Download or read book The Biology of Two Species of Echinorhynchus Acanthocephala from Marine Fishes in Oregon written by Richard Leo Miller and published by . This book was released on 1977 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1979 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Ecology of Echinorhynchus Salmonis and Two Corynosoma Species Acanthocephala in the Fish and Seals of the Northern Gulf of Bothnia written by E. Tellervo Valtonen and published by . This book was released on 1983 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1977 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Helminthological Society of Washington written by Helminthological Society of Washington and published by . This book was released on 1987 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book O S U Theses and Dissertations 1970 1977 written by Oregon State University and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations of Echinorhynchus Gadi Acanthocephala Echinorhynchidae in Two Species of Flatfish Pseudopleuronectes Americanus and Limanda Ferruginea from Rhode Island Waters written by John Luther Gaines and published by . This book was released on 1971 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA Technical Report NMFS SSRF written by and published by . This book was released on 1983 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1976 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Checklist of Parasites of California Oregon and Washington Marine and Estuarine Fishes written by Milton S. Love and published by . This book was released on 1983 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1973- include the following subject areas: Biological sciences, Agriculture, Chemistry, Environmental sciences, Health sciences, Engineering, Mathematics and statistics, Earth sciences, Physics, Education, Psychology, Sociology, Anthropology, History, Law & political science, Business & economics, Geography & regional planning, Language & literature, Fine arts, Library & information science, Mass communications, Music, Philosophy and Religion.
Download or read book Comprehensive Dissertation Index Biological sciences A E written by and published by . This book was released on 1984 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomy of Some Acanthocephala from Marine Fishes with Reference to Species from Curacao N A and Jamaica W I The Journal of Parasitology written by R. M. Cable and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Morphology and Ecology of Echinorhynchus Lageniformas Ekbaum 1938 Acanthocephala written by James Ray Barnes and published by . This book was released on 1967 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The acanthocephalan Echinorhynchus lageniformis Ekbaum, 1938, is a common intestinal parasite of the starry flounder, Platichthys stellatus (Pallas), of Yaquina Bay, Lincoln Co., Oregon. Three hundred and sixty-one flounders were examined and 146 (40.5 percent) were found to harbor infections of E. lageniformis. Cystacanths of E. lageniformis were found encysted in the body cavity of the starry flounder; this is probably the result of the fish feeding on larval infections not yet mature enough to attach to the intestinal mucosa. As the size of the flounder increased, the percent infection decreased. The smaller fish with the higher incidence of infection were found to be of the size range that ate amphipods, which may be the intermediate host, as the main part of their diet. The older fish do not feed on amphipods. A correlation could not be found between the sex of the starry flounder and the incidence and degree of parasitism. A peak of adult worms was found in April, 1966 - 198 mature females as compared to a low of 30 mature females in December, 1965. This indicates a seasonal periodicity in the E. lageniformis population of Yaquina Bay. Possible explanations for this seasonal occurrence were discussed. It is postulated that E. lageniformis lives in its final host for about a year. The one-year-old plus fish were found to have a high incidence of infection, whereas the two-year plus fish had a low incidence of infection. Twenty-six percent of the worms collected were males and 74 percent were females. Of the 146 infections, 74 were unisexual and 72 were mixed (containing both sexes). In April, 1966, the percent infection was the highest - when there were 20 mixed infections and two unisexual infections. This indicates that all the females have a good chance of being fertilized. The starry flounder intestine reacts to E. lageniformis at the point of attachment. It was observed that the larger the worm, the more severe the reaction. No crowding effects were observed in single species infections of E. lageniformis or in concurrent infections with trematodes. The shelled acanthor larva was found to have four enveloping membranes. Data indicates that when the proboscis reaches a certain length and width, it does not increase in size, although the neck and trunk of the worm do increase in size.
Download or read book Advances in Marine Biology written by and published by Academic Press. This book was released on 1973-11-23 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Marine Biology
Download or read book Parasitic Worms Of Fish written by Hartford Williams and published by CRC Press. This book was released on 1994-01-14 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish are a unique group which harbour some 30,000 species of helminths that do not occur in other vertebrates. This book deals specifically with parasitic worms of fish. It covers every aspect of their biology including identification, life-cycles, hostparasite relationships and ecology. It discusses approaches to studying parasitic worm infections, preference of species for particular host species, preference for dwelling in certain organs and tissues, biogeography, seasonality of infections and how parasites have evolved in parallel with their hosts. The book concludes with discussions of fish worms causing diseases in nature and in fish-farms.
Download or read book An Ecological Characterization of the Pacific Northwest Coastal Region Characterization atlas watershed unit descriptions written by and published by . This book was released on 1980 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
