Paradoxically, a topic rarely discussed in scientific studies is voice communication. There is little information available on the key roles in vertebrate-specific parental care, mate attraction, and various other behaviors. about the origin of acoustic communication.
Comparative analyzes investigating at what stage in the evolutionary history of vertebrates the use of vocalizations as a communicative resource first appeared invariably opposes the absolute. Lack of information on some key groups that have not been extensively studied.
A team led by researchers from the University of Zurich, Switzerland, has studied exactly this small or unstudied species. The study resulted in evidence of 53 species from four main classes of terrestrial vertebrates: turtles, tuataras, caecilians and lungfish, pass vocal recordings and behavioral observations.
After all, when did acoustic communication appear?
As a starting point for investigating the evolutionary origins of acoustic communication in vertebrates, the researchers evaluated the acoustic abilities of the non-anuran amphibians (salamanders and caecilians), kelonians (turtles), and lungfish (dipnoics) identified in the study. mapping vocal communication in the vertebrate tree of life”.
Most of these vertebrates with lungs – known as choanate vertebrates – they make sounds through structures in their throats as they push air into their lungs. However, these sounds have been neglected by researchers and considered as sounds created by chance or simply to protect themselves from predators.
After cross-referencing their new findings with previously collected data on 1,800 other choanate species, the study authors concluded that: Acoustic communication has been evolving in these nose-breathing vertebrates for about 407 million years.. That is, voice communication “is at least as old as the last common ancestor of all choanae vertebrates.” [o peixe Eoactinistia foreyi]”, says study.
ARTICLE – Nature Communication – DOI: 10.1038/s41467-022-33741-8.
Source: Tec Mundo
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