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New bioacoustic articles in J. Fish Biology

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Subject: New bioacoustic articles in J. Fish Biology
From: "Sonja Amoser" <>
Date: Wed, 13 Dec 2006 11:33:21 +0100
J. P. Lagardere, A. Mariani (2006): Spawning sounds in meagre
Argyrosomus regius recorded in the Gironde estuary, France. Journal of
Fish Biology 69, Issue 6, 1697-1708

Abstract: During their spawning period (June to mid-July) in the
Gironde estuary, meagre Argyrosomus regius produce two distinct
sounds: regular long grunts, the most common calls, and sometimes also
short grunts. It is suggested that long grunts serve the formation of
spawning aggregations and short grunts announce the beginning of
courtship behaviour. The meagre's long grunts include long series of
30-112 closely spaced pulses placed into call units. Each pulse
produces multiple and rapidly decaying swimbladder vibrations with a
dominant frequency varying between 336 and 444 Hz.


R. S. Brown, D. R. Geist, K. A. Deters, A. Grassell (2006): Effects of
surgically implanted acoustic transmitters >2% of body mass on the
swimming performance, survival and growth of juvenile sockeye and
Chinook salmon.  Journal of Fish Biology 69, Issue 6, 1626-1638

Abstract: The influence of surgical implantation of an acoustic
transmitter on the swimming performance, growth and survival of
juvenile sockeye salmon Oncorhynchus nerka and Chinook salmon
Oncorhynchus tshawytscha was examined.  The transmitter had a mass of
0.7 g in air while sockeye salmon had a mass of 7.0-16.0 g and Chinook
salmon had a mass of 6.7-23.1 g (a transmitter burden of 4.5-10.3% for
sockeye salmon and 3.1-10.7% for Chinook salmon).  Mean critical
swimming speeds (Ucrit) for Chinook salmon ranged from 47.5 to 51.2 cm
s1 [4.34-4.69 body lengths (fork length, LF) s1] and did not differ
among tagged, untagged and sham-tagged groups. Tagged sockeye salmon,
however, did have lower Ucrit than control or sham fish. The mean
Ucrit for tagged sockeye salmon was 46.1 cm s1 (4.1 LF s1), which was
c. 5% less than the mean Ucrit for control and sham fish (both groups
were 48.6 cm s1 or 4.3 LF s1). A laboratory evaluation determined that
there was no difference in LF or mass among treatments (control, sham
or tag) either at the start or at the end of the test period,
suggesting that implantation did not negatively influence the growth
of either species. None of the sockeye salmon held under laboratory
conditions died from the influence of surgical implantation of
transmitters. In contrast, this study found that the 21 day survival
differed between tagged and control groups of Chinook salmon, although
this result may have been confounded by the poor health of Chinook
salmon treatment groups.


M. C. P. Amorim, R. O. Vasconcelos, J. F. Marques, F. Almada (2006):
Seasonal variation of sound production in the Lusitanian toadfish
Halobatrachus didactylus. Journal of Fish Biology 69, Issue 6,

Abstract: Seasonal variation of sound production, which includes
boatwhistles, grunts, croaks and double croaks, was studied in the
Lusitanian toadfish Halobatrachus didactylus. Boatwhistles were
emitted during the mating season in contrast with the other sound
types, which were emitted all year round.


Sonja Amoser

==========================================================Sonja Amoser, PhD 
University of Vienna, Dept. of Behavior
Althanstrasse 14, 1090 Vienna, Austria
Phone: +43-1-4277-54467 oder +43-664-5006106 (private)
Fax: +43-1-4277-54506

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