342 
Index 
Anterior DVR (cont.) 
boundaries of, 23 
efferents from, 123 
in Heloderma, 21 
in Iguana iguMna, 17, 19, 20 
in LanthanotiL8, 21 
projections to, 23-24 
in snakes, 121-132 
in Sphenodon, 427 
subdivisions of, 25 
in type II lizards, 121 
in Varanus bengalensis, 22 
Archosauria, evolution of, 3, 7 
Ascalabota, 55, 56, 183, 184 
Auditory system, 68, 70, 71 
Autarchoglossa, 55, 56, 184, 185 
Axonal degeneration studies 
in anamniotic vertebrates, 68 
in Gekko, 71 
in snakes, 123, 127, 129, 130 
in Tupinambis nigropunctatus, 80, 87, 88, 109-112, 
113, 114 
in Varanus bengalensis, 92-93 
Bachia, thalamic nuclei in, 40 
Banded gecko. See Coleonyx variegatus 
Basal ganglia, homologs of, 65, 67, 69 
Behavior (see also Learning behavior; specific taxa) 
acoustic, 287-299 
aggressive (see also Behavior, agonistic and 
displays) 
of Agama aga/ma, 221 
as an agonistic behavior, 253, 254 
of blue spiny lizards, 219 
displays, 270, 284 
environmental effects on, 217 
of juveniles, 227, 229, 232-234 
as predictor of dominance, 238 
thermoregulatory body profile changes during, 
220 
agonistic 
absence of, in shelters, 216 
as ritualistic behavior, 253-262 
ultraviolet light-induced, 188 
alertness, 208, 216 
allogrooming, 221 
arousal, 184-186, 218, 219, 279 
basking 
alertness during, 185, 213 
by blue spiny lizards, 213, 214, 216 
covert, 215 
heart function during, 190 
by sit-and-wait predators, 184, 194 
temperatures for, 175, 186, 212 
as thermoregulatory behavior, 212-213 
time spent in, 176, 216 
of castrated males, 155, 159 
color discrimination, 174 
communication, 4, 8, 203, 204 
constraints on, 209-219 
microclimate, 209-211 
Behavior (cont.) 
shelter, 215-217 
social, 217-219 
thermal effects on, 211-212 
copulation 
agamid position for, 263 
bite holding, 254 
by Hemidactylus frenatus, 298 
iguanid position for, 263 
lacertid position for, 264 
preliminary behavior, 262 
teiid position for, 264 
courtship and mating 
of Agamidae, 262-266 
descriptions of, 254 
of Hemidactylus frenatus, 298 
of Iguanidae, 262-266 
rejection by females, 264 
as ritualistic behavior, 253 
deceptive, 7 
demographic analysis of, 227-241 
dewlapping 
of Anolis carolinensis, 155-156 
color change effects on, 161-162 
coordinated with head bobbing 274, 275 
in courtship display, 160 
display action pattern of, 276 
neural control of, 135 
displays (see also Behavior, communication, 
dewlapping, head bobbing, head nodding, 
pushups ; Display action patterns) 
acoustic, 294, 296, 298 
aggressive, 8, 270, 284 
agonistic, 275, 276 
of Anolis, 8, 9, 269-284 
appeasement, 312, 314, 315 
assertive, 218, 219, 272, 273 
challenge, 8, 9 218, 219, 272-273 
crest, 155, 156 
defensive, of Iguana iguarva, 135 
energy of, 246, 248, 250, 332 
evolution of, 219-220, 281, 283 
eyespot, 155, 156 
fanbob, 219 
frequency of, 217 
habitat effects on, 333, 334 
heart rates during, 266 
of Iguana iguana, 135 
modifiers, 272 
neural control of, 8-9, 135 
nocturnal, 294, 296, 298 
signature, 227, 238-241, 273-284 
of squirrel monkeys, 7 
stereotypy, 269, 275, 276, 277, 282 
types, 272, 84 
variability of, 269, 273-275, 277, 278, 279, 282 
evolution of, 204, 206, 227, 228 
exploration, spontaneous, 196-197 
and learning, 178-179 
feeding, 21, 213-215, 216, 221 
