. The Canadian field-naturalist. 412 The Canadian Field-Naturalist Vol. 104. Table I. Analysesofcovarianceof length-fecundity and weight-fecundity regressions of 50 Northern Redbelly Dace, 16 Finescale Dace, and 30 hybrids from Upper Pierre Grey Lake, 1985. June July Date of Collection Figure 5. Trends in ova diameter during 1985 spawning period for Northern Redbelly Dace (E), Finescale Dace (N), and their hybrids (H) from Upper Pierre Grey Lake. Data represent sample means of ova diameter. Fecundity The relationship of fecundity to standard length for the two species and the hybrids is descri
. The Canadian field-naturalist. 412 The Canadian Field-Naturalist Vol. 104. Table I. Analysesofcovarianceof length-fecundity and weight-fecundity regressions of 50 Northern Redbelly Dace, 16 Finescale Dace, and 30 hybrids from Upper Pierre Grey Lake, 1985. June July Date of Collection Figure 5. Trends in ova diameter during 1985 spawning period for Northern Redbelly Dace (E), Finescale Dace (N), and their hybrids (H) from Upper Pierre Grey Lake. Data represent sample means of ova diameter. Fecundity The relationship of fecundity to standard length for the two species and the hybrids is described by the following equations: P. COS log F = + log L P. neogaeus log F + log L Hybrid log F = + log L where F - fecundity and L = standard length. Analysis of covariance shows no significant difference (P > ) between the three regressions in either intercepts or slopes (Table 1). The relationship of fecundity to total body weight is described by the following equations: P. eos log F = + log W P. neogaeus log F = + log W Hybrid log F = + log W where F = fecundity and W = total body weight. Analysis of covariance shows no significant difference (P > ) between the three regressions in intercepts, but shows significant difference ( slope > P. eos + Hybrid mtercept > slope > P. neogaeus + Hybrid mtercept > slope > WEIGHT-FECUNDITY REGRESSIONS P. eos + P. neogaeus intercept > slope slope > P. neogaeus + Hybrid intercept > slope > 1958 (New 1962). In Minnesota, Stasiak (1972) observed a separation of the spawning season between the two species; Finescale Dace were observed spawning in late April and early May, but Northern Redbelly Dace did not begin to spawn until early June. Becker (1983) stated that in Wisconsin, spawning of Finescale Dace occurs from April to Ju
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