3 research outputs found
Comparative analysis of sound production between the bighead goby Ponticola kessleri and the round goby Neogobius melanostomus: Implications for phylogeny and systematics.
Divergence in acoustic traits between closely
related species can be explained by phylogenetic history.
In gobies, phylogenies reconstructed with acoustic
signals primarily overlap with studies based on morphological
or molecular data. Here, sound production of the
two Ponto-Caspian gobies, Neogobius melanostomus
and Ponticola kessleri, was recorded in controlled conditions
and compared to determine the degree of interspecific
acoustic variation across benthophilin gobies.
Both species produced tonal-like sounds characterized
by unique temporal and spectral properties during agonistic
and reproductive intraspecific interactions, while
the acoustic comparison revealed that the vocalizations
of these two species differ in almost every acoustic
property. N. melanostomus vocal structure was
characterised by short (c. 100 ms), low-frequency (<
100 Hz) tonal sounds repeated at a relatively faster rate,
while P. kessleri sounds appeared as a broadband, downward
frequency modulated longer calls (c. 450 ms)