Karyotypic evolution inAotus
| Autor: | Gary J. Galbreath |
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| Rok vydání: | 1983 |
| Předmět: | |
| Zdroj: | American Journal of Primatology. 4:245-251 |
| ISSN: | 1098-2345 0275-2565 |
| DOI: | 10.1002/ajp.1350040303 |
| Popis: | Great karyotypic diversity exists within the platyrrhine genus Aotus. Primarily by comparing banded karyograms of different forms of Aotus, the pattern of karyotypic evolution can be assessed. Out-group comparisons are used to establish primitive and derived states of particular chromosomes, and a parsimonious cladogram is constructed. Other karyotypic changes are then positioned at appropriate nodes of the cladogram. The resulting phylogenetic hypothesis is entirely self-consistent, is in accord with out-group comparisons, does not invoke hybridization between ancestral forms, and, importantly, indicates a single origin for each rearrangement of euchromatic segments. Moreover, it is consistent with the hypothesis, derived from pelage studies, that the more southerly Aotus taxa constitute a holophyletic group. The reconstructed ancestral karyotype had a diploid number of 54. There has been little loss of euchromatic material during Aotus evolution. |
| Databáze: | OpenAIRE |
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