Gonadal Intersex In Teleosts: Mechanisms, Molecular Biomarkers And Diagnostic Assays,
2016
Purdue University
Gonadal Intersex In Teleosts: Mechanisms, Molecular Biomarkers And Diagnostic Assays, Ahmed M.E. Abdel-Moneim Mohamed
Open Access Dissertations
Natural and synthetic estrogenic and androgenic compounds are continuously released into aquatic ecosystems. Exposure of teleost fishes to these contaminants can negatively impact sex differentiation and reproductive output. Specifically, development of gonadal intersex in gonochoristic (fixed sex) fish species has been studied extensively in relation to exposure to this class of compounds. The main objectives of this dissertation were to: 1) conduct field and laboratory studies to investigate the molecular signaling pathways behind the development of gonadal intersex; and 2) establish molecular biomarkers and assays for testing the ability of environmental pollutants to develop this condition using a battery of …
Bloom Or Bust: Retrospective Analysis Of The Giant Jellyfish, Nemopilema Nomurai (Scyphozoa: Rhizostomeae), Ecology In The East Asian Marginal Seas,
2016
University of Southern Mississippi
Bloom Or Bust: Retrospective Analysis Of The Giant Jellyfish, Nemopilema Nomurai (Scyphozoa: Rhizostomeae), Ecology In The East Asian Marginal Seas, Naomi Yoder
Master's Theses
The Giant Jellyfish, Nemopilema nomurai, is a large-bodied bloom-forming jellyfish that occurs in the semi-enclosed basins of the East Asian Marginal Seas. N. nomurai has bloomed more frequently in the past 20 years than in any period previously recorded. In Japan, recent N. nomurai blooms were responsible for millions of dollars in lost revenue and equipment damage to commercial fisheries alone. This study statistically analyzed 21 environmental factors in connection with N. nomurai occurrence (using occurrence as a proxy for blooms). Eight factors resulted in a statistically significant or marginally significant (p ≤ 0.10), linear or non-linear relationship with …
Early Nutritional Programming To Enhance The Utilization Of Plant Based Diets In Fish (Largemouth Bass, Micropterus Salmoides),
2016
Kentucky State University
Early Nutritional Programming To Enhance The Utilization Of Plant Based Diets In Fish (Largemouth Bass, Micropterus Salmoides), Maya Rene Jackson, Cora Teets, Amit Kumar Yadav, Waldemar Rossi
Posters-at-the-Capitol
Aquaculture has been the fastest growing animal food-producing sector for over half a century. Sustainable aquaculture should include replacement of fish-based feed sources by plant-based ingredients. However, this approach is often impeded by poor growth in carnivorous fish such as largemouth bass (LMB, Micropterus salmoides) fed high levels of plant-based protein. Therefore, our overall goal of the present work was to develop alternative methods of utilizing the plant-based diets (PBD) for sustainable LMB production. When fish is exposed to PBD early in their life, they may accept them more efficiently at later stages (so called Nutritional Programing, NP). Therefore, …
Whiting Events Off Southwest Florida: Remote Sensing And Field Observations,
2016
University of South Florida
Whiting Events Off Southwest Florida: Remote Sensing And Field Observations, Jacqueline Long
USF Tampa Graduate Theses and Dissertations
“Whiting” is a term used to describe a sharply defined patch of water that contains high levels of suspended, fine-grained calcium carbonate (CaCO3). These features are named for their bright (at times white) appearance when compared to surrounding waters, and have been found to occur globally, persisting for multiple consecutive days. Although whitings have been widely studied using chemical, biological, geological, and physical techniques, there has been little effort to document their spatio-temporal distributions in a systematic way, not to mention the lack of consensus on what generates whitings and allows them to persist for days to weeks …
Fish Names Variability Traces The Geo-Historical Dynamics Of Moroccan Fishermen Communities,
2016
Institut National de Recherche Halieutique - Morocco
Fish Names Variability Traces The Geo-Historical Dynamics Of Moroccan Fishermen Communities, Hicham Masski, Abdelaziz Ait Hammou
Journal of Ecological Anthropology
Fish vernacular names in Morocco needs a structuring system. Though used widely, these names are highly variable and do not necessarily meet trade requirements. The 138 species considered in this study have 691 vernacular names and the vernacular names lists of the 16 study sites show large disparities. The most part of this variability is of linguistic origin coming from four geographic regions and thus cultural groups. Even if possible, the adoption of a unique standard, which is the goal of the national fisheries regulation authorities, might encounter resistance to its dissemination throughout fishermen and the local population.
Integrated Fisheries Management Resource Report Pearl Oyster (Pinctada Maxima) Resource,
2016
Department of Primary Industries and Regional Development, Western Australia
Integrated Fisheries Management Resource Report Pearl Oyster (Pinctada Maxima) Resource, Department Of Fisheries
Fisheries Management Papers
This report has been prepared to provide the Intergrated Fisheries Allocation Advisory Committee (Allocation Committee) with a summarised, factual account of the nature and status of the Pinctada maxima (P. maxima) pearl oyster resource and current and historical trends in its use and conservation.
Policy On The Application Of Fish Size Limits In Western Australia,
2016
Department of Primary Industries and Regional Development, Western Australia
Policy On The Application Of Fish Size Limits In Western Australia, Western Australia. Dept. Of Fisheries
Fisheries Management Papers
Fisheries managers can utilise a range of different types of management tools to assist with the sustainable management of fish stocks and to achieve other fisheries management objectives. For commercial fisheries these types of tools may include input controls (e.g. a limit on the number of operators, explicit effort limits and gear restrictions) and output controls (e.g. total allowable catches, individual catch quotas) or spatial and temporal restrictions. Recreational fisheries often have daily bag limits and possession limits as quasi output controls, while seasonal or other temporal closures can operate as input controls and be a component of limiting total …
A Review Of Size Limits For Finfish In Western Australia : Discussion Paper,
2016
Department of Primary Industries and Regional Development, Western Australia
A Review Of Size Limits For Finfish In Western Australia : Discussion Paper, Western Australia. Dept. Of Fisheries
Fisheries Management Papers
This management paper is designed to present proposals for changes to size limits that apply to finfish within Western Australia in line with the associated policy. In November 2016, the Department of Fisheries (Department) developed a policy on the application of fish size limits in Western Australia (Fisheries Management Paper no. 279 - Policy on the application of fish size limits in Western Australia).
Draft Allocation Report Pearl Oyster (Pinctada Maxima) Resource / By The Integrated Fisheries Allocation Advisory Committee,
2016
Department of Primary Industries and Regional Development, Western Australia
Draft Allocation Report Pearl Oyster (Pinctada Maxima) Resource / By The Integrated Fisheries Allocation Advisory Committee, Integrated Fisheries Allocation Advisory Committee
Fisheries Management Papers
Integrated Fisheries Management (IFM) is an initiative aimed at addressing the issue of how fish resources in Western Australia should be shared between competing users within the broad context of “Ecologically Sustainable Development”, or ESD, so that they can be managed to a sustainable allowable harvest level. The Minister for Fisheries (Minister) established the Integrated Fisheries Management Allocation Advisory Committee (Allocation Committee), under Section 42 of the Fish Resources Management Act 1994 (FRMA), in 2004 to investigate IFM resource allocation issues and make recommendations to him on optimal resource use.
Draft Allocation Report : Pearl Oyster (Pinctada Maxima) : Resource : By The Integrated Fisheries Allocation Advisory Committee,
2016
Department of Primary Industries and Regional Development, Western Australia
Draft Allocation Report : Pearl Oyster (Pinctada Maxima) : Resource : By The Integrated Fisheries Allocation Advisory Committee, Department Of Fisheries
Fisheries Management Papers
No abstract provided.
A Review Of Size Limits For Finfish In Western Australia : Discussion Paper,
2016
Department of Primary Industries and Regional Development, Western Australia
A Review Of Size Limits For Finfish In Western Australia : Discussion Paper, Department Of Fisheries
Fisheries Management Papers
No abstract provided.
Policy On The Application Of Fish Size Limits In Western Australia,
2016
Department of Primary Industries and Regional Development, Western Australia
Policy On The Application Of Fish Size Limits In Western Australia, Department Of Fisheries
Fisheries Management Papers
No abstract provided.
Ecosystem Based Fisheries Management Afs/Ocg 560x,
2016
University of Rhode Island
Ecosystem Based Fisheries Management Afs/Ocg 560x, Michael Cerbo
Library Impact Statements
No abstract provided.
Changes In Sublethal Effects And Lead Accumulation In Acanthopagrus Latus Under Various Lead Concentrations And Salinities,
2016
Department of Aquaculture, National Taiwan Ocean University, Taiwan, R.O.C.
Changes In Sublethal Effects And Lead Accumulation In Acanthopagrus Latus Under Various Lead Concentrations And Salinities, Wen-Ching Tsui, Jiann-Chu Chen, Sha-Yen Cheng
Journal of Marine Science and Technology–Taiwan
This study investigated the sublethal concentration of lead and calcium levels in yellowfin seabream juvenile (Acanthopagrus latus) (4.367 ± 0.470 cm; 1.408± 0.478 g) following exposure to a series of lead concentrations at various salinities (0‰, 9‰, 17‰, 25‰ and 34‰). Yellowfin seabream juveniles exposed to 17‰ salinity were the most tolerant to lead. After 96-h, the 50% lethal concentration (LC50) values were 0.33, 1.43, 3.78, 2.32 and 1.46 mg Pb2+ /L following exposure to 0‰, 9‰, 17‰, 25‰ and 34‰ salinities, respectively. The 6-, 12-, 24-, 48- and 96-h LC50 for fish exposed to 17‰ salinity were 124.67, 33.02, …
A Lota Lota Consumption: Trophic Dynamics Of Non-Native Burbot In A Valuable Sport Fishery,
2016
Utah State University
A Lota Lota Consumption: Trophic Dynamics Of Non-Native Burbot In A Valuable Sport Fishery, Stephen L. Klobucar, W. Carl Saunders, Phaedra Budy
Watershed Sciences Student Research
Unintentional and illegal introductions of species disrupt food webs and threaten the success of managed sport fisheries. Although many populations of Burbot Lota lota are declining in the species’ native range, a nonnative population recently expanded into Flaming Gorge Reservoir (FGR), Wyoming–Utah, and threatens to disrupt predator–prey interactions within this popular sport fishery. To determine potential impacts on sport fishes, especially trophy Lake Trout Salvelinus namaycush, we assessed the relative abundance of Burbot and quantified the potential trophic or food web impacts of this population by using diet, stable isotope, and bioenergetic analyses. We did not detect a significant …
Intensive, Regular Sampling And Removal Of Modest Numbers Of Fishes Shows No Measurable Impact On Fish Populations In Three Streams Of North Georgia,
2016
Roanoke College
Intensive, Regular Sampling And Removal Of Modest Numbers Of Fishes Shows No Measurable Impact On Fish Populations In Three Streams Of North Georgia, Steven L. Powers
Southeastern Fishes Council Proceedings
Recent publications and restrictions on collecting by state fish and game managers indicate a growing concern regarding the impact of field sampling on native fish populations. To evaluate the validity of these concerns, data from five life-history studies conducted in Cherokee County, Georgia were examined to test the hypothesis that regular sampling has a negative impact on fish populations. Number of individuals collected was divided by time collecting to calculate catch per unit effort (CPUE) as an indicator of relative abundance for each species. The collecting sequence (i.e. the number of times a species had previously been sampled) was regressed …
Measurement Of Fisheries Compliance Outcomes : A Preliminary National Study : Frdc Final Report,
2016
Department of Fisheries, WA
Measurement Of Fisheries Compliance Outcomes : A Preliminary National Study : Frdc Final Report, E Price, Roy Melville-Smith, D King, Timothy J. Green, W Dixon, S Lambert, T Spencer
Fisheries Research Reports
This report presents the results of a project undertaken by a group of Australia and United States based fishery compliance experts to assess and compare methods for measuring fisheries compliance outcomes that can be used to assess and compare the effectiveness of fishery enforcement and compliance assistance activities. This eight month project was requested in 2013 by Australia’s National Fisheries Compliance Committee (NFCC) as a way to provide fisheries compliance groups with improved methods for measuring and tracking the effectiveness of their activities and for justifying and managing their budgets.
Fish Diversity And Coral Health Of Tanzania's Reefs: A Comparative Study Between The Ushongo Village Reef And The Fungu Zinga Reef Over Time,
2016
SIT Study Abroad
Fish Diversity And Coral Health Of Tanzania's Reefs: A Comparative Study Between The Ushongo Village Reef And The Fungu Zinga Reef Over Time, Della Turque, Corinne Casper
Independent Study Project (ISP) Collection
The world’s oceans are becoming increasing acidic due to global climate change, posing a threat to marine ecosystems, including coral carbonate systems. Environmental threats are exacerbated by human development stressors as well: growing populations, dependency on marine resources, and unsustainable practices invaluable marine ecosystems at risk. Tanzania’s coral reef system extends for 3580 km2 (Muhando et al. 2008) near the Tanga region, serving over half a million people who are highly dependent on fishing and other marine resources as their livelihoods (Samoilys et. al. 2008). With Tanzania’s population rapidly growing, the unsustainable pressure on coral reefs for sustenance and livelihood …
Reef Fish And Coral Assemblages On Hospital Point And Near Bastimentos Island, Panama,
2016
SIT Study Abroad
Reef Fish And Coral Assemblages On Hospital Point And Near Bastimentos Island, Panama, Elaine Shen
Independent Study Project (ISP) Collection
Because worldwide declines coral reef health are of major concern, studying coral reefs through the lens of conservation efforts at local scales is essential for determining and monitoring effective policy measures. In the Bocas del Toro Archipelago, there are conflicts of interest between exploitative rapid tourism development, overfishing practices, and national efforts to conserve the local marine biodiversity. Coral and reef fish species abundance richness, diversity, evenness, and similarity were measured to see how coral and reef fish assemblages changed between protected and unprotected areas. A total of 329 fish and 322.5 square meters of benthos were analyzed using underwater …
Benthic Algae And Diatom Communities In Seagrass Meadows Under Three Different Human Impact Regimes In Bocas Del Toro, Panamá,
2016
SIT Study Abroad
Benthic Algae And Diatom Communities In Seagrass Meadows Under Three Different Human Impact Regimes In Bocas Del Toro, Panamá, Averyl Cheng
Independent Study Project (ISP) Collection
In Bocas del Toro, Panamá, widespread tourism has been the main source of revenue and has become an increasing threat to seagrass meadows and the organisms they support. This study aimed to investigate and describe algae and diatom communities under three different regimes of anthropogenic disturbance: high, medium and low human impact. The biodiversity was analyzed by measuring the algae and diatom assemblages with Shannon-Weiner’s Biodiversity Index, Evenness Index and Sorensen’s coefficient. The data obtained from these three diversity indices were compared to the areas along an anthropogenic disturbance gradient of high, medium and low impact. A total of 12 …
