. Bulletin. Science; Natural history; Natural history. VOCALIZATIONS OF CHIPMUNKS 129 H 12 8 LEMETRICS CO. PINE. YPE B/65 SONAGRAM SS 4. B i I KAY ELEMETRICS CO. Pl( Ifiilirf. i% M,n%-mm i .1 .2 .3 TIME (sec) Fig. 3. Sonagrams of chips from Tamias obscurus in the San Bernardino Mountains (A), Tamias obscurus in the San Jacinto Mountains (B), and Tamias merriami in the San Jacinto Mountains (C). chip, and highest and lowest frequencies of terminal pulse, if present. Inter- population variation was analyzed using Duncan's Multiple Range Test and anal- ysis of variance of log transformed data usi
. Bulletin. Science; Natural history; Natural history. VOCALIZATIONS OF CHIPMUNKS 129 H 12 8 LEMETRICS CO. PINE. YPE B/65 SONAGRAM SS 4. B i I KAY ELEMETRICS CO. Pl( Ifiilirf. i% M,n%-mm i .1 .2 .3 TIME (sec) Fig. 3. Sonagrams of chips from Tamias obscurus in the San Bernardino Mountains (A), Tamias obscurus in the San Jacinto Mountains (B), and Tamias merriami in the San Jacinto Mountains (C). chip, and highest and lowest frequencies of terminal pulse, if present. Inter- population variation was analyzed using Duncan's Multiple Range Test and anal- ysis of variance of log transformed data using an SPSS (Nie et al. 1975) program. Results Sonagrams of the chips of Tamias obscurus and T. merriami were both char- acterized by a symmetrical inverted "V" shape (Fig. 3). Based on analysis of variance (df = 4) of both species in all populations sampled, Tamias obscurus has a unique vocal pattern. Tamias obscurus and T. merriami differ in the frequency of the origin of the upsweep {P < .0001; Table 1), top of the upsweep {P < .0001), bottom of the downsweep {P < .005), and in the length of the chip in seconds {P < .0001; Table 2). Vocalizations of the three populations of Tamias merriami were distinguishable based on the length of the chip. Tamias merriami (Col) was different from the other populations of T. merriami primarily in the length of the chip and in the top of the upsweep (Table 3; Duncan's Multiple Range Test; P < .05). Tamias obscurus in both the San Bernardino and the San Jacinto mountain ranges differed from T. merriami in the San Bernardino Mountains primarily in the length of the chip, and from T. merriami in Columbia (Col) by the top of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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