Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Pumpkinseed"”.
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Invasive fish effects on the invertebrate constituents of wetland communities
… Brook stickleback (Culaea inconstans) and pumpkinseed (Lipomis gibbosus) pose a potentially growing threat to temperate Pacific drainages of North America due to their ability to outcompete native fauna. Our study compares and contrasts the invertebrate constituents, their diversity, …
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The effect of hybridization on metabolism and hypoxia tolerance in sunfish
… tolerance of bluegill (Lepomis macrochirus), pumpkinseed (L. gibbosus), and their unidirectional F1 hybrids (male bluegill x female pumpkinseed). Electron transport system (ETS) complex activities were examined in isolated mitochondria of bluegill, pumpkinseed and hybrids. The specific …
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The Importance of Thermal Habitat Quality for Pumpkinseed (Centrarchidae: Lepomis gibbosus) in Small and Constructed Coastal Embayments Along the Northwest Shoreline of Lake Ontario
… and a few warm as much as local ponds. Age-0 pumpkinseed (Lepomis gibbosus) can fail to reach sufficient size to survive the winter in cooler embayments because their spawning is delayed and their growth is slowed. Most embayments along the Toronto shoreline are too cold to produce age-0 fish …
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Foraging ecology, sexual selection, and divergence in sunfish (Lepomis spp.)
… Using bluegill (Lepomis macrochirus) and pumpkinseed sunfish (Lepomis gibbosus), I examined three major questions: 1) how are diet and morphological variation related to alternative reproductive tactics in bluegill; 2) are sexual selection and disruptive selection driving divergence …
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Characterizing Patterns Of Round Goby (Neogobius Melanostomus) Distribution Using Morphometrics, Occupancy Modeling, And Population Genetics
… in affecting round goby invasion and the native pumpkinseed sunfish Lepomis gibbosus population along the lake shoreline as reflected by morphological differences, (2) estimated the co-occupancy of round goby and native benthic fish (i.e. darters) in the tributary system and (3) analyzed the …
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Differentiating the effects of two non-native fish in the Turnbull National Wildlife Refuge
… the brook stickleback, Culaea inconstans, and pumpkinseed, Lepomis gibbosus, on the aquatic invertebrates and food webs of Turnbull National Wildlife Refuge (TNWR). Ten ponds were analyzed and compared with stable isotope analysis and invertebrate abundance data. Three ponds were chosen to …
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Towards an understanding of seasonal ecophysiology in north-temperate fish
… data from field and experimental studies on pumpkinseed sunfish (Lepomis gibbosus) to investigate how early spring warming affects the reproductive process. Here, independently cued development of the liver mediated observed reproductive allocation. Earlier warming interrupted liver …
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An evaluation of systematic error in the estimation of fish population size
… methods were used to estimate the size of a pumpkinseed sunfish (<i>Lepomis gibbosus</i>) population in a 1.16 hectare Virginia farm pond. After estimates were obtained, the pond was drained in order to compare estimated population size with actual population size. In all cases, population …
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Characterizing spatial and temporal trends in fish community diversity in the inland lakes of Isle Royale, MI, USA
… most commonly lost, while blackchin shiner and pumpkinseed were most commonly gained. Larger lakes hosted more diverse communities, and lakes with higher elevation lacked northern pike and yellow perch. Overall, these results suggest the inland lake fish communities of Isle Royale have not …
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Nutritional condition and stress response of fishes along a gradient of habitat quality in the St. Lawrence River: physiological consequences of anthropogenic habitat degradation
… whereas white sucker Catostomus commersonii and pumpkinseed Lepomis gibbosus did not. Together, my results show that different species residing in identical habitats can demonstrate a variety of responses to environmental stress, highlighting the variation in physiological ability to cope under …
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Distribution and life history of the endangered James Spinymussel, pieurobema collina (bivalvia: unionidae)
… bluehead chub (Nocomis leptocephalus), pumpkinseed (Lepomis gibbosus), and fantail darter (Etheostoma flabellare) in the South Fork Potts Creek. Eleven fish families were tested for suitability as fish hosts in the laboratory, but only the following 7 species served as hosts: bluehead …
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Relative Abundance, Distribution, and Life Histories of Fish Species in the Colville River Watershed, Stevens County, Washington
… torrent sculpin (7.6%), green sunfish (>0.1%), pumpkinseed (1.1%), bluegill (>0.1%), largemouth bass (>0.1%), and yellow perch (0.5%). The stocking record, water quality, and barrier falls were examined to assess the effects they potentially have on species distribution. Stocking was found to …
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Detection of non-native freshwater fishes using environmental DNA
… and species-specific primers were developed for pumpkinseed Lepomis gibbosus, topmouth gudgeon Pseudorasbora parva, sunbleak Leucaspius delineatus, and fathead minnow Pimephales promelas. All four species were detected within 24 hours of introduction into aquarium tanks, and DNA of L. gibbosus …