Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Flatfish"”.
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Physiological and psychological aspects of flatfish camouflage.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Biology.
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Flatfish stock enhancement: Examining conditioning strategies to promote success
… degree of "wild" experience prior to release. Flatfish trained for "wild" conditions may more easily and successfully transition to natural environments. This dissertation identifies strategies that optimize feeding-related performance of flatfish in the hatchery and subsequently post release …
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Sex determination in southern flounder, Paralichthys lethostigma from the Texas Gulf Coast and implications of climate change
In marine flatfish of the genus Paralichthys, temperature plays a large role in sex determination. Thus, global climate change could have significant effects on southern flounder (Paralichthys lethostigma), a commercially and recreationally important flatfish whose populations have steadily …
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UK fisheries, climate change and North Sea fishes: a long-term perspective
… and unbiased survey data. Whiting, compared to flatfish, is of secondary commercial importance. In areas where discrepancies occurred between commercial and survey data, higher discarding of whiting is suggested, as highly priced flatfish are caught there. This thesis demonstrates past …
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A Zooarchaeological Analysis of the Monashka Bay Site (KOD-026) Kodiak Island, Alaska
… modest amounts of sculpin, and small amounts of flatfish, salmon, herring, bird, and sea mammal. The predominance of cod is likewise seen at other Koniag-era sites in the vicinity, though the lack of salmon, which composed 2% of fish remains identified to order or better, is unique to Monashka …
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Growth and Reproduction of Southern Flounder (<i>Paralichthys lethostigma</i>) in the North-Central Gulf of Mexico
… lethostigma</em> is the most commonly harvested flatfish in the north-central Gulf of Mexico (GOM) and supports a major inshore recreational fishery, yet knowledge of the species’ life history is greatly limited. The objective of this research was to describe the growth and reproduction of …
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Automating Video Analysis for Marine and Behavioural Research: Deep Learning Solutions to Analytical Bottlenecks
… (mAP = 0.896 ± 0.009) and Pleuronectiformes “flatfish” (mAP = 0.814 ± 0.009) – replacing human analysts in MaxN estimation (the maximum individuals observed in a single frame). The automated pipeline also enabled investigation of stereo-vision revealing that combining viewpoints from …
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Studies on the nutrition and metabolism of turbot (Scophthalmus maximus L) with reference to fish farming
… fish. A detailed study of previous research on flatfish nutrition, identified fresh fish, sprat in particular, as the optimum diet for turbot farming. A series of experiments was undertaken that confirmed this and also identified one possible explanation for the optimum performance of sprat, as …
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Identification of genetic markers associated with growth and morphology quality in senegalese sole (solea senegalensis) to boost aquaculture production
… (Solea senegalensis) is one of the most valuable flatfish in aquaculture in Southern Europe and although the production has grown exponentially in the last decade, reproduction success, health status, and the improvement of growth rates and morphology quality still remain as important limitations …
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The Response of a Predatory Fish, Ophiodon elongatus, to a Marine Protected Area: Variation in Diet, Catch Rates, and Size Composition
… most common prey items (rockfish, anchovies, flatfish, and octopus) for nutritional content. My data suggest that Lingcod increased in size and abundance in a no-take MPA because they do not suffer from fishing mortality. However, a more nutritious diet could also contribute to a biologically …
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Bioaccumulation of persistent organic pollutants and trace metals in Scottish marine food webs and their relationship with trophic level and fatty acid signatures.
… in biota include specific shellfish, flatfish and roundfish, as well as seabird eggs. Extending the assessment to other species has considerable merit, but such species may, for example, be more difficult to sample, with generic trophic level values obtained from literature and …
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Genetic and molecular factors regulating growth and morphology in Senegalese sole (Solea senegalensis)
… farmed species. This is especially relevant in flatfish, where the specific morphology of each specie is a distinctive factor for consumers. Both traits, growth and morphology, are complex trait regulated by genetic factors, phenotypic plasticity, and other life cycle aspects, such as …
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Structural, molecular and functional characterisation of visual photoreceptors and opsins in sole: an ontogenetic, chronobiological and environmental approach
La metamorfosis de los peces planos está acompañada de cambios drásticos, que determinan una reorganización total del cuerpo, una remodelación cráneo-facial y la migración de los ojos hacia el lado ocular superior, que transforma a las larvas simétricas en juveniles asimétricos. Durante la …