Phylogenetic relationships among pocket gophers were examined based on the complete sequence for the mitochondrial cytochrome b gene (1140 base pairs). The tribe Geomyini ( Geomys, Orthogeomys, Cratogeomys, and Pappogeomys ) was well differentiated from the tribe Thomomyini ( Thomomys ), using the heteromyid genera Dipodomys and Perognathus as the outgroup. Within the genus Thomomys, the species in the subgenus Thomomys ( T. talpoides, T. monticola, and T. mazama ) differed from those in the subgenus Megascapheus ( T. bottae, T. townsendii, and T. umbrinus ) by an average of 19.3% uncorrected sequence divergence. Extensive sampling within one species, T. bottae, revealed strongly differentiated geographic units, with a maximum difference among localities of 15.7%. The geographic units within T. bottae coincided with geographic regions based on allozyme data in some areas, but not at all boundaries. The geographic units within currently recognized species in the bottae group (subgenus Megascapheus ) were not grouped together with a high level of confidence. The pattern suggests a rapid radiation of the bottae group, followed by geographic subdivision.
Molecular Phylogenetics and Evolution – Elsevier
Published: Feb 1, 1998
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera