Huey - p. 3 
The Huey and Webster study of thermoregulation in Anolis marmoratus, 
the only anole on Guadeloupe, specifically intended comparison of their 
results with Ruibal and Philobosian's data on Anolis oculatus, the solitary 
anole of Dominica, On both islands anoles are active over broad ranges of 
body and ambient temperatures. MBTS of marmoratus varied from 22.70 C 
(deep forest subsample) to 30.4° C (road edge subsample) at one locality, 
and from 22.7% to 32,6% over the total localities sampled, Body tempera- 
tures are strongly correlated with ambient temperatures, both within and 
between habitats, suggesting that marmoratus is passive to most ambient 
temperatures. Basking was observed only at high elevations. 
As Rand found on Dominica (see Rand below), there are social aspects 
to thermoregulation. At one locality Huey and Webster recorded sex, 
snout-vent length, body temperature and air temperature for anoles in 
bananas, palms and mangos (habitats ranked from hottest to coldest). Large 
adult males and large adult females inhabit palms (intermediate tempera- 
tures), small adult males and large to small adult females inhabit the cool 
mangos and only juveniles inhabit the hot bananas, A few bananas that were 
shaded by mangos had larger males and females than the unshaded bananas, 
suggesting that thermal environment, not food, is the key factor for these 
lizards in what appears to be intraspecific habitat selection enforced by 
social dominance. 
Sex ratios vary with habitat as well: palms (37.6% males), mangos 
(52.3% males), open bananas (79.4% males), shaded bananas (33.3% males). 
These data suggest that males living in palms and shaded bananas have both 
an optimal thermal environment and the optimal sex ratios for maximizing 
fitness, 
