TY - JOUR
T1 - Individual and sex differences in the use of the push-up display by the sagebrush lizard, Sceloporus graciosus
AU - Martins, Emilia P.
N1 - Funding Information:
Most of all, I thank Cynthia A. Kapke for invaluable help in the field. I am also indebted to Stephen C. Adolph for a great deal of herpetological advice, and for sharing his field site. Mark Fischer and A1 Muth were very helpful in showing me how to use beads to mark very small lizards. Erik V. Nordheim provided patience and much statistical advice, while Jeffrey R. Baylis, Theodore Garland, Jr, Jack P. Hailman, Jeanne S. Krinsley, Scan O'Donnell and Charles T. Snowdon offered numerous helpful comments on the manuscript. Lee C. Drickamer and two anonymous referees also provided useful suggestions. This study was supported by an NSF graduate fellowship and a Sigma Xi Grant-in-Aid-of-Research.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1991/3
Y1 - 1991/3
N2 - Repeatable differences among individuals or among groups of individuals within a population may be used to describe the existence of alternative 'strategies' or social roles in behaviour and constitute the raw material on which phenotypic selection can act. Communicative displays that show consistent differences among individuals or between the sexes may also be used as mechanisms for individual or sexual recognition. In this study, individual and sex differences in several aspects of the push-up display were examined in a field study of Sceloporus graciosus. Previous studies have looked primarily at specifics of the head-bob pattern of adult male lizards in captivity. This study investigated several other measures of the push-up display, including display frequency, display perch height and number of legs flexed in displays as well as the head-bob pattern. It also examined the behaviour of both adult male and female lizards in the field. Repeatable individual differences occurred in all of the variables examined. These differences may be indicative of differences in home-range quality, motivational state, or may be used for individual recognition. Differences between the sexes occurred in display frequency, number of head-bobs per display and display duration, but not in display perch height, nor in number of legs flexed per display. Sex differences in the head-bob pattern suggest that the push-up displays of males and females may be qualitatively different, and possibly used for different purposes.
AB - Repeatable differences among individuals or among groups of individuals within a population may be used to describe the existence of alternative 'strategies' or social roles in behaviour and constitute the raw material on which phenotypic selection can act. Communicative displays that show consistent differences among individuals or between the sexes may also be used as mechanisms for individual or sexual recognition. In this study, individual and sex differences in several aspects of the push-up display were examined in a field study of Sceloporus graciosus. Previous studies have looked primarily at specifics of the head-bob pattern of adult male lizards in captivity. This study investigated several other measures of the push-up display, including display frequency, display perch height and number of legs flexed in displays as well as the head-bob pattern. It also examined the behaviour of both adult male and female lizards in the field. Repeatable individual differences occurred in all of the variables examined. These differences may be indicative of differences in home-range quality, motivational state, or may be used for individual recognition. Differences between the sexes occurred in display frequency, number of head-bobs per display and display duration, but not in display perch height, nor in number of legs flexed per display. Sex differences in the head-bob pattern suggest that the push-up displays of males and females may be qualitatively different, and possibly used for different purposes.
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U2 - 10.1016/S0003-3472(05)80841-3
DO - 10.1016/S0003-3472(05)80841-3
M3 - Article
AN - SCOPUS:0026012670
SN - 0003-3472
VL - 41
SP - 403
EP - 416
JO - Animal Behaviour
JF - Animal Behaviour
IS - 3
ER -