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At least 415 records · Page 23Linked to original sources
USGS1939

Save the Great Lakes fisheries!

During the winters of 1939-40 and 1940-41, two experiments involving 456 bobwhite quail, were conducted at the Patuxent Research Refuge, Bowie, Maryland, to determine the palatability and comparative feeding value of 20 common wild quail-foods when offered as a part of a maintenance diet....2. Mortality was low on all diets, the highest occurring on that containing a mixture of bayberry and wax myrtle fruits. On all diets the birds showed increases in weight during the early winter. These gains were better maintained by birds on the wild foods than those on control diets composed entirely of cultivated feedstuffs.....3. There were statistically significant differences between the quantities of the various diets eaten.....4. For palatability and acceptability, seeds of common ragweed (Ambrosia artemisiifolia) and of shrub lespedeza (Lespedeza bicolor) were the preferred wild foods.....5. It is concluded that pen-reared bobwhite quail can be maintained successfully through winters in the vicinity of Washington, D. C., on diets containing 50 per cent of any one of the wild foods listed and 50 per cent of a high-caloric commercial seed mixture with yellow corn as the principal cereal.....6. The results of these 'cafeteria' studies, although interesting and indicative of the preferences of quail in confinement, do not necessarily represent selections that might be. made by bobwhites in the wild.

Outdoor American↗
USGS1967

Fishery picture changing in Lake Erie: pollution a major factor, survey shows

The objectives of these cruises of the research vessel Musky II in 1965 and 1966 were: To determine changes in the fish population and environmental conditions in recent years; to determine if the geographic and depth distributions of certain species of fish in the summer differed from that in the autumn; and, to obtain much-needed information on the selectivity of experimental gill nets, particularly for the fresh-water drum (sheepshead) and the walleye. In general, the kinds of fishes, and the geographic and depth distribution of the catches in the eastern basin in June, 1966 did not differ greatly from those in September of the preceding year. The numbers of some fishes, however, had changed- the so-called trash fish were more abundant and the more desirable commercial species were less numerous than in 1965. Yellow perch was by far the most abundant species in the catches. Other fishes taken frequently included white suckers, stonecats, white bass, smelt, and walleyes. Sizeable populations of small-mouth bass and fresh-water drum were also found.

Conservationist↗