. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BEHAVIOR OF SEA CATFISH 367 06 04 02 O V , t(mos) X,=[1 23061-05331] .11 mos FIGURE 4. Observed and fitted values of cosine. A',, of monthly mean orientation vectors for 80 sea catfish (Arius felis) plotted against month, t, of observation. Parameters of the cyclical model used to fit the data (mean level, semi-amplitude, frequency, and phase angle, respectively) and period of oscillation are also given. Open squares indicate more than one data point. The apparent tendency of the monthly mean vect
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BEHAVIOR OF SEA CATFISH 367 06 04 02 O V , t(mos) X,=[1 23061-05331] .11 mos FIGURE 4. Observed and fitted values of cosine. A',, of monthly mean orientation vectors for 80 sea catfish (Arius felis) plotted against month, t, of observation. Parameters of the cyclical model used to fit the data (mean level, semi-amplitude, frequency, and phase angle, respectively) and period of oscillation are also given. Open squares indicate more than one data point. The apparent tendency of the monthly mean vectors of sea catfish to oscillate non-randomly with time (Fig. 2) was confirmed by the results of the Spearman rank correlation and the Wald and Wolfowitz serial correlation tests performed on the rectangular coordinates (, the weighted sines and cosines) of the vectors. Neither the time series of sines (rs = ) nor cosines (rv = ) reject the null hypothesis, indicating nonlinearity in the data ( =: ±). The subsequent serial correlation tests indicate significant oscillation (Rj\\ : ±), with R} and R] = for yt and A't, respectively. Similar statistical results confirm non-random oscillation in the observed monthly mean activity of the fish with rs = and R, == Table IV lists certain _parameter combinations which yield minimal SSE for the cyclical models of the Yt and A't components of the monthly mean orientation vectors and for the cyclical model of monthly mean activity of sea catfish. Although 10 0) O) (0. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Red
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
