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Page 4753, results 118801 - 118825

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Waterbird mortality from botulism type E in Lake Michigan: An update
Christopher J. Brand, Ruth M. Duncan, Scott P. Garrow, Dan Olson, Leonard E. Schumann
1983, The Wilson Bulletin (95) 269-275
Three outbreaks of botulism type E occurring in waterbirds on Lake Michigan since autumn 1976 are discussed. Natural ingestion of food containing type E toxin by Ring-billed Gulls (Larus delawarensis) and the presence of type E toxin in blood from moribund gulls were demonstrated. Concurrent presence of type C and...
Temporal patterns of seed use and availability in a guild of desert ants
Patricia Mehlhop, Norman J. Scott Jr.
1983, Ecological Entomology (8) 69-85
1Temporal patterns of seed use were studied from late winter to autumn in three species of seed-harvesting ants in the Sonoran Desert. Measures of effective foraging activity, dietary niche breadth and dietary niche overlaps were obtained each month and were tested for correlation with estimates of the...
Inbreeding in fish populations used for aquaculture
Harold L. Kincaid
1983, Aquaculture (33) 215-227
The theoretical causes of inbreeding depression are reviewed. Studies to measure depression at a series of inbreeding levels in rainbow trout populations using the method of inbred-outbred half-sib families are discussed. While the actual depression estimates varied widely between populations and inbreeding levels, significant levels of depression were found in...
Effect of temperature on production of tiger muskellunge in intensive culture
J. W. Meade, W. F. Krise, T. Ort
1983, Aquaculture (32) 157-164
Tiger muskellunge (Esox masquinony × E. lucius) juveniles were reared at constant temperatures in the temperature range 14–28°C. For fish 3–4 cm long, growth, production and feed conversion efficiency were greatest at 20–22°C. Survival was reduced and unaccountable mortality (cannibalism index) was greatest at 24°C. Growth per unit of temperature...
Growth and survival of Atlantic salmon fed semimoist or dry starter diets
C. A. Lemm
1983, Progressive Fish-Culturist (45) 72-75
Growth and survival were compared for first‐feeding fry of Atlantic salmon (Salmo salar) fed a closed‐formula commercial preparation, BioDiet, or U.S. Fish and Wildlife Service high nutrient density diets 398 or 406 for 14 weeks. Growth of fry fed BioDiet for 2, 3, 4, or 6 weeks from first feeding...
Salmonella enteritidis isolated from an eared grebe (Podiceps nigricollis)
Ruth M. Duncan, Richard K. Stroud, Louis N. Locke
1983, Journal of Wildlife Diseases (19) 63-64
The reported prevalence of salmonellosis in wild birds is relatively low, though the number of species of birds reported as having the disease or being carriers of the organism is increasing (Faddoul et al., 1966, Avian Dis. 10: 89- 94). The course of the disease in birds ranges from acute...
Factors affecting dietary requirement and deficiency signs of L-tryptophan in rainbow trout
H. A. Poston, G. L. Rumsey
1983, Journal of Nutrition (113) 2568-2577
Two experiments were conducted to determine the concentration of dietary tryptophan needed for optimal growth and survival of fingerling rainbow trout (Salmo gairdneri), to characterize signs of tryptophan deficiency, and to ascertain the effects of niacin on deficiency signs. Test diets containing either hydrolyzed or intact casein were fed with...
Serological comparison of selected isolates of Aeromonas salmonicida ssp. Salmonicida
G.B. Hahnel, R. W. Gould, E.S. Boatman
1983, Journal of Fish Diseases (6) 1-11
Eight isolates of Acronionus salmonicida ssp. salmonicida were collected during furunculosis epizootics in North American Pacific coast states and provinces. Both virulent and avirulent forms of each isolate, confirmed by challenge and electron microscopy, were examined. Serological comparisons by cross-absorption agglutination tests revealed no serological differences between isolates. Using...
Research note: Isolation of a herpesvirus from a bald eagle nestling
D. E. Docherty, R.I. Romaine, R.L. Knight
1983, Avian Diseases (27) 1162-1165
Cloacal swabs collected from wild bald eagle nestlings (Haliaeetus leucocephalus) were tested for viruses. A virus isolated from one of these samples had a lipid coat and contained DNA. Electron microscopy confirmed that it was a herpesvirus. This appears to be the first report of a herpesvirus isolation from a...
Effective flow-through vacuum degasser for fish hatcheries
J. T. Fuss
1983, Aquacultural Engineering (2) 301-307
Since the fry of certain species of fish cannot tolerate even slight amounts of supersaturation, their water supplies must be degassed. Gas content can be reduced to subsaturated, sublethal levels by passing it through the vacuum degasser described here. The system includes a low-cost, flow-through unit easily capable of degassing...
The white pelican (Pelicanus erythrorhynchos) as a host of Pelecanectes apunctatus (Acarina: Hypoderidae)
B.N. Tuggle
1983, Journal of Parasitology (69) 1083-1083
Several species of nymphs from the family Hypoderidae have been reported from pelecaniform birds (Cerny, 1969, Folia Parasit. (Praha) 16:271-274; Pence, 1972, J. Med. Ent. 9: 435-438; Pence and Courtney, 1973, J. Parasitol. 59: 711-718); however, there are no records from the white pelican, Pelecanus erythrorhynchos. I report here the...