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 15 of 15 for “"Bivalve molluscs"”.
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Life history traits and population processes in marine bivalve molluscs
… I surveyed the literature on a variety of bivalve species. By incorporating information on growth, survival, and reproduction into matrix population models I could evaluate the relative contributions of these factors to fitness. For broadcast-spawners, long life is an important factor …
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Life history traits and population processes in marine bivalve molluscs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1998.
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Bivalve molluscs as environmental monitors and tools for sustainable water management
… and the human populations that rely upon them. Bivalve molluscs offer particular promise for the biomonitoring of aquatic systems. This thesis seeks to progress understanding and enable wider study of prominent means by which bivalves can, or may yet, provide insights into their environments. …
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Effects of Particle Surface Properties on Feeding Selectivity in Suspension-Feeding Bivalve Molluscs
<p> <p>The mechanisms by which bivalve molluscs differentiate particles are not clearly understood, and the surface properties of a particle have been proposed as factors that contribute to particle selection. The effects of surface properties upon selection by suspension-feeding bivalves were …
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Design & application of novel methods of analysis for monitoring marine biotoxins
… by algae that may accumulate in filter feeding bivalve molluscs and seafood and are classified according to their symptomatic characteristics displayed in humans and mammals following consumption. Due to the severity in potency key marine biotoxins are regulated through CODEX Alimentaris …
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Growth Lines in CHIONE FLUCTIFRAGA and PROTHACA STAMINEA (Bivalvia): Precision of Counting and Comparisons of Size, Age, Intertidal Location and Taxa
… formation of growth lines in the shells of bivalve molluscs is affected by environmental parameters, the growth lines should contain much information about the environments in which the animals live. However, the use of growth lines in ecology· and paleontology is limited by ambiguity in …
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Organismi acquatici e ambiente: meccanismi biochimici di interazione, risposta e adattamento
… membranes from tissues of cultured marine bivalve molluscs and potentially stressful environmental conditions, such as the exposure to contaminants both of natural origin (ammonia nitrogen, the main contaminant of aquaculture plants) and of anthropic source (alkyltins). The two …
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Spatial Distribution and Stock-Recruitment Analysis of the Atlantic Surfclam, <i>Spisula solidissima</i>, in the Mid-Atlantic Bight and on Georges Bank
… <em>Spisula solidissima</em>, are long-lived bivalve molluscs with dispersive larval stages. Surfclam patchiness throughout the U.S. Exclusive Economic Zone (EEZ) has declined from the 1980’s to the present in all assessed regions (Delmarva, New Jersey, Long Island, Southern New England, and …
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Organolead Compounds in Natural Systems
… of these compounds in natural systems, such as bivalve molluscs. These animals are an essential part of the diet of coastal birds and may have accumulated alkyllead to concentrations that were acutely toxic to the birds. Data reported in this thesis indicate the approximate concentrations of the …
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Lipoproteins and heat shock proteins as measures of reproductive physiology in the soft shell clam, Mya arenaria
… is an important physiological process in marine bivalve molluscs. Experiments were designed to examine the role of lipoproteins and heat shock proteins in normal physiological processes of the soft shell clam, Mya arenaria, including reproduction. The distribution of 14c triolein, an injected …
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Urban marine bivalve aquaculture: A pathway to enhancing global food security
… and key micronutrients is crucial and marine bivalve molluscs offer an especially attractive solution for delivering this need. However, high quality marine coastal ecosystems, which are required for bivalve spawning and production, are falling under increasing pressures, which include climate …
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Selected molluscs as monitors of metal pollution in coastal marine environments
The potential of bivalve molluscs as monitors of metal pollution in South African coastal marine environments has been investigated using the species Crassostrea gigas, Crassostrea margaritacea, Perna perna and Choromytilus meridionalis. Metal concentrations in these and other species living along …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… and contributes towards poor animal welfare. For molluscs, widespread mass-mortalities of Pacific oysters (Magallana gigas) have occurred in recent years linked to infection with the bacterial pathogen Vibrio aestuarianus. Disease in farmed oysters is difficult to prevent or to treat and, in this …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… and contributes towards poor animal welfare. For molluscs, widespread mass-mortalities of Pacific oysters (Magallana gigas) have occurred in recent years linked to infection with the bacterial pathogen Vibrio aestuarianus. Disease in farmed oysters is difficult to prevent or to treat and, in this …
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Studies on Paphies australis (Mesodesmatidae) in Whangārei, Aotearoa New Zealand: an investigation into their declining health.
… diseases and opportunistic infections. Wild bivalve molluscs provide economic, ecological, and socio-cultural benefits. Healthy and sustainable kaimoana (shellfish/bivalves, seafood) are intrinsically linked to the wellbeing of many communities in New Zealand. Over the past decade there has …