Table 4 in Courtship and Mating Behavior of the Rare, Rock-Crevice Dwelling Salamander Plethodon petraeus with a Review for Eastern North American Woodland Salamanders (Amphibia: Plethodontidae)

Table 4. Pearson Product Moment correlation coefficients between the duration and frequency of some behaviors during the preliminary (pre-TSW) phase of courtship in the salamander Plethodon petraeuS. Data are from 20 individually unique pairs that engaged in ten incomplete courtships, which did not proceed to a tail-straddling walk (TSW), and ten complete courtships with TSW and spermatophore deposition. Duration ¼ minutes per pre-TSW hour. Frequency ¼ occurrences per pre-TSW hour. Apart ¼ periods when salamanders were more than about 2.5 cm apart after their initial encounter. Close ¼ periods when salamanders were within about 2.5 cm of each other but not in sustained contact via the mental gland. Dance/shuffle ¼ foot dance and foot shuffle. MG ¼ mental gland. See text for description of behaviors. C Coefficient for complete courtships, I coefficient for incomplete courtships, A coefficient for all courtships when both incomplete and complete courtships had very similar correlations. * P, 0.02, ** P, 0.01, *** P, 0.001.
Duration of period or behaviorApartCloseMGDiscontinuous, female-first TSWContinuous, female-first TSW(. 2.5 cm)(2.5 cm)slidingMale frequencyDance/shuffleI 0.922***A 0.528*I 0.734*MG poppingI 0.748*MG swipeC 0.704*Mouth graspI 0.856**Snout underA 0.595**Female frequencyTail flexI 0.806**Undulate tailA 0.751***