Books by "John M. Neuhold"
4 books found
In epizootics of channel catfish virus diseasse (CCVD) at four widely separated fish farms in 1968, affected fry and fingerlings spiraled, hung in a vertical position with head at the surface, or were distressed. In various combinations were edema, hemorrages, and anemia. The disease had a peracute to acute course, and stress to the fish preceded most epizootics. The virus induced formation of syncytial cells in affected cultures, which is considered at present to be of diagnostic significance. Secondary bacterial infections were found in fish with CCVD. Columnaris infection masked the symptoms of the virus disease.
This history of the salmon in the Great Lakes describes the decline and extinction of the Atlantic salmon in Lake Ontario in the 1800's; the failure to establish, by salmon culture, permanent or sizable populations of Atlantic or Pacific salmon in any of the Great Lakes in 1867-1965; and the success of plantings of coho and chinook salmon in the Great Lakes, 1966-1970 -- particularly in Lake Michigan.
Studies of Estuarine Dependence of Atlantic Coastal Fishes
by Sandy Hook Marine Laboratory, John R. Clark
1969
In 1965, the Sandy Hook Marine Laboratory began research on the extent to which migratory fishes of the Atlantic coast depend on estuaries as essential habitat during the early period of their lives. The final goal is to determine the effects on fishes of the physical disruption and pollution of estuaries that have accompanied coastal development of the last two decades.
Naturalists and recreational anglers will welcome the paperback edition of this comprehensive volume, first published in 1986, which describes every species in the lakes and streams of the Great Basin. Includes an updated checklist of established species, discussion of threatened and endangered species, glossary, bibliography, and index.