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Book Relative Contribution and Comparative Life History Characteristics of Hatchery and Wild Steelhead Trout in the Betsie River  Michigan

Download or read book Relative Contribution and Comparative Life History Characteristics of Hatchery and Wild Steelhead Trout in the Betsie River Michigan written by James R. Harbeck and published by . This book was released on 1999 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aquatic Ecosystems in Semi arid Regions

Download or read book Aquatic Ecosystems in Semi arid Regions written by R. D. Robarts and published by Saskatoon, Sask. : The Institute. This book was released on 1992 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains both contributed and invited papers presented at the conference covering the aquatic ecology of lakes and rivers, the chemistry of surface and ground waters, the impact of toxic contaminants on the biology of aquatic ecosystems, and water management strategies and techniques in Canada, the United States, Australia, Spain, and India. The topics covered Prairie lakes and saline environments; wetlands and groundwater; riverine processes and ecology; technical approaches to environmental management; and environmental mitigation and environmental law.

Book Aquatic Sciences and Fisheries Abstracts

Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1992-10 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Government Reports Announcements   Index

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991-02 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Food Habits  Feeding Selectivity  Gastric Digestion Rates and Daily Ration of Rainbow Trout  Salmo Gairdneri Richardson  in Western Manitoba Winterkill Lakes

Download or read book Food Habits Feeding Selectivity Gastric Digestion Rates and Daily Ration of Rainbow Trout Salmo Gairdneri Richardson in Western Manitoba Winterkill Lakes written by Claude C. Holmstrom and published by 1972.. This book was released on 1972 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food habits, feeding selectivity, digestion rates, and daily rations were determined for stocked rainbow trout in a Western Manitoba winterkill lake. Amphipods, cladocerans, and chironomid larvae were the most important food items with amphipods comprising more than 90% by weight of the food consumed from August to October in 1970 and 1971. Rainbow trout were diurnal in their feeding habits and fed more or less continuously throughout the day and early evening. Peak stomach fullness occurred in late afternoon. Food consumption was reduced or absent from about midnight to 6:00 a.m. The type of food organisms eaten at different times of the day did not change appreciably. Evidence suggested that feeding was limited primarily to the limnetic zone. Laboratory and field experiments on feeding selectivity indicated that prey availability was the most important factor in determining which foods were eaten while predator preference was of minor significance. Chironomid larvae, although apparently preferred by the trout, were negatively selected because of their inaccessibility. The more easily captured amphipods were positively selected. Terrestrial invertebrates, plant material, and many littoral organisms were avoided entirely. The relationship between state of digestion and time approximated a negative exponential. The number of hours required for 95% digestion at 5, 12, 17, and 22C was 54, 16, 14, and 9 respectively. Digestion rates were independent of meal size, food type, and fish size for the range of food items and fish weights used in the experiments. Several methods of determining daily ration were evaluated. Estimates based on the balanced equation of Winberg (1956) were considerably higher than those derived from data on digestion rates and diel feeding intensities. Food consumption rates of 3.8% to 5.9% of body weight per day were calculated by the former method for July, August, September, 1971.

Book Microlog  Canadian Research Index

Download or read book Microlog Canadian Research Index written by and published by . This book was released on 1990 with total page 1222 pages. Available in PDF, EPUB and Kindle. Book excerpt: An indexing, abstracting and document delivery service that covers current Canadian report literature of reference value from government and institutional sources.

Book Canadiana

    Book Details:
  • Author :
  • Publisher :
  • Release : 1989
  • ISBN :
  • Pages : 1160 pages

Download or read book Canadiana written by and published by . This book was released on 1989 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Progressive Fish culturist

Download or read book The Progressive Fish culturist written by and published by . This book was released on 1986 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effects of Tank Size and Density on the Growth of Rainbow Trout Salmo Gairdneri

Download or read book The Effects of Tank Size and Density on the Growth of Rainbow Trout Salmo Gairdneri written by Yosni Bin Bakar and published by . This book was released on 1988 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Progressive Fish Culturist

Download or read book The Progressive Fish Culturist written by U.S. Fish and Wildlife Service and published by . This book was released on 1985 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Determination of the Effects of Fish Size and Feed Pellet Size on the Settling Characteristics of Rainbow Trout  Salmo Gairdneri  Culture Cleaning Wastes

Download or read book Determination of the Effects of Fish Size and Feed Pellet Size on the Settling Characteristics of Rainbow Trout Salmo Gairdneri Culture Cleaning Wastes written by Douglas Edward Thomson and published by . This book was released on 1986 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Growth and Food Habits of Strains of Rainbow Trout  Salmo Gairdneri

Download or read book Growth and Food Habits of Strains of Rainbow Trout Salmo Gairdneri written by D. Bemard and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Sierra Ecology Project

Download or read book Sierra Ecology Project written by and published by . This book was released on 1978 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: