Rh females had higher call intensities (p = 0.048; mean difference 8 dB) and also used on average 3 kHz higher call frequencies (t-test, p = 0.035) than Rh males.
They found latitudinal variation - animals from the north being larger and emitting lower call frequencies and those from the south smaller and emitting higher call frequencies.
One of them, Rhinolophus mehelyi, uses a higher call frequency than predicted by allometry and its call frequency overlaps with that of the other two (compare Fig. 1).
In the present study, we investigated whether R. mehelyi produces calls of especially high intensity and thereby compensates for the decrease in detection distance that results from the species' deviation from allometry to a higher call frequency.
Among MP users, the risk of headache was also increased in those who had longer daily call duration and higher daily call frequency.
Whether the higher call intensities in Rh females play a role for communication or serve to (over) compensate the range loss resulting from the higher female call frequency (compare [70]) clearly deserves further study.
Louder noise, i.e., larger BFN20 amplitudes, caused higher rises in call frequencies up to a maximum of 171 Hz at a BFN20 amplitude of 100dB SPL (p < 0.001, df = 3, Χ = 2809.3, Kruskal-Wallis test; Fig. 1B).
Phone calls and text messages are known to occur primarily between family members and acquaintances, with high call duration and frequency indicating a strong relationship [11].
Call frequencies were higher than 90% for all markers and minor allele frequencies ranged from 1.3%to49.7%7%.
As Foss explains to HuffPollster, he builds that list from three sources: Numbers that have been the source of repeated consumer complaints logged with the FTC do-not-call service, and from identifying "high frequency calling patterns" in incoming calls to users of his service and to a "honeypot" of 174,000 phone lines he maintains solely for the purpose to monitoring incoming calls.
