Comparison Of Topographic Surveying Techniques In Streams,
2013
Utah State University
Comparison Of Topographic Surveying Techniques In Streams, Sara G. Bangen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Bonneville Power Administration (BPA) Fish and Wildlife Program (FWP) mitigates impacts, including mortality, from hydroelectric dams in the Columbia River Basin for ESA-listed salmon and steelhead populations and other species of special concern. Given the extensive economic resources invested in mitigation and the incredible diversity of in-stream habitat across the Columbia River basin, questions have arisen about which sampling strategies are most tractable across the entire Columbia River Watershed, but also produce datasets that allow researchers to answer meaningful questions about salmonid populations and trends in habitat. In response to these issues, the NOAA Integrated Status and Effectiveness Monitoring …
Effects Of Environmental Variables On The Reproduction Of Quagga Mussels (Dreissena Rostriformis Bugensis) In Lake Mead, Nv/Az,
2013
University of Nevada, Las Vegas
Effects Of Environmental Variables On The Reproduction Of Quagga Mussels (Dreissena Rostriformis Bugensis) In Lake Mead, Nv/Az, Richard Steven Ianniello
UNLV Theses, Dissertations, Professional Papers, and Capstones
In 2007, quagga mussels (Dreissena rostriformis bugensis) were found in Lake Mead and have spread downstream on the Colorado River and to other lakes and reservoirs in the Southwestern United States. The quagga mussel's extremely quick colonization of Lake Mead and annual veliger abundance trends provide evidence that the quagga mussels in the Southwest have different reproductive behavior than in previous habitats. This study is one of the first to specifically examine quagga mussel reproduction in the Southwest and examines how quagga mussel reproduction varies at sites known to have different temperatures and other environmental variables resulting from the input …
Comparing Aggression Levels In Jack Dempsey Cichlids Based On Variation Of Haitat Structure,
2013
Stephen F. Austin State University
Comparing Aggression Levels In Jack Dempsey Cichlids Based On Variation Of Haitat Structure, Johnne' Beaty, Bethany Sobray, Rachael Greer
Undergraduate Research Conference
Jack Dempsey cichlids, Rocio octofasciata, are native to South America and known for their aggressive behaviors. These fish are popular in freshwater aquariums, but can act aggressively towards other fish. In many species of fish individuals may behave aggressively to defend resources and the decision to defend these resources depends on factors such a habitat complexity (Oldfield 2011). Cichlids thus need ample room to maintain individual territories. Behavioral patterns in other species of cichlids have observed that the establishment of territories is constantly changing (Dijkstra et al. 2009). Individuals use information such as habitat complexity to adapt to environments, even …
Mechanisms Of Freeze Avoidance In Eggs Of The Antarctic Naked Dragonfish (Gymnodraco Acuticeps) And Atlantic Tomcod (Microgadus Tomcod),
2013
Eastern Illinois University
Mechanisms Of Freeze Avoidance In Eggs Of The Antarctic Naked Dragonfish (Gymnodraco Acuticeps) And Atlantic Tomcod (Microgadus Tomcod), Jeremy M. Carlson
Student Honors Theses
A remarkable number of marine teleosts belonging to the perciform suborder Notothenioidei and the paracanthopterygian suborder Gadoidei (cods and their allies) have evolved biophysical and physiological adaptations that promote freeze avoidance to temperatures as low as 1oC below the equilibrium freezing point of their body fluids (Cheng et al. 2003; Costanzo et al. 1995; Howes 1991; Raymond and DeVries 1977). Among the Notothenioids endemic to the Antarctic Ocean, the naked dragonfish (Gymnodraco acuticeps, Figure 1) inhabits the ice-laden waters near McMurdo Sound where the annual water temperature remains stable at -1.87 ± 0.1oC (Komatsu et al. 1970; Bargelloni et al. …
Bioremediation Mariculture In Zanzibar, Tanzania: A Viability Assessment Of Using Bath Sponge And Pearl Oyster Farms To Filter Highly Olluted Waters In The Zanzibar Channel,
2013
SIT Study Abroad
Bioremediation Mariculture In Zanzibar, Tanzania: A Viability Assessment Of Using Bath Sponge And Pearl Oyster Farms To Filter Highly Olluted Waters In The Zanzibar Channel, Hayley Oakland
Independent Study Project (ISP) Collection
Bioremediation of polluted water off the coastline of the urban center of Zanzibar—Stone Town, Unguja—was assessed for implementation feasibility through bath sponge and pearl oyster mariculture. A vast research base of the city’s coastal area exists, including the pollution concentrations at various locations, the ramifications of this pollution on the fringing ecosystems, and the relevant water circulation system of eddies and passageways produced by the north flowing East African Counter Current. In following the experimental examples of bioremediation projects around the world, this study tested facets of the filtration abilities of marine sponges and oysters. Both organisms suggested strong pollution …
Review Of The Negative Influences Of
Non-Native Salmonids On Native Fish Species,
2013
University of Nebraska—Lincoln
Review Of The Negative Influences Of Non-Native Salmonids On Native Fish Species, Kelly C. Turek, Mark A. Pegg, Kevin L. Pope
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Non-native salmonids are often introduced into areas containing species of concern, yet a comprehensive overview of the short- and long-term consequences of these introductions is lacking in the Great Plains. Several authors have suggested that non-native salmonids negatively influence species of concern. The objective of this paper is to review known interactions between non-native salmonids and native fishes, with a focus on native species of concern. After an extensive search of the literature, it appears that in many cases non-native salmonids do negatively influence species of concern (e.g., reduce abundance and alter behavior) via different mechanisms (e.g., predation and competition). …
Comparative Phylogeography Of The Emperor Snappers Lethrinus Lentjan And Lethrinus Harak (Lethrinidae: Percoidei) In The Coral Triangle,
2013
Old Dominion University
Comparative Phylogeography Of The Emperor Snappers Lethrinus Lentjan And Lethrinus Harak (Lethrinidae: Percoidei) In The Coral Triangle, Andrew B. Hines
Biological Sciences Theses & Dissertations
Many questions remain regarding the origins of the well-known peak in marine biodiversity found in the Coral Triangle. Barriers to gene flow may promote lineage diversification and provide the potential for speciation contributing to the high biodiversity in this area. Population structure was examined in two species of Emperor Snappers (Lethrinidae), Lethrinus harak and Lethrinus lentjan. These species were selected because they share similar life-history traits and geographic distributions, but differ in their habitat preferences. Specimens were collected from within the Coral Triangle as well as other localities across the Indo-Pacific. To investigate phylogeographic patterns and structure a hypervariable …
Fish Assemblages Associated With Natural And Anthropogenically-Modified Habitats In A Marine Embayment: Comparison Of Baited Videos And Opera-House Traps,
2013
Department of Fisheries, WA
Fish Assemblages Associated With Natural And Anthropogenically-Modified Habitats In A Marine Embayment: Comparison Of Baited Videos And Opera-House Traps, Corey B. Wakefield, Paul Lewis, Teresa B. Coutts, David V. Fairclough, Timothy J. Langlois
Fisheries Research Articles
Marine embayments and estuaries play an important role in the ecology and life history of many fish species. Cockburn Sound is one of a relative paucity of marine embayments on the west coast of Australia. Its sheltered waters and close proximity to a capital city have resulted in anthropogenic intrusion and extensive seascape modification. This study aimed to compare the sampling efficiencies of baited videos and fish traps in determining the relative abundance and diversity of temperate demersal fish species associated with naturally occurring (seagrass, limestone outcrops and soft sediment) and modified (rockwall and dredge channel) habitats in Cockburn Sound. …
Effect Of Anthraquinone Dyes On The Carbohydrate, Protein And Lipid Content In The Muscle Of Channa Punctatus And Cyprinus Carpio,
2013
Embry-Riddle Aeronautical University
Effect Of Anthraquinone Dyes On The Carbohydrate, Protein And Lipid Content In The Muscle Of Channa Punctatus And Cyprinus Carpio, Rajee Olaganathan, Jamila Patterson
Publications
Channa punctatus and Cyprinus carpio was exposed to sub lethal concentrations viz., 6.15 and 6.60 mg/l of vat blue 4 and vat green 1 respectively for a period of thirty days. The cumulative effect of these two dyes on the total carbohydrate, protein and lipid levels in the muscle of both the fishes were assayed on 7th, 18th and 30th day of exposure. The mean carbohydrate content of C. punctatus (both control and treated fish) collected on 18th and 30th day showed a significant difference (P < 0.01 to 0.04). In the case of control and treated C. carpio the data collected on 30th day showed significant variation (P < 0.04) in the carbohydrate content of the muscle. Student’s ‘t’ test analysis conducted on the protein content of C. punctatus during different occasions registered a significant decrease; in case of lipid content, except between the 1st and 30th day in all other cases the ‘t’ value is not significant. In case of C. carp protein and lipid content were observed to increase during the 7th day and thereafter a marked decrease was recorded on the 18th and 30th day of exposure. When the data was subjected to student’s ‘t’ test, both in protein and lipid, significant difference could not be recorded.
Evaluating The Effects Of Road Crossing Structures On Stream-Associated Amphibians In The Wilson River Watershed, Tillamook State Forest, Oregon,
2013
Portland State University
Evaluating The Effects Of Road Crossing Structures On Stream-Associated Amphibians In The Wilson River Watershed, Tillamook State Forest, Oregon, Sara Erin Twitchell
Dissertations and Theses
As replacement and removal of undersized culverts gains momentum as an effective technique for restoring natural stream flows and removing fish passage barriers, it is important to evaluate the benefits of these efforts on the in-stream and adjacent riparian habitat for other species of potential concern. This study compares stream-associated amphibian (SAA) occurrence in streams adjacent to different road crossing structures on unpaved forest roads in the Wilson River watershed located within the Tillamook State Forest, Oregon. Surveys were conducted at road crossing structures for three taxa of SAA; Pacific giant salamander (Dicamptodon tenebrosus), coastal tailed frog (Ascaphus truei), and …
Assessment Of A Rotenone Application Event At Mormon Island West Lake In Central Nebraska,
2013
Nebraska Game and Parks Commission
Assessment Of A Rotenone Application Event At Mormon Island West Lake In Central Nebraska, Keith D. Koupal, Brian C. Peterson, Casey W. Schoenebeck
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Fisheries managers applied rotenone to Mormon Island West in August of 2010 to renovate a fish community that was hypothesized to be unbalanced (i.e., dominated with gizzard shad and common carp) based on standardized survey results. We estimated species-specific biomass following the lake renovation to provide a baseline biomass estimate for a sand pit lake and to evaluate the effectiveness of standardized sampling gears. Gizzard shad (Dorosoma cepedianum) were abundant in all sampling gears, but mostly stock-size (>175 mm total length) and larger individuals were caught in gill and trap nets and sub-stock (≤175 mm total length) …
Fisheries Research Report No. 242 - Biology, Stock Status And Management Summaries For Selected Fish Species In South-Western Australia,
2013
Department of Primary Industries and Regional Development, Western Australia
Fisheries Research Report No. 242 - Biology, Stock Status And Management Summaries For Selected Fish Species In South-Western Australia, Claire B. Smallwood
Fisheries Research Reports
ObjectiveMany people are interested in fishes, but often it can be difficult to access reliable information on the biology, status and management of a particular fish species. Although there is a long history of world class fisheries research and management in Australia, the full details are generally only available in a fragmented manner in various scientific journals, books and reports. In some cases, these sources of information can be difficult to find and, even for fisheries researchers and managers, who usually have access to scientific journals, certain types of information such as unpublished reports or student theses, can be hard …
Decadal Variation In Egg Abundance Of A Mesopelagic Fish, Maurolicus Japonicus, In The Japan Sea During 1981-2005,
2013
Japan Sea National Fisheries Research Institute, Niigata Prefecture, Japan.
Decadal Variation In Egg Abundance Of A Mesopelagic Fish, Maurolicus Japonicus, In The Japan Sea During 1981-2005, Tadanori Fujino, Tsuneo Goto, Tsuyoshi Shimura, Hiroki Yasuma, Yongjun Tian, Hideaki Kidokoro, Shinya Masuda, Kazushi Miyashita
Journal of Marine Science and Technology–Taiwan
Egg abundance of Maurolicus japonicus, a dominant mesopelagic fish in the Japan Sea, was analyzed during 1981-2005 as an index of the spawning-adult abundance. There was a major change in egg abundance around 1988/1989, with negative anomalies occurring during 1981-1988 and positive anomalies occurring from l989. At about the same time (1986/1987), the Tsushima Current shifted from cold to warm conditions. Environmental indices were found to be positively correlated with egg abundance two years later. Our results suggest that the abundance of M. japonicus is affected by climatic regime shifts, and that it could be used as an indicator species.
Purification And Characterization Of Acidic Protease From Aspergillus Oryzae Bcrc 30118,
2013
Department of Seafood, National Kaohsiung Marine University, Kaohsiung, Taiwan, R.O.C
Purification And Characterization Of Acidic Protease From Aspergillus Oryzae Bcrc 30118, Li-Jung Yin, Ya-Hui Chou, Shann-Tzong Jiang
Journal of Marine Science and Technology–Taiwan
The acidic protease was purified from 4-day cultivation of Aspergillus oryzae BCRC 30118 by DEAE Sephacel and Sephacryl S-200 HR chromatographs. The specific activity, yield and purification fold were 117.62 kU/mg, 15.1% and 6.6, respectively. The molecular weight (M) was 41.0 kDa, while the optimal pH and temperature were 3.0 and 60°C, respectively. It was stable at pH 3.0-6.0 and 4-35°C. However, it was inhibited by Fe2+, Hg2+, Fe3+ and pepstatin A, and slightly by leupeptin and TPCK. According to substrate specificity and inhibitor study, it was a cysteine protease with activation energy of 37.5 kcal/mol. Its Km, Vmax, Kcat …
Behavioural Salinity Preferences Of Juvenile Green Sturgeon Acipenser Medirostris Acclimated To Fresh Water And
Full-Strength Salt Water,
2013
University of California, Davis
Behavioural Salinity Preferences Of Juvenile Green Sturgeon Acipenser Medirostris Acclimated To Fresh Water And Full-Strength Salt Water, J. B. Poletto, D. E. Cocherell, A. P. Klimley, J. J. Cech Jr., N. A. Fangue
School of Natural Resources: Faculty Publications
To quantify the salinity preference of juvenile green sturgeon Acipenser medirostris, two groups of A. medirostris [140 days post hatch (dph); total length (LT) 38.0–52.5 cm] were acclimated to either near fresh water (mean ± S.E. salinity = 3.2 ± 0.6) or full-strength salt water (34.1 ± 1.2) over 8 weeks. Following acclimation, the two groups were divided into experimental and control groups, where experimental A. medirostris from both freshwater and saltwater acclimations were individually introduced (200–220 dph) into a rectangular salinity-preference flume (maximum salinity gradient: 5–33). Control A. medirostris were presented with only their acclimation …
A Summary Of The Department Of Fisheries, Western Australia Invertebrate Research At Cocos (Keeling) Islands 2006-2011,
2013
Department of Primary Industries and Regional Development, Western Australia
A Summary Of The Department Of Fisheries, Western Australia Invertebrate Research At Cocos (Keeling) Islands 2006-2011, Lynda M. Bellchambers, Scott N. Evans
Fisheries Research Reports
The Cocos (Keeling) Islands are located in the Indian Ocean (12° 12” S, 96° 54” E). The group is comprised of two separate coral atolls, consisting of 27 islands. The southern atoll consists of 26 islands, surrounding a shallow lagoon, two of which are inhabited with a total population of approximately 600 people. Management of the Cocos (Keeling) Islands’ fish resources is conducted by the Department of Fisheries Western Australia (DoF), on behalf of the Commonwealth Government, under a Service Delivery Agreement (SDA). Between 2006 and 2011 DoF has conducted annual risk assessments to focus research and management objectives for …
Inland Aquaculture In Western Australia: Establishing An Aquaculture Operation Overview And Licensing,
2013
Department of Primary Industries and Regional Development, Western Australia
Inland Aquaculture In Western Australia: Establishing An Aquaculture Operation Overview And Licensing, Western Australian Department Of Fisheries
Fisheries Occasional Publications
The Department of Fisheries (Department) is continuing to improve the efficiency and transparency of the regulatory assessment processes for prospective aquaculture ventures, and is in the process of implementing initiatives to increase competitiveness and attract private investment for some larger-scale aquaculture proposals. Support provided by the Department, particularly in areas such as fish health, has contributed to the growth of the industry, which will be underpinned by a secure and informed policy platform to facilitate future growth.
A Method For Determining A Fee For Access To The Aquatic Environment For Aquaculture And Pearling Purposes,
2013
Department of Primary Industries and Regional Development, Western Australia
A Method For Determining A Fee For Access To The Aquatic Environment For Aquaculture And Pearling Purposes, Department Of Fisheries
Fisheries Occasional Publications
Water Lease Fees Working Group Report to the Hon Minister Norman Moore, MLC Minister for Fisheries July 2011
Continuous, Pulsed And Disrupted Nutrient Subsidy Effects On Ecosystem Productivity, Stability, And Energy Flow,
2013
South Dakota State University
Continuous, Pulsed And Disrupted Nutrient Subsidy Effects On Ecosystem Productivity, Stability, And Energy Flow, Michael J. Weber, Michael L. Brown
Natural Resource Management Faculty Publications
Resource pulses and subsidies can supply ecosystems with an important source of nutrients that supports additional productivity at multiple trophic levels. Common carp Cyprinus carpio provide ecosystems with a continuous nutrient subsidy through bioturbation and excretion but may also initiate a nutrient pulse through carcass decomposition. We examined how continuous (common carp foraging and excretion), pulsed (carcass decomposition) and disrupted (carp introduced and then removed) nutrient subsidies differed in their ability to alter nutrient availability, ecosystem productivity and stability and energy flow. Nitrogen and phosphorus availability and primary production were highest in pulsed, intermediate in continuous and lowest for disrupted …
Filling In The Gaps In Phenology And Life History Of The Cumberland Plateau Salamander (Plethodon Kentucki),
2013
Marshall University
Filling In The Gaps In Phenology And Life History Of The Cumberland Plateau Salamander (Plethodon Kentucki), Robert C. Bowers
Theses, Dissertations and Capstones
The Cumberland Plateau Salamander, Plethodon kentucki, is a member of the Plethodon glutinosus complex comprising 16 sibling species, which are best differentiated by range. Few studies have been conducted to gain information on the natural history of P. kentucki. To alleviate this, two sites at Beech Fork State Park in Wayne County, West Virginia were used to study the salamander’s general life history with emphasis on reproduction, phenology, and population size. At each site, three 20m x 20m sample plots were arranged based on viability of the habitat for P. kentucki. Ground searches of all cover objects …
