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Rozprawy doktorskie na temat „Crab fishers”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Rachor, Hornsby Jacquelyn Lee. "Measuring Regulatory and Noncompliance Prevalence Among Maryland Commercial Blue Crab Fishers." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7327.

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Few empirical studies exist that compare regulation (R) and fishing crime (VL). The lack of information about R and VL effects stakeholder decision-making. Crime weakens conservation efforts and creates false baseline data. This furthers R and the cycle repeats. The purpose of this correlational study was to determine the statistical association between the number and type of annual commercial blue crab R and VL of the same. The Pearson's R correlation was used to analyze the data because it demonstrated the strength of each relationship. This quantitative study was grounded in enforcement the

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Sanoara, Yasmin. "Enhancing the Sustainable Livelihood of Crab Fishers: A Study of the Mud Crab Value Chain of Coastal Bangladesh Using the Social Business Model." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/70493.

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This study investigates how to enhance sustainable livelihood of mud-crab fishers of Bangladesh in the premise of the existing cumbersome and manipulative value chain that threatens fishers’ livelihood. Guided by the social business model, the study proposes a revised cooperative-based crab value chain; and unveils that individual and channel factors influence the benefits and barriers of the proposed cooperative. This eventually influences fishers’ attitude and intention towards cooperative and thus helps achieve their sustainable livelihood.

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Tallack, Shelly M. L. "The biology and exploitation of three crab species in the Shetland Islands, Scotland : Cancer pagurus, Necora puber and Carcinus maenas." Thesis, Open University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272972.

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McCambridge, Claire. "Fishery sustainability and welfare of the edible crab, Cancer pagurus." Thesis, Queen's University Belfast, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707832.

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Manual declawing of Cancer pagurus before return to the sea and during storage aboard fishing vessels has been legal in Northern Ireland (NI) since the revocation in 2000 of the Crab Claws (Prohibition of Landing) Order (1986). However, the paucity of objective data on this fishery practice has raised concerns for the sustainability and welfare of C. pagurus. Feeding ability of edible crabs was examined by either inducing autotomy or manual declawing of a walking leg, one or both chelae, before crabs were offered prey items. Crabs were offered mussels, Mytilis edulis, to assess if having one o

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Giuranna, Anne M. "Income and harvest effects of alternative management policies on commercial crab potters in Virginia." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020315/.

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Smith, Barry Douglas. "An evaluation of the current minimum legal size limit for the Dungeness crab (Cancer magister Dana) fishery near Tofino, British Columbia." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29393.

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The Dungeness crab (Cancer magister Dana) trap fishery in British Columbia has been regulated by a minimum legal size limit of 165 mm spine-to-spine carapace width (CW, 154 mm notch-to-notch CW) since early this century. Evaluation of the size limit by yield- and eggs-per-recruit analyses has been precluded by a lack of information on basic population variables such as growth, mortality, movement and mating behavior. Information on these variables was obtained in an intensive two year study of the Dungeness crab fishery near Tofino, B.C. from April 1985 until March 1987. A cohort of pre-recrui

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Stoffle, Richard W. "Antigua Mithrax Crab Mariculture Presentation." University of Arizona Libraries, Special Collections, 2013. http://hdl.handle.net/10150/297465.

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This presentation was created to supplement the Mithrax Crab culture technical report Caribbean Fishermen Farmers and provide images that can further convey an understanding of the analysis and findings presented in the Antigua portion of the report.

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Patterson, Lynsey. "The edible crab, cancer pagurus, fishery : population structure, trapability and welfare issues." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479404.

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Stoffle, Richard W. "Dominican Republic Mithrax Crab Mariculture Presentation." University of Arizona Libraries, Special Collections, 2013. http://hdl.handle.net/10150/297468.

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This presentation was created to supplement the Mithrax Crab culture technical report Caribbean Fishermen Farmers and provide images that can further convey an understanding of the analysis and findings presented in the Dominican Republic portion of the report.

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Sheehan, Emma Victoria. "Ecological impact of the Carcinus maenas (L.) fishery 'crab-tiling' on estuarine fauna." Thesis, University of Plymouth, 2007. http://hdl.handle.net/10026.1/2339.

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The ecological effects of the green shore crab Carcinus maenas (L.) fishery was investigated in estuaries on the south west coast of the UK. The fishery known as 'crab-tiling' involves 'crab-tilers' laying artificial refugia such as car tyres, guttering or roof tiles, intertidally in estuaries. 'Crab-tiles' are specifically laid on mudflats and sandflats to attract moutling crabs seeking refuge, these crabs are then collected to use or sell as bait for recreational angling. Many estuaries that are crab-tiled are subject to a range of International, European and National legislation as they are

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Webster, Janet Brown. "Identification and characterization of a psychotrophic Clostridium sp. isolated from spoiled pasteurized crabmeat /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-07102009-040239/.

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Mirera, David Oersted. "Capture-based mud crab (Scylla serrata) aquaculture and artisanal fishery in East Africa- Practical and ecological perspectives : Mud crab ecology and aquaculture." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-32399.

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Mud crab Scylla serrata is a crustacean that spends most of its life cycle in the mangrove environment throughout its range. Fishery and aquaculture of this crab are significant economic activities in coastal areas in the tropics and sub-tropics because of the meat quality and nutritional value. However there is a significant shortage of information on the ecology, fishery and aquaculture of these crabs in sub-Saharan Africa. This impacts the development of a sustainable aquaculture and fishery for the benefit of coastal communities. The present study analyses various aspects of mud crab ecolo

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Obregón, Lafuente Clara. "The social-ecological dimensions of small-scale crab fisheries in Western Australia." Thesis, Obregón Lafuente, Clara (2021) The social-ecological dimensions of small-scale crab fisheries in Western Australia. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/62281/.

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The pivotal role of humans in social-ecological systems has been globally recognised, particularly for fisheries, yet human dimensions are often overlooked. The blue swimmer crab (Portunus armatus) is the most popular recreational fishery in south-western Australia and also supports a small-scale commercial fishery. This study analysed the human dimensions of this fishery using qualitative and quantitative data, including those extracted from interviews with commercial and recreational fishers, newspaper records and the literature. Social network analysis was used to define the fishery network

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Araújo, Ana Rosa da Rocha. "Fishery statistics and commercialization of the mangrove crab, Ucides Cordatus (L.), in Bragança, Pará, Brazil." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980333105.

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Araujo, Ana Rosa da Rocha. "Fishery statistics and commercialization of the mangrove crab, Ucides cordatus (L.), in Bragança - Pará - Brazil." reponame:Repositório Institucional da UFS, 2006. https://ri.ufs.br/handle/riufs/1037.

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This research was part of the scientific MADAM project developed in collaboration between Brazil and Germany. The work focused on fishery statistics and commercialization of the mangrove crab, Ucides cordatus, from the mangrove areas in Bragança District, Para, Brazil. The study area was situated in a continuous mangrove area spanning three districts of the Pará State coast: Tracuateua, Bragança and Augusto Correa. This 6.000 km2 area extends between the northeastern coast of Pará State and the northwestern coast of the Maranhão State (480 km of real coastline). The total mangrove area avail

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White, Carole Sandrine. "Social resilience, place and identity in the small-scale North Norfolk 'Cromer Crab' fishery, UK." Thesis, University of East Anglia, 2015. https://ueaeprints.uea.ac.uk/58270/.

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Fishing once defined many coastal community identities around the British Isles. Over recent decades, these communities have faced the decline of their fishing industry in addition to demographic, environmental, economic change and a changing policy context in coastal areas focused on marine conservation and economic growth. Using a qualitative case study of a smallscale crab fishery, in North Norfolk, famous for its iconic ‘Cromer Crab’, I investigate place identity and attachment and their implications for social resilience. Like many coastal fishing towns, Cromer has become less reliant on

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Webb, Joel B. "Reproductive potential of snow and tanner crab in Alaska." Thesis, University of Alaska Fairbanks, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3670461.

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<p> Fisheries for snow (<i>Chionoecetes opilio</i>) and Tanner (<i>C. bairdi</i>) crab in Alaska are managed with large male only harvest regulations. Management of sex-selective crab fisheries could be enhanced by improved understanding of the functional relationship between male harvest and female reproductive potential. This research advances knowledge of factors associated with variation in reproductive potential by characterizing factors influencing female sperm reserves for Tanner crab, identifying factors associated with variability in fecundity for female snow crab in the eastern Berin

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Sivaipram, Itchika. "Crab Larval Abundance and Settlement Patterns in a Changing Chesapeake Bay." W&M ScholarWorks, 2018. https://scholarworks.wm.edu/etd/1550153654.

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All estuarine crabs have two larval stages, the zoea and the megalopa. Zoeae are entirely planktonic, whereas megalopae begin as plankton before beginning to search for settlement substrates as late stage megalopae. At both stages, crab larvae are subject to environmental conditions of the estuary. With changing environmental conditions due to anthropogenic activities and climate change, an understanding of how these planktonic larvae respond to environmental conditions is necessary for understanding subsequent larval supply to benthic populations and implication for fisheries management and h

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Wood, Megan. "Juvenile Blue Crab (Callinectes Sapidus) Response to Altered Nursery Habitat." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1499449868.

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Habitats of Chesapeake Bay have been altered due to anthropogenic impacts and climate change. Due to these human disturbances, seagrasses have been extirpated from many areas in lower Chesapeake Bay and persisting beds face future losses as water temperatures continue to rise. Further loss of seagrass habitat will negatively impact juvenile blue crabs (Callinectes sapidus) that use seagrass beds as nursery grounds. Habitat degradation allows for more successful introductions of exotic species, and the communities formed from the mixing of native and exotic species are known as emerging ecosyst

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Ayangbile, Gbemiga A. "Utilization of crab processing waste and chitin associated with the waste as feed for ruminants." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54763.

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Four experiments were conducted with crab processing waste. Addition of 1.5% propionic/formic acid prevented degradation up to 14 d. Desirable fermentation was achieved when 32% of the treated crab waste was ensiled with 32% straw, 16% molasses, and 20% water with or without .1% microbial inoculant. The pH of the silage was lowered and high concentration of lactic acid was observed. Use of .2% NaOCl or .4% H₂O₂ retarded spoilage of crab processing waste up to 7 d. Ensiling of the treated waste (32%), straw (32%), molasses (16%), and H₂0 (20%) indicated that the chemical used in preservation en

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Ondes, Fikret. "Fisheries ecology of the brown crab (Cancer pagurus L.) in the Isle of Man." Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/fisheries-ecology-of-the-brown-crab-cancer-pagurus-l-in-the-isle-of-man(ebe29b3e-09fa-4681-849b-91eab2144bf1).html.

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The brown crab or European edible crab Cancer pagurus is one of the most economically important crab species in European waters with landings of 49 263 t in 2013. C. pagurus is also one of the most important commercial species in the United Kingdom with landings of 28 778 t in 2013 worth approximately £33.5M at first sale. The global capture production of brown crab has increased markedly during the last two decades. Despite this, the crab fishery is relatively data poor in terms of the ecology and catch characteristics of this species, particularly in the Irish Sea. The aims of this study wer

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Hong, Gi-Pyo. "A technology analysis of the U.S. Atlantic blue crab (Callinectes sapidus) processing industry." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39113.

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The dehydration rates of crabs during low temperature storage and various cooking processes were determined. Season, cooking time, and cooking method significantly affected the weight loss of crabs. The thermal energy (F250 ) crabs received during a commercial cooking process was evaluated by season, cooking method and time, and crab type. The effects of sex, size, and type (sexual maturity) of crab and season on the yields of lump, top flake, bottom flake, and claw and total meat were examined. The effects of cooking time and method and storage time on meat yield was also determined. During s

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Crowley, Claire Elizabeth. "Florida Fishery-Wide Reproductive Indices of Stone Crab, Menippe mercenaria, and Their Application to Stock Assessment and Management." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/6821.

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The stone crab, Menippe mercenaria, supported the third most valuable fishery in Florida in 2016. Declining catch per unit effort (CPUE) and overall negative trend in landings since 2000 have raised concerns among fisherman, researchers, and fishery managers about the resiliency of the fishery. The Florida Fish and Wildlife Research Institute estimated that the Florida stone crab fishery has been overexploited since 1997. Overexploited fisheries, such as the commercial stone crab fishery, risk induced changes in life history parameters, such as age at maturation and rep

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Stoffle, Richard W. "Caribbean Fisherman Farmers: A Social Impact Assessment of Smithsonian King Crab Mariculture." Institute for Social Research, University of Michigan, 1986. http://hdl.handle.net/10150/293023.

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This is an assessment of the social and cultural factors that potentially will influence the transfer of Caribbean King Crab or Mithrax mariculture as it has been developed in two West Indian project sites. The projects are located in Nonsuch Bay, Antigua, and Buen Hombre,Dominican Republic. The projects derive from an original proposal entitled "A New Mariculture Project for the Lesser Antilles," which was submitted by the Smithsonian Institution, Marine Systems Laboratory (MSL), to the U.S. Agency for International Development (AID). That project was funded as AID Project No. 598 -065. This

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Wolfe, Christopher L. "Biological and physical treatment of crab processing industry wastewaters." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-08042009-040526/.

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Hinchliff, Laura. "The velvet swimming crab (Necora puber) fishery in Northern Ireland : a study of populations and welfare to enhance sustainability." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727396.

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The velvet swimming crab fishery is a relatively recent development in Ireland and the UK. The collapse of the traditional fishery in the Mediterranean in the 1980’s enabled this previous pest species to become a commercially significant sector in Northern Ireland. Now the second most important commercial fishery species in Northern Ireland, recent declines in catch have caused concern among local fishermen and industry. Limited information currently exists on current velvet crab populations and trends in fishery catch in Northern Ireland. To provide initial baseline information, studies of fi

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Hearn, Alex. "The biology and fishery of the velvet swimming crab, Necora puber (L.) (Brachyura, Portunidae) in the Orkney Islands, UK." Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/1107.

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Maier, Éder Leandro Bayer. "A pesca do siri como adaptação das comunidades pesqueiras artesanais do estuário da Lagoa dos Patos-RS." reponame:Repositório Institucional da FURG, 2009. http://repositorio.furg.br/handle/1/2220.

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Dissertação(mestrado)-Universidade Federal do Rio Grande, Programa de Pós-Graduação em Geografia, Instituto de Ciências Humanas e da Informação, 2009.<br>Submitted by Caroline Silva (krol_bilhar@hotmail.com) on 2012-06-26T14:01:55Z No. of bitstreams: 1 dissertacao bayer.pdf: 2478924 bytes, checksum: 33f205025a71c11cffe9f266603a9980 (MD5)<br>Rejected by Sabrina Andrade(sabrinabeatriz@ibest.com.br), reason: on 2012-07-03T21:53:04Z (GMT)<br>Submitted by Caroline Silva (krol_bilhar@hotmail.com) on 2012-07-03T22:27:29Z No. of bitstreams: 1 dissertacao bayer.pdf: 2478924 bytes, checksum: 33f205025a

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Bromilow, Amanda Marie. "Juvenile Blue Crab Survival in Nursery Habitats: Predator Identification and Predation Impacts in Chesapeake Bay." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1516639467.

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Predator populations can have significant impacts on prey recruitment success and prey population dynamics through consumption. Young, inexperienced prey are often most vulnerable to predation due to their small size and limited evasion capabilities. to reduce the risk of predation, new recruits and young juveniles typically settle in structured nursery habitats, such as seagrass beds, which promote higher survival by acting as refuges from predators. Thus, successful recruitment to the adult portion of the population is often dependent on the availability of suitable nursery habitat. In this

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Corrick, Corey Travis. "Spatial variation in fishery exploitation of mature female blue crabs (C. sapidus) in Chesapeake Bay." UNF Digital Commons, 2018. https://digitalcommons.unf.edu/etd/798.

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From 2008 to 2012, the total U.S. commercial landings of blue crabs (Callinectes sapidus Rathbun, 1896) averaged over 173 million lbs. Chesapeake Bay and its tributaries are important contributors to this fishery, providing greater than 30% of national commercial landings annually. In Chesapeake Bay, C. sapidus exhibits a complex life cycle in which mated females migrate to the saline waters of the Bay mouth to spawn. During migration, females can traverse multiple management jurisdictions, complicating effective management of this important fishery. Sustained declines in harvest have led to m

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Webster, Janet B. "Identification and characterization of a psychotrophic Clostridium sp. isolated from spoiled pasteurized crabmeat." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/43608.

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A number of crab processors in the Maryland and Virginia region experienced an abnormally high incidence of spoilage in their pasteurized product in the fall of 1989. The spoilage was only seen in cans that were processed either shortly before or after hurricane Hugo and the majority of spoilage occurred in machine picked meat only. All processors pasteurized the meat at least to an Fi~5 of 32 minutes, which is the minimum National Blue Crab Industry Association (NBCIA) recommendation. Spoiled pasteurized crabmeat, processed in 1989 and 1990, were analyzed for their microbial content. Sever

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Reardon, Kathleen M. "Development, Assessment, and Management of a Potential Directed Fishery for Jonah Crab, (Cancer borealis), in the Near Shore Gulf of Maine." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/ReardonKM2006.pdf.

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Santana, Givanildo Ximenes. "Comportamento predatÃrio do caranguejo Menippe nodifrons Stimpson, 1859 (Decapoda: Brachyura: Menippidae) sobre moluscos gastrÃpodes em laboratÃrio." Universidade Federal do CearÃ, 2005. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2894.

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Foi realizado experimento em laboratÃrio para observar a predaÃÃo do caranguejo mÃo-grossa Menippe nodifrons sobre trÃs espÃcies de moluscos gastrÃpodes: Stramonita haemastoma, Tegula viridula e Neritina virginea. Os aspectos observados foram de preferÃncia alimentar do caranguejo, tempo de manipulaÃÃo e manipulaÃÃo das presas, tamanho crÃtico da presa, e ainda, a anÃlise biomecÃnica das quelas dos caranguejos. Os caranguejos e os moluscos foram coletados na praia do Pacheco, localizada no municÃpio de Caucaia-Ce. Menippe nodifrons alimentou-se das trÃs espÃcies de gastrÃpodes, com uma maior p

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Chudnow, Rachel. "In search of effective management : case study of the British Columbia Dungeness crab (Cancer magister) fishery and lessons from domestic and international experience." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43842.

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Canadian fisheries such as the British Columbia Dungeness crab (Cancer magister) fishery face a number of complex economic, political, and ecological challenges. The situation has been compounded by the increased complexity of management frameworks and declining resources of the government body entrusted with the management of Canada’s fishery resources. This thesis looks for best practices to create effective management within Canadian fisheries through investigation of three key components of fisheries management: Maintaining an exploited stock’s biological sustainability; developing and mai

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Al-Rumaidh, Mohammed Juma. "The biology, population dynamics and fishery management of the blue swimming crab, Portunus pelagicus (Linnaeus, 1758), in Bahraini waters : (Crustacea: Decapoda: Brachyura: Portunidae)." Thesis, Bangor University, 2002. https://research.bangor.ac.uk/portal/en/theses/the-biology-population-dynamics-and-fishery-management-of-the-blue-swimming-crab-portunus-pelagicus-linnaeus-1758-in-bahraini-waters--crustacea-decapoda-brachyura-portunidae(4f5de844-0b5b-4b2e-85f9-5d7426fe57fc).html.

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Aspects of the biology of the swimming crab, Portunus pe/agicus (Linnaeus, 1758). were investigated from trawl catches from offshore fishing grounds in Bahraini waters (designated areas A [northern], B [north-eastern] and C [southern], a total area of 1636 km2 ) and inshore grounds (traps) around Bahrain over 14 months. P. pe/agicus were found over a considerable range of temperatures (16-35 °C) and salinities (39-57%0). The abdomen of female crabs shows a distinct change in shape at about 7 cms carapace width (CW), when the pubertal moult takes place. In male crabs the shape of the abdomen re

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Graham, Larissa Joy. "Bycatch associated with a horseshoe crab (Limulus polyphemus) trawl survey: identifying species composition and distribution." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/34660.

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Horseshoe crabs (Limulus polyphemus) have been harvested along the east coast of the United States since the 1800s, however a Fishery Management Plan (FMP) was only recently created for this species. To date, there have not been any studies that have attempted to identify or quantify bycatch in the horseshoe crab trawl fishery. A horseshoe crab trawl survey was started in 2001 to collect data on the relative abundance, distribution, and population demographics of horseshoe crabs along the Atlantic coast of the United States. In the present study, species composition data were collected at s

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Lampinen, Björn. "Protocol optimization of the filter exchange imaging (FEXI) sequence and implications on group sizes : a test-retest study." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-196327.

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Diffusion weighted imaging (DWI) is a branch within the field of magnetic resonance imaging (MRI) that relies on the diffusion of water molecules for its contrast. Its clinical applications include the early diagnosis of ischemic stroke and mapping of the nerve tracts of the brain. The recent development of filter exchange imaging (FEXI) and the introduction of the apparent exchange rate (AXR) present a new DWI based technique that uses the exchange of water between compartments as contrast. FEXI could offer new clinical possibilities in diagnosis, differentiation and treatment follow-up of co

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Combes, Jason Charles Hadley. "Aspects of the biology and fisheries ecology of the velvet swimming crab, Necora puber (L.), and the squat lobsters Munida rugosa (Fabricius) and M.sarsi Huss (Crustacea: Decapoda) in Scottish waters." Thesis, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248416.

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Rodella, Umberto. "A novel model of Miller Fisher syndrome to study motor axon terminal regeneration." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3422774.

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The neuromuscular junction (NMJ) is a ‘tripartite’ synapse, composed of the presynaptic motor axon terminal (MAT), the muscle fiber and perisynaptic Schwann cells (PSCs). NMJ functionality is essential for the execution of body movements and it is anatomically exposed, becoming an easy target of bacterial and animal neurotoxins, toxic chemicals, mechanical trauma, and autoimmune diseases. In the Miller Fisher Syndrome (MFS) autoantibodies against specific gangliosides (>90% GQ1b) bind to MAT and in turn activate the complement system cascade at its surface, leading to nerve degeneration. Such

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Mansour, Tony, and Majdi Murtaja. "Applied estimation theory on power cable as transmission line." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-46583.

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This thesis presents how to estimate the length of a power cable using the MaximumLikelihood Estimate (MLE) technique by using Matlab. The model of the power cableis evaluated in the time domain with additive white Gaussian noise. The statistics havebeen used to evaluate the performance of the estimator, by repeating the experiment fora large number of samples where the random additive noise is generated for each sample.The estimated sample variance is compared to the theoretical Cramer Raw lower Bound(CRLB) for unbiased estimators. At the end of thesis, numerical results are presentedthat sho

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Overton, Julia Lynne. "Morphometric, genetic and reproductive characteristics of mud crabs (genus Scylla de Haan, 1833) from Southeast Asia." Thesis, University of Stirling, 2000. http://hdl.handle.net/1893/2599.

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The edible mud crab, genus Scylla, is important to fisheries and aquaculture throughout the Indo Pacific region, but its taxonomic status has been confused for decades and a new classification has only recently been proposed. This project was undertaken to investigate the species status of mud crabs in Southeast Asia, with a view to deciding whether two sympatric morphs of Scylla found in Ban Don Bay, Surat Thani Province, Thailand, are two separate species. A further aim was to elucidate any possible pre-zygotic reproductive isolating mechanisms (RIMs) and ecological features that maintain th

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Crowley, Claire Elizabeth. "Aging of Florida Blue Crabs, Callinectes sapidus, Through the Biochemical Extraction of Lipofuscin." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4022.

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The blue crab, Callinectes sapidus, represents an ecologically and economically important component of marine and estuarine ecosystems. In Florida, blue crab landings accounted for $9.6 million dollars during the 2010 fishing season. Accurate stock assessments for this valuable fishery are essential. Age is a critical biological component of accurate stock assessments; however, blue crabs and other crustaceans are especially difficult to age because of the complex nature of discrete growth. Biochemical extraction of an aging pigment, lipofuscin, was developed using blue crab eyestalks. The

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Silva, Irane Gonçalves da. "Conhecimento etnobiológico dos pescadores de siris do estuário do rio Vaza-Barris, Sergipe, Brasil." Universidade Federal da Paraíba, 2009. http://tede.biblioteca.ufpb.br:8080/handle/tede/4120.

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Made available in DSpace on 2015-04-17T14:55:24Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 4629803 bytes, checksum: e67287877bd2e400b694eb0ed5adb520 (MD5) Previous issue date: 2009-07-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The fishery handmade in the estuary-mangrove complex is the main protein source and cost of many coastal communities, which acquired and accumulated knowledge over generations, the fruit esxperience. Studies about knowledge of the local people about nature and how natural resources are exploited are so important for the enhanceme

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Nascimento, Joana do. "Pêche récréative ou commerciale : quel impact sur les stocks d'étrilles (Necora puber) européens ? : une approche de génétique de la conservation." Thesis, La Rochelle, 2013. http://www.theses.fr/2013LAROS392/document.

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Dans le contexte actuel de changements environnementaux globaux, la croissance populationnelle et les besoins grandissants en termes de services écosystémiques en zone côtière occupent une place de plus en plus importante dans les problématiques de conservation. Le développement des pêcheries et la surexploitation qui en découle souvent, sont ainsi à l’origine d’un grand nombre d’effets délétères sur le plan écologique mais peuvent également conduire à une perte de diversité génétique associée à une diminution des capacités d’adaptation pour les espèces exploitées. Le programme transdisciplina

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Nance, David. "Settlement of the scallops Pecten maximus (L.) and Aequipecten opercularis (L.) and their predators : the starfish Asterias rubens L. and the crabs Necora puber (L.) and the Cancer pagurus L. on the west coast of Scotland." Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=124328.

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Martin, Jennifer Lynn. "The effect of cattle grazing on the abundance and distribution of selected macroinvertebrates in west Galveston Island salt marshes." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969/179.

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Pratte, Zoe A. "Investigating the Driving Mechanisms Behind Differences in Bleaching and Disease Susceptibility Between Two Scleractinian Corals, Pseudodiploria Strigosa and Diploria Labyrinthiformis." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2217.

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Disease and bleaching are two conditions which commonly lead to coral death. Among coral species, susceptibility to disease and bleaching is variable, and Pseudodiploria strigosa tends to be diseased more than Diploria labyrinthiformis, while D. labyrinthiformis bleaches more readily. The focus of this dissertation was to investigate and compare multiple components of these two coral species, and identify how they may relate to disease and bleaching resistance. Compenetnts examined included the surface mucopolysacharide layer (SML) thickness, gene expression, microbial associates, and a white

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Alloy, Matthew Michael. "Photo-induced Toxicity of Deepwater Horizon Spill Oil to Four Native Gulf of Mexico Species." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822778/.

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The 2010 Deepwater Horizon oil spill resulted in the accidental release of millions of barrels of crude oil into the Gulf of Mexico (GoM). Photo-induced toxicity following co-exposure to ultraviolet (UV) radiation is one mechanism by which polycyclic aromatic hydrocarbons (PAHs) from oil spills may exert toxicity. Blue crab (Callinectes sapidus) are an important commercial and ecological resource in the Gulf of Mexico and their largely transparent larvae may make them sensitive to PAH photo-induced toxicity. Mahi-mahi (Coryphaena hippurus), an important fishery resource, have positively buoyan

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Milley, Noel C. "An examination of the factors affecting the sustainability of the Newfoundland & Labrador snow crab fishery /." 2005.

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Power, Nicole Gerarda. "Women, processing industries and the environment : a sociological analysis of women fish and crab processing workers' local ecological knowledge /." 1997.

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