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Title: The Effect of Time on Visual Search Patterns.
Creator: Tamir, Daniel, Higgen, Bonnie, Paredes, Luis, Taner, Utku, Office of Undergraduate Research and Inquiry
Abstract/Description: Spatial intelligence is the ability to conceptualize and comprehend complicated visual scenes. Previous studies have shown that scanning patterns change based on the content and the layout viewed. For example, subjects will scan a webpage differently when imagery is present as opposed to reading text-only pages. This study proposes the question: Does the element of time have a crucial effect on scanning patterns and the degree of comprehension? With the aid of eye-tracking technology, this...
Show moreSpatial intelligence is the ability to conceptualize and comprehend complicated visual scenes. Previous studies have shown that scanning patterns change based on the content and the layout viewed. For example, subjects will scan a webpage differently when imagery is present as opposed to reading text-only pages. This study proposes the question: Does the element of time have a crucial effect on scanning patterns and the degree of comprehension? With the aid of eye-tracking technology, this paper will explore subjects’ fixation durations and saccade patterns in a timed environment. The results may potentially influence methods for administering timed evaluations in the educational system.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00005575
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: The effect of parasite infection on reproductive potential of bony fish.
Creator: Young, Joy M., Whittington, Jim, Graduate College, Hughes, Colin
Abstract/Description: Accurate predictions of population growth, including reproduction, are vital for the effective management of fisheries. However, factors effecting reproductive potential in boney fishes are not entirely understood. In several species of fish, parasite infection has been associated with decreased fecundity including fewer and smaller eggs, shortened spawning season, and decreased larval survival. We examined the effect of parasite infection and life history parameters on egg quality of 40...
Show moreAccurate predictions of population growth, including reproduction, are vital for the effective management of fisheries. However, factors effecting reproductive potential in boney fishes are not entirely understood. In several species of fish, parasite infection has been associated with decreased fecundity including fewer and smaller eggs, shortened spawning season, and decreased larval survival. We examined the effect of parasite infection and life history parameters on egg quality of 40 spawning capable female common snook, Centropomus undecimalis, collected from 3 inlets on the Atlantic coast of Florida in the summer of 2013. Egg quality was measured as fatty acid DHA, PI, and EPA composition of eggs. Six major taxons of parasites were identified: Cestoda 1 adult, 68 trypanorhyncha larvae, Copepoda 1 Lernae sp., 62 Lernanthropus sp., Digenea 1 adult, Monogenea 1 adult, Nematoda 861 Contracecum sp., and Pentastomida 36 Sebekia sp.. In addition, dead parasites of unknown taxa 262 total were counted. Parasite infracommunities were described as total number of live parasites per individual, total number of dead parasites per individual, the Shannon Wiener Index H as a measure of diversity, and the Berger-Parker Index BPI as a measure of numerical dominance. Total number of dead parasites and BPI had a significant, negative effect on percent composition of DHA of eggs. Individuals with higher amounts of dead parasites 20 were predicted to drop below a 13 DHA composition threshold needed for hatching and larval success.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00005174
Format: Document (PDF)

Title: The Effect of Inactivation of the Nucleus Reuniens on Spatial Working Memory.
Creator: Martinez Rey, Macarena, Minnerly, Christopher, Vertes, Robert P., Office of Undergraduate Research and Inquiry
Abstract/Description: The Nucleus Reuniens (RE) of the ventral midline thalamus has been shown to have extensive reciprocal innervations with the medial prefrontal cortex (mPFC) and the hippocampus (HF) in the brain of the rat. Both structures are essential for encoding, retrieval, and delayed spatial working memory. The (RE) is believed to play a vital role in facilitating cognitive function and affective behavior and has been shown to be critical for a variety of working memory tasks. In this study we tested...
Show moreThe Nucleus Reuniens (RE) of the ventral midline thalamus has been shown to have extensive reciprocal innervations with the medial prefrontal cortex (mPFC) and the hippocampus (HF) in the brain of the rat. Both structures are essential for encoding, retrieval, and delayed spatial working memory. The (RE) is believed to play a vital role in facilitating cognitive function and affective behavior and has been shown to be critical for a variety of working memory tasks. In this study we tested Long Evan rats using a T-maze. For each trial the rats were required to alternate between the left and right goal arms with a delay period in between randomized intervals of 30s, 60s, or 120s. After two consecutive testing days of 80% the rats were infused with muscimol procaine, and saline. We expect that the effect of reversible inactivation of RE will demonstrate a significant decline in performance of the task.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00005588
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: The Effect of Flexibility and Aspect Ratios on Ribbon-Fin-Propulsion.
Creator: Liu, Hanlin, Taylor, Bevan, Lashaw, Evan, Graduate College, Curet, Oscar M.
Abstract/Description: Ribbon-fin-based propulsion has the potential to improve the maneuverability of underwater vehicles in complex environments. In this type of propulsion a series of rays are used to send traveling waves along an elongated fin, which is referred to as ribbon fin. In this work, in order to know the effect of flexural rigidities and aspect ratios on undulating ribbon fin propulsion; we built a robotic ribbon fin, and tested the physical model in a water flume. In a series of experiments we...
Show moreRibbon-fin-based propulsion has the potential to improve the maneuverability of underwater vehicles in complex environments. In this type of propulsion a series of rays are used to send traveling waves along an elongated fin, which is referred to as ribbon fin. In this work, in order to know the effect of flexural rigidities and aspect ratios on undulating ribbon fin propulsion; we built a robotic ribbon fin, and tested the physical model in a water flume. In a series of experiments we measured the propulsive force, power consumption and the free-swimming speed of the robotic fin as a function of wave frequency for fins with different ray stiffness and aspect ratios. The propulsive performance of the robotic ribbon fin was based on the propulsive force generated and power consumption. A series of kinematic experiments were performed using a high-speed camera. Based on the fin kinematics, the natural frequencies of the ribbon fin with different stiffness were determined. We found that the flexible rays would improve or worsen the propulsive performance compared to a rigid counterpart depending on the actuation parameters. For the aspect ratios considered, the propulsive efficiency improves with increase in the fin height. Our data suggest that, the ribbon fin can yield best propulsive behavior close to its natural frequency.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005881
Format: Document (PDF)

Title: The Determinants of Democratic Consolidation in Eastern Europe and the Former USSR.
Creator: Dolun, Deniz, Shaykhutdinov, Renat, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description: The process of democratization still remains an ongoing process in the majority of the Eastern Bloc nations. A quarter century after the dissolution of the USSR and her satellite states, only eight of twenty-eight transitioning states have been able to fully democratize. Several of these anocratic states are today characterized by routine human rights violations, state repressions of civil society, and incarcerations of political opposition. There is limited cohesive research on how the Post...
Show moreThe process of democratization still remains an ongoing process in the majority of the Eastern Bloc nations. A quarter century after the dissolution of the USSR and her satellite states, only eight of twenty-eight transitioning states have been able to fully democratize. Several of these anocratic states are today characterized by routine human rights violations, state repressions of civil society, and incarcerations of political opposition. There is limited cohesive research on how the Post-Communist formation of oligarchs across Eurasia and increases in democratic transitioning period have influenced democratization. In this study, I research, test, and explain the effects of Post-Communist oligarchies and the periods of democratic transitions on current levels of democratic consolidation in twenty-eight former socialist states through publicly available statistics and primary sources. I find that while oligarchical influence on democratization is limited, shorter democratic transitions produce significantly higher levels of democratic consolidation than their prolonged counterparts.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005183
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: The construction of metal-organic hybrid materials based on benzophenone-4,4'-dicarboxylic acid.
Creator: Zribi, Dan, Torres, Melissa, De Lill, Daniel T.
Date Issued: 2013-04-05
PURL: http://purl.flvc.org/fcla/dt/3361243
Subject Headings: Dicarboxylic acids, Benzophenones, Lanthanides, Transition metals
Format: Document (PDF)

Title: The bidirectional interaction of oxytocin and cortisol levels in mother-infant dyads: a pilot study.
Creator: McDole, Brittnee, Hardin, Jillian, Jones, Nancy Aaron, Mize, Krystal D.
Date Issued: 2013-04-05
PURL: http://purl.flvc.org/fcla/dt/3361151
Subject Headings: Oxytocin, Cortisol, Infants--Development, Infants--Growth, Mother and infant
Format: Document (PDF)

Title: The American Family…As Seen on TV?.
Creator: Weisler, Joseph, Carreno-Lukasik, Gina, Office of Undergraduate Research and Inquiry
Abstract/Description: The public sphere has been long- saturated with the spectacle. Among the most prominent form of the spectacle on television is noted through infamous family sitcoms that work to explain the dynamics of family life. Sociologists have long questioned the role of the family, working to define it as an evolving institution. This qualitative deductive research study seeks to examine American family life and how it is sociologically interpreted on the screen. Using the sitcoms “Full House” to...
Show moreThe public sphere has been long- saturated with the spectacle. Among the most prominent form of the spectacle on television is noted through infamous family sitcoms that work to explain the dynamics of family life. Sociologists have long questioned the role of the family, working to define it as an evolving institution. This qualitative deductive research study seeks to examine American family life and how it is sociologically interpreted on the screen. Using the sitcoms “Full House” to examine the role of fathers in the family; “Step By Step” to evaluate the dynamic of step-family life; “George Lopez” and “One Day at a Time” to observe Latino-American life; “Black-ish” to understand the realities of Black-American life, and “Boy Meets World” to determine the ways in which education is responsible for shaping identity; this study works to embed and question the depictions of sitcoms into an analysis of American family life.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005639
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Testing Links Between Cognition and Stress Responsiveness in a Songbird.
Creator: Jenny Applebaum, Rindy Anderson
Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FAU_SR00000001
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Temporal Ontogeny of Epileptogenesis in a Model of Adult-onset, Spontaneous Seizures.
Creator: Melanie Gil, Rachel St. Clair, Ceylan Isgor
Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FAU_SR00000010
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Technology and Design of a Fuel Cell - Photo-Voltaic Powered Vehicle with an Energy Storage System.
Creator: Augustin, Windy, Carvalho Dias, Thiago, Flit, Mike, Bennett, Thomas, Zilouchian, Ali
Abstract/Description: FAU's Office of Undergraduate Research and Inquiry hosts an annual symposium where students engaged in undergraduate research may present their findings either through a poster presentation or an oral presentation.
Date Issued: 2011
PURL: http://purl.flvc.org/fau/fd/FA00005427
Format: Document (PDF)

Title: Taxation and the Separation of Church and State.
Creator: Roman, Abel, Arflin, Cheryl, Office of Undergraduate Research and Inquiry
Abstract/Description: The separation of church and state was passed under the First Amendment in 1791. However, Since its inception the United States has not followed through with this philosophy. Since colonial times, churches have been privileged with tax exemptions. Nine out of the thirteen colonies had some form of tax relief to aid their churches. This right was granted to all religious organizations with the expectation that they would contribute to their communities by providing aid to the poor. Through...
Show moreThe separation of church and state was passed under the First Amendment in 1791. However, Since its inception the United States has not followed through with this philosophy. Since colonial times, churches have been privileged with tax exemptions. Nine out of the thirteen colonies had some form of tax relief to aid their churches. This right was granted to all religious organizations with the expectation that they would contribute to their communities by providing aid to the poor. Through their constant reformation, tax laws have achieved a more rigorous stance on religious tax exemptions, yet lack the integrity needed to prevent religious organizations from taking advantage of the current tax laws. The objective of this project is to analyze how the church went from being humble, to a corporation that exploits the current tax exemptions law, and how we need reconstruct the current tax exemptions on religious organization.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00005602
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Task Decoding using Recurrent Quantification Analysis of Eye Movements.
Creator: LaCombe, Daniel C. Jr., Barenholtz, Elan, Graduate College
Abstract/Description: In recent years, there has been a surge of interest in the possibility of using machine-learning techniques to decode generating properties of eye-movement data. Here we explore a relatively new approach to eye movement quantification, Recurrence Quantification Analysis RQA— which allows analysis of spatio-temporal fixation patterns — and assess its diagnostic power with respect to task decoding. Fifty participants completed both aesthetic-judgment and visual-search tasks over natural images...
Show moreIn recent years, there has been a surge of interest in the possibility of using machine-learning techniques to decode generating properties of eye-movement data. Here we explore a relatively new approach to eye movement quantification, Recurrence Quantification Analysis RQA— which allows analysis of spatio-temporal fixation patterns — and assess its diagnostic power with respect to task decoding. Fifty participants completed both aesthetic-judgment and visual-search tasks over natural images of indoor scenes. Six different sets of features were extracted from the eye movement data, including aggregate, fixation-map, and RQA measures. These feature vectors were then used to train six separate support vector machines using an n-fold cross validation procedure in order to classify a scanpath as being generated under either an aesthetic-judgment or visual- search task. Analyses indicated that all classifiers decoded task significantly better than chance. Pairwise comparisons revealed that all RQA feature sets afforded significantly greater decoding accuracy than the aggregate features. The superior performance of RQA features compared to the others may be that they are relatively invariant to changes in observer or stimulus; although RQA features significantly decoded observer- and stimulus-identity, analyses indicated that spatial distribution of fixations were most informative about stimulus-identity whereas aggregate measures were most informative about observer-identity. Therefore, changes in RQA values could be more confidently attributed to changes in task, rather than observer or stimulus, relative to the other feature sets. The findings of this research have significant implications for the application of RQA in studying eye-movement dynamics in topdown attention.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005892
Format: Document (PDF)

Title: Taking a Brain Break.
Creator: Burton, Christiania, Dassa, Lori, Office of Undergraduate Research and Inquiry
Abstract/Description: The purpose of the project was to see if giving students a structured physical activity break after a lesson and before the intended summative assessment would increase their scores academically and/ or decrease their test anxiety. The idea was acquired from spending over 1,000 hours in elementary school classrooms ranging from kindergarten to fifth grade. It was observed that after a 30-minute math lesson, the students were expected to take an assessment based on the content of the lesson....
Show moreThe purpose of the project was to see if giving students a structured physical activity break after a lesson and before the intended summative assessment would increase their scores academically and/ or decrease their test anxiety. The idea was acquired from spending over 1,000 hours in elementary school classrooms ranging from kindergarten to fifth grade. It was observed that after a 30-minute math lesson, the students were expected to take an assessment based on the content of the lesson. It seemed as if students were having a difficult time focusing on the test and were getting wiggly in their seats. The students seemed nervous to take a test directly after instruction and some of the scores were not as high as intended. This was the basis behind conducting this research. There had to be a solution to this problem and the researcher was determined to find one.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005616
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: T.O.S.S ( The Official Shredding System).
Creator: Vanande, Katryna, Horowitz, Arielle, Smith, Jo Mei, Zingman, Shana
Abstract/Description: In the past 24 years, the United States Postal Service (USPS) has decommissioned over 218,064 mail drop-off collection boxes due to lack of usage. The mail collection at these mailboxes is projected to drop even more in the coming years. This project's objective is to repurpose the decommissioned mailboxes into The Official Shredding System (TOSS). TOSS will be a publicly accessible shredding service located at official USPS locations to ensure security. TOSS will allow people to destroy...
Show moreIn the past 24 years, the United States Postal Service (USPS) has decommissioned over 218,064 mail drop-off collection boxes due to lack of usage. The mail collection at these mailboxes is projected to drop even more in the coming years. This project's objective is to repurpose the decommissioned mailboxes into The Official Shredding System (TOSS). TOSS will be a publicly accessible shredding service located at official USPS locations to ensure security. TOSS will allow people to destroy sensitive documents and mail with personal information in a secure setting. The shredded documents will ultimately be recycled through the current USPS recycling system. The goal and research of the project is to demonstrate how interdisciplinary studies of graphic design and engineering can work together to address and solve social problems. The result of this project will be communicated in a concept manual.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA0005039
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Synthesis of Podophyllotoxin Derivatives.
Creator: Flint, Madison, Roche, Stéphane P.
Abstract/Description: Podophyllotoxin is a natural aryltetralin lignan compound isolated from plants within the genus Podophyllum. Podophyllotoxin has been under extensive biochemical investigation since the discovery of its biological activity as a strong microtubule destabilizing mitotic agent. Although these antineoplastic compounds have shown significant activity as cancerous cell growth inhibitors, they lack selectivity and are thus extremely toxic to healthy cells. This has led to a recent interest in the...
Show morePodophyllotoxin is a natural aryltetralin lignan compound isolated from plants within the genus Podophyllum. Podophyllotoxin has been under extensive biochemical investigation since the discovery of its biological activity as a strong microtubule destabilizing mitotic agent. Although these antineoplastic compounds have shown significant activity as cancerous cell growth inhibitors, they lack selectivity and are thus extremely toxic to healthy cells. This has led to a recent interest in the synthesis of Podophyllotoxin analogues in hopes of optimizing the biological selectivity and potency of these semi-synthetic derivatives. The objective of my research in the Roche group is to generate a library of these derivatives for subsequent biological assays to determine their potential as chemotherapeutic agents. In total I have synthesized 22 Podophyllotoxin analogues. Of these 22 derivatives, 14 have been biologically evaluated and 4 were observed to possess promising anti-cancer activity and are currently undergoing further evaluation.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA0005014
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Synthesis of Complex Polycyclic Scaffolds Incorporating α-Amino Esters.
Creator: Zorc, Stephen A., Samanta, Shyam S., Roche, Stéphane P., Charles E. Schmidt College of Science
Abstract/Description: In order to keep up with the high demand for biologically active molecules, chemists devised several synthetic strategies to access novel chemical spaces. The two main strategies to construct new scaffolds are to revisit underexploited or forgotten reactions or to devise new transformations. We are exploring a unique and underexploited reaction, the Himbert–Henn cycloaddition, to produce complex molecular scaffolds in a single step (strategy 1). In a second novel approach, we are modifying...
Show moreIn order to keep up with the high demand for biologically active molecules, chemists devised several synthetic strategies to access novel chemical spaces. The two main strategies to construct new scaffolds are to revisit underexploited or forgotten reactions or to devise new transformations. We are exploring a unique and underexploited reaction, the Himbert–Henn cycloaddition, to produce complex molecular scaffolds in a single step (strategy 1). In a second novel approach, we are modifying the Hantzsch 4-component reaction (4CR) by incorporating an α-amino ester residue to construct new molecules (strategy 2). Both of these reactions have great potential to synthesize novel and chiral molecules from proteinogenic α-amino esters. These unprecedented and complex polycyclic molecules have potential application in medicinal chemistry and natural product synthesis. 4-aza-podophyllotoxins obtained by the Hantzsch-4CR have been proven to be potent as anti-leukemia, anti-colon cancer, and vascular disrupting agents (with nanomolar activity).
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005218
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Synthesis and Sensing Studies of Erbium MOF Based on 2-2’-bithiophene- 5,5’-dicarboxylic acid.
Creator: Ortega, Raul E., Einkauf, Jeffrey D., De Lill, Daniel T., Mathivathanan, Logesh, Office of Undergraduate Research and Inquiry
Abstract/Description: Metal-organic frameworks (MOFs), are a unique class of materials in which metal clusters are linked together by organic moieties forming porous 1-D, 2-D, and 3-D structures. MOFs have many applications resulting from not only the overall structure, but also the metal center, organic “linker”, or a combination thereof. The high surface areas and porosity of these materials have found use in heterogeneous catalysis, display technologies, semiconducting materials, and biomedicine. These...
Show moreMetal-organic frameworks (MOFs), are a unique class of materials in which metal clusters are linked together by organic moieties forming porous 1-D, 2-D, and 3-D structures. MOFs have many applications resulting from not only the overall structure, but also the metal center, organic “linker”, or a combination thereof. The high surface areas and porosity of these materials have found use in heterogeneous catalysis, display technologies, semiconducting materials, and biomedicine. These materials are also currently being developed as a new sensor technology for detection of potentially harmful chemicals. Nitroaromatics are key components in the fabrication of explosives, however, current detection methods are time consuming and expensive. Considering this, our interest lies in synthesizing MOFs that can be used as a sensor for nitroaromatic compounds. To this end, our lab has developed a new Er(III) MOF based on the linker 2-2’-bithiophene-5,5’-dicarboxylic acid (DTDC). Herein, synthesis and nitroaromatic sensing studies will be discussed.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005632
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Swimming Upstream: Summary of Findings from The Writing Hour Micro-autoethnography.
Creator: Kamin, Fran, Felsher, Rivka A., Brittain, Kristin, Graduate College, Swann, Elizabeth G., Bryan, Valerie
Abstract/Description: This qualitative, micro-autoethnographic study explored the perceptions of four female doctoral students at FAU that made up the founding and consistent membership of a self-created, self-directed, and self-sustaining blendedlearning cohort focused on doctoral dissertation completion. The participants also served as co-researchers of this study that investigated their motivation to persist through their doctoral programs in educational leadership with a focus on the dissertation phase. This...
Show moreThis qualitative, micro-autoethnographic study explored the perceptions of four female doctoral students at FAU that made up the founding and consistent membership of a self-created, self-directed, and self-sustaining blendedlearning cohort focused on doctoral dissertation completion. The participants also served as co-researchers of this study that investigated their motivation to persist through their doctoral programs in educational leadership with a focus on the dissertation phase. This study utilized group and individual interviews, spontaneous drawing, document review, and the SDLRS instrument to collect and analyze data on the group’s formation, development, challenges, culture, sustaining factors, and outcomes. Findings show that while this group of doctoral students faced substantial challenges and distractions, their self-created cohort evolved through the stages of group development into a viable and supportive community of practice based on their learner motivation orientations achievement and affiliation, personal strengths, and strategies that included dependence on technology; meeting structure, time management techniques, rules, sharing, critiquing, accountability, artificial deadlines, and emotional support. This study fills a major void in the literature. While research exists that examine doctoral cohorts, graduate student retention factors, and graduate student peer mentoring, literature is sparse regarding the outcomes of self-created and self-sustaining graduate student cohorts. Given the high rate of attrition among doctoral students across disciplines in the U.S., the implications of this study include improvement of graduate student advising, suggestions for supportive restructuring of graduate study programs toward increased retention, and the creation of an empowering model for student cohort formation to be validated through further research.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005886
Format: Document (PDF)

Title: Swimming Kinematics of Juvenile Sphyrna Lewini.
Creator: Hoffmann, Sarah, Sanders, R., Porter, M. E., Graduate College
Abstract/Description: The head of Sphyrnid sharks is an exaggerated dorso-ventrally compressed cephalofoil, which likely influences their swimming kinematics. Previous researchers hypothesized that the cephalophoil may act as a stabilizer during turning to maintain the shark’s position parallel to the substrate. Sphyrnid sharks have also been shown to be highly maneuverable and more flexible when compared to other shark species. Here, we explore swimming performance variable of Sphyrna lewini scalloped hammerhead...
Show moreThe head of Sphyrnid sharks is an exaggerated dorso-ventrally compressed cephalofoil, which likely influences their swimming kinematics. Previous researchers hypothesized that the cephalophoil may act as a stabilizer during turning to maintain the shark’s position parallel to the substrate. Sphyrnid sharks have also been shown to be highly maneuverable and more flexible when compared to other shark species. Here, we explore swimming performance variable of Sphyrna lewini scalloped hammerhead during swimming. We obtained video of juvenile Sphyrna lewini swimming from dorsal and lateral views. We assigned 15 anatomical landmarks on the shark and tracked the movement of each during swimming. Anatomical landmarks included points on the cephalofoil, pectoral fins, caudal fin, and along the body midline. The movements of these points were correlated with swimming performance variables such as velocity, tail beat frequency, and tail beat amplitude. We also examined variables such as head yaw and body curvature along the length of the body.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005884
Format: Document (PDF)

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