Global ETD Search
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Showing 1 to 8 of 8 for “"tunicates"”.
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Biologically active compounds from tunicates and a sponge
Part I. Studies on structures and biological activities of didemnins. Six new cyclic depsipeptides related to didemnins were isolated from a relatively polar extract of the tunicate T. solidum. Their structures were determined by spectroscopic techniques and chemical degradations as follows: …
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Form, function and flow in the plankton : jet propulsion and filtration by pelagic tunicates
Trade-offs between filtration rate and swimming performance among several salp species with distinct morphologies and swimming styles were compared. Small-scale particle encounter at the salp filtering apparatus was also explored. Observations and experiments were conducted at the Liquid Jungle …
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Form, function and flow in the plankton : jet propulsion and filtration by pelagic tunicates
Trade-offs between filtration rate and swimming performance among several salp species with distinct morphologies and swimming styles were compared. Small-scale particle encounter at the salp filtering apparatus was also explored. Observations and experiments were conducted at the Liquid Jungle …
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Climate change and invasive species interact to impact succession and diversity in Gulf of Maine marine fouling communities
… is predicted to decline; concurrently invasive tunicates (ascidians) became conspicuous members of fouling communities. These abiotic and biotic changes may lead to shifts in species composition, diversity and succession. The goals of these studies were to examine the relationship between …
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Fauna de Amphipoda (Crustacea) associada à esponja Dysidea sp. em Arraial do Cabo, RJ - taxonomia e composição da comunidade
… which is commonly inquiline in sponges and tunicates, and Podocerus brasiliensis (Dana, 1853), which is frequently found clinging to various substrates forming aglomerates. The dry weight and volume of sponges however, did not evidence the above groups. Biological factors from the amphipod …
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CHARACTERIZATION OF THE EUKARYOTIC TRANSLATION INITIATION FACTOR 4E (eIF4E) FAMILY MEMBERS IN THE ZEBRAFISH (Danio rerio)
… eIF4Es. Early deuterostomes such as sea urchins, tunicates, and lancelets have only one from each class; eIF4E-1, eIF4E-2 and eIF4E-3. The distribution of the subclasses of eIF4E-1 is consistent with the duplication of Class I prior to the teleost specific whole genome duplication, probably at one …
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Geographic and Host-Microbe Symbiotic Influence on Secondary Metabolism
… the world including plants, insects, sponges, tunicates, bacteria, and fungi among others. Many macroorganisms, of which the metabolites are found, depend on the symbiotic relationship of microorganisms for metabolite production. The scope of this work is to investigate secondary metabolism of …
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DEVELOPMENT OF THE LARVAL PERIPHERAL NERVOUS SYSTEM IN THE ASCIDIAN CIONA INTESTINALIS: ROLE OF THE RETINOIC ACID AND FGF/WNT SIGNALLING PATHWAYS AND OF THE POU TRANSCRIPTION FACTORS.
… family in its differentiation. Within chordates, tunicates represent the sister group of vertebrates and their larvae have a typical chordate body plan. Notably, larval nervous system is formed by few cells whose organization mirrors that of vertebrates. For these reasons the species C. …