Prevalence Geographic Distribution And Biology Of A Dungeness Crab Cancer Magister Microsporidian Parasite

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Prevalence, Geographic Distribution, and Biology of a Dungeness Crab, Cancer Magister, Microsporidian Parasite

Author : Richard K. Childers
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (364 download)

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Book Synopsis Prevalence, Geographic Distribution, and Biology of a Dungeness Crab, Cancer Magister, Microsporidian Parasite by : Richard K. Childers

Download or read book Prevalence, Geographic Distribution, and Biology of a Dungeness Crab, Cancer Magister, Microsporidian Parasite written by Richard K. Childers and published by . This book was released on 1994 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microsporidian parasite Nadelspora canceri infects Dungeness crabs, Cancer magister, along the United States Pacific Northwest coast. The prevalence and seasonal variation of N. canceri in Dungeness crabs from Alsea Bay, Oregon, are described based on examination of 2991 crabs collected at monthly intervals from October, 1991 to June, 1993. The average prevalence in monthly samples was 21.0% and ranged from 8.2% to 33.0%. No significant differences in monthly or seasonal parasite prevalence were observed. A total of 3061 Dungeness crabs was examined from an additional seven Pacific Northwest estuaries and Puget Sound to document the geographic distribution of N. canceri and the prevalence of the parasite in these locations. The estuaries sampled and the prevalences observed were: Humboldt Bay, California (14.6%), Coos Bay (10.6%), Yaquina Bay (2.0%), Tillamook Bay (41.2%), and Nehalem Bay, Oregon (14.2%), Willapa Bay (6.9%), and Grays Harbor Washington (0.44%). Dungeness crabs were examined from the Dungeness spit, Kala Point, and Mukilteo areas in Puget Sound and no infected crabs were found. A total of 9317 male Dungeness crabs> 15.9 cm carapace width (CW) captured in the commercial ocean crab fishery was examined for N. canceri and 27 (0.3%) were infected with the parasite. No infections were found in crabs smaller than 3.0 cm CW and the prevalence of infection generally increased with crab size reaching a peak of 22.2% in 14 cm CW crabs. The overall infection prevalence in male crabs (19.2%) was more than twice that of female crabs (8.0%), and of the 821 infected crabs found, 629 (76.6%) were males. The mortality of laboratory-held Dungeness crabs naturally infected with N. canceri was compared to that of uninfected crabs in two separate experiments and in both cases a significantly higher mortality was observed for infected crabs. Nadelspora canceri infections were established in both juvenile and adult Dungeness crabs that were fed parasite spores in laboratory experiments indicating that transmission is direct and intermediate hosts or vectors are not required for transmitting the parasite between hosts.

Malacological Review

Author :
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.:/5 (318 download)

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Download or read book Malacological Review written by and published by . This book was released on 2004 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biological Effects of Pesticides on the Dungeness Crab

Author : Richard Stanley Caldwell
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Biological Effects of Pesticides on the Dungeness Crab by : Richard Stanley Caldwell

Download or read book Biological Effects of Pesticides on the Dungeness Crab written by Richard Stanley Caldwell and published by . This book was released on 1978 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Fishery and Biology of the Dungeness Crab (Cancer Magister Dana) in Oregon Waters

Author : Kenneth D. Waldron
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (21 download)

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Book Synopsis The Fishery and Biology of the Dungeness Crab (Cancer Magister Dana) in Oregon Waters by : Kenneth D. Waldron

Download or read book The Fishery and Biology of the Dungeness Crab (Cancer Magister Dana) in Oregon Waters written by Kenneth D. Waldron and published by . This book was released on 1958 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of studies beginning in 1947 on the biology of the Dungeness crab (Cancer magister) in Oregon coastal waters are reported. A review is made of the history of the fishery with regard to trend of the catch by magnitude, area, and season; the development and conduct of the fishery itself; and the regulations governing the fishery. The first reported commercial crab landings in Oregon were 6,628 pounds in 1880. The fishery expanded slowly until 1933 after which the catch rose sharply to a peak of about 11 million pounds in 1943. Landings in recent years have fluctuated between 6 and 11 million pounds from a commercial fishery which is carried out along the major portion of the Oregon coast. During the period 1947-50, 6,249 tagged crabs were released in offshore and bay waters of Oregon and 34.6 percent of the tags were subsequently recovered. The average movement of 1,042 recoveries of crabs released in offshore waters, as measured by the distance from the tagging site, was 8.3 miles (range 0-133 miles) in 80 days. For crabs released within bays, 606 recoveries averaged a minimum distance traveled of 4.2 miles (range 0-81 miles). Fifty-seven percent of the recoveries of offshore releases and 84 percent of the recoveries of bay releases were made within 4 miles of the respective tagging sites. Over 90 percent of the recoveries of offshore releases were made within 6 months, although 3 crabs were out more than a year with 1 at liberty 878 days. Tagged crabs moved from offshore to bays, from bay to bay, and from bays to offshore. There was no significant difference in percentage recovery for crabs with or without missing appendages. Egg-bearing female crabs are present in offshore waters during the period October to March, inclusive. Larval crabs assumed to be C. magister were observed in offshore waters from April to July, inclusive. Considerable variation in early growth of post larval crabs was observed in laboratory experiments. The amount of growth of crabs between 6.4 and 146.0 mm., as observed by measuring them before and after molting, increases until a shoulder width of about 95 mm. is reached. The increase with each subsequent molt thereafter remains relatively constant. Macroplankton-eating fishes feed upon free swimming crab larvae. Adult crabs up to at least 114 mm. in shoulder width are preyed upon by voracious fish such as ling-cod (Ophiodon elongatus), the great marbeled sculpin (Scorpaenichthys armoratus), wolf eel (Anarrhichthys ocellatus), halibut (Hippoglossus stenolepis), and some of the rock fishes of the genus Sebastodes.

Aquatic Sciences and Fisheries Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.0/5 ( download)

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Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1996-10 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sea Grant Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.3/5 (5 download)

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Download or read book Sea Grant Abstracts written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Journal of Shellfish Research

Author :
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.8/5 (153 download)

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Download or read book Journal of Shellfish Research written by and published by . This book was released on 2006 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Regional Patterns of Microsporidian Infection in Two Michigan Trout Stream Invertebrates

Author : Laurel K. Nida
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Regional Patterns of Microsporidian Infection in Two Michigan Trout Stream Invertebrates by : Laurel K. Nida

Download or read book Regional Patterns of Microsporidian Infection in Two Michigan Trout Stream Invertebrates written by Laurel K. Nida and published by . This book was released on 2001 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

North Pacific Workshop on Stock Assessment and Management of Invertebrates

Author : Canada. Department of Fisheries and Oceans. Pacific Region
Publisher : Department of Fisheries and Oceans, Information and Publications Branch
ISBN 13 :
Total Pages : 444 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis North Pacific Workshop on Stock Assessment and Management of Invertebrates by : Canada. Department of Fisheries and Oceans. Pacific Region

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.

Sexual Biology and Reproduction in Crustaceans

Author : Thanumalaya Subramoniam
Publisher : Academic Press
ISBN 13 : 0128096063
Total Pages : 528 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Sexual Biology and Reproduction in Crustaceans by : Thanumalaya Subramoniam

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

Ecological Effects of Pesticides on Non-target Species

Author : David Pimentel
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Ecological Effects of Pesticides on Non-target Species by : David Pimentel

Download or read book Ecological Effects of Pesticides on Non-target Species written by David Pimentel and published by . This book was released on 1971 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Global Invader

Author : Sylvia Behrens Yamada
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Global Invader by : Sylvia Behrens Yamada

Download or read book Global Invader written by Sylvia Behrens Yamada and published by . This book was released on 2001 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Writing to educate those concerned with sea life in the Pacific Northwest, Yamada (zoology, Oregon State U., Corvallis) traces the generally devastating impact of the invasive European green crab with reference to research carried out in New England, California, Oregon, South Africa, Australia, and Tasmania. A full description of the biology and life history of the European green crab is provided, along with photos, glossary, list of references, and descriptive table of Pacific Northwest crabs. Annotation copyrighted by Book News, Inc., Portland, OR.

Marine Metapopulations

Author : Jacob P. Kritzer
Publisher : Elsevier
ISBN 13 : 0080454712
Total Pages : 573 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis Marine Metapopulations by : Jacob P. Kritzer

Download or read book Marine Metapopulations written by Jacob P. Kritzer and published by Elsevier. This book was released on 2010-07-20 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological improvements have greatly increased the ability of marine scientists to collect and analyze data over large spatial scales, and the resultant insights attainable from interpreting those data vastly increase understanding of poplation dynamics, evolution and biogeography. Marine Metapopulations provides a synthesis of existing information and understanding, and frames the most important future directions and issues. First book to systematically apply metapopulation theory directly to marine systems Contributions from leading international ecologists and fisheries biologists Perspectives on a broad array of marine organisms and ecosystems, from coastal estuaries to shallow reefs to deep-sea hydrothermal vents Critical science for improved management of marine resources Paves the way for future research on large-scale spatial ecology of marine systems

Fungi in Coastal and Oceanic Marine Ecosystems

Author : Seshagiri Raghukumar
Publisher : Springer
ISBN 13 : 3319543040
Total Pages : 383 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Fungi in Coastal and Oceanic Marine Ecosystems by : Seshagiri Raghukumar

Download or read book Fungi in Coastal and Oceanic Marine Ecosystems written by Seshagiri Raghukumar and published by Springer. This book was released on 2017-04-04 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an ecosystem-oriented overview of the diversity, ecological role, and biotechnological applications of marine fungi as well as an in-depth introduction to the marine environment, fungal classification, and ecological principles. It also presents the latest research findings on coastal marine and oceanic ecosystems, such as mangrove, seagrass, salt marsh, algal, coral reef and benthic ecosystems. Focusing on the diversity of fungi as well as their role as symbionts, parasites and saprotrophs, the book also discusses the physiology and biotechnological applications of fungi and highlights topics of future interest. Intended for students and researchers in marine biology and microbiology, it includes detailed descriptions, illustrations, figures, tables, and exhaustive literature citations. A detailed chapter on methods used to study marine fungi, their classification and ecological principles is of particular interest to newcomers in the field.

A Symposium on Diseases of Fishes and Shellfishes

Author : Stanislas F. Snieszko
Publisher :
ISBN 13 :
Total Pages : 544 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis A Symposium on Diseases of Fishes and Shellfishes by : Stanislas F. Snieszko

Download or read book A Symposium on Diseases of Fishes and Shellfishes written by Stanislas F. Snieszko and published by . This book was released on 1970 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Conservation for the Anthropocene Ocean

Author : Phillip S. Levin
Publisher : Academic Press
ISBN 13 : 012809298X
Total Pages : 532 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Conservation for the Anthropocene Ocean by : Phillip S. Levin

Download or read book Conservation for the Anthropocene Ocean written by Phillip S. Levin and published by Academic Press. This book was released on 2017-06-01 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation for the Anthropocene Ocean: Interdisciplinary Science in Support of Nature and People emphasizes strategies to better connect the practice of marine conservation with the needs and priorities of a growing global human population. It conceptualizes nature and people as part of shared ecosystems, with interdisciplinary methodologies and science-based applications for coupled sustainability. A central challenge facing conservation is the development of practical means for addressing the interconnectedness of ecosystem health and human well-being, advancing the fundamental interdisciplinary science that underlies conservation practice, and implementing this science in decisions to manage, preserve, and restore ocean ecosystems. Though humans have intentionally and unintentionally reshaped their environments for thousands of years, the scale and scope of human influence upon the oceans in the Anthropocene is unprecedented. Ocean science has increased our knowledge of the threats and impacts to ecological integrity, yet the unique scale and scope of changes increases uncertainty about responses of dynamic socio-ecological systems. Thus, to understand and protect the biodiversity of the ocean and ameliorate the negative impacts of ocean change on people, it is critical to understand human beliefs, values, behaviors, and impacts. Conversely, on a human-dominated planet, it is impossible to understand and address human well-being and chart a course for sustainable use of the oceans without understanding the implications of environmental change for human societies that depend on marine ecosystems and resources. This work therefore presents a timely, needed, and interdisciplinary approach to the conservation of our oceans. Helps marine conservation scientists apply principles from oceanography, ecology, anthropology, economics, political science, and other natural and social sciences to manage and preserve marine biodiversity Facilitates understanding of how and why social and environmental processes are coupled in the quest to achieve healthy and sustainable oceans Uses a combination of expository material, practical approaches, and forward-looking theoretical discussions to enhance value for readers as they consider conservation research, management and planning

Metal-Containing Enzymes

Author :
Publisher : Academic Press
ISBN 13 : 0128007885
Total Pages : 174 pages
Book Rating : 4.1/5 (28 download)

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Download or read book Metal-Containing Enzymes written by and published by Academic Press. This book was released on 2014-11-24 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published continuously since 1944, the Advances in Protein Chemistry and Structural Biology series is the essential resource for protein chemists. Each volume brings forth new information about protocols and analysis of proteins. Each thematically organized volume is guest edited by leading experts in a broad range of protein-related topics. Describes advances in metal-containing enzymes Chapters are written by authorities in their field Targeted to a wide audience of researchers, specialists, and students The information provided in the volume is well supported by a number of high quality illustrations, figures, and tables