Natural Hybridization between Two Sibling Species of Anolis Lizards: Chromosome Cytology

See allHide authors and affiliations

Science  22 Mar 1968:
Vol. 159, Issue 3821, pp. 1358-1360
DOI: 10.1126/science.159.3821.1358


The Lesser Antillean lizards Anolis trinitatis and Anolis aenous were both apparently introduced to Trinidad where they are hybridizing. The parental species have 36 and 34 chromosomes, respectively. Hybrids have 35 chromosomes. Meiosis in hybrids is abnormal. There is an accumulation of cells at metaphase I, and poor homolog pairing, characterized by a low frequency of chiasmata and numerous univalents.

Stay Connected to Science