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1Mating Songs of Frogs
The calling or
singing of frogs plays an important role in their
rep
roduction
—
specifically, in
helping individuals find and select mates. Sound
has
many advantages as a communication sounds are
broadcast, the
auditory receptors do not need to be in
a particular orientation relative to the
sound source in order to receive
stimulation. Loud songs, particularly those
made by choruses of frogs calling
together, can travel long distances and thus
attract distant travel around large
obstacles. These advantages are
not found in
the visual modality,where the receiver must be
attentive and have
its visual receptor
orientated in the correct r, most frogs and
toads breed at night, when light levels
are low but sounds can be easily
localized. We
can conclude that auditory signals are used by
frogs and toads
because they can be
effective over long distances at night.
Male frogs do most of the courtship
calling. Other male frogs can respond
by adding their
voices to form a calling chorus. Male frogs can
also vocalize to
each other as part of
aggressive sive calls can be distinct from
the
advertisement calls used to attract females.
Females can respond to male
songs by moving
toward the sound source or by selecting certain
males as
reproductive partners. In some species
females also respond to males by calling:
receptive pairs can even perform duets.
Predators may also cue in on calling
frogs as
potential songs contain several potentially
important pieces
of information about the
calling , sound amplitude can indicate the