Hematological Variations in the Collared Lizard, Crotaphytus collaris (Sauria: Iguanidae)

Copeia ◽  
1985 ◽  
Vol 1985 (3) ◽  
pp. 782
Author(s):  
Royce E. Ballinger ◽  
Tommy G. Hipp
Keyword(s):  
Crotaphytus Collaris ◽  
Collared Lizard

Microscopic Eggshell Characteristics in the Collared Lizard, Crotaphytus collaris (Sauria: Crotaphytidae)

1994 ◽  
Vol 39 (1) ◽  
pp. 45 ◽  
Author(s):  
Stanley E. Trauth ◽  
Chris T. McAllister ◽  
Wei Chen
Keyword(s):  
Crotaphytus Collaris ◽  
Collared Lizard

Juvenile-juvenile social signalling: a case for precocial sexual selection in the collared lizard, Crotaphytus collaris (Squamata: Crotaphytidae)?

2020 ◽  
Vol 130 (2) ◽  
pp. 336-344
Author(s):  
Stanley F Fox ◽  
Felipe De Jesús Rodríguez-Romero ◽  
Andrea Acevedo Crosby
Keyword(s):  
Sexual Selection ◽  
Social Interactions ◽  
Social Relations ◽  
Sexual Maturity ◽  
Field Experiments ◽  
Crotaphytus Collaris ◽  
The Social ◽  
Collared Lizard ◽  
Juvenile Males ◽  
Sexually Mature

Abstract Sexual selection is widespread in animals, but quite naturally studied in adults. Juvenile males in most animals are not differentiated from females and coloration is usually drab. However, there is no reason to suspect that sexual differences cannot develop before puberty, influence social interactions, and then have fitness pay-offs later in life. Juvenile collared lizards (Crotaphytus collaris (Say, 1822)) show marked dichromatism: males develop bright dorsolateral orange bars whereas females do not. These juvenile orange bars (JOB) disappear at sexual maturity, when males develop different colour traits maintained by sexual selection. We conducted field experiments with juvenile males on their developing territories in which we utilized staged intruders of juvenile males (with JOB) and juvenile females (lacking JOB) and also juvenile male intruders whose JOB were manipulated. Residents reacted significantly more aggressively toward males vs. females, and also toward males whose JOB were emphasized with paint than those whose JOB were masked by paint. These JOB are used in signalling among juveniles and we suggest the social relations established then are retained until sexual maturation the next spring (after the JOB are lost) to benefit males that previously displayed strong JOB by increased matings in the spring as sexually mature yearlings as per a phenomenon we call precocial sexual selection.

Reproduction in the Collared Lizard, Crotaphytus collaris, in West Central Texas

Copeia ◽  
1985 ◽  
Vol 1985 (4) ◽  
pp. 976 ◽  
Author(s):  
Royce E. Ballinger ◽  
Tommy G. Hipp
Keyword(s):  
Crotaphytus Collaris ◽  
West Central ◽  
Collared Lizard ◽  
Central Texas

Geographic Variation in Sexual Dichromatism in the Collared Lizard, Crotaphytus collaris (Sauria: Crotaphytidae)

Copeia ◽  
1997 ◽  
Vol 1997 (3) ◽  
pp. 565 ◽  
Author(s):  
J. Kelly McCoy ◽  
H. James Harmon ◽  
T. A. Baird ◽  
Stanley F. Fox
Keyword(s):  
Geographic Variation ◽  
Sexual Dichromatism ◽  
Crotaphytus Collaris ◽  
Collared Lizard

scholarly journals Impact of fire management on the ecology of collared lizard (Crotaphytus collaris) populations living on the Ozark Plateau

2003 ◽  
Vol 6 (3) ◽  
pp. 247-254 ◽  
Author(s):  
Jennifer A. Brisson ◽  
Jared L. Strasburg ◽  
Alan R. Templeton
Keyword(s):  
Fire Management ◽  
Crotaphytus Collaris ◽  
Collared Lizard
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