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Bioacoustics papers in Behav Ecol Sociobiol

Subject: Bioacoustics papers in Behav Ecol Sociobiol
From: Dave Mellinger <>
Date: Wed, 19 Mar 2003 10:44:22 -0800
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Date: Wed, 19 Mar 2003 03:54:53 EST<br>
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 Bioacoustics papers in <i>Behavioral Ecology and Sociobiology<br>
 </i>Volume <b>53</b> Number 4 (March 2003)<br>
 * <font color="ffff,0000,0000">Michael J. Smith and J. Dale Roberts <br>
 Call structure may affect male mating success in the quacking frog<br>
 <i>Crinia georgiana</i> (Anura: Myobatrachidae) <br>
 Behav Ecol Sociobiol (2003) 53: 221-22. <br>
 </font><b>Abstract</b>  We investigated the relationship between mating 
 male size and variation in the advertisement call in the frog Crinia<br>
 georgiana under field conditions. Mating success in 91 males was<br>
 determined by following 32 females as they moved through the<br>
 chorus. Our analyses indicated that successful males had a higher<br>
 number of pulses in the first note and/or called at a higher rate.<br>
 However, we did not detect a significant relationship between mating<br>
 success and dominant frequency, the property that varied most<br>
 strongly with body size, suggesting that size is not an important<br>
 influence on mate choice in this species. Even so, smaller males were<br>
 more successful if they called at a higher rate whereas larger males<br>
 were more successful if they had more pulses in their first note.<br>
 Accordingly, males of different size may use different calling tactics to<br>
 attract females. These results provide a framework for further<br>
 experimental studies aimed at investigating the independent impacts of<br>
 both inter- and intra-sexual selection on the advertisement call and<br>
 body size of C. georgiana.<br>
 * <font color="ffff,0000,0000">Susanne Shultz, Charlotte Faurie and Ronald Noë 
 Behavioural responses of Diana monkeys to male long-distance calls:<br>
 changes in ranging, association patterns and activity <br>
 Behav Ecol Sociobiol (2003) 53: 238-245.<br>
 </font><b>Abstract</b>  Although much is known about the relationship 
 vigilance, group size and predation risk, behavioural responses to<br>
 predation risk and their resultant costs are less clear. We  investigated<br>
 the response of Diana monkeys to increased predation risk by looking<br>
 at behavioural changes associated with male long-distance calls,<br>
 which are reliably given to certain predators. After male long-distance<br>
 calls, group spread and nearest-neighbour distance decreased whilst<br>
 travel and association rates for the group increased. The average<br>
 height and exposure level of individuals in the group did not change<br>
 after calls. Individual Diana monkeys changed their behaviour and<br>
 were more likely to be vigilant or travel and less likely to engage in<br>
 social or resting behaviours after long-distance calls. In addition,<br>
 movement rates increased with the number of species the Diana<br>
 monkeys were associated with. Diana monkey long-distance calls<br>
 facilitate the joining of groups of other species. Black and white<br>
 colobus and lesser spot-nosed monkeys were more likely to be in an<br>
 association following a long-distance call than before. Behavioural<br>
 responses, such as increased travel or association rates, that reduce<br>
 foraging efficiency are interpreted as evidence of a non-lethal impact<br>
 of increased predation risk.<br>
 Jérôme SUEUR<br>
 Ecole Pratique des Hautes Etudes,  Biologie et Evolution des Insectes<br>
 Muséum national d'Histoire naturelle, 45 rue Buffon, 75005 Paris - France<br>
 Ph. 00 33 1 40 79 31 57 / Fx. 00 33 1 40 79 36 99 / Ml. [EMAIL PROTECTED]<br>

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