. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 352 R. T. BAUER Table 1 Size data for potential male mating partners placed with newly molted parturial females in mating experiments Potential Male Mating Partners Experiment SMP LMP MFP SMP vs. LMP LMP vs. MFP SMP vs. MFP ( ) () () () ( ( ) Size given is median carapace length (mm), with minimum and maxi- mum values in parentheses (n = 30 for all categories). LMP, large male-phase; MFP. non-parturial female-phase (simultaneous hermaphro- dite); SMP, small mal
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 352 R. T. BAUER Table 1 Size data for potential male mating partners placed with newly molted parturial females in mating experiments Potential Male Mating Partners Experiment SMP LMP MFP SMP vs. LMP LMP vs. MFP SMP vs. MFP ( ) () () () ( ( ) Size given is median carapace length (mm), with minimum and maxi- mum values in parentheses (n = 30 for all categories). LMP, large male-phase; MFP. non-parturial female-phase (simultaneous hermaphro- dite); SMP, small male-phase. 30). In another experiment, large MPs and MFPs (Table 1) were equally successful in obtaining the PFP copulation (Fig. 3B) (x2i = 0; P = l;n= 30). In the 19 replicates in which the large MP was smaller than the MFP. the MP and MFP gained the PFP copulation equally (n = 9, 10 respec- tively). Similarly, when the large MP was larger than the MFP (;i = 8 replicates), each gained the single PFP copu- lation in an equal number of replicates. In the small MP vs. MFP experiment (Table 1), MFPs obtained the PFP copu- lation in more replicates (Fig. 3C), but the difference is not statistically significant (x2, = ; P = ; n = 30). The copulated PFP produced a fertile brood of embryos in 87 of the 90 replicates of the three experiments. Correlations of large MP and FP relative abundance The effect of demographic influence (relative abundance of FPs) on the proportion of large MPs was investigated. From population samples. Spearman rank correlation coef- ficients (i\) were calculated for possible correlations be- tween % large MP and % FP. and %• very large MP and %• FP (Fig. 1). The null hypothesis of no correlation d\ = 0) between % large MP and % FP and between very large MP and % FP was accepted (r, = P » and i\ = , P > , respectively; n == 17 months in both tests). FP to MP se.\ change experiment This experiment tested the hypothesis that FPs
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