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- Strongylocentrotus purpuratus (2)
- Biogeography (1)
- Chromosomal localization (1)
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- Dating (1)
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Articles 1 - 7 of 7
Full-Text Articles in Developmental Biology
Methods For Karyotyping And For Localization Of Developmentally Relevant Genes On The Chromosomes Of The Purple Sea Urchin Strongylocentrotus Purpuratus, Celeste C. Eno, Stefanie A. Boettger, Charles W. Walker
Methods For Karyotyping And For Localization Of Developmentally Relevant Genes On The Chromosomes Of The Purple Sea Urchin Strongylocentrotus Purpuratus, Celeste C. Eno, Stefanie A. Boettger, Charles W. Walker
Biology Faculty Publications
No abstract provided.
Dissolved Organic Matter Influences The Timing Of Embryonic Development Of The Purple Sea Urchin, Strongylocentrotus Purpuratus., Corbin J. Hodges
Dissolved Organic Matter Influences The Timing Of Embryonic Development Of The Purple Sea Urchin, Strongylocentrotus Purpuratus., Corbin J. Hodges
Master's Theses
Marine dissolved organic matter (DOM) comprises one of the largest carbon reservoirs on earth and has long been considered a potential energy source for marine invertebrates. The importance of DOM transport has been adequately demonstrated for unicellular organisms, where DOM can meet 100% of an organisms energy needs, but the effects of DOM uptake for marine metazoans are less well understood. In this study, three general areas involving the influence of DOM transport to marine invertebrates were explored. First, we assessed the effects of using seawater exposed to high intensity ultraviolet radiation (UVR) on the study organism; embryos of the …
Phylogeography Of The Frog Leptodactylus Validus (Amphibia: Anura): Patterns And Timing Of Colonization Events In The Lesser Antilles, Arley Camargo, W. Ronald Heyer, Rafael O. De Sá
Phylogeography Of The Frog Leptodactylus Validus (Amphibia: Anura): Patterns And Timing Of Colonization Events In The Lesser Antilles, Arley Camargo, W. Ronald Heyer, Rafael O. De Sá
Biology Faculty Publications
The frog Leptodactylus validus occurs in northern South America, Trinidad and Tobago, and the southern Lesser Antilles (Grenada and St. Vincent). Mitochondrial DNA sequences were used to perform a nested clade phylogeographic analysis (NCPA), to date colonization events, and to analyze colonization patterns using on a relaxed molecular clock and coalescent simulations. L. validus originated on the mainland and first colonized Trinidad with subsequent independent colonizations of Tobago and the Lesser Antilles from Trinidad. The NCPA suggests a historical vicariant event between populations in Trinidad and Tobago from those in the Lesser Antilles. The colonization of Trinidad occurred 1 million …
In Vivo Analysis Of The Notch Receptor S1 Cleavage, Robert J. Lake, Lisa M. Grimm, Alexey Veraksa, Spyros Artavanis-Tsakonas
In Vivo Analysis Of The Notch Receptor S1 Cleavage, Robert J. Lake, Lisa M. Grimm, Alexey Veraksa, Spyros Artavanis-Tsakonas
Biology Faculty Publication Series
A ligand-independent cleavage (S1) in the extracellular domain of the mammalian Notch receptor results in what is considered to be the canonical heterodimeric form of Notch on the cell surface. The in vivo consequences and significance of this cleavage on Drosophila Notch signaling remain unclear and contradictory. We determined the cleavage site in Drosophila and examined its in vivo function by a transgenic analysis of receptors that cannot be cleaved. Our results demonstrate a correlation between loss of cleavage and loss of in vivo function of the Notch receptor, supporting the notion that S1 cleavage is an in vivo mechanism …
Exposure To Ultraviolet Radiation Causes Proteomic Changes In Embryos Of The Purple Sea Urchin, Strongylocentrotus Purpuratus, Joseph Paul Campanale
Exposure To Ultraviolet Radiation Causes Proteomic Changes In Embryos Of The Purple Sea Urchin, Strongylocentrotus Purpuratus, Joseph Paul Campanale
Master's Theses
The amount of solar ultraviolet radiation (UVR, 290-400 nm) reaching Earth’s surface is increasing due to ozone depletion and global climate change. Embryos of the purple sea urchin, Strongylocentrotus purpuratus, provide an ideal system for examining how UVR affects developing marine organisms and cells in general. To model the protein-mediated cell cycle response to UV-irradiation, six batches of S. purpuratus embryos were exposed to UVR, monitored for delays in the first mitotic division and examined for global proteomic changes. Embryos from each batch were exposed to or protected from artificial UVR for 25 or 60 min. Embryos treated with …
Hydrodynamics Of Pulsed Jetting In Juvenile And Adult Brief Squid Lolliguncula Brevis: Evidence Of Multiple Jet 'Modes' And Their Implications For Propulsive Efficiency, Ian K. Bartol, Paul S. Krueger, William J. Stewart, Joseph T. Thompson
Hydrodynamics Of Pulsed Jetting In Juvenile And Adult Brief Squid Lolliguncula Brevis: Evidence Of Multiple Jet 'Modes' And Their Implications For Propulsive Efficiency, Ian K. Bartol, Paul S. Krueger, William J. Stewart, Joseph T. Thompson
Biological Sciences Faculty Publications
The dynamics of pulsed jetting in squids throughout ontogeny is not well understood, especially with regard to the development of vortex rings, which are common features of mechanically generated jet pulses (also known as starting jets). Studies of mechanically generated starting jets have revealed a limiting principle for vortex ring formation characterized in terms of a 'formation number' (F), which delineates the transition between the formation of isolated vortex rings and vortex rings that have 'pinched off' from the generating jet. Near F, there exists an optimum in pulse-averaged thrust with (potentially) low energetic cost, raising the question: do …
In Vitro Guidance Of Retinal Axons By A Tectal Lamina-Specific Glycoprotein Nel, Yulan Jiang, Hiroya Obama, Soh-Leh Kuan, Ritsuko Nakamura, Chizu Nakamoto, Zhufeng Ouyang, Masaru Nakamoto
In Vitro Guidance Of Retinal Axons By A Tectal Lamina-Specific Glycoprotein Nel, Yulan Jiang, Hiroya Obama, Soh-Leh Kuan, Ritsuko Nakamura, Chizu Nakamoto, Zhufeng Ouyang, Masaru Nakamoto
Biology Faculty Publications
Nel is a glycoprotein containing five chordin-like and six epidermal growth factor-like domains and is strongly expressed in the nervous system. In this study, we have examined expression patterns and in vitro functions of Nel in the chicken retinotectal system. We have found that in the developing tectum, expression of Nel is localized in specific laminae that retinal axons normally do not enter, including the border between the retinorecipient and non-retinorecipient laminae. Nel-binding activity is detected on retinal axons both in vivo and in vitro, suggesting that retinal axons express a receptor for Nel. In vitro, Nel inhibits retinal axon …