Download or read book A Carapace Length Measurement of Brown King Crabs Lithodes Aequispina for Size at recruitment Into the Commercial Fishery in Waters Adjacent to the Aleutian Islands Alaska written by Donn Tracy and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Carapace Length Measurement as an Indicator of Size at recruitment of Scarlet King Crabs Lithodes Couesi Into the Commercial Fishery in Waters Adjacent to the Alaska Peninsula written by Donn Tracy and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimated Mean Carapace Length at Minimum Legal Size of Blue King Crabs Paralithodes Platypus in Waters Adjacent to St Matthew Island Alaska written by Donn Tracy and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Carapace Length Measurement of Korean Hair Crabs Erimacrus Isebenckii for Size at recruitment Into the Commercial Fishery in Waters Adjacent to the Pribilof Islands Alaska written by Donn Tracy and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimated Greatest Carapace Length at Minimum Legal Size of St Matthew Island Blue King Crabs written by Donn Tracy and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spatial Variability in Size at Maturity and Reproductive Timing of Golden King Crab Lithodes Aequispinus in Southeast Alaska written by Andrew P. Olson and published by . This book was released on 2016 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many crab fisheries around the world are managed by size, sex and season regulations, where male crabs are given at least one opportunity to reproduce before being harvested. Therefore, to set minimum legal size and fishing season for harvest, information on size at maturity and reproductive timing is needed. Lithodes aequispinus has supported a commercial fishery in Southeast Alaska since 1972, with an average annual harvest of 207 t. The current legal size and season for harvest are based L. aequispinus growth and maturity information from other parts of the range and limited information on reproduction. Additionally, evidence suggests that these life history parameters can vary spatially. Therefore, I investigated size at maturity, reproductive timing, and variation in harvest from the commercial fishery for L. aequispinus. I compared size at maturity estimates (males and females), mean spine contribution to legal size male crabs, and depth and bottom temperature among seven management areas in Southeast Alaska (Lynn Canal, Icy Strait, North Stephens Passage, Frederick Sound, Mid-Chatham Strait, Lower Chatham Strait, and Clarence Strait) and investigated reproductive timing of mature females in Frederick Sound. Male size of maturity estimates varied spatially, with an increasing trend with latitude and significant differences occurred among the majority of management areas. Female maturity estimates varied significantly among all areas, but showed no latitudinal pattern. The latitudinal pattern for size at male maturity in Southeast Alaska differed from published values in other parts of the range (Japan, Russia, the Bering Sea and from the Aleutian Islands to Canada), where size at maturity decreased with increasing latitude. When I investigated the ability of environmental factors to explain the patterns in Southeast Alaska, depth and temperature were not found to influence the spatial variation in male maturity estimates. Depth varied by management area, and males and females were distributed at similar depths. Temperature varied less than 1.0 °C among management areas, and monthly temperature measured at a mooring in the Gulf of Alaska also varied by less than 1.0 °C throughout the year at depths where L. aequispinus are found (250 m). Mean spine contribution to legal size varied spatially but did not influence calculated legal size. Reproductive timing was determined for eyed embryos, with projected hatching of embryos occurring from April to November, indicating that a distinct reproductive season does not exist. Management implications from this research are that the current legal size (177.8 mm/7.0 in carapace width (CW)) does not allow male crab to reproduce at least once before being harvested for all management areas. If legal size is increased to 196.5 mm/7.7 in CW, a higher proportion of male crab could reproduce at least once before being harvested. This size change could have negative economic impact to the commercial fishery with potential harvest lost in areas with smaller sizes at maturity. This study shows the importance of re-examining legal size and season based on an improved understanding of how life history characteristics change over space and the resulting implications for improved fisheries management.

Download or read book Estimated Mean Carapace Width at Minimum Legal Size of Deep Sea Tanner Crabs Chionocetes i e Chionoecetes Tanneri in Waters Adjacent to the Alaska Peninsula written by Donn Tracy and published by . This book was released on 1998 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carapace Width merus Length Relationship for Bristol Bay Red King Crab and a Minimum Size Limit Based on Merus Length written by William E. Donaldson and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Length width Relationships of Carapace Measurements of the King Crab Paralithodes Camtschatica written by Roy Rickey and published by . This book was released on 1961 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book North Pacific Workshop on Stock Assessment and Management of Invertebrates written by Canada. Department of Fisheries and Oceans. Pacific Region and published by Department of Fisheries and Oceans, Information and Publications Branch. This book was released on 1986 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various papers are presented on the topics of invertebrate management ingeneral; the sampling of adults, juveniles and larval forms;population dynamics and models; exploration and multispecies interactions;and management strategies. An overall workshop summary is included.

Download or read book Navigating Troubled Waters written by James R. Mackovjak and published by . This book was released on 2010 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book King Crabs of the World written by Bradley G. Stevens and published by CRC Press. This book was released on 2014-03-18 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: With species existing in all subpolar seas, king crabs are one of the most valuable seafoods. Major fluctuations in their abundance have stimulated a flurry of research and a rapid expansion of the scientific literature in the last decade. King Crabs of the World: Biology and Fisheries Management consolidates extensive knowledge on the biology, sys

Download or read book Sexual Biology and Reproduction in Crustaceans written by Thanumalaya Subramoniam and published by Academic Press. This book was released on 2016-09-27 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sexual Biology and Reproduction in Crustaceans covers crustacean reproduction as it deals with the structural morphology of the gamete-producing primary sex organs, such as the testis and ovary, the formation and maturation of gametes, their fusion during fertilization, and embryonic development that lead to the release of larvae. Constituting a diverse assemblage of animals, crustaceans are best known by their common representatives, such as shrimps, lobsters, and crabs, but also include many more less familiar, but biologically important forms. This work covers the variety of ways in which both male and female gametes are produced by evolving different sexual systems in crustaceans, the range of reproductive systems, and the accordingly, and highly diverse, mechanistic modes of sex determination. In addition, the book features such topics as genetic and environmental determinants in sex determination pattern, variability of mechanisms of fertilization among different species, the origin of different mating systems, the associated mating and brooding behaviors, and the adaptive ability to different environmental conditions with discussion on the evolutionary ecology of social and sexual systems in certain species, which have shown eusocial tendencies, similar to social insects. Marine species occupying diversified ecological niches in tropical and temperate zones reproduce under definitive environmental conditions. Therefore, reproductive ecology of different crustaceans inhabiting different ecological niches also constitutes another important aspect of the work, along with yolk utilization and embryogenesis leading to release of different larval forms, which reflect on their aquatic adaptability. Forms a valuable source of recent references on the current research in crustacean reproductive physiology Covers various mating and breeding systems, providing illustrative examples for sexual selection, parental care of developing eggs and embryos, and the evolution of other reproductive behaviors Features contributions written in the form of review articles, enabling readers to not only gain information in the respective subject, but also help them stimulate ideas in their chosen field of research Includes a glossary created by the author to define technical terms Demonstrates the ability of crustacean species to serve as useful model systems for other organisms, to investigate issues related to sexual conflict, mate choice, and sperm competition Discusses techniques in endocrine research to help researchers in aquaculture develop protocols in the control of reproduction

Download or read book History of Carcinology written by Frank Truesdale and published by CRC Press. This book was released on 2020-08-26 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this volume take several forms, from strict chronologies to detailed historical analyses. Topics covered include: towards the history of pre-Linnean carcinology in Brazil; the beginning of Portugese carcinology; from Oviedo to Rathbun; the development of brachturan crab tascononry in the Neotropics (1535-1937); studies on decapod crustaceans of the Pacific Coast of the United States and Canada; women's contributions to carcinology; reflections on crab research in North America since 1758; carcinology in classical Japanese work.

Download or read book Living Marine Legacy of Gwaii Haanas written by Anne Harfenist and published by [Halifax, N.S.] : Parks Canada. This book was released on 2002-01-01 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parasites and Pathogens of Insects written by Nancy E. Beckage and published by Academic Press. This book was released on 2012-12-02 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both volumes of Parasites and Pathogens of Insects provide in-depth coverage of the interface between insect parasites and pathogens and hosts, and explore the relationships between these partners. They emphasize biochemical and molecular interactions, basic biology, and the roles of hormones, receptors, and other cellular components in modulating interactions between host insects and attacking agents. These topics also are assessed in relation to biotechnology and biological control. In the short term, these volumes fill a void in current literature by emphasizing basic interactions at the biochemical and molecular levels. In the long term, these interactions may provide avenues for exploitation to enhance the rate of "beneficial" parasitism or to reduce the rates of disease transmission and infection of vertebrate hosts. Presents the latest information on insect parasites and pathogens Describes biochemical and molecular host-parasite and host-pathogen relationships Covers mechanisms of insect pathogenicity and resistance Provides exceptional breadth of coverage and authoritative reviews Special topics Transposable elements in insect pathogens Co-evolution and gene transfer between hosts and invaders Biological control

Download or read book Translational Biology in Medicine written by M. Montano and published by Elsevier. This book was released on 2014-12-08 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent emphasis in biomedical research on translational biology and personalized medicine is revolutionizing conceptual and experimental approaches to understanding and improving human health. Translational Biology in Medicine begins with an introduction to experimental model systems for disease, such as cell lines, primary cells, stem cells and animal models for disease, followed by a systematic description of genetic and genomic profiling and biomarker validation currently used in biomedical research. Examples of translation studies that have used these models and methods are presented, including studies in aging, tissue repair and chronic infection, each with an emphasis on how personalized medicine is transforming biomedicine. Bioethical considerations in translational study design and bioethical considerations in biomedical research are then covered, before concluding remarks, and a look towards the future of personalized medicine. Describes cellular and animal model systems used in translational research Discusses the use of blood, genetic and genomic biomarkers for disease Presents translational studies in aging, tissue repair and infectious disease biomedicine