Skip to main content

Table 2 Definitions of call variables measured for each Hyla leucophyllata call.

From: Multi-character perspectives on the evolution of intraspecific differentiation in a neotropical hylid frog

Variable Description
Prim. Dom. Frequency Frequency containing the most energy over the length of the primary note
Prim. FM Range Dominant frequency difference between the beginning and end of the primary note
Prim. FM Sweep Primary FM range divided by the primary note length
Sec. Dom. Frequency Frequency containing the most energy over the length of the first secondary note
Sec. FM Range Dominant frequency difference between the beginning and end of the first secondary note
Sec. FM Sweep Secondary FM range divided by the first secondary note length
Call Length Total length of call including all secondary notes
Inter-note Interval Time between the end of the primary note and beginning of the first secondary note
Prim. Note Length Length of primary note
Prim. Note & Inter-Note Inter. Length of primary note plus the inter-note interval
Prim. Note Rise Time from the beginning of the primary note until the maximum amplitude of the primary note is reached
Prim. Note Shape Primary note rise time divided by primary note length
Number of Prim. Pulses Number of pulses contained in the primary note
Prim. Pulse Length Length of first clearly discernible pulse of the primary note
Prim. Pulse + Inter-pulse Inter. Primary pulse length plus the time to the onset of the next pulse
Prim. Pulse Rise Time from the beginning of first clearly discernible pulse of the primary note to that pulse's maximum amplitude
Prim. Pulse Shape Primary pulse rise time divided by primary pulse length
Prim. Pulse Duty Primary pulse length divided by primary pulse +inter-pulse interval
Prim. Pulse Rate Number of primary pulses divided by the primary note length
Sec. Note Length Length of first secondary note
Sec. Note Rise Time from the beginning of the first secondary note until the maximum amplitude of the first secondary note is reached
Sec. Note Shape Secondary note rise time divided by secondary note length
Number of Sec. Notes Number of notes following the primary note
Number of Sec. Pulses Number of pulses contained in the first secondary note
Sec. Pulse Length Length of first clearly discernible pulse of the first secondary note
Sec. Pulse + Inter-pulse Inter. Secondary pulse length plus the time to the onset of the next pulse
Sec. Pulse Rise Time from the beginning of first clearly discernible pulse of the secondary note to that pulse's maximum amplitude
Sec. Pulse Shape Secondary pulse rise time divided by secondary pulse length
Sec. Pulse Duty Secondary pulse length divided by secondary pulse +inter-pulse interval
Sec. Pulse Rate Number of secondary pulses divided by the secondary note length