Open AccessInterspecific relationships and biogeography of some Bornean tree shrews (Tupaiidae: Tupaia ), based on DNA hybridization and morphometric comparisons 1
Author(s) -
HAN KWAIHIN,
SHELDON FREDERICK H.,
STUEBING ROBERT B.
Publication year - 2000
Publication title -
biological journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.906
H-Index - 112
eISSN - 1095-8312
pISSN - 0024-4066
DOI - 10.1111/j.1095-8312.2000.tb00197.x
Subject(s) - biology , clade , biogeography , phylogenetic tree , zoology , evolutionary biology , character evolution , interspecific competition , convergent evolution , shrew , ecology , genetics , gene
The interspecific relationships and biogeography of seven southeast Asian tree shrew species in the genus Tupaia were examined by DNA hybridization and multivariate morphometric analysis. Urogale everetti served as the outgroup. DNA hybridization data indicate that T. tana is most closely related to T. tnontana , and they form a clade with T. minor. Morphometric comparisons indicate that T. tana and 77 minor , and 7. montana and T palawanensis , form groups that, together, are most similar to T. glis. T. javanica and U. everetti cluster outside the rest of Tupaia. The DNA hybridization data support a model of Bornean speciation driven by sea‐level changes. They also indicate either (1) that there is a large variation in the rate of tree shrew evolution or (2) that U. everetti may in fact be a member of the ingroup. When considered in light of the phylogenetic results, the morphometric data suggest substantial convergence in body size or correlation in character changes.