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Dissertations / Theses on the topic 'Horse mackerel'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Portilla, Enrique. "Improving egg production estimates for mackerel and horse mackerel using multi-stages eggs." Thesis, University of Strathclyde, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425954.

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2

Bowker, Jenna. "Parasites of Kunene horse mackerel Trachurus trecae (Smith-Vaniz, 1986) with a comparison of parasites of Cape horse mackerel T. capensis (Castelnau, 1861) in the northern Benguela." Bachelor's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/7629.

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Two species of horse mackerel (Trachurus trecae and Trachurus capensis) reside in the northern Benguela ecosystem. Both are important economic commodities for the Angolan and Namibian fisheries and therefore need to be managed appropriately. Although the two species of horse mackerel share similar morphological characteristics and co-occur in Namibian waters in the northern Benguela, few studies have compared their parasite assemblages. To date there are no studies regarding the parasite profile of T. trecae. This study is the first to identify and document the parasite assemblage of T. trecae

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3

Naish, Kerry-Ann. "The stock identification of the Cape horse mackerel, Trachurus trachurus capensis (Pisces: Carangidae)." Thesis, Rhodes University, 1990. http://hdl.handle.net/10962/d1005165.

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Three stocks of the Cape horse mackerel, Trachurus trachurus capensis, have been recognised in the ICSEAF convention region off southern Africa (Figure 1) on the basis of catch distribution and biological analyses. They were identified as being off Namibia (ICSEAF Divisions 1 . 3 and 1.4), off the West Coast of South Africa (Div. 1.6) and off the South Coast (Div. 2.1 and 2.2). Recently, speculation as to the accuracy of the classification of the South African populations has arisen. The aim of this study was to determine the number of stocks In Divisions 1.6, 2.1 and 2.2, using methodology wh

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4

Borges, Maria de Fatima. "The population biology of horse mackerel (Trachurus trachurus L.) in the North-East Atlantic." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338366.

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This study investigates the population biology of horse mackerel inhabiting the Northeast Atlantic, their spawning grounds and migrations, and the degree of stock separation, with emphasis on the Southern and Western areas of the European shelf. The investigations involved the use of a wide range of methodologies and techniques, including age determination techniques, tagging experiments, the analysis and evaluation of commercial catch data, egg survey data, bottom trawl survey data, biochemical methods, morphometric methods, survey sampling methodology, and associated statistical analysis. Mu

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5

Mapukata, Tembela. "Laboratory studies on the feeding behaviour of juvenile Cape horse mackerel, Trachurus trachurus capensis." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/6968.

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Bibliography: leaves 78-90.<br>Laboratory studies were conducted on juvenile horse mackerel to examine feeding selectivity and rates of zooplankton consumption of two size classes of fish. Fish were fed a variety of natural zooplankton assemblages and sequential subsampling of water in the experimental tanks provided estimates of prey concentration. Video observations were used to examine feeding behaviour and to investigate the feeding response of horse mackerel to various food types and prey sizes.

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6

Le, Roux Jessica Louise. "Parasite assemblages of Cape horse mackerel (Trachurus capensis Castelnau, 1861) from the northern and southern Benguela." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/6673.

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A survey of parasites infecting Cape horse mackerel, Trachurus capensis Castelnau, 1861, from both the southern and northern Benguela ecosystems was conducted to test the hypothesis of discrete stocks in each subsystem. One hundred and twenty five T. capensis of two size classes were collected off the coasts of South Africa and Namibia and their bodies and organs were examined for parasitic infections. Differences in parasite assemblages between smaller and larger T. capensis within each subsystem, between T. capensis of each size class from the two subsystems, and between larger fish collecte

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7

Campbell, Neil. "Population studies of horse mackerel (Trachurus trachurus (L.)) and herring (Clupea harengus L.) using parasites as biological tags." Thesis, University of Aberdeen, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446199.

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Recently, questions have been raised as to the appropriateness of stock boundaries in the Atlantic horse mackerel (<i>Trachurus trachurus</i>) and the herring (<i>Clupea harengus)</i> in European waters. To this end, 1919 horse mackerel were examined for parasitic infections from samples taken at nineteen sites around Europe. Forty-five species of parasites were recorded, eleven of which are new host records, and one may be a new species. A number of these are suitable for use as biological tags. Results showed a significant degree of separation between fish from the North Sea and Western stoc

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8

Reed, Jodie Romay. "Bycatch in the South African midwater trawl fishery for horse mackerel (Trachurus capensis) as established from observer records." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/19999.

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The South African midwater trawl fishery targets adult horse mackerel (Trachurus capensis) on the Agulhas Bank. The bulk of the catch is taken by a single midwater trawler. The bycatch of this fishery is investigated by analysing observer records from 2004 to 2014 to report on bycatch composition, volumes and temporal and spatial patterns. Small fauna were analysed by extrapolation of sample weights and large fauna were counted. The midwater trawl fishery was estimated to have caught 25 415 t annually, with a bycatch rate of 6.9% of the total catch, by weight. Bycatch species with the highest

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9

Mc, Laverty Kathryn J. "A re-evaluation of the life history strategy of Cape horse mackerel, Trachurus capensis in the southern Benguela." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/12101.

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Includes abstract.<br>Includes bibliographical references.<br>The life history strategy of the Cape horse mackerel, Trachurus capensis in the southern Benguela, relating to distribution and reproductive ecology, was re-evaluated. It is possible that certain aspects of the species' life history may have changed since the previous assessment by Barange et al. (1998), as a result in this study, the conceptual hypotheses about the life history of horse mackerel proposed by Barange et al. (1998) were re-evaluated and possible revisions proposed. Distribution patterns were analysed using acoustic an

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10

Furman, Liam Brent. "Using Management Strategy Evaluation to address problems arising as a result of competing users of the South African horse mackerel resource." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/12863.

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Includes bibliographical references.<br>The Cape horse mackerel (Trachurus trachurus capensis) has traditionally made an important contribution to the South African fishing industry and is a key component of the Benguela ecosystem. This thesis concerns the assessment and management of the South African horse mackerel resource. It starts with a brief review of the biology of the Cape horse mackerel and the history of the fishery, as well as of the Management Strategy Evaluation approach, which was applied in this work. Assessments of the horse mackerel resource are currently undertaken through

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11

Duarte, Agostinho Domingos Caholo. "Distribution and mixture of Cape and Cunene horse mackerel, Tachurus capensis and Tracherus trecae in the Angola-Benguela front in relation to environmental and other factors." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/6253.

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Bibliography: leaves 128-133.<br>This thesis makses an analysis of survey data of horse mackerel catch per unit effort and acoustics data from R/V Dr. Fridtjof Nansen over twelve years in the region of the Angola-Benguela front. The main objectives are: to characterize the pattern of distribution and mixture of Cunene and Cape horse mackerel in the area around the Angola-Benguela front and to study the relationships between the distribution of T. capensis and T. trecae and the movements of the Angola-Benguela front. The role of sea surface temperature (SST) was also examined, assuming that thi

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12

Wu, Ming Zhong, and 吳明忠. "Target strength analyses on alive common mackerel (scomber japonicus) and atlantic horse mackerel (trachurus japonicus) of individuals." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/46009806192131196100.

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13

Chia-Chi, Li, and 李佳琪. "The Impacts of Trade Liberalization on the Tariff and Tariff-quota for Mackerel and Horse Mackerel Fisheries in Taiwan." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/91113871655842165766.

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14

Tseng, Chen-Te, and 曾振德. "Studies on Surface Dynamics and Relationship to the Mackerel and Horse Mackerel Fishing Ground off Northeastern Taiwan by NOAA- AVHRR Imageries." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/30928065550571419236.

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碩士<br>國立海洋大學<br>漁業學系<br>81<br>According to the 141 available imageries, the patterns of Kuroshio fronts are generalized to three types: A, B and C. The locations of cold eddies are also generalized to three types related to Kuroshio fronts: A(alone), B(west side of fronts) and C(east side of fronts). In addition, this study also applied the maximum cross correlation (MCC) method to deduce sea surface current vector by continuous two satellite imageries. And it is found that th

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15

Yeh, Zheng Lin, and 葉政霖. "Identification and Antihypertensive Effct of Peptide Derived from Horse Mackerel (Decapterus macarellus) Hydrolysate." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/70290164968114995670.

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碩士<br>國立海洋大學<br>食品科學系<br>90<br>Mackerel scad (Decapterus macarellus) was caught in Taiwan. After cooking and homogenizing, the muscle protein was hydrolyzed by commercial proteases (Prozyme 6, Protease N, and Flavorzyme). Enzymatic hydrolysis was done at 50°C for 2 and 5 hours, respectively. The effect of hydrolysate on inhibitory activity against angiotensin I converting enzyme (ACE) and antihypertensive effect were investigated. The molecular weight of different hydrolysate was all below 1,500 Da. The maximal soluble protein content was obtained when mackerel scad muscle protein was hydrolyz

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16

Liu, Zhi-Ting, and 劉致廷. "Studies on the Quality Changes of Semi-Dried Horse Mackerel during Storage at 5℃." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/44907794560963235522.

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碩士<br>國立臺灣海洋大學<br>食品科學系<br>100<br>Horse mackerel (Trachurus japonicus) is one of the important coastal fish in Taiwan. Now, the semi-dried horse mackerel product must be stored by frozen and have high cost. This research wanted to improve its storage condition. The horse mackerel fillets were treating with 10% saline solution, 3% citric acid solution (pH 2) and its mixture (pH 2) for 10 min, then packaging with PE bag, plastic film and vacuum bag, respectively, and stored at 5oC refrigeration. The pH, total plate count (TPC), E. coli, coliform, volatile basic nitrogen (VBN), thiobarbituric aci

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17

ZHANG, XIAO-REN, and 張孝仁. "Studies on the properties of horse mackerel beneath the luring light by applying the echosounder." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/40469096844897544608.

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18

Lin, Chun-Chia, and 林俊嘉. "Study of the Influencing Factors on the Parasitism between Anisakid Nematodes and Horse Mackerel, Trachurus japonicus." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/55040186758514652009.

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碩士<br>國立臺灣大學<br>動物學研究研究所<br>94<br>The horse mackerel, Trachurus japonicus, is one of the important fish species of fishery industries in Taiwan. The aim of this study is to investigate its parasitic fauna firstly. Secondly, physiological factors of horse mackerel including Fork Length, Hepasomatic Index, Gonosomatic Index, and Index of Stomach Fullness are calculated. The possible influencing effects of these factors were finally tested against the infection status in these fish. Furthermore, the infracommunity of two genera Anisakis and Hysterothylacium populations inside horse mackerel was h

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