Biology of the Pile Perch, Rhacochilus Vacca in Yaquina Bay, Oregon PDF Download
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Author: Paul Gordon Wares Publisher: ISBN: Category : Fishes Languages : en Pages : 24
Book Description
Growth, reproduction, food habits, and parasites of pile perch were investigated in Yaquina Bay, Oregon between April 1966 and July 1967. The research disclosed that pile perch live at least 10 years. Males and females of given ages are close to the same size up to age IV, after which females are increasingly larger than males. The diet varies between seasons and localities. Pile perch are carnivorous feeders, obtaining food from the bottom or protruding surfaces in the littoral zone. Principal foods are barnacles, mussels, the bay clams, crabs, mud shrimp and tube dwelling amphipod. None of the pile perch examined was heavily parasitized. Infestations of gill copepods vary seasonally.
Author: Paul Gordon Wares Publisher: ISBN: Category : Fishes Languages : en Pages : 24
Book Description
Growth, reproduction, food habits, and parasites of pile perch were investigated in Yaquina Bay, Oregon between April 1966 and July 1967. The research disclosed that pile perch live at least 10 years. Males and females of given ages are close to the same size up to age IV, after which females are increasingly larger than males. The diet varies between seasons and localities. Pile perch are carnivorous feeders, obtaining food from the bottom or protruding surfaces in the littoral zone. Principal foods are barnacles, mussels, the bay clams, crabs, mud shrimp and tube dwelling amphipod. None of the pile perch examined was heavily parasitized. Infestations of gill copepods vary seasonally.
Author: Florence T. Wright Publisher: ISBN: Category : Atlantic salmon Languages : en Pages : 28
Book Description
North American stocks of Atlantic salmon (Salmo salar) have been declining. One measure being employed to reverse that trend is increased hatchery production. As with husbandry of other animals, intensive rearing is usually associated with higher than normal health risks. Research on diseases of Atlantic salmon can help prevent, reduce, or otherwise control mortality due to problem parasites, infections, and other diseases. For planning of research as well as for diagnostic work, health management, and husbandry, published information on diseases of the Atlantic salmon must be readily available. Inasmuch as the literature is widely scattered, the purpose of this work is to compile a bibliography from international sources on the diseases (detection, diagnosis, identification, and control) of Atlantic salmon. Most of the references are arranged alphabetically by author, either have been annotated by the staff of the Eastern Fish Disease Laboratory, or are abstracts by the author.
Author: Leroy C. Folmar Publisher: ISBN: Category : Aquatic animals Languages : en Pages : 24
Book Description
Toxicity tables for the herbicides acrolein, dalapon, dichlobenil, diquat, and endothal list the test organisms, types of tests, experimental conditions, and test results. Each table is followed by a list of references. The materials provide a useful source of toxicity data on these herbicides to researchers, regulatory agencies, and manufacturers.
Author: Andy Lamb Publisher: Harbour Publishing Company ISBN: 9781550174717 Category : Nature Languages : en Pages : 335
Book Description
Written by a marine biologist and illustrated in colour by a prizewinning underwater photographer, Coastal Fishes of the Pacific Northwest identifies each fish by its common name and is illustrated with full-colour photographs and labelled sketches. Special sections present catching tips for anglers and commercial fishermen; location hints for divers, beachcombers and pleasure boaters; and cooking ideas for seafood gourmets. The information included in these sections provides a brief but detailed description of each fish's habitat, physical characteristics and behaviour--everything that a fisherman or an amateur naturalist needs to know!
Author: John W. Day, Jr. Publisher: John Wiley & Sons ISBN: 0471755672 Category : Science Languages : en Pages : 576
Book Description
Estuaries are among the most biologically productive ecosystems on the planet--critical to the life cycles of fish, other aquatic animals, and the creatures which feed on them. Estuarine Ecology, Second Edition, covers the physical and chemical aspects of estuaries, the biology and ecology of key organisms, the flow of organic matter through estuaries, and human interactions, such as the environmental impact of fisheries on estuaries and the effects of global climate change on these important ecosystems. Authored by a team of world experts from the estuarine science community, this long-awaited, full-color edition includes new chapters covering phytoplankton, seagrasses, coastal marshes, mangroves, benthic algae, Integrated Coastal Zone Management techniques, and the effects of global climate change. It also features an entriely new section on estuarine ecosystem processes, trophic webs, ecosystem metabolism, and the interactions between estuaries and other ecosystems such as wetlands and marshes
Author: Paul Gordon Wares
Author: Paul Gordon Wares
Author: 
Author: Milton S. Love
Author: Florence T. Wright
Author: 
Author: Leroy C. Folmar
Author: Roger A. Barnhart
Author: Andy Lamb
Author: Philip M. Roedel
Author: John W. Day, Jr.