane (DDT) and its metabolites dichlorodiphenyldichloroethylene (DDE) and dichlorodiphenyldichloroethane (DDD) continue to be found in fish tissues at concentrations of concern. Like o,p´-DDT, o,p´-DDE is estrogenic and is believed to exert its effects through binding to the estrogen receptor. The limited toxicologic data for o,p´-DDE suggest that it decreases fecundity and fertility of fishes. We conducted an egg injection study using the d-rR strain of medaka and environmentally relevant concentrations of o,p´-DDE to examine its effects on sexual differentiation and development. The gonads of exposed fish showed no evidence of sex reversal or intersex. However, other gonad abnormalities occurred in exposed individuals. Females exhibited few vitellogenic oocytes and increased atresia. Male testes appeared morphologically normal but were very small. Gonadosomatic index values for both sexes were lower for exposed fish. Our observations of abnormal female and very small male gonads after in ovo o,p´-DDE exposure may be indicative of effects on early endocrine processes important for normal ovarian and testicular development.Item Longitudinal Differences in Habitat Complexity and Fish Assemblage Structure of a Great Plains River(American Midland Naturalist, 2010) Eitzmann, Jeffrey L.; Paukert, Craig Patrick, 1969-We investigated the spatial variation in the Kansas River (USA) fish assemblage to determine how fish community structure changes with habitat complexity in a large river. Fishes were collected at ten sites throughout the Kansas River for assessing assemblage structure in summer 2007. Aerial imagery indicated riparian land use within 200 m from the river edge was dominated by agriculture in the upper river reaches (.35%) and tended to increase in urban land use in the lower reaches (.58%). Instream habitat complexity (number of braided channels, islands) also decreased with increased urban area (,25%). Canonical correspondence analysis indicated that species that prefer high-velocity flows and sandy substrate (e.g., blue sucker Cycleptus elongatus and shovelnose sturgeon Scaphirhynchus platorynchus) were associated with the upper river reaches. Abundance of omnivorous and planktivorous fish species were also higher in the lower river. The presence of fluvial dependent and fluvial specialist species was associated with sites with higher water flows, more sand bars, and log jams. Our results suggest that conserving intolerant, native species in the Kansas River may require maintaining suitable habitat for these species and restoration of impacted areas of the river.