Academic literature on the topic 'Ribbon fishes'
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Journal articles on the topic "Ribbon fishes"
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V, Mary Kensa, and Anju M. "Screening of osmotolerant micro organisms in the dried salted fish sold in kanyakumari district, tamilnadu." Kongunadu Research Journal 7, no. 1 (April 15, 2020): 39–49. http://dx.doi.org/10.26524/krj.2020.7.
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Fish is one of the most important sources of animal protein available in the tropics and has been widely accepted as a good source of protein and other elements for the maintenance of healthy body. Salting and drying is an ancient and simple method to preserve fish and in India about 17% of the total catch is beingused for salting and drying. The present investigation was aimed to analyse the presence of osmotolerant microbes in the dry fishes. The commercially important marine edible salted dry fishes were collected from the study area Pallam. Four common edible dry fishes like (Nethili, Sardines, Ribbon fish and Prawn) wereselected for the screening of microbial population. The highest TFC value was reported in Sardine and Ribbon fish (5103) than the other fishes like Netthili and Prawn (4103 and 2103). The moisture content was higher (45%) in Prawn followed by Ribbon fish (40%), Sardines (29%), Netthili (26%). In this study,Prawn had high moisture content (45%) and high microbial load (5.3104 cfu/g). Total five fungal species were isolated from the selected dried fishes. The result of isolation of human pathogens such as Salmonella and Vibrio identified from the selected dry fish samples. The nutritive value of raw fish in found to be good.The sensory characteristics such as colour, odor, texture, insect infestation showed that the Sardine and Prawn was good in quality, while the netthili had decreased the quality. The study showed that salted and sundried fishes sold in study area are contaminated with pathogenic bacteria and fungal agents. Spoilage ofdried fish products was found and this might be due to unhygienic handling of the fisher folks, improper processing and unhygienic vendors and vending areas.
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Phillipps, W. J. "24. Agrostichthys, a new genus of Ribbon Fishes." Proceedings of the Zoological Society of London 94, no. 2 (August 21, 2009): 539–40. http://dx.doi.org/10.1111/j.1096-3642.1924.tb01514.x.
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Jamil, MGM, MN Hossain, MM Mia, MA Mansur, and S. Uga. "Studies on the Proximate Composition, Quality and Heavy Metal Concentration of Sun-dried Bombay Duck and Sun-dried Ribbon Fish of Cox’s Bazar District of Bangladesh." Journal of Environmental Science and Natural Resources 10, no. 1 (November 28, 2017): 55–60. http://dx.doi.org/10.3329/jesnr.v10i1.34694.
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Proximate composition, quality aspect and heavy metal concentration of sun-dried Bombay Duck (Harpodon nehereus) and sun-dried Ribbon fish (Trichiurus haumela) were studied in a series of laboratory experiments. Sun-dried fishes were collected from a fish market of Cox‟s Bazar town. These sun-dried marine fishes were collected from the stock after first drying procedure. Organoleptically most of these sun-dried fishes were in „B‟ grade that means in „Good‟ condition (SDP 2.33 and 2.35 respectively). Crude Protein, Lipid, Moisture, Ash, TVB-N and TMA-N content (%) of sun-dried Bombay Duck (Harpodon nehereus) was 32.21±1.05 %, 3.51±0.38 %, 37.26±0.70 %, 16.22±0.56 %, 115.45±1.73 mg/100g, 9.37±0.13 mg/100g respectively. Whereas in sun-dried Ribbon fish (Trichiurus haumela) the content (%) of Crude Protein, Lipid, Moisture, Ash, TVB-N and TMA-N was 31.64±1.28 %, 5.06±0.10 %, 35.78±0.97 %, 12.33±0.27 %, 107.69±1.37 mg/100g and 9.91±0.23 mg/100g respectively. Heavy metal concentration i.e. Cd, Cr, Pb, Cu and Zn concentration (ppm) in sun-dried Bombay Duck (Harpodon nehereus) was 0.82, 8.38, 8.28, 2.21, 55.38 ppm. Whereas heavy metal concentration (ppm) in sun-dried Ribbon fish (Trichiurus haumela) was Cd 0.48 ppm, Cr 6.96 ppm, Pb 5.46 ppm, Cu 1.40 ppm, Zn 19.95 ppm.J. Environ. Sci. & Natural Resources, 10(1): 55-60 2017
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Gentil, Eduardo, Adriano Prysthon, Carolyne Ribeiro Gomes Dias, Fernando Borges Silva, and Manoel Xavier Pedroza Filho. "Artificial attractors in small scale fisheries gillnets on Araguaia river, Brazil." Research, Society and Development 9, no. 8 (August 2, 2020): e913986364. http://dx.doi.org/10.33448/rsd-v9i8.6364.
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The catch and selectivity effectiveness of two artificial attractors-AA (bright gray curly ribbon and green lightsticks) in gillnets was evaluated in order to increase the productivity and income of small scale fishermen. Five expeditions were carried on the Araguaia River, where the two AA treatments were applied to two thirds of the area of gillnets, leaving the remaining third without the use of attractors (control). For a better comparison, the catches were subdivided into ecological groups (carnivores, detritivores, herbivores and omnivores). 541 fish were caught, 197 in the curly ribbon, 177 lightstick and 167 in the control. Carnivorous fishes were predominant in all treatments (p = 0.025 for Kruskal Wallis test and p = 0.03 for Mann-Whitney test). The use of the ribbon and lighstick provided an increase in the catch of carnivorous teleost fish, providing a better gross profit margin. Due the low incomes and fragile economic situation of the fishing communities of Araguaia, the best technological choice in this study is the curly ribbon, as in addition to presenting better productivity, it is accessible low cost and easy to handle.
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Saha, Sristy, Sawda Jaman, Hafisha Khatun Anee, Ashfaqul Muid Khandaker, Mohammad Shamimul Alam, and Rowshan Ara Begum. "Molecular Identification of Ribbon Fish (Eupleurogrammus Sp.) Using Partial Sequence of Mitochondrial COI Gene." Bangladesh Journal of Zoology 50, no. 2 (November 20, 2022): 231–38. http://dx.doi.org/10.3329/bjz.v50i2.62055.
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Dry fish is considered as a delicacy in the menu of many people of Bangladesh. The most economically important marine and freshwater dried fishes are ribbon fish, bombay duck, olive barb, pomfret, shrimp, etc. In this study, fresh ribbon fish sample was collected from Cox's Bazar and morphologically identified as ribbon fish. The collected fish was confirmed through a molecular technique using mitochondrial COI gene (cytochrome c oxidase subunit I) to avoid morphological ambiguity, which is first reported data from Bangladesh. Partial sequence of this COI gene was amplified using a genus specific universal primer set. The target nucleotide sequence of COI gene was determined successfully with 616 bp length and the ribbon fish was identified as Eupleurogrammus sp. Within the amplified region GC and AT content were 45.5% and 54.5%, respectively. 16.88% interspecific polymorphism was observed when compared with other species under genus Eupleurogrammus collected from Gen Bank database. This sequence will be used as molecular bar code for authentic identification of Eupleurogrammus sp. at genus level. Bangladesh J. Zool. 50 (2): 231-238, 2022
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Lekshmi, P. S. Swathi, R. Narayanakumar, and Shyam S. Salim. "Market Efficiency Indicators in Marine Fish Marketing in Goa, India." Journal of Agricultural Science 12, no. 7 (June 15, 2020): 112. http://dx.doi.org/10.5539/jas.v12n7p112.
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The Indian State of Goa has a coastal length of 104 Kms and the State contributes 1.85% to the marine fish production of the country. A study was conducted to assess the market efficiency indicators such as Gross Marketing Margin, Percentage Share of Fisherman in the Consumers Rupee (PSFCR) and the Coefficient of variation. The study revealed that high value fishes such as cobia, silver Whiting, seer fishes, prawns and milk shark recorded a comparatively higher price spread. Varieties which recorded higher PSFCR were speckled prawn (72.86%), cobia (70.31%), seerfish (69.98%), Brown shrimps or ginga prawns (69.43%), pony fish (67.58%) and milk shark (65.61%). At the point of first sales, high value fishes such as cobia, seerfishes, prawns and silver biddy had a co-efficient of variation of less than 10% indicating a higher price stability. High value fishes such as ribbon fishes, seerfishes, cobia, indian white prawn, barracudas, brown prawns, speckled prawns, kadal shrimps and half beaks were among the list of fishes which recorded a low co-efficient of variation of less than 10% at the point of last sales.
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Ahsan, MK, SK Ghosh, NS Runa, MM Hasan, and M. Kamal. "Marketing channel and value chain analysis of Bombay duck and ribbon fish in Coxs Bazar area of Bangladesh." Progressive Agriculture 27, no. 2 (August 17, 2016): 222–27. http://dx.doi.org/10.3329/pa.v27i2.29334.
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A study was conducted to investigate marketing channel and value chain of two commercially important marine fish species in Coxs Bazar area, Bangladesh, namely, Bombay duck Harpodon nehereus and Ribbon fish, Trichiurus haumela. Three types of markets were found in the study namely primary, secondary and retail markets. The number of sample fishermen and intermediaries were 120. About 4 to 5 intermediaries were found to be involved in the each marketing chain and this group is believed to make huge profit, thus the prices of fishes were very high in the final consumer market. Marketing margin for fresh Bombay duck and ribbon fish were 29% and 28% and dried Bombay duck and dried ribbon fish were 35% and 19% of consumer purchase price, respectively. Poor transport facilities and huge number of intermediaries in the marketing channels were the main problems of marine fish marketing channel. Government intervention in the marketing channel is necessary for sustainable fish marketing systems.Progressive Agriculture 27 (2): 222-227, 2016
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Baker, Clare V. H., and Melinda S. Modrell. "Insights into Electroreceptor Development and Evolution from Molecular Comparisons with Hair Cells." Integrative and Comparative Biology 58, no. 2 (June 11, 2018): 329–40. http://dx.doi.org/10.1093/icb/icy037.
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Abstract The vertebrate lateral line system comprises a mechanosensory division, with neuromasts containing hair cells that detect local water movement (“distant touch”); and an electrosensory division, with electrosensory organs that detect the weak, low-frequency electric fields surrounding other animals in water (primarily used for hunting). The entire lateral line system was lost in the amniote lineage with the transition to fully terrestrial life; the electrosensory division was lost independently in several lineages, including the ancestors of frogs and of teleost fishes. (Electroreception with different characteristics subsequently evolved independently within two teleost lineages.) Recent gene expression studies in a non-teleost actinopterygian fish suggest that electroreceptor ribbon synapses employ the same transmission mechanisms as hair cell ribbon synapses, and show that developing electrosensory organs express transcription factors essential for hair cell development, including Atoh1 and Pou4f3. Previous hypotheses for electroreceptor evolution suggest either that electroreceptors and hair cells evolved independently in the vertebrate ancestor from a common ciliated secondary cell, or that electroreceptors evolved from hair cells. The close developmental and putative physiological similarities implied by the gene expression data support the latter hypothesis, i.e., that electroreceptors evolved in the vertebrate ancestor as a “sister cell-type” to lateral line hair cells.
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Sanjee, Sohana Al, and Md Ekramul Karim. "Microbiological Quality Assessment of Frozen Fish and Fish Processing Materials from Bangladesh." International Journal of Food Science 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/8605689.
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The present study aims at the microbiological analysis of export oriented frozen fishes, namely, Jew fish, Tongue Sole fish, Cuttle fish, Ribbon fish, Queen fish, and fish processing water and ice from a view of public health safety and international trade. Microbiological analysis includes the determination of total viable aerobic count by standard plate count method and enumeration of total coliforms and fecal coliforms by most probable number method. The presence of specific fish pathogens such asSalmonellaspp. andVibrio choleraewere also investigated. The TVAC of all the samples was estimated below5×105 cfu/g whereas the total coliforms and fecal coliforms count were found below 100 MPN/g and 10 MPN/g, respectively, which meet the acceptable limit specified by International Commission of Microbiological Specification for Food. The microbiological analysis of water and ice also complies with the specifications havingTVAC<20 cfu/mL, and total coliforms and fecal coliforms count were below the limit detection of the MPN method. Specific fish pathogens such asSalmonellasp. andV. choleraewere found absent in all the samples under the investigation. From this study, it can be concluded that the investigated frozen fishes were eligible for export purpose and also safe for human consumption.
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Nguyen, Yen, Mai Nguyen, Quang Vu, Thanh Pham, Victor Koledov, Alexander Kamantsev, Alexey Mashirov, et al. "Investigation of magnetic phase transition and magnetocaloric effect of (Ni,Co)-Mn-Al melt-spun ribbons." EPJ Web of Conferences 185 (2018): 05001. http://dx.doi.org/10.1051/epjconf/201818505001.
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Magnetic phase transition, magnetocaloric effect and critical parameters of Ni50-xCoxMn50-yAly (x = 5 and 10; y = 17, 18 and 19) rapidly quenched ribbons have been studied. X-ray diffraction patterns exhibit a coexistence of the L21 and 10M crystalline phases of the ribbons. Magnetization measurements show that all the samples behave as soft magnetic materials with a low coercive force less than 60 Oe. The shape of thermomagnetization curves considerably depends on Co and Al concentrations. The Curie temperature (TC) of the alloy ribbons strongly increases with increasing the Co concentration and slightly decreases with increasing the Al concentration. The Ni45Co5Mn31Al19 and Ni40Co10Mn33Al17 ribbons reveal both the positive and negative magnetocaloric effects. Under magnetic field change (ΔGH) of 13.5 kOe, the maximum magnetic entropy change (|ΔSm|max) of the Ni45Co5Mn31Al19 ribbon is about 2 and -1 J·kg−1·K−1 for negative and positive magnetocaloric effects, respectively. Basing on Arrott - Noakes and Kouvel - Fisher methods, critical parameters of the Ni45Co5Mn31Al19 ribbon were determined to be TC ≈ 290 K, β ≈ 0.58, γ ≈ 0.92 and δ ≈ 2.59. The obtained values of the critical exponents indicate that the magnetic order of the alloy ribbon is close to the mean-field model.
Dissertations / Theses on the topic "Ribbon fishes"
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Davies, John M. "The impact of cormorants (Phalacrocorax carbo L.) on the lower River Ribble fishery, Lancashire." Thesis, Liverpool John Moores University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361521.
Full textBooks on the topic "Ribbon fishes"
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Maryland. Governor's Blue Ribbon Citizens Pfiesteria Action Commission. Report of the Governor's Blue Ribbon Citizens Pfiesteria Action Commission. [Annapolis, Md.]: The Commission, 1997.
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Fischbach, Dirk. The fly fisher's Huron: A practical guide to Michigan's blue-ribbon smallmouth river. Saline, MI: Fischbach Pub., 2001.
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Weidenfeld, Werner, and Wolfgang Wessels, eds. Jahrbuch der Europäischen Integration 2021. Nomos Verlagsgesellschaft mbH & Co. KG, 2021. http://dx.doi.org/10.5771/9783748912668.
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The yearbook on European integration, compiled by the Institute of European Politics in Berlin, has documented the process of European integration in an up-to-date and detailed way since 1980. The result is a unique record of contemporary European history over a 41 year period. The 2021 edition of the yearbook continues this tradition. In approximately 100 contributions related to their main research subjects, the book’s authors portray the events of European politics in the period 2020–21 and inform the reader about the work of European institutions, the development of the EU’s policy areas, Europe’s role in the world and European policy in the EU’s member states and candidate countries. With contributions by Petra Ahrens · Constanze Aka · Aljoscha Albrecht · Franco Algieri · Franz-Lothar Altmann · Katrin Auel · Heinz-Jürgen Axt · Julia Bachtrögler-Unger · Michael L. Bauer · Peter Becker · Matthias Belafi · Annegret Bendiek · Julian Bergmann · Sarah-Lena Böning · Katrin Böttger · Klaus Brummer · Birgit Bujard · Karlis Bukovskis · Hrvoje Butković · Thomas Christiansen · Agnieszka K. Cianciara · Anthony Costello · Alexandru Damian · Franziska Decker · Johanna Deimel · Doris Dialer · Thomas Diez · Roland Döhrn · Hans-Wilhelm Dünn · Tobias Etzold · Alina Felder · Eva Feldmann-Wojtachnia · Sabine Fischer · Tobias Flessenkemper · Christian Franck · Carsten Gerards · Gabriel Glöckler · Daniel Göler · Alexander Grasse · Anna Gussarova · Christoph Gusy · Björn Hacker · Simon Hartmann · Niklas Helwig · Andreas Hofmann · Bernd Hüttemann · Tuomas Iso-Markku · Klaus Jacob · Michael Kaeding · Niels Keijzer · Mariam Khotenashvili · Anna-Lena Kirch · Henning Klodt · Wim Kösters · Valentin Kreilinger · Tobias Kunstein · Jan Labitzke · Guido Lessing · Barbara Lippert · Christian Lippert · Marko Lovec · Siegfried Magiera · Remi Maier-Rigaud · Jean-Marie Majerus · Andreas Marchetti · Daniel Martínek · Dominic Maugeais · Andreas Maurer · Vittoria Meißner · Laia Mestres · Jürgen Mittag · Lucia Mokrá · Jan-Peter Möhle · Manuel Müller · Matthias Niedobitek · Thomas Petersen · Anne Pintz · Julian Plottka · Johannes Pollak · António Raimundo · Christian Raphael · Iris Rehklau · Florence Reiter · Darius Ribbe · Daniel Schade · Sebastian Schäffer · Joachim Schild · Ulrich Schlie · Otto Schmuck · Lucas Schramm · Tobias Schumacher · Oliver Schwarz · Martin Selmayr · Otto W. Singer · Eduard Soler i Lecha · Martin Stein · Burkard Steppacher · Tamás Szigetvári · Funda Tekin · Gabriel N. Toggenburg · Hans-Jörg Trenz · Jürgen Turek · Günther Unser · Mendeltje van Keulen · Nicolai von Ondarza · Thomas Walli · Volker Weichsel · Werner Weidenfeld · Michael Weigl · Wolfgang Weiß · Charlotte Wenner · Wolfgang Wessels · Moritz Wiesenthal · Sabine Willenberg · Laura Worsch · Wolfgang Zellner
Book chapters on the topic "Ribbon fishes"
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"Multispecies and Watershed Approaches to Freshwater Fish Conservation." In Multispecies and Watershed Approaches to Freshwater Fish Conservation, edited by Paul D. Thompson and Paul C. Burnett. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874578.ch24.
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<em>Abstract</em>—The Weber River is primarily known as a blue-ribbon Brown Trout <em>Salmo trutta </em>fishery; however, this river also supports populations of two jeopardized fishes, Bonneville Cutthroat Trout <em>Oncorhynchus clarkii utah </em>and Bluehead Sucker <em>Catostomus discobolus</em>. At least one population of Bonneville Cutthroat Trout in the Weber River provides an important and popular local fishery and expresses a fluvial life history where main-stem individuals grow large (300–500 mm total length) and migrate into small tributaries for spawning. Bluehead Suckers currently occur in the main stem of the Weber River, where they travel distances of 20 km between spawning and overwintering habitats. The habitat for both species has been fragmented by more than 300 barriers composed of irrigation diversions, road crossings, and utility stream crossings. Beginning in 2010, the Utah Division of Wildlife Resources and Trout Unlimited began undertaking barrier removal for native fish as a priority conservation action. Initially, the effort to reconnect habitat was slow and the lack of relationships with stakeholders such as water users, government agencies, private landowners, and utility companies was hampering progress with habitat reconnection. New barriers were being built at a faster rate than barriers were being removed. To build these relationships, a steering committee was formed to secure a small grant, hire a consulting firm, organize stakeholder meetings to identify broad stakeholder priorities, and write a watershed plan that ultimately identified Bonneville Cutthroat Trout and Bluehead Sucker as priority conservation targets. The watershed plan and subsequent stakeholder meetings developed a framework for the Weber River Partnership. The partnership holds an annual symposium where larger watershed issues are discussed. The symposium also provides a platform where all stakeholders can understand the activities occurring throughout the watershed and where there are opportunities to collaborate. The Weber River Partnership has provided a forum where fisheries managers have told the story of Bonneville Cutthroat Trout and Bluehead Sucker and the importance of habitat connectivity. Through collaborative relationships with nontraditional partners, the relevance of fisheries in the Weber River has been realized. Further relevance in the watershed is evidenced by the development of a wide range of on-the-ground actions. Fish passage has been re-established at three main-stem and four tributary barriers. Additional projects are in various stages of development, including a large fish ladder that will be built as part of a Federal Energy Regulatory Commission relicensing project at a small hydroelectric dam, and we continue to be contacted by water users with interest in developing irrigation diversion reconstruction projects that incorporate fish passage.
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"Benthic Habitats and the Effects of Fishing." In Benthic Habitats and the Effects of Fishing, edited by MELANIE BERGMANN, HILMAR HINZ, ROBERT E. BLYTH, MICHAEL J. KAISER, STUART I. ROGERS, and MIKE J. ARMSTRONG. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569605.ch45.
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<strong><em>Abstract. </em><strong>Fishers have often complained that standard United Kingdom groundfish survey data do not adequately reflect the grounds targeted by commercial fishers, and hence, scientists tend to make overcautious estimates of fish abundance. Such criticisms are of particular importance if we are to make a creditable attempt to classify potential essential fish habitat (EFH) using existing data from groundfish surveys. Nevertheless, these data sets provide a powerful tool to examine temporal abundance of fish on a large spatial scale. Here, we report a questionnaire-type survey of fishers (2001–2002) that invited them to plot the location of grounds of key importance in the Irish Sea and to comment on key habitat features that might constitute EFH for Atlantic cod <em>Gadus morhua</em>, haddock <em>Melanogrammus aeglefinus</em>, and European whiting <em>Merlangius merlangus</em>. Plotted grounds were cross-checked using records of vessel sightings by fishery protection aircraft (1985–1999). A comparison of the areas of seabed highlighted by fishers and the observations made on groundfish surveys were broadly compatible for all three species of gadoids examined. Both methods indicated important grounds for cod and European whiting off northern Wales, the Ribble estuary, Solway Firth, north of Dublin, and Belfast Lough. The majority of vessel sightings by aircraft did not match the areas plotted by fishers. However, fishing restrictions, adverse weather conditions, and seasonal variation of fish stocks may have forced fishers to operate outside their favored areas on the (few) occasions that they had been recorded by aircraft. Fishers provided biological observations that were consistent among several independent sources (e.g., the occurrence of haddock over brittle star [ophiuroid] beds). We conclude that fishers’ knowledge is a useful supplement to existing data sets that can better focus more detailed EFH studies.
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Amar Shaikh, Malika. "There Once Was A Mouse." In The Silence That Speaks, 330—C37.P75. Oxford University PressDelhi, 2022. http://dx.doi.org/10.1093/oso/9780190132613.003.0038.
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Abstract Though the mouse was little, it caused a lot of mischief in Raju’s house. Despite all the grumbling and complaining, the people in the house gradually got used to the mouse’s presence. Raju’s father began to leave grains of rice and scraps of fish from his plate near the mouse hole. One day, the mouse found a piece of ribbon and he quickly dragged it into his house. Until now he had never ventured beyond this house, had never felt the need to, but suddenly he felt he should take the ribbon and explore the world. His desire to get out of the house leads him to into trouble. Malika Amar Shaikh’s interesting story, "There Once Was a Mouse" demonstrates the complexity of relationships between humans and animals. It is also a story of love and desire.
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Abulafia, David. "Conclusion: Crossing the Sea." In The Great Sea. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780195323344.003.0050.
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It is tempting to try to reduce the history of the Mediterranean to a few common features, to attempt to define a ‘Mediterranean identity’ or to insist that certain physical features of the region have moulded human experience there (as Braudel strongly argued). Yet this search for a fundamental unity starts from a misunderstanding of what the Mediterranean has meant for the peoples who have inhabited its shores and islands, or have crossed its surface. Rather than searching for unity, we should note diversity. At the human level, this ethnic, linguistic, religious and political diversity was constantly subject to external influences from across the sea, and therefore in a constant state of flux. From the earliest chapters of this book, where the first settlers in Sicily were described, to the ribbon developments along the Spanish costas, the edges of the Mediterranean Sea have provided meeting-points for peoples of the most varied backgrounds who have exploited its resources and learned, in some cases, to make a living from transferring its products from better-endowed to ill-endowed regions. From within its waters came fish and salt, two ingredients of the much-traded garum sauce of ancient Rome, and the basis for the early prosperity of one of the greatest of Mediterranean cities, Venice. As predicted in the preface, fishermen have not featured prominently in this book, in part because the evidence they have left behind is often very slight, but in part too because fishermen seek what is by definition under the surface of the sea and are less likely to make contact with communities on the opposing shores of the Mediterranean. The great exceptions are within the narrows near Malta, where the Genoese established a colony at Tabarka on the coast of Tunisia between 1540 and 1742 specializing in coral-fishing, and where Tunisian fishermen have now joined Sicilian fleets in the matanza, the great seasonal slaughter of tuna. Even more than fish, which keeps well only after salting or drying, grain has long been the major product carried across the sea, originally grown around its shores or brought down from the Black Sea, but, by the seventeenth century, increasingly of north European origin.
Conference papers on the topic "Ribbon fishes"
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Rios, Oscar, Ardavan Amini, and Hidenori Murakami. "Modeling and Experimentation of a Ribbed Caudal Fin for Aquatic Robots." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71235.
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Presented in this study is a mathematical model and preliminary experimental results of a ribbed caudal fin to be used in an aquatic robot. The ribbed caudal fin is comprised of two thin beams separated by ribbed sectionals as it tapers towards the fin. By oscillating the ribbed caudal fin, the aquatic robot can achieve forward propulsion and maneuver around its environment. The fully enclosed system allows for the aquatic robot to have very little effect on marine life and fully blend into its respective environment. Because of these advantages, there are many applications including surveillance, sensing, and detection. Because the caudal fin actuator has very thin side walls, Kirchhoff-Love’s large deformation beam theory is applicable for the large deformation of the fish-fin actuator. In the model, it is critical to accurately model the curvature of beams. To this end, C1 beam elements for thin beams are developed by specializing the shear-deformable beam elements, developed by the authors, based upon Reissner’s shear-deformable nonlinear beam model. Furthermore, preliminary experiments on the ribbed fin are presented to supplement the FE model.