TY - JOUR
T1 - Large-scale patterns of signal evolution
T2 - An interspecific study of Liolaemus lizard headbob displays
AU - Martins, Emília P.
AU - Labra, Antonieta
AU - Halloy, Monique
AU - Tolman Thompson, Julie
N1 - Funding Information:
We thank Charles Carpenter and Laurie Vitt for giving us access to film of L. quilmes (darwinii), and to Joana Feit, Mahlon Kerr-Valentic and Johnell Mituniewicz for help with digitizing and conducting frame-by-frame analyses of videotapes. Miguel Christie and Nora Ibargüengoytı́a were helpful in locating field sites. Luciano Avila, Felix Cruz and Fernando Lobo were helpful in locating field sites, and capturing and identifying different species. We thank the CRILAR Institute of Anillaco, La Rioja, for logistical support. Marcela Castillo and Cecilia Robles helped with data collection in the field. Jim Schulte, Bobby Espinoza and Fernando Lobo were generous enough to provide us with early versions of their phylogenies. Permits were obtained from all the provinces where lizards were filmed. This research was supported by funds from the U.S. National Science Foundation (Nos DEB-9870831 and DEB-9720641 to E.P.M., and a graduate research fellowship on a research training grant in ‘Genetic Mechanisms of Evolution’ to J.T.T.), from CONICET, Argentina (International Cooperation Agreement No. 4339/97 to M.H. and CONICET-PIP No. 4966/97 to Instituto de Herpetologı́a) and from FONDECYT 3990041, Chile to A.L.
PY - 2004/9
Y1 - 2004/9
N2 - Although many factors have been shown to influence the evolution of species recognition signals in a wide variety of taxa, it is difficult to draw general conclusions because of fundamental differences in the morphologies and ecologies of the animals considered. In this study, two morphologically and ecologically similar lizard genera (Sceloporus and Liolaemus) are used to provide replicate examples of the evolution of a complex visual display. New data on the headbob displays of 16 Liolaemus species are presented. As in other taxa, phylogenetic analyses show that evolutionary changes in display structure have been rapid, leaving little, if any, phylogenetic information in the display structure. Evolutionary changes in display structure also do not appear to be closely associated with any major habitat characteristics. Despite this rapid evolution, Liolaemus lizards produce headbob displays that are remarkably simple in structure in comparison to those produced by Sceloporus, perhaps compensating for lower complexity by frequent use of other visual displays such as forelimb and tail waves.
AB - Although many factors have been shown to influence the evolution of species recognition signals in a wide variety of taxa, it is difficult to draw general conclusions because of fundamental differences in the morphologies and ecologies of the animals considered. In this study, two morphologically and ecologically similar lizard genera (Sceloporus and Liolaemus) are used to provide replicate examples of the evolution of a complex visual display. New data on the headbob displays of 16 Liolaemus species are presented. As in other taxa, phylogenetic analyses show that evolutionary changes in display structure have been rapid, leaving little, if any, phylogenetic information in the display structure. Evolutionary changes in display structure also do not appear to be closely associated with any major habitat characteristics. Despite this rapid evolution, Liolaemus lizards produce headbob displays that are remarkably simple in structure in comparison to those produced by Sceloporus, perhaps compensating for lower complexity by frequent use of other visual displays such as forelimb and tail waves.
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U2 - 10.1016/j.anbehav.2003.08.026
DO - 10.1016/j.anbehav.2003.08.026
M3 - Article
AN - SCOPUS:7944231780
SN - 0003-3472
VL - 68
SP - 453
EP - 463
JO - Animal Behaviour
JF - Animal Behaviour
IS - 3
ER -