Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41763
The American Fisheries Society
In the course of studies designed to determine the calcium and phosphorus requirements of breeding bobwhite quail, it was found that best results were obtained when the Ca/P ratio in the diet was approximately 2.3:1. Variations in the Ca/P ratio produced significant differences in results when the level of phosphorus in the diet was 0.75%, but the differences were less marked when the level of ph
Authors
James W. Moffett
Attack on the sea lamprey: a report of progress
Abstract has not been submitted
Authors
James W. Moffett
Age and growth of the whitefish Coregonus clupeaformis, of Munising Bay, Lake Superior
This study is based on a sample of 415 whitefish collected in 1953 from an unexploited population in Munising Bay, Lake Superior. Gill-net and trawl catches had different length-frequency distributions and age compositions, but estimates of growth from the two catches were very similar. The body-scale relation is a straight line with an intercept of 1.5 inches. Weight of Munising Bay whitefish
Authors
Thomas A. Edsall
The vertical migration of Mysis relicta in Lakes Huron and Michigan
During the day Mysis relicta could be taken only near the bottom of Lakes Huron and Michigan. In the evening they migrated into the overlying strata as the surface light intensity decreased from 15 to 1 foot-candles. Frequently the mysids migrated through the metalimnion when first ascending, but later in the night the majority occurred in or immediately below this layer. As the length of day decr
Authors
Alfred M. Beeton
A "virus" disease of chinook salmon
Epizootics among chinook salmon fingerlings at the Coleman National Fish Hatchery have occurred periodically since 1941. A virus or virus-like filterable agent has been demonstrated to be the causative agent of this disease.
Authors
A. J. Ross, R.R. Rucker
Skin lesions on black ducks and mallards caused by chigger (Wormsia strandtmani Wharton 1947)
No abstract available.
Authors
G. M. Clark, Vernon D. Stotts
The life-cycle of the digenetic trematode, Proctoeces maculatus (Looss, 1901) Odhner, 1911 (Syn. P. rubtenuis [Linton, 1907] Hanson, 1950), and description of Cerceria adranocerca n. sp
The genus Proctoeces was erected by Odhner ( 191 1) to contain Distonium maculatuni Looss, 1901, from Labrus merula and Crenilabrus spp. at Triest. Odhner had found the parasite in Blennius ocellaris at Naples. One adult specimen from Chrysophrys bifasciata and two immature specimens from lulis lunaris taken in the Red Sea, were described as a new species, Proctoeces erythraeus. Dawes (1946) liste
Authors
H. W. Stunkard, J. R. Uzmann
Fluctuations in the commercial fisheries of Saginaw Bay, 1885-1956
No abstract available.
Authors
Ralph Hile, Howard J. Buettner
Dry diets for Chinook salmon
The purpose of this paper is to present the results obtained with seven different diets used as starting diets of chinook salmon fry.
Authors
Walter E. Neilson, J. J. Mazuranich