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Thermal Influences On Gene Expression In The Intertidal Porcelain Crab Petrolisthes Cinctipes
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Book Synopsis Thermal Influences on Gene Expression in the Intertidal Porcelain Crab Petrolisthes Cinctipes by : Eric William Galassi
Download or read book Thermal Influences on Gene Expression in the Intertidal Porcelain Crab Petrolisthes Cinctipes written by Eric William Galassi and published by . This book was released on 2008 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response to Heat Stress in the Porcelain Crab Petrolisthes Cinctipes by : Kristen S. Teranishi
Download or read book Response to Heat Stress in the Porcelain Crab Petrolisthes Cinctipes written by Kristen S. Teranishi and published by . This book was released on 2006 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fine Scale Genetic Structure, Dispersal, and Variable Recruitment in the Flat Porcelain Crab, Petrolisthes Cinctipes, Along the Northern California Coast by : Chris D. Griesemer
Download or read book Fine Scale Genetic Structure, Dispersal, and Variable Recruitment in the Flat Porcelain Crab, Petrolisthes Cinctipes, Along the Northern California Coast written by Chris D. Griesemer and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of increasingly affordable next-generation sequencing technologies are key to understanding the role dispersal, drift and selection play in producing signals of population divergence in many marine species. In particular, dispersal has been difficult to track in the oceans, obscuring its contributions to population structure. The dispersing larval phase of the flat porcelain crab, Petrolisthes cinctipes, exhibits behaviors that likely restrict its along-shore displacement despite a rather long development time at sea. In this work, I attempted to resolve previously detected chaotic patterns among P. cinctipes populations with a published Bayesian model showing that a substantial proportion of larvae likely recruit back to their natal populations. I used a large SNP (single nucleotide polymorphism) dataset to (1) analyze 159 adult crabs from 15 populations for patterns of genetic divergence and (2) directly assign 71 returning larvae back to their population of origin. Admixture results and discriminant analysis of principal components showed a strong signal of panmixia across northern California, making larval assignment impractical. Markers putatively under selection revealed the only clear break in the sampling range—between the southernmost population (just south of San Francisco Bay) and the remaining populations to the north. Despite this panmixia, P. cinctipes population genetics is also characterized by weak chaotic patterns, where populations at close proximity may be more diverged than those separated by hundreds of kilometers. Furthermore, we have previous evidence that such patterns change year-to-year. Underlying this phenomenon might be finer-structured processes that produce weak and ephemeral signals of divergence. A handful of recent studies have shown that cohesive dispersal of related individuals may provide a mechanism for generating such signals. I test for the possibility that cohesive dispersal of related larvae may contribute to observed chaotic patterns in Petrolisthes cinctipes because larval crabs exhibit clustered association with conspecifics throughout their dispersal, settling onshore gregariously in age-unified cohorts. These aspects of its life history point to the possibility of long-term kin association. Using a bank of 1,268 SNPs, I characterized the pairwise relatedness between individuals as well as within-group average relatedness of five settling cohorts of post-larvae collected in 2014. No pair exhibited relatedness greater than would be expected among non-relatives, and group relatedness measurements did not differ significantly from zero. It may be that P. cinctipes larvae are unable to maintain cohesion due to the extreme turbulence of the nearshore and surfzone environments. These same barriers to cohesive delivery of siblings may also be key to our understanding of variation in recruitment in this shore crab. In the course of my genetic sampling efforts among 14 sites across three years, I uncovered a pattern of little to no recruitment in a 100 km section of the Sonoma-Mendocino County coastline. This “recruitment gap” persisted for the years 2012 and 2013, disappearing in 2014 and leading me to wonder what might have driven the spatiotemporal variation. I measured a number of potential drivers at each site, obtained regional and basin-scale indices thought to relate to variation in recruitment. All predictor variables were used in a regression tree analysis that indicated local effects of surfzone width and the proportion of each site’s exposure to northwest compass direction. The temporal variation among years was attributed to patterns of relatively high temperature in 2014, though this result is confounded by the limitations of only three years of data. Despite the clear implication of site-level variables as drivers of the recruitment patterns, I discuss the results in the context possible influences across spatial and temporal scales, and highlight the ways in which knowledge of porcelain crab biology enriches our ability to infer a recruitment variability narrative in this system.
Book Synopsis Genetic Analysis of Recruitment and Dispersal Patterns in the Porcelain Shore Crab, Petrolisthes Cinctipes by : Robert John Toonen
Download or read book Genetic Analysis of Recruitment and Dispersal Patterns in the Porcelain Shore Crab, Petrolisthes Cinctipes written by Robert John Toonen and published by . This book was released on 2001 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cardiac Transcriptome Responses to Heat Stress in the Porcelain Crab, Petrolisthes Cinctipes by : Claudia Patricia Ramos
Download or read book Cardiac Transcriptome Responses to Heat Stress in the Porcelain Crab, Petrolisthes Cinctipes written by Claudia Patricia Ramos and published by . This book was released on 2013 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Responses in Aquatic Organisms Adapted to Extreme or Changing Environments by : Alexssandro Geferson Becker
Download or read book Physiological Responses in Aquatic Organisms Adapted to Extreme or Changing Environments written by Alexssandro Geferson Becker and published by Frontiers Media SA. This book was released on 2022-03-29 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing the Zonation of Two Intertidal Porcelain Crabs: Petrolisthes Cinctipes and P. Eriomerus (Anomura: Porcellanidae). by : David Zittin
Download or read book Factors Influencing the Zonation of Two Intertidal Porcelain Crabs: Petrolisthes Cinctipes and P. Eriomerus (Anomura: Porcellanidae). written by David Zittin and published by . This book was released on 1973 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developmental Effects of Ocean Acidification on the Porcelain Crab Petrolisthes Cinctipes by : Lina Ceballos-Osuna
Download or read book Developmental Effects of Ocean Acidification on the Porcelain Crab Petrolisthes Cinctipes written by Lina Ceballos-Osuna and published by . This book was released on 2012 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Effects of Ocean Acidification on Early Life Stages of Porcelain Crab Petrolisthes Cinctipes by : Hayley Anne Carter
Download or read book Physiological Effects of Ocean Acidification on Early Life Stages of Porcelain Crab Petrolisthes Cinctipes written by Hayley Anne Carter and published by . This book was released on 2012 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Marine Genomics by : J. Mark Cock
Download or read book Introduction to Marine Genomics written by J. Mark Cock and published by Springer Science & Business Media. This book was released on 2010-04-27 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine biology has always played an important role in biological research, being at the origin of many key advances. To a certain extent, the influence of marine biology on the biological sciences was overshadowed over a period of several years by the remarkable advances that were made using powerful model organisms from terrestrial environments. This situation is now changing again, however, due primarily to spectacular developments in genomic methodologies that have significantly accelerated research in a broad spectrum of marine biology disciplines ranging from biodiversity to developmental biology to biotechnology. The data generated by marine genomics projects have had an impact on questions as diverse as understanding planetary geochemical cycles, the impact of climate change on marine fauna and flora, the functioning of marine ecosystems, the discovery of new organisms and novel biomolecules, and investigation of the evolution of animal developmental complexity. This book represents the first attempt to document how genomic technologies are revolutionising these diverse domains of marine biology. Each chapter of this book looks at how these technologies are being employed in a specific domain of marine research and provides a summary of the major results obtained to date. The book as a whole provides an overview of marine genomics as a discipline and represents an ideal starting point for exploring this rapidly developing domain.
Book Synopsis A Comparative Analysis of Morphological, Physiological, and Biochemical Adaptation to Abiotic Stress in Intertidal Porcelain Crabs, Genus Petrolisthes by : Jonathon Harris Stillman
Download or read book A Comparative Analysis of Morphological, Physiological, and Biochemical Adaptation to Abiotic Stress in Intertidal Porcelain Crabs, Genus Petrolisthes written by Jonathon Harris Stillman and published by . This book was released on 1999 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organismal tolerance to abiotic environmental stresses contributes significantly to setting the distribution limits of organisms, as demonstrated by vertical zonation patterns in the marine intertidal zone. In this thesis, the ultimate (evolutionary) and proximate (mechanistic) causes of tolerance to temperature and emersion stresses associated with the intertidal zone were examined using porcelain crabs, genus Petrolisthes. Species of Petrolisthes from intertidal and subtidal microhabitats of four biogeographic regions of the Eastern Pacific were used in phylogenetically-based comparative analyses of morphological, physiological, and biochemical adaptation to environmental stress. A phylogenetic tree based on the sequence of the 16sRNA gene was developed to facilitate these analyses. Organismal thermal tolerance limits are adapted to match maximal microhabitat temperatures. Acclimation of thermal tolerance limits suggests that temperate intertidal zone species are living close to their thermal maximum in nature. Respiratory responses to emersion vary among species from different vertical zones. Experimental examination of oxygen consumption rates and lactate accumulation during emersion suggests that intertidal species are able to respire in air using thin membranous regions on the ventral meral segments of their legs (leg membranes). Leg membrane size is positively correlated with body size across species, but not within a single species. Evolutionary analyses indicate that leg membranes may not have evolved for purposes of aerial respiration, but their presence may have allowed intertidal and subtidal species to achieve larger body sizes and higher metabolic rates. The thermal stabilities of an enzyme, lactate dehydrogenase (LDH), from 22 species of Petrolisthes varied widely, but were not correlated with maximal habitat temperatures. Comparative analyses did not indicate any evolutionary relationship between LDH thermal stability and microhabitat conditions. Experimental evidence suggests that interspecific differences in LDH stability are genetically based, and are due both to intrinsic properties of the LDH molecules and extrinsic protein stabilizers. Elucidation of the mechanism(s) of LDH stabilization in Petrolisthes may provide novel insight to the field of protein stabilization. These results studies suggest that individual traits may be subjected to differing levels of selection, and thus the analysis of environmental adaptation requires careful consideration of the biological significance of the traits being examined.
Book Synopsis Populations of the Green Porcelain Crab, Petrolisthes Armatus, Vary in Cold Tolerance Within the Species' Northernmost Invaded Range by : Kevin Mack
Download or read book Populations of the Green Porcelain Crab, Petrolisthes Armatus, Vary in Cold Tolerance Within the Species' Northernmost Invaded Range written by Kevin Mack and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The green porcelain crab, Petrolisthes armatus, is a highly abundant invader of intertidal oyster reef habitats in Atlantic waters of the southeastern US. Cold water temperatures likely limit the species' poleward range, which is predicted to shift as water temperatures rise. I established five study locations along the species' poleward expansion front from Savannah, GA (Skidaway Island) to Wilmington, NC. Trends in P. armatus populations and resident crab assemblages were assessed seasonally at each location, and live crabs were collected for cold tolerance incubation trials. The taxonomic composition of crab assemblages differed between locations within each season, with obvious dissimilarities between northern and southern locations in the summer and fall, primarily driven by differences in P. armatus abundance. Abundances were highest in the summer and decreased from southern to northern locations. Sex ratios varied seasonally; becoming male biased in the fall. Adult-sized crabs were collected in the spring, indicating that overwintering of adults does occur. Chronic cold temperature trials were conducted seasonally to expose crabs from each location to decreasing water temperatures and assess sublethal and lethal effects. Crabs from northern locations were more tolerant of cold water temperatures in the fall, possibly due to increased acclimatization plasticity present in individuals from northern populations in response to a comparatively colder environment. Females were more tolerant than males in the summer and spring, possibly due to differences in male and female reproductive stressors. Smaller crabs were more tolerant than larger crabs regardless of season indicating molt cycle may play a role in cold tolerance. Given the trend of warming ocean waters, which may move thermal barriers to P. armatus range expansion to higher latitudes, and apparent higher cold tolerance in poleward populations, there is potential that this species will continue its poleward range expansion.
Book Synopsis Identification of Protein Interactions with Lactate Dehydrogenase in Porcelain Crab Petrolisthes Cinctipes by : Andrea Patrice Cayenne
Download or read book Identification of Protein Interactions with Lactate Dehydrogenase in Porcelain Crab Petrolisthes Cinctipes written by Andrea Patrice Cayenne and published by . This book was released on 2010 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Vertical Zonation by : Jennifer M. Schmitt
Download or read book The Influence of Vertical Zonation written by Jennifer M. Schmitt and published by . This book was released on 2002 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Directions in Ecological Physiology by : Martin E. Feder
Download or read book New Directions in Ecological Physiology written by Martin E. Feder and published by Cambridge University Press. This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1988 book outlines conceptual approaches to the study of physiological adaptation in animals.
Book Synopsis Effects of Temperature on Ectothermic Organisms by : Wolfgang Wieser
Download or read book Effects of Temperature on Ectothermic Organisms written by Wolfgang Wieser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of thermoregulation in endotherms has contributed much to the emergence of the concept of control theory in biology. By the same token, the study of tempera ture adjustment in ectotherms is likely to have a far-reaching influence on ideas on the regulation of metabolism in general. The reason for this is that ectotherms, in adapting to the vagaries of a thermally unstable environment, deploy a range of subtle molecular and organismic strategies. Thus the experimenter, using temperature changes as a tool, is well equipped to analyze some of these strategies. This approach has enabled some important mechanisms of temperature-induced adaptation to be elucidated; the most striking of these are the effects on metabolism of changes in the conformation of enzymes and the transfer properties of membranes. Furthermore, there is a vague but persistent feeling among those working in this field that changes in the nervous system will ultimately prove to be the agency by which many of the molecular mechanisms of temperature adaptation are controlled. Should this indeed be the case, a new phase would soon begin in our understanding of the interactions between the systemic and the cellular levels of organization. However, it is not only questions about the causes of temperature adaptation that can provide answers of potential importance to the general biologist; of equal significance are questions as to the meaning of temperature adaptation in a particular organism.
Book Synopsis Temperature Biology of Animals by : Andrew Cossins
Download or read book Temperature Biology of Animals written by Andrew Cossins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature is one facet in the mosaic of physical and biotic factors that describes the niche of an animal. Ofthe physical factors it is ecologically the most important. for it is a factor that is all-pervasive and one that. in most environments. lacks spatial or temporal constancy. Evolution has produced a wide variety of adaptive strategies and tactics to exploit or deal with this variable environmental factor. The ease with which temperature can be measured. and controlled experimentally. together with its widespread influence on the affairs of animals. has understandably led to a large. dispersed literature. In spite of this no recent book provides a comprehensive treatment of the biology of animals in relation to temperature. Our intention in writing this book was to fill that gap. We hope we have provided a modern statement with a critical synthesis of this diverse field. which will be suitable and stimulating for both advanced undergraduate and post graduate students of biology. This book is emphatically not intended as a monographical review. as thermal biology is such a diverse. developed discipline that it could not be encompassed within the confines of a book of this size.
