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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 20 of 23 for “"Anemones"”.
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The effects of anticholinergic drugs on sea anemones
The first proof of the chemical mediation of nerve impulses by the peripheral release of specific chemicals was made by Loewi (1921). He demonstrated that during stimulation of the vagus nerve leading to an excised frog’s heart (Figure 1) a chemical mediator that he called Vagus-substance was …
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Screening for fluorescent and chromoproteins from South African sea anemones
Sea anemones (Order Actinaria) are a diverse order from the Class Anthozoa. They are found in all marine habitats at all depths and their symbiotic relationships play an important role in energy transfers especially in the benthic-pelagic community. The evolutionary background and phylogenetics of …
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Feeding biology of intertidal sea anemones in the south-western Cape
The species composition, abundance and distribution of intertidal sea anemone assemblages were investigated by means of line-transects at two sites on the Cape Peninsula - Wooley's Pool in False Bay and Blouberg in Table Bay. A single species, Bunodactis reynaudi dominated at Blouberg (average …
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Genetic connectivity, adaptation, and phenotypic plasticity of corals and anemones under thermal stress
… This thesis aims to understand how corals and anemones respond to changing temperatures across different timescales and investigates mechanisms that can facilitate persistence in light of environmental change, from selection and adaptation across generations to phenotypic plasticity within a …
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Genetic connectivity, adaptation, and phenotypic plasticity of corals and anemones under thermal stress
… This thesis aims to understand how corals and anemones respond to changing temperatures across different timescales and investigates mechanisms that can facilitate persistence in light of environmental change, from selection and adaptation across generations to phenotypic plasticity within a …
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Ultraviolet Radiation and Carotenoid Pigmentation in Symbiotic Anthozoans
… on the pigmentation of bleached and unbleached anemones. This experiment ran for 38 days and bleached and unbleached anemones were exposed to one of three light treatments: high PAR and high UVA; high PAR and low UVA; and low PAR and no UVA.</p> <p>Carotenoids positively identified in <em>A. …
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ΒΙΟΝΟΜΙΚΗ ΜΕΛΕΤΗ ΤΩΝ ΘΑΛΑΣΣΙΩΝ ΑΝΕΜΩΝΩΝ (ACTINIARIA, ANTHOZOA) ΤΟΥ ΘΕΡΜΑΙΚΟΥ ΚΟΛΠΟΥ
… GULF REVEALED THE PRESENCE OF 15 SPECIESOF SEA ANEMONES. NINE OF THE FIFTEEN SPECIES FOUND, ARE REPORTED FOR THE FIRSTTIME FROM THE EASTERN MEDITERRANEAN AND ONE FROM THE AEGEAN SEA. ACCORDING TO THE SELECTIVE PREFERENCE SHOWED BY THE VARIOUS ANEMONE SPECIES TO VARIOUS TYPESOF SUBSTRATES, THEY …
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Multi-component chemical defense in seahares (Gastropoda:Opisthobranchia): antipredator compounds act as both honest and deceptive signals to multiple predator species
… had a significant survival advantage against sea anemones, crabs, and lobsters, but not against fishes. Isolated secretions and their components were used to explore mechanisms of defense against sea anemones and lobsters. A 60 kDa glycoprotein from ink was isolated, cloned, sequenced, and …
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CRSPR manipulation and nutritional status reveal functions of transcription factor NF-kappaB in the sea anemone Nematostella vectensis
… expression profiling of adult fed and starved anemones showed that starvation led to the downregulation of many genes involved in nutrient metabolism, cellular respiration, and immune and defense responses. Starved adult anemones also had reduced protein levels and DNA-binding activity of …
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Doctoral thesis recital (collaborative piano)
… and piano, op.34 / Charles-Marie Widor -- Black anemones / Joseph Schwantner -- Sonata no.3 for violin and piano in C minor, op.45 / Edvard Grieg.
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Estudo sistemático de duas espécies de Acontiaria (Cnidaria, Anthozoa, Actiniaria) da Baía de Guanabara, Rio de Janeiro, Brasil
Two species of sea anemones (Cnidaria, Anthozoa, Actiniaria) from Guanabara Bay, Rio de Janeiro, Brazil, were studied. They are both from the subtribe Acontiaria Carlgren (in Stephenson, 1935). These anemones are Haliplanella lineata (Verrill, 1869) and a new genus, new species, both of the family …
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Neue integrative Ansätze für das Sammeln, Bearbeiten und Beschreiben skelettloser Hexacorallia am Beispiel chilenischer Seeanemonen
… dissertation and exemplified by Chilean sea anemones. The results have been presented in specialist journals and at relevant meetings. To fill existing gaps and to alleviate difficulties, traditional procedures have been combined with modern methods. The applied techniques were tested for …
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Nemo no more? Spatial demographic and population genetic analyses of the two-band anemonefish, Amphiprion bicinctus, in the Gulf of Eilat, Red Sea
Anemonefishes' obligatory mutualism with sea anemones dictates their occurrence on coral reefs. I examined spatial distribution, settlement, habitat usage, and survival patterns of the two-band anemonefish, Amphiprion bicinctus. In a 300 X 30 m study site off the coast of Israel in the Gulf of …
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The Roles of Ca2+ and cAMP in the Nematocyst Discharge of the Sea Anemone Tentacle
… aquatic animals, including jellyfish, hydra, sea anemones, and corals. They are the simplest metazoans having a nervous system and are diploblastic. Cnidarians are obligate predators that capture prey using specialized stinging cells called cnidocytes. The cnidocyte contains a nematocyst, which is …
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Multisector Mitigation of Plastic Pollution: Approaches from Biology, Policy, Law and Industry
… the sea anemone as a model animal. I find that anemones readily consume plastic (polyethylene and polyvinyl chloride) pellets and can extract metallic additives, specifically lead and tin, from plastic. More broadly, this research suggests that plastic pollution may be a novel pathway for heavy …
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Characterisation of Nitric Oxide Synthase Activity in the Sea Anemone Aiptasia pallida and an Evaluation of Responses to Environmental Stress
… in terms of per unit protein, were increased in anemones exposed to temperatures of > 31 °C. NOS and FRAP activities expressed on a per anemone basis showed no clear change over the experimental period despite the substantial declines in host protein noted in anemones over the experimental …
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SENSITIVITY AND RESILIENCE OF CNIDARIAN EARLY LIFE PROCESSES TO ANTHROPOGENIC CLIMATE CHANGE
… populations of cnidarians (e.g., corals and sea anemones) on a global scale over recent decades. Conserving and restoring cnidarian populations requires a thorough understanding of these species’ early life processes (i.e., reproduction and development), yet we lack foundational knowledge in this …
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Geology of the Flathead Formation (Middle Cambrian) on the perimeter of the Bighorn Basin, Beartooth Mountains, and Little Belt Mountains in Wyoming and Montana
… in a cone-in-cone fashion were formed by anemones moving upwards in their dwelling tubes. Inarticulate brachiopods are present in the upper interval in some places. The brachiopods, which are the first to be identified in the formation belong to three genera. </p><p> Comparison of the …
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HISTOLOGICAL RESPONSES OF THE SEA ANEMONE A. PALLIDA TO BLEACHING INDUCING STRESSES
… survived the stress progressively repopulated anemones. Further experiments showed that, following bleaching, a small fraction of the newly produced ectodermal cells migrate to the gastrodermis. Along with new gastrodermal cells, they most probably operate a regeneration of the wounded tissue, …
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Biological adhesion in wet environments: adaptations and mechanisms
… marine invertebrates, such as sea stars, sea anemones, and flatworms. In Chapters 5 and 6, I study the physical and chemical properties of sticky secretions from carnivorous pitcher plants (Nepenthes) that help to capture, retain, and digest insects. I show that the viscoelastic pitcher fluid …
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