Table 2.

Percent of L. polyphemus collected from areas with one dominant daily tide, two daily tides, and microtides that expressed bimodal and unimodal tides during artificial tide cycles. Bold indicates the apparent higher percentage between “Unimodal” and “Bimodal” categories for animals of each source environment during each artificial tide.

Rhythm type	Artificial tide
	No tides		12.4-h tidal cycle		24.8-h tidal cycle
	Unimodal	Bimodal	Unimodal	Bimodal	Unimodal	Bimodal
One dominant daily tide	95%	5%	95%	5%	100%	0%
n = 21
τ± SEM	25.1 ±0.2	12.5	25.0 ± 0.2	12.3	24.6 ± 0.2	NA
Two daily tides n = 28	29%	68%	12%	88%	25%	75%
τ± SEM	25.0 ± 0.4	12.3 ±0.1	24.2 ± 0.6	12.2 ±0.1	24.6 ± 0.2	12.3±0.1
Microtides	100%	0%	14%	71%	100%	0%
n = 7
τ± SEM	25.7 ± 0.5	NA	24.5 ± 0.6	12.6 ± 0.2	24.3 ±0.1	NA