02808nas a2200265   4500008004100000022001300041245012500054210006900179260001600248300001100264490000800275520179900283653002202082653001802104653001302122653002202135653002402157653001502181100002402196700002002220700002302240700002102263700002502284856023302309       2018                        eng d  a0003347200aSubspecies status and methods explain strength of response to local versus foreign song by oscine birds in meta-analysis0 aSubspecies status and methods explain strength of response to lo  cJan-08-2018  a1 - 170 v1423 a<p>To understand the implications of geographical variation in vocal culture in songbirds, researchers have often compared territorial responses to playback of local songs versus responses to playback of songs from &lsquo;foreign&rsquo; conspecifics. This body of work has the potential to help us move towards a general understanding of factors driving divergence in signal recognition. We conducted a systematic review and meta-analysis of 57 playback studies to explain variation in strength of response to local versus foreign songs. Studies with incomplete reporting of results had elevated effects due to selective reporting. Studies that used small numbers of stimuli as exemplars (pseudoreplication) had more variable effects than studies without severe pseudoreplication. Whether or not we controlled for pseudoreplication, we found greater response to playback of local song than to foreign song. In investigating potential biological drivers of the variation in strength of experimental effects, we found that the difference in territorial response to local versus foreign song was stronger if the foreign song was recorded from another subspecies than if the foreign song was recorded from the same subspecies as the focal individuals. Indexes of risk of accidental response to heterospecific song did not coherently explain response to foreign conspecific songs, nor did factors expected to influence individual experience with foreign conspecific songs. Thus, although oscine songbirds clearly react more aggressively to local song than to foreign song and variation in the strength of this effect is influenced by methodological choices and subspecies status, considerable variation in the strength of response to local versus foreign song playback remains to be explained.</p>
10adeceptive mimicry10ameta-analysis10aplayback10apseudoreplication10aselective reporting10asignalling1 aParker, Timothy, H.1 aGreig, Emma, I.1 aNakagawa, Shinichi1 aParra, Marcelina1 aDalisio, Anthony, C.  uhttps://linkinghub.elsevier.com/retrieve/pii/S000334721830174Xhttps://api.elsevier.com/content/article/PII:S000334721830174X?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S000334721830174X?httpAccept=text/plain