The following paper appeared in Volume 14 (1) of the journal Bioacoustics.
Reprints are available in PDF formats (ca 600 K); please send request to
[EMAIL PROTECTED]
Best regards
Simona Sanvito
P.S.: sorry for cross posting
======================
Sanvito, S. & Galimberti, F. 2003. Source level of male vocalizations in
the genus Mirounga: repeatability and correlates
Bioacoustics 14(1): 47-59.
ABSTRACT
Male vocalizations have an important role in mating tactics, breeding
strategies and sexual selection. Most studies of vocalizations were
concentrated on time and frequency domain, while the intensity of sound, an
important acoustic parameter that should be related to body size, was
almost completely ignored as a possible honest signal of resource holding
potential, and cue for mate choice. In this paper, we analyse the
repeatability, the correlations with age and size, and the relationship
with breeding status of source level (SL) of male vocalizations in the two
species of elephant seals (Mirounga leonina and M. angustirostris). We
found an high repeatability of SL, equal or higher than the repeatability
of frequency domain parameters estimated in a previous study. Southern
elephant seal males were significantly larger and produces significantly
more powerful vocalizations than northern males. Moreover, in each species
SL was related to age, body size, and breeding status of males, but
relationships were weak, and explained just a small proportion of variance
of SL. We conclude that, although SL may be an honest signal of gross
differences of RHP, it is not, by itself, a good candidate for the
transmission of high resolution information on individual phenotype. A
combination of SL and frequency components could be, on the contrary, an
effective way to communicate RHP.
----------------------------
Simona Sanvito, PhD candidate
Biology Dept.
Memorial University of Newfoundland
St. John's, NF, A1B 3X9
CANADA
"There are some enterprises in which a
careful disorderliness is the true method"
Herman Melville, Moby Dick
-------
>From Fri, 22 Aug 2003 09:43:05 -0700
From: Dave Mellinger <>
To:
Date: Fri, 22 Aug 2003 09:43:05 -0700
Subject: [resend] Recent paper on elephant seal vocalizations
Message-Id:
Subject: Recent paper on elephant seal vocalizations
Date: Fri, 22 Aug 2003 11:10:49 EDT
Dear list members,
The following paper appeared in Volume 14 (1) of the journal Bioacoustics.
Reprints are available in PDF formats (ca 600 K); please send request to
[EMAIL PROTECTED]
Best regards
Simona Sanvito
P.S.: sorry for cross posting
======================
Sanvito, S. & Galimberti, F. 2003. Source level of male vocalizations in
the genus Mirounga: repeatability and correlates
Bioacoustics 14(1): 47-59.
ABSTRACT
Male vocalizations have an important role in mating tactics, breeding
strategies and sexual selection. Most studies of vocalizations were
concentrated on time and frequency domain, while the intensity of sound, an
important acoustic parameter that should be related to body size, was
almost completely ignored as a possible honest signal of resource holding
potential, and cue for mate choice. In this paper, we analyse the
repeatability, the correlations with age and size, and the relationship
with breeding status of source level (SL) of male vocalizations in the two
species of elephant seals (Mirounga leonina and M. angustirostris). We
found an high repeatability of SL, equal or higher than the repeatability
of frequency domain parameters estimated in a previous study. Southern
elephant seal males were significantly larger and produces significantly
more powerful vocalizations than northern males. Moreover, in each species
SL was related to age, body size, and breeding status of males, but
relationships were weak, and explained just a small proportion of variance
of SL. We conclude that, although SL may be an honest signal of gross
differences of RHP, it is not, by itself, a good candidate for the
transmission of high resolution information on individual phenotype. A
combination of SL and frequency components could be, on the contrary, an
effective way to communicate RHP.
----------------------------
Simona Sanvito, PhD candidate
Biology Dept.
Memorial University of Newfoundland
St. John's, NF, A1B 3X9
CANADA
"There are some enterprises in which a
careful disorderliness is the true method"
Herman Melville, Moby Dick
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