Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Kenneth R. John"'
Autor:
Roger B. Johnson, Audrey K. Tsao, Kenneth R. John, Russel A. Betcher, Michelle A. Tucci, Hamed A. Benghuzzi
Publikováno v:
Anatomical Record; Feb2005, Vol. 282 Issue 2, p147-156, 10p
Autor:
Kenneth R. John
Publikováno v:
Ecology. 40:564-571
Two Ocean Lake, which was annexed to Teton National Park in 1950, was reported by long-time residents of the area and by the Wyoming Game and Fish Commission to have experienced a tremendous increase in chub which followed a sharp decline in trout, S
Autor:
Kenneth R. John
Publikováno v:
Journal of the Fisheries Research Board of Canada. 21:1453-1473
The schooling behavior of both light- and dark-adapted Astyanax mexicanus (Fillipi) was observed under sudden changes in illumination in the range 10−7 to 100 ft-c at different times in the diel cycle. In darkness the fish were dispersed, swam slow
Autor:
Kenneth R. John, Arthur D. Hasler
Publikováno v:
Limnology and Oceanography. 1:176-194
Rather suddenly, in the early 1940's, the cisco in Lake Mendota became scarce. The evidence suggested that the decline was caused by heavy summer mortalities in 1940 and 1941, but further study indicated that the summer mortalities had involved mainl
Autor:
Kenneth R. John
Publikováno v:
The Progressive Fish-Culturist. 16:70-74
Autor:
David M. Gring, Kenneth R. John
Publikováno v:
Journal of the Fisheries Research Board of Canada. 25:373-381
Bluegills, Lepomis macrochirus, entrained to natural or artificial light–dark cycles, were confined to constant darkness for varying periods up to 42 hr at temperatures in the range 20–25 C. The retinomotor activities were determined from histolo
Autor:
Kenneth R. John, Michael Haut
Publikováno v:
Journal of the Fisheries Research Board of Canada. 21:591-595
Dark-adapted Astyanax exposed to light at 5 ft-c schooled in about 15 sec during the day, but only after a lapse of about 6 min at night. This behavioral rhythm was closely synchronized with the natural diel cycle and was correlated with a retinomoto
Autor:
Lewis H. Kaminester, Kenneth R. John
Publikováno v:
Physiological Zoology. 42:60-70
Publikováno v:
The Biological bulletin. 132(2)
1. The goldfish retina shows a persistent circadian rhythm. In constant darkness for three days, the cones continued to shift positions in synchrony with the diel cycle. The amplitude of the shift decreased after the first night. A maximally dark-ada
Autor:
David Fenster, Kenneth R. John
Publikováno v:
American Midland Naturalist. 93:123
It was recognized at the outset that growth rates of tad- poles are retarded in proportion to the density of the population and that psychological stress is the major cause for retardation. This paper shows that the rate of growth is not dependent si