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Dissertations / Theses on the topic 'Sharks'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

O'Bryhim, Jason. "Public knowledge, attitudes, and behavior towards sharks and shark conservation." Fairfax, VA : George Mason University, 2009. http://hdl.handle.net/1920/4571.

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Thesis (M.S.)--George Mason University, 2009.<br>Vita: p. 127. Thesis director: Chris Parsons. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Science and Policy. Title from PDF t.p. (viewed Oct. 11, 2009). Includes bibliographical references (p. 121-126). Also issued in print.

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2

Andreev, Plamen Stanislavov. "The early evolutionary history of sharks and shark-like fishes." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5491/.

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The Middle Ordovician to Late Silurian represents an interval of approximately 50 million years, which has been recognised as the initial, cryptic, period in the evolutionary history of chondrichthyan fish. The fossil remains attributed to early chondrichthyans are dominated by isolated dermal scales that predate the appearance of undisputed chondrichthyan teeth and articulated skeletons in the Lower Devonian. Investigation of the inter-relationships of these scale taxa and their systematic position relative to high- ranked chondrichthyan clades has been hampered by the lack of developed scale

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3

Queiroz, Nuno. "Diving behaviour, movement patterns and population structure of blue sharks, Prionace glauca (L. 1758) in the North-east Atlantic." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158318.

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This project provided an exceptional opportunity to describe diving behaviour, movements and to characterise critical habitats of blue sharks in the North-eastern Atlantic using satellite and archival telemetry. Tracked blue sharks displayed southward movements away from the tagging areas, exhibiting pronounced site fidelity to localised high-productivity frontal regions. Blue sharks also displayed a high degree of variability in vertical movements. Shifts in diving behaviour were detected both within and between individuals, whereas behavioural phases were linked to the thermal structure of

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4

Abercrombie, Debra. "Efficient PCR-Based Identification of Shark Products in Global Trade: Applications for the Management and Conservation of Commercially Important Mackerel Sharks (Family Lamnidae), Thresher Sharks (Family Alopiidae) and Hammerhead Sharks (Family Sphyrnidae)." NSUWorks, 2004. http://nsuworks.nova.edu/occ_stuetd/131.

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Shark populations worldwide are suspected to be in severe decline due to domestic and international markets for trade in shark products, especially dried fins in Asian markets, and as a result of bycatch mortality in multi-species fisheries. The management of sharks on a species-specific basis has become imperative for shark conservation, particularly in regions where numerous species are heavily fished, because sharks with differing life-history characteristics respond differently to exploitation. However, many commercially exploited sharks are morphologically similar and not easily identifia

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5

Rodda, Kate. "Development in the Port Jackson shark embryo /." Title page, table of contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phr686.pdf.

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6

Sin, Ying-tung. "Age, growth, and reproductive biology of whitespotted bamboo shark (Chiloscyllium plagiosum) from Hong Kong and adjacent waters." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43085490.

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7

Filmalter, John David. "Movements of sub-adult sicklefin lemon sharks Negaprion acutidens in a remote Indian Ocean atoll." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1018229.

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The sicklefin lemon shark Negaprion acutidens is a large-bodied (> 3m) coastal shark species, widely distributed in tropical and sub-tropical Indo-Pacific waters. Despite its large size and wide distribution, very little is known about its movement behaviour throughout ontogeny. The primary aim of this thesis was to gain an understanding of the movements of sub-adult N. acutidens, in and around the St. Joseph Atoll, Republic of Seychelles, to facilitate the effective conservation of this vulnerable species. A total of 22 sharks (139 – 202 cm TL) were equipped with coded acoustic transmitters a

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8

Blizard, Katherine S. "Shark Sim: A Procedural Method of Animating Leopard Sharks Based on Raw Location Data." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/938.

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Fish such as the Leopard Shark (Triakis semifasciata) can be tagged on their fin, released back into the wild, and their location tracked though technologies such as autonomous robots. Timestamped location data about their target is stored. We present a way to procedurally generate an animated simulation of T. semifasciata using only these timestamped location points. This simulation utilizes several components. Input timestamps dictate a monotonic time-space curve mapping the simulation clock to the space curve. The space curve connects all the location points as a spline without any sharp fo

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9

Powlik, James. "Feeding structures of the white shark, Carcharodon Carcharias (Linnaeus), with notes on other species." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29758.

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Fresh and prepared museum specimens of the white shark Carcharodon carcharias, bull shark Carcharhinus leucas, and salmon shark Lamna ditropis were measured and compared with respect to tooth position and anterior buccal cavity dimensions. Coordinates of functional tooth position were defined by 1) deviation from the midline and 2) degree of erection. Tooth positions were not unique in any region of the mouth/ but demonstrated less variablity within 30° of the midline, particularly for male specimens of all three species (71.48° +- 10° erect) and all Carcharhinus leucas specimens (46.58° +-.96

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10

Gerry, Shannon Page. "Feeding mechanics of a trophic generalist and a specialist shark species : a comparison of diet, behavior and function /." View online ; access limited to URI, 2008. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3314455.

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11

Söderblom, Fredrik. "Disparity of Early Cretaceous Lamniformes sharks." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256605.

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The geological range of lamniform sharks stretches from present day species such as Carcharodon carcharias (great white shark) back to the at the moment oldest undoubted fossil finds during the Early Cretaceous. In this paper a geometric morphometric analysis was performed on images of Early Cretaceous lamniform teeth collected from published literature in order to examine the change in disparity (range of morphological variation within a group) throughout the time period. Due to limited availability of published material and time constraints only the Barremian and Albian ages were investigate

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12

Testerman, Christine B. "Molecular Ecology of Globally Distributed Sharks." Diss., NSUWorks, 2014. https://nsuworks.nova.edu/occ_stuetd/6.

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Many sharks have life history characteristics (e.g., slow growth, late age at maturity, low fecundity, and long gestation periods) that make their populations vulnerable to collapse due to overfishing. The porbeagle (Lamna nasus), bull shark (Carcharhinus leucas), great hammerhead (Sphyrna mokarran), and smooth hammerhead (S. zygaena), are all commercially exploited. The population genetic structure of these species was assessed based on globally distributed sample sets using mitochondrial control region (mtCR) sequences and/or nuclear markers. Complex patterns of evolutionary and demographic

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13

Lowe, Christopher G. "Bioenergetics and swimming efficiency of juvenile scalloped hammerhead sharks, Sphyrna lewini, in Kaneohe Bay, Oahu, Hawaii." Thesis, University of Hawaii at Manoa, 1998. http://hdl.handle.net/10125/18160.

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The goal of this study was to determine the energetic requirements of juvenile scalloped hammerhead sharks (Sphyrna lewini) in Kaneohe Bay, Oahu, Hawaii using a multidisciplinary approach. A large flume/respirometer (635 1) was constructed to determine the critical swimming speeds (Ucrit )' swimming kinematics (tailbeat frequency, tailbeat amplitude, and stride length), and oxygen consumption rates (V02 ) of juvenile sharks over a range of swimming speeds (U). Swimming kinematics were also compared with unconstrained sharks in a seawater pond. These experiments indicated that tailbeat frequenc

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14

Wood, Anthony Darrell. "Population dynamics of the shortfin mako, Isurus Oxyrinchus, in the Northwest Atlantic : an examination of food habits, movement and habitat, survival, and population size /." View online ; access limited to URI, 2007. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3277013.

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15

Kraig, Sarah Elizabeth. "Morphology and systematic implications of fossil and recent Lamnid shark vertebrae using computerized tomography (CT-scanning)." Diss., Connect to online resource - MSU authorized users, 2008.

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16

Huber, Daniel Robert. "Cranial biomechanics and feeding performance of sharks." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001628.

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17

Sundberg, Nilas. "Quantifying Dental Morphological Variation in Lamniform Sharks." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234749.

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18

Weng, Kevin Chi-Ming. "Migration and habitat utilization in lamnid sharks /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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19

Heist, Edward J. "Population genetics of selected species of sharks." W&M ScholarWorks, 1994. https://scholarworks.wm.edu/etd/1539616691.

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Molecular genetic techniques were used to elucidate genetic population structure in three species of sharks, the coastal sandbar shark (Carcharhinus plumbeus) and Atlantic sharpnose shark (Rhizoprionodon terraenovae), and the pelagic shortfin mako (Isurus oxyrinchus). Allozyme analysis and analysis of restriction fragment length polymorphisms (RFLP) of mitochondrial DNA (mtDNA) were used to test the null hypothesis that the mid-Atlantic Bight and the Gulf of Mexico sandbar sharks consist of a single gene pool. RFLP analysis of mtDNA was used to determine the pattern and level of genetic diverg

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20

Heithaus, Michael R. "Habitat use decisions by bottlenose dolphins (Tursiops aduncus) and tiger sharks (Galeocerdo cuvier) in a subtropical seagrass ecosystem." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ61648.pdf.

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21

Davis, Christopher. "Prey Selection by Young Lemon Sharks (Negaprion brevirostris) at Chandeleur Island Nursery Habitats with a Comparison to Three Other Co-Occurring Shark Species." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1281.

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The Chandeleur Islands (Louisiana) contain nursery habitats for lemon sharks that provide abundant prey and protection from predation. Other local shark species (Atlantic sharpnose, bull, and blacktip sharks) co-occur with lemon sharks in the same region, including the nearby Biloxi Marshes. To better assess how lemon sharks use these nursery habitats, I measured diet and prey availability of young of the year and juvenile lemon sharks from 2009 to 2010. Young lemon sharks at the Chandeleur Islands have a relatively reduced diet breadth in comparison to those from nurseries in Bimini (Bahamas)

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22

Peach, Meredith Belinda. "The pit organs of sharks and rays : structure, distribution, evolution and roles in behaviour." Phd thesis, School of Biological Sciences, 2001. http://hdl.handle.net/2123/5901.

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23

Smith, Lauren E. "Behavioural and neural correlates of hydrostatic pressure sensing in sharks." Thesis, University of Aberdeen, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=25327.

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The normal depth usage of the juvenile lemon shark, <i>Negaprion brevirostris </i>was determined using data storage tags which logged pressure and temperature. Sharks were found to predominantly occupy water depths between the surface and 1m. A diel rhythm and a tidal rhythm were found for the pressure data. Simultaneous acoustic tracking showed shallow water use despite the availability of deeper areas within the sharks’ home ranges. All sharks mainly occupied a narrow range of temperatures (29°C - 31°C) at the high end of their range. Temperature data showed mainly diel rhythms with sli

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24

Dulvy, Nicholas K. "Life histories and conservation of sharks and rays." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267726.

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25

Buddle, Alice. "The evolution of viviparity and placentae in sharks." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/25812.

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Most sharks are viviparous, giving birth to live young that complete embryonic development inside of their mother. While we know that viviparity has evolved independently from egg-laying (oviparity) seven times in sharks, the structural and physiological specialisations that support the evolution of pregnancy in sharks are unresolved. In this thesis, I investigate the functional morphology of viviparity in sharks. I begin by reviewing the data on shark reproductive biology, and reveal that embryonic development can be supported by diverse maternal and fetal specialisations during pregnancy. Gi

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26

Di, Santo Valentina. "Is post-feeding thermotaxis advantageous in elasmobranchs?" [Pensacola, Fla.] : University of West Florida, 2009. http://purl.fcla.edu/fcla/etd/WFE0000173.

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Thesis (M.S.)--University of West Florida, 2009.<br>Submitted to the Dept. of Biology. Title from title page of source document. Document formatted into pages; contains 49 pages. Includes bibliographical references.

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27

De, la Puente Jeri Santiago. "Characterizing the knowledge and attitudes towards sharks and the domestic use of shark meat and fins in Peru." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63144.

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Shark populations show evidence of declines at a global scale. Knowledge of the socio-economic consequences of changes in their abundance is limited. Furthermore, research on the status of peoples’ knowledge and attitudes towards sharks and how these affect their values, behaviours and actions is lagging behind the pursuit of biological and ecological concerns. Framed within Peru’s National Plan of Action for the Conservation and Management of Sharks, Rays and Chimeras, the present study sought to: (1) characterize coastal Peruvian’s general knowledge and attitudes towards sharks and shark me

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28

Sin, Ying-tung, and 冼映彤. "Age, growth, and reproductive biology of whitespotted bamboo shark (Chiloscyllium plagiosum) from Hong Kong and adjacent waters." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43085490.

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29

Gustafson, Johann A. "Hammerhead sharks (Sphyrnidae) of southeast Queensland: habitat and movements." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/397639.

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Hammerhead sharks (Sphyrnidae) are iconic and charismatic species that have received little attention until more recently, resulting in knowledge gaps about life histories, habitats, behaviours and migratory drivers, mostly in the southern hemisphere such as Australian waters. Globally, shark populations are declining as many species extinction risk has increased under the threat of fishing and habitat degradation. Hammerhead shark (Sphyrnidae) populations are highly susceptible to human-induced pressure such as long lines and are currently undergoing severe declines, especially in Australia.

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30

French, Georgia Catherine Anne. "Individual and sexual variation in the trophic ecology of the white shark (Carcharodon carcharias)." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/77255/.

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31

Ebert, David A. "The taxonomy, biogeography and biology of cow and frilled sharks (Chondrichthyes : Hexanchiformes)." Thesis, Rhodes University, 1990. http://hdl.handle.net/10962/d1001962.

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This study was undertaken to investigate the taxonomy, biogeography and biology of cow and frilled sharks (Chondrichthyes: Hexanchiformes). This taxon comprises two families, four genera and six extant species. The hexanchoids are a distinctive group of sharks characterized by six or seven paired gill openings, a single dorsal fin and an anal fin. Adult males of this group lack a siphon sac, but have in its place a clasper sac. This structure, which develops along the claspers, is unique to the Hexanchiformes. Hexanchoid sharks are widely distributed in area and depth. This group ranges from c

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32

Jaiteh, Vanessa. ""Sharks are important, but so is rice": Opportunities and challenges for shark fisheries management and livelihoods in eastern Indonesia." Thesis, Jaiteh, Vanessa (2017) "Sharks are important, but so is rice": Opportunities and challenges for shark fisheries management and livelihoods in eastern Indonesia. PhD thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/38470/.

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Targeted fisheries for shark fin are one of the main causes driving the unprecedented decline of shark populations. Despite widespread concern for sharks and calls for their conservation, a lack of data often delays regulatory action for shark fisheries. For over two decades, Indonesia has reported higher average shark landings than any other nation, but information on its shark fisheries is extremely limited. The eastern Indonesian shark fishery, here defined to extend from East Nusa Tenggara to Papua, is virtually data-less and beyond the focus of central fisheries agencies. The lack of esse

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33

Ryklief, Rabiah. "Population dynamics of the white shark, Carcharodon carcharias, at Mossel Bay, South Africa." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1012077.

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Mossel Bay is internationally recognised as one of the centres of abundance of white sharks in South Africa. During 2008 – 2010 there were four sites within the bay i.e. Seal Island, Hartenbos, Kleinbrak and Grootbrak, which were sampled to gain insight into the population dynamics of this species. Currently, life history information on white sharks in this area is limited. This study used a combination of mark-recapture using photographic identification techniques and sight per unit effort methods. Inter-annual, seasonal and spatial patterns in abundance are assessed. The effects of environme

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34

Leung, Chak-cheong. "Trace metals in sharks' fins : potential health consequences for consumers /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39602230.

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35

梁澤昌 and Chak-cheong Leung. "Trace metals in sharks' fins: potential health consequences for consumers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B45013767.

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36

Mitchell, Michaela Grace. "Convergent Evolution in Tooth Morphology of Filter Feeding Lamniform Sharks." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1478543402652077.

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37

Dowd, W. Wesley. "Metabolic Rates and Bioenergetics of Juvenile Sandbar Sharks (Carcharhinus plumbeus)." W&M ScholarWorks, 2003. http://www.vims.edu/library/Theses/Dowd03.pdf.

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38

Peterson, Cassidy. "Patterns of Abundance and Community Dynamics in Atlantic Coastal Sharks." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1539617961.

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39

Forney, Christina. "State Estimation for Tracking of Tagged Sharks with an AUV." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/664.

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Presented is a method for estimating the planar position, velocity, and orientation states of a tagged shark. The method is designed for implementation on an Autonomous Underwater Vehicle (AUV) equipped with a stereo-hydrophone and receiver system that detects acoustic signals transmitted by a tag. The particular hydrophone system used here provides a measurement of relative bearing angle to the tag, but does not provide the sign (+ or -) of the bearing angle. A particle filter was used for fusing measurements over time to produce a state estimate of the tag location. The particle filter combi

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40

Franks, Bryan Robert Spotila James R. Gruber Samuel. "The spatial ecology and resource selection of juvenile Lemon sharks (Negaprion brevirostris) in their primary nursery areas /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/2528.

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41

李瑪麗 and Lai-yung Mary Lee. "A study of the visual system in the shark, Hemiscyllium plagiosum." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1985. http://hub.hku.hk/bib/B31206980.

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42

Murray, Debra Lee. "Aquaporin 3 water channel protein gene expression in squalis acanthias dogfish shark by Debra Lee Murray." Click here to access thesis, 2008. http://www.georgiasouthern.edu/etd/archive/fall2007/debra_l_murray/murray_debra_l_200808_MS.pdf.

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Thesis (M.S.)--Georgia Southern University, 2008.<br>"A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Directed by Christopher P. Cutler. ETD. INDEX WORDS: Aquaporin, Aquaglyceroporin, Osmoregulation, Water Homeostasis, Elasmobranch, Biological Transport, Molecular Sequence, Sequence Homology, Kidney, Rectal Gland Includes bibliographical references (p. 116-120) and appendices.

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Lee, Lai-yung Mary. "A study of the visual system in the shark, Hemiscyllium plagiosum /." Hong Kong : University of Hong Kong, 1985. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1231383X.

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44

Capelli, Lisa. "DNA barcoding taxonomy and diversity of the Mediterranean sharks and rays." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3214/.

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Elasmobranchs are an important by-catch of commercial fisheries targeting bony fishes. Fisheries targeting sharks are rare, but usually almost all specimen bycatched are marketed. They risk extinction if current fishing pressure continues (Ferretti et al., 2008). Accurate species identification is critical for the design of sustainable fisheries and appropriate management plans, especially since not all species are equally sensitive to fishing pressure (Walker & Hislop 1998). The identification of species constitutes the first basic step for biodiversity monitoring and conservation (Dayr

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45

Graham, Rachel T. "Behabiour and conservation of whale sharks on the Belize barrier reef." Online version, 2003. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.410649.

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46

Cox, Georgina Kimberly. "The functional significance and evolution of the coronary circulation in sharks." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/56219.

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The coronary circulation first appeared in the chordate lineage in cartilaginous fishes where it perfuses the entire myocardium, just like in birds and mammals but unlike in most teleost fishes. Yet, despite the pivotal position of elasmobranchs in the evolution of the coronary oxygen supply, the functional significance of their coronary circulation has never been investigated. Elasmobranchs are of special interest because of the morphological arrangement of their cardiomyocytes, which has resulted in the majority of the ventricular myocardium having access to oxygen from both a coronary suppl

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Graham, Rachel T. "Behaviour and conservation of whale sharks on the Belize Barrier Reef." Thesis, University of York, 2003. http://etheses.whiterose.ac.uk/2534/.

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48

Walker, Christina J. "Assessing the Effects of Pollutant Exposure on Sharks: A Biomarker Approach." UNF Digital Commons, 2011. http://digitalcommons.unf.edu/etd/141.

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Many hydrophobic environmental pollutants have been shown to bioaccumulate and biomagnify at high levels in sharks due to their high liver lipid content, high trophic level, and life history characteristics. Studies have demonstrated that the levels of pollutants present in shark tissues can not only exceed the recommended levels for human consumption, but that, in some cases, they are also greater than the threshold for physiological effect in other aquatic species. However, few studies to date have investigated the biological effect of environmental exposure to contaminants in sharks. Theref

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49

Hughes, Benjamin. "Automated detection and shape based recognition of individual great white sharks." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701973.

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Systems that classify images by the individual animals they contain have widespread applicability in field-based ecology and conservation research, allowing individuals to be recognised repeatedly in a non-invasive way. The aim of this thesis is the design of such systems for animal species where individuals exhibit visually unique body morphologies, with the specific objective that individuals are recognised fully automatically. A two-stage approach is adopted to achieve this objective, as illustrated for the task of recognising individual great white sharks. First, a model is trained for aut

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50

Grainger, Richard John. "Foraging and Nutritional Ecology of Eastern Australian White Sharks (Carcharodon carcharias)." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29920.

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Understanding and predicting foraging requires considering animals’ intrinsic (physiological) state, extrinsic (environmental/ecological) context, and the reciprocal interplays between these that shape feeding and behaviour. In particular, interactions between nutritional requirements (macronutrient balance) and ecological context are key determinants of foraging. Understanding these dynamics is especially critical in trophic keystone species, like marine top predators. Yet challenges in spatiotemporal observation and insufficient information on marine prey nutritional variability have limited

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