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 20 of 68 for “"amphipods"”.
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Gammaridean amphipods from Tomales Bay, California
… the sediment-dwelling, infaunal gammaridean amphipods of Tomales Bay and to relate their distribution to known variations in the physical environment. Also, the Tomales Bay amphipod fauna is compared to the faunas of other West Coast bays.
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Can Amphipods be used to monitor mining-impacted lakes?
… determine seasonal abundance and metal burden of amphipods in nine chain lakes and a reference lake (Benewah L.) and (2) compare aqueous trace metal levels and limnologic parameters from lake water to patterns in amphipod abundance, size, and metal burden. I predicted that aqueous metal …
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The sensory mediation of symbiosis between hyperiid amphipods and salps
Hyperiid amphipods are open ocean crustaceans which use gelatinous planktonic animals for food, shelter, and brooding space for their offspring. These associations involve varying degrees of host specificity; and there are few obvious correlations between gross morphology of the amphipods and the …
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AMPHIPODS ARE STRONG INTERACTORS IN THE FOOD WEB OF A BROWN-WATER SALMON RIVER
… the foodweb is dominated by ubiquitous benthic amphipods (Anisogammarus kygi) that consume salmon carcass material. We hypothesized that A. kygi are a strong interactor in the feedback loop which links dead spawner biomass to juvenile salmonid growth. We found that A. kygi had a complex life …
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AMPHIPODS ARE STRONG INTERACTORS IN THE FOOD WEB OF A BROWN-WATER SALMON RIVER
… the foodweb is dominated by ubiquitous benthic amphipods (Anisogammarus kygi) that consume salmon carcass material. We hypothesized that A. kygi are a strong interactor in the feedback loop which links dead spawner biomass to juvenile salmonid growth. We found that A. kygi had a complex life …
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Aquatic toxicity of one dimensional carbon nanomaterials
… one dimensional carbon nanomaterials (CNMs) to amphipods, midge, oligochaetes and juvenile mussels in water and sediment. As-produced or modified carbon nanotubes (CNTs) and silicon carbide nanowires (SiCNW) were selected to represent CNMs. Sediment tests were conducted for 10-d with SiCNW and …
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Diet and Body Composition of Migrating Lesser Scaup (Aythya affinis) in Eastern South Dakota
… melas) and yellow perch (Perca flavescens). Amphipods were consistently found in diets of lesser scaup, although they generally represented a low proportion of total energetic contribution. In earlier studies (1980s), the frequency of occurrence of amphipods in scaup diets was noted at 51% …
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Host-parasite interactions between the cysticercoid larvae of the cestode Microsomacanthus hopkinsi and the amphipod intermediate host Hyalella azteca
… parasite loads, and short-term survival in amphipods exposed during Instars 1, 2, 3, 4, 6, 8 and 9. Oncosphere consumption, short-term survival, and intensity of infection were generally similar among older amphipods. No correlation was found between oncosphere consumption and cysticercoid …
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Biodiversity and Biogeography of Amphipod Crustaceans
… assessments of the diversity and biogeography of amphipods and put a regional-scale study in Indonesia into a global context. This thesis first assessed trends in species descriptions across all, benthic, pelagic, marine, freshwater, and subterranean amphipods. The prediction of the number of …
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Comparative Systematics of Subterranean Amphipod Crustaceans in the Families Crangonyctidae and Bogidiellidae
… two different taxonomic groups of subterranean amphipods (Crustacea). Therefore, rather than being a single project, this study is divided into several sub-projects. Altogether, the chapters for the sub-projects are composed of five publications. An introductory chapter and a summarizing …
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Composition, Biomass, and Protein Content of a Lemna trisulca L., Invertebrate Community in a Prairie Wetland
… Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star duckweed. Significant variability was found …
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The systematics, distribution and aspects of the ecology of the freshwater amphipod genus Paramelita (Crangonyctoidea: Paramelitidae)
Freshwater amphipods in southern Africa are divided into three distinct elements. Five ingolfiellid species occur in Namibia, six Sternophysinx species are found in the northern Cape Province and Transvaal, while 12 Paramelita species are restricted to the south-western Cape. The crangonyctoid …
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Hypoxia-Limited Survival, Respiration, and Mate-Guarding Behavior in the Amphipod Gammarus Pseudolimnaeus Bousfield
… in Lake Taneycomo could be a limiting factor for amphipods in the lake. Currently, the Army Corps of Engineers uses oxygenation procedures at Table Rock Dam to defend 4.0 ppm dissolved oxygen (D.O.) in water entering Lake Taneycomo. However, little information exists to indicate whether this level …
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Feeding habits of the yellowtail flounder and production of its invertebrate prey on Georges Bank
… Abundant over large areas of Georges Bank, these amphipods are important prey of yellowtail flounder. From benthic grab samples collected quarterly during 1981 to 1983, over 200 individuals of each species were measured for each sampling date. The computer program NORMSEP separated the …
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Intersexuality and Endocrine Disruption in the Amphipod Echinogammarus marinus – From Genes to Physiology
… and reduced sperm counts were revealed in amphipods from industrial impacted sites. The microsporidian species infecting E. marinus were identified for the first time, and Dictyocoela duebenum and Dictyocoela berillonum were found to be dominant in Inverkeithing and Portsmouth Harbour E. …
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Macroinvertebrate Response to Management Strategies and Habitat Condition at Kealia Pond NWR, Maui, Hawaii
… Invertebrate richness and densities of isopods, amphipods, crawfish, odonates, and Chironomus spp. Were highest in vegetated habitats with fresh ground water inputs. In contrast, corixids and Polypedilum nubifer were most common in habitats with patchy vegetation or bare substrate. Isopods and …
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Fate and effects of triallate in a prairie wetland
… with rising sediment concentrations. Levels in amphipods and aquatic plants also increased. Effects of triallate were evaluated for phytoplankton, periphyton, zooplankton (Daphnia pulex) and amphipods (Hyalella azteca). Biomass of phytoplankton and periphyton was not affected by triallate. …
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