Global ETD Search

1	Efficacy of in situ artificial refugia to increase recruitment of the Barrens topminnow in the presence of invasive western mosquitofish a thesis presented to the faculty of the Graduate School, Tennessee Technological University / Watts, Allison V. January 2009 (has links) Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on June 29, 2010). Bibliography: leaves 21-25. Barrens topminnow. Western mosquitofish.
2	Food, Feeding Selectivity, and Ecological Efficiencies of Fundulus notatus (Rafinesque) (Osteichthyes; Cyprinodontidae) Atmar, Gerald Legare 08 1900 (has links) This study was made to further define the trophic dynamics of Fundulus notatus by determining its ration composition under natural conditions, measuring feeding selectivity under various laboratory conditions of prey-species composition and availability, and determining the efficiencies with which F. notatus utilizes ingested chironomid larvae. Bayou topminnow. Fundulus notatus nutrition
3	Assessment of exhaustion-threshold curves for fish volitionally swimming in culverts a thesis presented to the faculty of the Graduate School, Tennessee Technological University / Harvey, James A., January 2009 (has links) Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on Aug. 19, 2009). Bibliography: leaves 37-41.
4	THE SONORAN TOPMINNOW (POECILIOPSIS OCCIDENTALIS) AND THE MOSQUITOFISH (GAMBUSIA AFFINIS): A TEST OF EMIGRATORY BEHAVIOR Dean, Sheila Ann January 1987 (has links) In experimental pools open to emigration, mosquitofish (Gambusia affinis) resided at higher densities than topminnow (Poeciliopsis occidentalis). When Gambusia were introduced to Poeciliopsis pools, all topminnow maintained residency. Only 11% of the Gambusia emigrated from the mixed populations before the plant cover was removed; with no cover, 59% left. A significant number of Gambusia in single species pools also responded to a loss of cover by emigrating. Continuing residency of Poeciliopsis after introduction of Gambusia supports findings that displacement by mosquitofish is not an immediate process. Frayed fins on resident topminnow suggest short-term agonistic interactions. Coexistence of an exotic species (Gambusia) and an endangered desert fish (Poeciliopsis) may depend on the complexity, or spatial variation, of the Southwest's few remaining cienegas. The opportunity to disperse from pools in these habitats may be an important factor in Poeciliopsis survival; such emigratory behavior can be tested in open experimental systems. Western mosquitofish Gila topminnow. Fishes -- Arizona.
5	The Effect of Dredging on Fish Communities in Agricultural Streams in Crawford, Sandusky and Seneca Counties of Ohio. Selden, Justin D. 27 November 2013 (has links) No description available. Agriculture Animals Aquaculture Aquatic Sciences Animal Sciences Biology Biostatistics Conservation Ecology Environmental Geology Environmental Science Environmental Studies Geology Geobiology Hydrology Natural Resource Management Organismal Biology Sustainability Wildlife Conservation Wildlife Management Zoology Agriculture fish community morphology stream ditch river shiner minnow darter sunfish chub stoneroller dace topminnow Shannon Diversity Simpson's Index IBI Index of Biotic Integrity Richness Abundance dredge coefficient of variation

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