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New article in the Journal of Fish Biology, Vol 65(5)

Subject: New article in the Journal of Fish Biology, Vol 65(5)
From: Sonja Amoser <>
Date: Fri, 05 Nov 2004 10:43:11 -0800
M. C. P. Amorim, M. E. Knight, Y. Stratoudakis, G. F. Turner (2004):
 Differences in sounds made by courting males of three closely related 
 Lake Malawi cichlid species. Journal of Fish Biology, Volume 65(5),
 Abstract: Courtship sounds made by three sympatric cichlid species,
 Pseudotropheus zebra, P. callainos and an undescribed species known as P.
 'zebra gold' were recorded and compared to investigate the potential role of
 acoustic signals in mate choice. Sounds were emitted during 'quiver' and
 'circle' components of the male courtship display and consisted of rapidly
 repeated pulse units. Some sound variables differed significantly among
 species with P. callainos generally being separated from the other two
 species. This species produced sounds with higher peak frequency (for a
 given length) and lower number of pulses than P. 'zebra gold' and higher
 pulse durations than P. zebra. In addition, standard length was inversely
 related to peak frequency in both P. 'zebra gold' and P. callainos(this
 relation was not tested in P. zebra due to the small sample size). These
 differences might indicate different regimes of intraspecific sexual
 selection among the three species.
 Sonja Amoser, PhD Student
 University of Vienna, Institute of Zoology
 Althanstrasse 14, 1090 Vienna, Austria
 Phone: +43-1-4277-54467 oder +43-664-5006106 (private)
 Fax: +43-1-4277-54506

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