Editing Spring peeper (section)

==== Mate choice ====
It has been established that the mating call of male spring peepers acts as an [[etiological]] isolating mechanism. As a potential agent of sexual selection, the mating call has many variations that may come into play as a major factor in mate choice by females. During mating, females monitor body size in correlation to the frequency of calls in an inverse matter.<ref name="Lykens-1987" /> The [[basilar papilla]] of the inner ear is responsible for decoding and detecting mating calls. The basilar papilla units within the female ear are tuned between 2100 and 3700&nbsp;Hz and are dependent on intensity. Females tend to select low-frequency calls over high-frequency ones because the calls at the lower end of the spectrum are easier to detect.<ref name="Lykens-1987" /> The calls of spring peepers are often repeated, which has been deemed essential concerning the evolution of the mate choice of females reacting to particular mating and courtship behavior.<ref name="ReferenceA"/>