7131

• UCREFRP Catalog Number: 7131
• Author: Danyulite, G. P. and Y. M. Maksimov
• Title: Characteristics of the optomotor reaction of fishes acted upon by a pulsed electric field
• USFW Year: 1974
• USFW - Doc Type: Journal of Ichthyology
• Copyright Material: YES

9
Mean numbers and weights for all classifications were obtained by
SAS PROC MEANS. PROC MEANS output also includes standard deviation,
minimum and maximum values, standard error of the mean and sum for each
variable.
Analyses of variance-were performed using SAS PROC GLM to test for
equality of mean weights for the species-age groups for each stratum and
for all strata combined and for the strata for each species-age group.
Because of the high variability in dispersions, rank analyses were also
performed. When significant differences among mean weights were indicated,
the Fisher least significant difference (FSD) method was used for multiple
comparisons (Koopmans 1981). The significant differences found by analysis
of variance and the subsequent FSD results are summarized in Results and
listed in Appendix B. The notation {A, B, C} > {D, E, F} is read A, B,
and C have significantly higher means than D, E, and F. The notation
{A, B, 0 > {B, C, D} indicates that A is significantly higher than D. but
neither is significantly different from B or C. All tests were made at a
5% level of significance.
Tables A-1 through A-3 present the following values: frequency of
occurrence, mean number of food item, mean weight of food item (mg),
percent of stomach content represented by mean weight, and percent of item
consumed in stratum represented by mean weight (meaningless for species-
age group tables). Table A-1 is for all strata combined. Table A-2 shows
results for each stratum. Table A-3 shows results for each species-age
group.