Special Scientific Report: Fisheries, Números 525-540National Marine Fisheries Service, 1965 |
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Página 6
... Toxicity of 4,346 chemicals to larval lampreys and fishes . U.S. Fish Wildl . Serv . , Spec . Sci . Rep . Fish ... toxic toward larval lampreys in tests with rainbow trout and 10 warm - water fish species . Toxicity varied widely ...
... Toxicity of 4,346 chemicals to larval lampreys and fishes . U.S. Fish Wildl . Serv . , Spec . Sci . Rep . Fish ... toxic toward larval lampreys in tests with rainbow trout and 10 warm - water fish species . Toxicity varied widely ...
Página 22
... toxic to sea lampreys . More detailed experiments on different spe- cies and stages of lampreys and on five bony fishes revealed anesthetic action similar to that determined at higher concentrations of other anes- thetics . The compound ...
... toxic to sea lampreys . More detailed experiments on different spe- cies and stages of lampreys and on five bony fishes revealed anesthetic action similar to that determined at higher concentrations of other anes- thetics . The compound ...
Página 29
... toxic chemical . The first three field tests of selective larvicides are de- scribed . MOFFETT , JAMES W. 1958c . Trout in the Great Lakes . U.S. Trout News 3 ( 3 ) : 8-10 . Popular account of penetration of sea lamprey into upper Great ...
... toxic chemical . The first three field tests of selective larvicides are de- scribed . MOFFETT , JAMES W. 1958c . Trout in the Great Lakes . U.S. Trout News 3 ( 3 ) : 8-10 . Popular account of penetration of sea lamprey into upper Great ...
Página 31
... toxic to sea lampreys . Exposure of earlier stages ( blastula through hatching ) slowed de- velopment and led to death . Prolarvae of Stage 17 survive to Stage 18 but then die if still exposed . To assure complete destruction of young ...
... toxic to sea lampreys . Exposure of earlier stages ( blastula through hatching ) slowed de- velopment and led to death . Prolarvae of Stage 17 survive to Stage 18 but then die if still exposed . To assure complete destruction of young ...
Página 33
... toxic to sea lamprey ammocetes . Absorption maxima and molar absorptivities in the ultraviolet range and principal infrared bands are described . Acidity characteristics of the larvicides were measured . SMITH , MANNING APPLEGATE . A ...
... toxic to sea lamprey ammocetes . Absorption maxima and molar absorptivities in the ultraviolet range and principal infrared bands are described . Acidity characteristics of the larvicides were measured . SMITH , MANNING APPLEGATE . A ...
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Términos y frases comunes
abundance Alaska Amer American shad anchovy larvae Appendix table Atlantic Area Atlantic menhaden August Baja California ber rences taken blooms breve brevis Bull Bureau of Commercial central Baja California Chesapeake Bay coast Commercial Fisheries concentrations cruise dead fish dinoflagellates distribution eggs estimate females FISH AND WILDLIFE Florida fork length frequency fur seals growth Gulf Gymnodinium jack mackerel July June kill Lake Erie lake trout larvae Little Kitoi Lake males migration mortality Number Number Number Number Percent Occur offshore OOSTEN organisms outbreaks Paul Island pelagic Petersen tag phosphorus plankton population Pribilof Islands pups purse seine purse seine catches red tide red-tide River Rock Island Dam Ruth Lake salinity salmon sardine sea lamprey season smolts sockeye spawning Spec species Station lines striped bass surface survival Tampa Bay temperature tion Total Number toxic U.S. Fish Wildl WILDLIFE SERVICE zooplankton
Pasajes populares
Página 73 - UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE UNITED STATES DEPARTMENT OF THE INTERIOR, Fred A.
Página 4 - US DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC, June 13, 1962.
Página 1 - EH 1959. Vertical distribution of pelagic fish eggs and larvae off California and Baja California. US Fish Wildl.
Página 10 - Hydr., 36: 57-130. 1941. Age and growth of the rock bass, Ambloplites rupestris (Rafinesque), in Nebish Lake, Wisconsin.
Página 7 - This project covers the expenses of the two American members of the International Board of Inquiry for the Great Lakes Fisheries...
Página 7 - An investigation of the relative efficiencies of natural and artificial propagation of sockeye salmon (Oncorhynchus nerka) at Cultus Lake, British Columbia.
Página 57 - No. 23, 26 pp. 1948. A record of pilchard eggs and larvae collected during surveys made in 1939 to 1941. US Dept.
Página 60 - I would appreciate it. (The information referred to follows :) DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC Hon.