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Disparate Patterns Of Population Genetic Structure And Population History In Two Sympatric Penaeid Shrimp Species Farfantepenaeus Aztecus And Litopenaeus Setiferus In The Eastern United States
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Book Synopsis Disparate Patterns of Population Genetic Structure and Population History in Two Sympatric Penaeid Shrimp Species (Farfantepenaeus Aztecus and Litopenaeus Setiferus) in the Eastern United States by : Anne Louise McMillen-Jackson
Download or read book Disparate Patterns of Population Genetic Structure and Population History in Two Sympatric Penaeid Shrimp Species (Farfantepenaeus Aztecus and Litopenaeus Setiferus) in the Eastern United States written by Anne Louise McMillen-Jackson and published by . This book was released on 2003 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Structure and Genetic Diversity of Litopenaeus Stylirostris and Its Viral Pathogen, Infectious Hypodermal Haematopoietic Necrosis Virus (IHHNV) by : Refugio Robles-Sikisaka
Download or read book Population Structure and Genetic Diversity of Litopenaeus Stylirostris and Its Viral Pathogen, Infectious Hypodermal Haematopoietic Necrosis Virus (IHHNV) written by Refugio Robles-Sikisaka and published by . This book was released on 2008 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, viral outbreaks have affected farmed and wild shrimp stocks in the northwestern Pacific coast of Mexico. Litopenaeus stylirostris is one of the three main penaeid shrimp species in the region and represents a major component of the bulk of wild caught shrimp. Despite the economic importance of the species, genetic diversity and population structure of L. stylirostris has been poorly studied and its interactions with viral pathogens remain unexplored. In this study, the genetic diversity, population structure and demographic history of L. stylirostris populations were addressed using mitochondrial control region sequences. The results showed that L. stylirostris have high levels of genetic diversity and their populations are geographically structured along the Gulf of California. Factors contributing to the observed population structure include historic geological events and contemporary physical oceanographic conditions. The health status of L. stylirostris populations was assessed by determining the prevalence of four of the main viral pathogens known to affect penaeid shrimp. The results showed that infectious hypodermic haematopoietic necrosis virus (IHHNV) is highly prevalent across the geographic range while other viral pathogens are present in low levels or remained undetected. Based on these findings the population genetics, rates of evolution and population history of IHHNV were studied using capsid region sequences. The results showed that IHHNV has a high rate of nucleotide substitution comparable to RNA viruses, is more genetically diverse than previously reported and presents a significant subdivision among viral populations in the northwestern Pacific coast of Mexico. This study provides important insights into the previously unexplored evolutionary and population dynamics of L. stylirostris and IHNNV in the Mexican northwestern Pacific region.
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 2164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Book Synopsis Review of biological data, spatial distribution of the stocks and ecological connectivity between areas beyond national jurisdiction and the exclusive economic zones in the Western Central Atlantic Fishery Commission region by : Arocha, F.
Download or read book Review of biological data, spatial distribution of the stocks and ecological connectivity between areas beyond national jurisdiction and the exclusive economic zones in the Western Central Atlantic Fishery Commission region written by Arocha, F. and published by Food & Agriculture Org.. This book was released on 2024-01-25 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review was developed as a project in response to the needs of the Intersessional Working Group of WECAFC in its task of identifying key options and priorities. The review describes a group of selected species that are considered to be important to Member States of the WECAFC. It classifies them into transboundary and straddling/highly migratory stocks and their fisheries and provides information on the state of exploitation of the selected species. The review also considers the ecological connectivity between the high seas and the EEZs of coastal nations. Lastly, it highlights issues that need to be addressed to generate a sound scientific knowledge base in support of the strategic reorientation of the Commission.
Book Synopsis Fisheries and aquaculture genetics by : Yuzine Esa
Download or read book Fisheries and aquaculture genetics written by Yuzine Esa and published by Frontiers Media SA. This book was released on 2023-07-05 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reproductive Biology of Crustaceans by : Elena Mente
Download or read book Reproductive Biology of Crustaceans written by Elena Mente and published by CRC Press. This book was released on 2008-01-04 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crustaceans adapt to a wide variety of habitats and ways of life. They have a complex physiological structure particularly with regard to the processes of growth (molting), metabolic regulation, and reproduction. Crustaceans are ideal as model organisms for the study of endocrine disruption and stress physiology in aquatic invertebrates. This book
Book Synopsis Gulf of Mexico Origin, Waters, and Biota by : Darryl L. Felder
Download or read book Gulf of Mexico Origin, Waters, and Biota written by Darryl L. Felder and published by Texas A&M University Press. This book was released on 2009 with total page 1405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This landmark scientific reference for scientists, researchers, and students of marine biology tackles the monumental task of taking a complete biodiversity inventory of the Gulf of Mexico with full biotic and biogeographic information. Presenting a comprehensive summary of knowledge of Gulf biota through 2004, the book includes seventy-seven chapters, which list more than fifteen thousand species in thirty-eight phyla or divisions and were written by 138 authors from seventy-one institutions in fourteen countries.This first volume of Gulf of Mexico Origin, Waters, and Biota, a multivolumed set edited by John W. Tunnell Jr., Darryl L. Felder, and Sylvia A. Earle, provides information on each species' habitat, biology, and geographic range, along with full references and a narrative introduction to the group, which opens each chapter.
Book Synopsis Speciation in the Open Ocean by : Erica Goetze
Download or read book Speciation in the Open Ocean written by Erica Goetze and published by . This book was released on 2004 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis African Journal of Marine Science by :
Download or read book African Journal of Marine Science written by and published by . This book was released on 2007 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Structures, Evolutionary Relationships and Genetic Effects of Domestication in American Penaeid Shrimp by : Sara Louise Faivre Sunden
Download or read book Population Structures, Evolutionary Relationships and Genetic Effects of Domestication in American Penaeid Shrimp written by Sara Louise Faivre Sunden and published by . This book was released on 1991 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation Genetics of the Endangered San Diego Fairy Shrimp (Branchinecta Sandiegonensis) by :
Download or read book Conservation Genetics of the Endangered San Diego Fairy Shrimp (Branchinecta Sandiegonensis) written by and published by . This book was released on 2013 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population genetic data are becoming an increasingly important tool in the conservation and management of endangered species. Statistical analysis of genetic data can inform agencies on population boundaries within a species, and help to infer processes that lead to genetic patterns, thereby influencing conservation decisions. This thesis examines population genetics in the endangered San Diego fairy shrimp, Branchinecta sandiegonensis, using multiple molecular markers. In order to quantify diversity and population structure, genetic data were collected from 50 pools from 23 pool complexes scattered throughout San Diego County at seven novel microsatellite loci. We tested the hypothesis that pool complex boundaries and geographic distance are important components of genetic structure. Microsatellite and mtDNA genetic patterns were compared to test for concordance between marker types. We also conducted preliminary tests for the effect of pool disturbance and hybridization on genetic diversity. Overall, results show that there is considerable microsatellite diversity within pools. In the preliminary tests, no significant change in genetic diversity in response to hybridization was detected. Disturbance may affect genetic diversity within pools, but it is unclear which component of disturbance is correlated with diversity. Overall, genetic differentiation among pool complexes is relatively strong. The hierarchical spatial arrangement of pools plays a significant role in genetic divergence among populations. Increasing geographic distances between sites is a significant gene flow barrier for this species, as has been found for other fairy shrimp species. Evidence of historical isolation between two divergent groups was also found. There is concordance among marker types, with some discrepancies. Population genetic structure in B. sandiegonensis across the study range is governed by gene flow restricted primarily to pool complexes. We recommend that pool complexes be treated as management units provided that pools are ecologically similar within them. Historical divergence among groups of pools should be taken into account as well, in order to maintain genetic variation and dispersal mechanisms across the species' range.
Book Synopsis Population Structure of the Vernal Pool Fairy Shrimp (Branchinecta Lynchi) at Two Spatial Scales by :
Download or read book Population Structure of the Vernal Pool Fairy Shrimp (Branchinecta Lynchi) at Two Spatial Scales written by and published by . This book was released on 2008 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Patterns of dispersal and gene-flow in freshwater invertebrates have often been difficult to interpret. Despite the assumed high potential for dispersal, populations of freshwater invertebrates display high genetic differentiation over small distances. There have been several explanations posed for this gene flow dispersal paradox, including strong priority effects or low realized dispersal. This study explores the spatial genetic structure of the freshwater invertebrate Branchinecta lynchi, a threatened vernal pool inhabitant, at two scales with a goal to determine the scale at which gene flow is important in shaping these patterns. Vernal pools were sampled at two different localities the San Luis National Wildlife Refuge Complex and a preserve adjacent to the University of California, Merced. Individuals were genotyped using both the mitochondrial cytochrome oxidase I subunit (COI) and nuclear amplified fragment length polymorphisms (AFLPs). Pairwise Fst values showed that genetic structure for this species was high, however, the only geographic pattern that emerged was isolation by distance at the local scale for the COI marker. Discrepancies between mitochondrial and AFLP markers may be explained several ways, including genotyping error, sex-biased dispersal and/or the longer time to equilibrium of the nuclear genome. These results suggest that gene flow is important at the local scale, at least for mitochondrial DNA, while historical colonization patterns are likely maintained at the regional scale by priority effects. I infer that maintaining connectivity among vernal pool complexes through local dispersal vectors should be a management priority.
Book Synopsis The Rasputin Effect: When Commensals and Symbionts Become Parasitic by : Christon J. Hurst
Download or read book The Rasputin Effect: When Commensals and Symbionts Become Parasitic written by Christon J. Hurst and published by Springer. This book was released on 2016-07-05 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on those instances when benign and even beneficial relationships between microbes and their hosts opportunistically change and become detrimental toward the host. It examines the triggering events which can factor into these changes, such as reduction in the host’s capacity for mounting an effective defensive response due to nutritional deprivation, coinfections and seemingly subtle environmental influences like the amounts of sunlight, temperature, and either water or air quality. The effects of environmental changes can be compounded when they necessitate a physical relocation of species, in turn changing the probability of encounter between microbe and host. The change also can result when pathogens, including virus species, either have modified the opportunist or attacked the host’s protective natural microflora. The authors discuss these opportunistic interactions and assess their outcomes in both aquatic as well as terrestrial ecosystems, highlighting the impact on plant, invertebrate and vertebrate hosts.
Book Synopsis Phylogeography and Population Genetics in Crustacea by : Christoph Held
Download or read book Phylogeography and Population Genetics in Crustacea written by Christoph Held and published by CRC Press. This book was released on 2016-04-19 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, technological progress and the rise of DNA barcoding efforts have led to a significant increase in the availability of molecular datasets on intraspecific variability. Carcinologists and other organismal biologists, who want to use molecular tools to investigate patterns on the scale of populations, face a bewildering variety of genetic m
Book Synopsis Habitat Suitability Index Models by : Rosemarie Mulholland
Download or read book Habitat Suitability Index Models written by Rosemarie Mulholland and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An International Borderland of Concern by : D. M. Leslie
Download or read book An International Borderland of Concern written by D. M. Leslie and published by . This book was released on 2016 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decapod Crustacean Phylogenetics by : Joel W. Martin
Download or read book Decapod Crustacean Phylogenetics written by Joel W. Martin and published by CRC Press. This book was released on 2016-04-19 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decapod crustaceans are of tremendous interest and importance evolutionarily, ecologically, and economically. There is no shortage of publications reflecting the wide variety of ideas and hypotheses concerning decapod phylogeny, but until recently, the world's leading decapodologists had never assembled to elucidate and discuss relationships among
