TY - JOUR
T1 - Adaptive radiation versus intraspecific differentiation
T2 - Morphological variation in Caribbean Anolis lizards
AU - Knox, A. K.
AU - Losos, J. B.
AU - Schneider, C. J.
PY - 2001
Y1 - 2001
N2 - Lizards in the genus Anolis have experienced adaptive radiation in the Greater Antilles, producing a suite of species morphologically adapted to use different parts of the environment. In the Lesser Antilles, adaptive radiation has not occurred, but on some islands, interpopulational variation is high and represents adaptation to different habitats. We compared the extent of morphological differentiation among Greater Antillean habitat specialists with that exhibited among populations of two species. Anolis marmoratus and A. oculatus, from the Lesser Antillean islands of Guadeloupe and Dominica. Although extensive, intraspecific divergence in the Lesser Antilles is substantially less in magnitude than the differences among habitat specialists in the Greater Antilles. All populations of A. marmoratus are most similar to Greater Antillean trunk-crown habitat specialists, but populations of A. oculatus differ in their affinities: some are similar to trunk-crown anoles, but others are more similar to trunk-ground habitat specialists.
AB - Lizards in the genus Anolis have experienced adaptive radiation in the Greater Antilles, producing a suite of species morphologically adapted to use different parts of the environment. In the Lesser Antilles, adaptive radiation has not occurred, but on some islands, interpopulational variation is high and represents adaptation to different habitats. We compared the extent of morphological differentiation among Greater Antillean habitat specialists with that exhibited among populations of two species. Anolis marmoratus and A. oculatus, from the Lesser Antillean islands of Guadeloupe and Dominica. Although extensive, intraspecific divergence in the Lesser Antilles is substantially less in magnitude than the differences among habitat specialists in the Greater Antilles. All populations of A. marmoratus are most similar to Greater Antillean trunk-crown habitat specialists, but populations of A. oculatus differ in their affinities: some are similar to trunk-crown anoles, but others are more similar to trunk-ground habitat specialists.
KW - Adaptive radiation
KW - Anolis
KW - Caribbean
KW - Lesser Antilles
KW - Lizard
UR - http://www.scopus.com/inward/record.url?scp=0035670338&partnerID=8YFLogxK
U2 - 10.1046/j.1420-9101.2001.00358.x
DO - 10.1046/j.1420-9101.2001.00358.x
M3 - Article
AN - SCOPUS:0035670338
SN - 1010-061X
VL - 14
SP - 904
EP - 909
JO - Journal of Evolutionary Biology
JF - Journal of Evolutionary Biology
IS - 6
ER -