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Articles 1 - 8 of 8
Full-Text Articles in Marine Biology
The Relationship Between Biofouling Adhesion And Frequency Of Mechanical Cleaning To Control The Recruitment To Clear Coatings, Dylan Thomas Eggers
The Relationship Between Biofouling Adhesion And Frequency Of Mechanical Cleaning To Control The Recruitment To Clear Coatings, Dylan Thomas Eggers
Theses and Dissertations
There is a need to control biofouling on sensors and transparent windows in the marine environment. Clear silicone coatings offer a method to reduce the adhesion strength of marine organisms to the surface, however, these also require mechanical cleaning to maintain the surfaces free of fouling. This research evaluated the performance of eighty seven formulations and took the top two candidates to investigate a) the frequencies of wiping required by a brush to maintain two coatings and uncoated glass surfaces free of fouling and b) the effects of clear silicone coatings fouling release properties on required frequencies. The panels were …
The Form And Function Of Cranial Spines In Fishes, Louis Michael Penrod
The Form And Function Of Cranial Spines In Fishes, Louis Michael Penrod
Theses and Dissertations
Despite the prevalence of fishes that express cranial spines, quantitative investigations into the function of these spines are rare. Function is often assumed with little or no evidence. Commonly, spine-like structures are considered to be used for defense despite spines potentially being used for other purposes. Here, I took a high-level approach to investigate the morphology and potential functions of cranial spines in over 2000 fishes. Identifying the function of cranial spines in fishes not only informs us as to how these fishes interact with conspecifics, with other species, and with their environment, but also may provide advances in human …
Variations In Otolith-Zinc Concentrations Of Brown Surgeonfish (Acanthurus Nigrofuscus) Between Marine Protected Areas And Fished Reefs, Matthew Austin Nichols
Variations In Otolith-Zinc Concentrations Of Brown Surgeonfish (Acanthurus Nigrofuscus) Between Marine Protected Areas And Fished Reefs, Matthew Austin Nichols
Theses and Dissertations
As human populations continue to increase, the growing reliance on exploited fish stocks has furthered patterns of declining body size and biomass worldwide. To mitigate these impacts, fisheries managers have implemented a variety of conservation strategies, including marine protected areas (MPA), as these serve as a refuge for fish, resulting in increases in numerous health metrics (fish density, biomass, body-size, and species diversity). By using fish otolith samples previously concluded to have physiological and morphometric differences between MPA and fished reef (FR) fish, this thesis explores the potential of using microchemical analysis of zinc (Zn) to reveal impacts MPAs might …
The Potential Of Indian River Lagoon Muck To Act As A Reservoir For Emerging Organic Contaminants, Gregory David Belson
The Potential Of Indian River Lagoon Muck To Act As A Reservoir For Emerging Organic Contaminants, Gregory David Belson
Theses and Dissertations
Pharmaceuticals, pesticides, and personal care products are frequently found in sediments and waterways around the world. These chemicals, collectively known as Emerging Organic Contaminants (EOCs) can harm the environments in which they are deposited by killing or stressing the local flora and fauna. These EOCs also can be released back into the water column when these substrates are disturbed. Such sediments and their associated EOCs are particularly problematic in urbanized areas. However, the particular composition of urbanization-associated sediments as well as their potential to harbor EOCs needs to be evaluated in the context of their environment, to ensure proper mitigation …
Geographic Variability In The Reproductive Hormones And Oocyte Maturation Of Bonefish (Albula Vulpes) In The Bahamas, Ashley Yarbrough
Geographic Variability In The Reproductive Hormones And Oocyte Maturation Of Bonefish (Albula Vulpes) In The Bahamas, Ashley Yarbrough
Theses and Dissertations
Bonefish (Albula vulpes) are an extremely popular sport fish that are a vital component of the multimillion-dollar recreational flats fishery. Despite its economic importance for many countries, there is little information available about many aspects of their reproductive biology. Significant gaps include analysis of the hormones that influence oocyte development and the nutrient levels in oocytes that drive embryonic and early larval development and how these parameters vary among habitats. The goals of this study were to characterize and quantify the reproductive hormones, oocyte developmental stages, and nutrient composition of oocytes from fish at or near spawning sites across multiple …
Nursery Habitat Characteristics Of Juvenile Tarpon, Megalops Atlanticus, In The Northern Indian River Lagoon, Fl, Austen Zugelter
Nursery Habitat Characteristics Of Juvenile Tarpon, Megalops Atlanticus, In The Northern Indian River Lagoon, Fl, Austen Zugelter
Theses and Dissertations
The life history of tarpon is complex, involving multiple ontogenetic habitat shifts, which spatially separate larval, juvenile, and adult populations. Juvenile tarpon are obligate users of mangrove and marsh ecosystems as nursery habitats, whereas adults use the coastal ocean. Habitat loss/fragmentation due to coastal development however, threatens the availability and quality of obligate juvenile tarpon nursery habitat. Furthermore, there is a general lack of data on the environmental characteristics and spatial coverage of these important habitats. The goal of the present study was to identify potential environmental characteristics related to juvenile tarpon habitat utilization in the northern Indian River Lagoon, …
Ontogeny Of Similarity And Disparity In Length-At-Age Of Coral Reef Fishes In The Family Acanthuridae Between Marine Protected And Fished Areas, Mathias Tjarko Cramer
Ontogeny Of Similarity And Disparity In Length-At-Age Of Coral Reef Fishes In The Family Acanthuridae Between Marine Protected And Fished Areas, Mathias Tjarko Cramer
Theses and Dissertations
Drastic reductions in the harvestable biomass of exploited fish populations on coral reefs and other marine coastal ecosystems have been hypothesized to be a consequence of astronomical and unrelenting fishing pressures, particularly in the coastal small-scale and sustenance fisheries of the world. It has recently been proposed that the causal relationship between fishing pressure and fish biomass is rooted in the negative effects of size-selective fishing mortality, which consequently instigates directional shifts in phenotype (i.e., fishing induced evolution). To mitigate the effects of unsustainable fishing pressures, parcels of traditional fishing grounds have been designated as Marine Protected Areas (MPAs). To …
Developmental Analysis Of Rod And Cone Photoreceptor Architecture In The Retina Of The Green Sea Turtle (Chelonia Mydas), Nikia Lynn Rice
Developmental Analysis Of Rod And Cone Photoreceptor Architecture In The Retina Of The Green Sea Turtle (Chelonia Mydas), Nikia Lynn Rice
Theses and Dissertations
All sea turtle species are threatened or endangered, some critically so. Vision is key to individual success in sea turtles; they use their vision for sea finding at hatching, foraging and predator avoidance throughout life, and mating and nesting as adults. This research project provides a comprehensive analysis throughout development (the first of kind) of the outer retina of the green turtle, Chelonia mydas. The research project included characterization of the retina biochemically via immunohistochemistry and histologically via light microscopy, both done over the course of development from hatchling through adult. At all stages, the retina was duplex, containing both …