Nov. 7, 2012 Clownfish produce sounds to establish and defend their breeding status in social groups, but not to attract mates, according to research published November 7 in the open access journal PLOS ONE by Orphal Colleye and colleagues from the University of Liege, Belgium.
Previous studies showed that clownfish live in unique social groups, where the largest fish develops as a female, the second-largest is male, and the rest of the group remains gender neutral. If the largest fish dies, the rest of the group moves up a rank to replace the female and male.
This new research studies the importance of sounds made by the fish in this social structure, and finds that clownfish sounds are of two main kinds: aggressive calls made by charging and chasing fish, and sounds made by submissive fish. The authors also found that smaller fish produced shorter, higher frequency pulses of sound than larger fish.
According to the authors, these acoustic signals are especially significant for clownfish given the size-based hierarchy of their social structure.
Other social bookmarking and sharing tools:
The above story is reprinted from materials provided by Public Library of Science.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
- Orphal Colleye, Eric Parmentier. Overview on the Diversity of Sounds Produced by Clownfishes (Pomacentridae): Importance of Acoustic Signals in Their Peculiar Way of Life. PLoS ONE, 2012; 7 (11): e49179 DOI: 10.1371/journal.pone.0049179
Note: If no author is given, the source is cited instead.