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3 results for “duet code”
Duet codes do not enhance neighbour recognition in two closely related species of neotropical wrens
<p class="Body"><span><span><span><span><span><span><span><span><span><span>Numerous studies have shown that territorial animals exhibit less aggression in response to neighbours than to strangers, a phenomenon known as <i>dear enemy effect</i>. The influence of acoustic features, such as song type sharing and repertoire sizes, in neighbour recognition has been widely documented in male songbirds. However, few studies have focused on duetting species, and particularly on those where pairs have pair-specific duet codes (consistent associations of their individual phrase types). Given that each pair in the population can have a unique repertoire of duet types, duet codes have been hypothesized to enhance discrimination. In this context, we tested for evidence of neighbour recognition and duet code discrimination in two closely related species of neotropical wrens, the riverside wren, <i>Cantorchilus semibadius</i>, and the canebrake wren, <i>C. modestus zeledoni</i>. Although both species have moderately large repertoires, riverside wrens have higher levels of phrase type and duet type sharing across the population. We compared the approach and vocal responses of focal pairs to three playback treatments: neighbours' correct duet type, neighbours' incorrect duet type, and a strangers' duet type. We found that riverside wrens displayed a stronger response to the strangers' playback than to both neighbours' playbacks, whereas no differences among treatments were found in canebrake wrens. Given that both species exhibited similar levels of aggression during neighbour playbacks, regardless of whether the correct duet code was used, our findings suggest duet codes do not facilitate neighbour recognition. We conclude that the function of duet codes in these species might be more closely related to intra-pair communication. Finally, we suggest that the level of dear enemy effect a species exhibits depends on ecological factors that influence the perceived level of threat of territory intruders.</span></span></span></span></span></span></span></span></span></span></p>
Duet codes do not enhance neighbour recognition in two closely related species of neotropical wrens
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Flexible Isochrony in titi monkeys duet - DATA and CODE
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