Comment on "The latitudinal gradient in recent speciation and extinction rates of birds and mammals"

Science

Volumn 319, Issue 5865, 2008, Pages

  Tobias, Joseph A ^a   Bates, John M ^b   Hackett, Shannon J ^b   Seddon, Nathalie ^a  

^a UNIVERSITY OF OXFORD   (United Kingdom)

^b FIELD MUSEUM OF NATURAL HISTORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AGE DISTRIBUTION; ARTIFACT; BIRD; GENETIC VARIABILITY; LATITUDE; MAMMAL; MOLECULAR PHYLOGENY; NOTE; PRIORITY JOURNAL; SAMPLING; SPECIES DIFFERENTIATION; SPECIES EXTINCTION; TAXONOMY; TROPICS;

ANIMALS; BIODIVERSITY; BIRDS; EXTINCTION, BIOLOGICAL; GENETIC SPECIATION; GEOGRAPHY; HAPLOTYPES; MAMMALS; PASSERIFORMES; PHYLOGENY; TROPICAL CLIMATE;

AVES; MAMMALIA;

EID: 39349118041     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1150568     Document Type: Note

References (28)

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4. Complex phylogeographic structure has been reported in several Neotropical "species," including Glyphorhynchus spirurus (14), Lepidothrix coronata (15), and Buarremon torquatus (16). Numerous tropical "species," including many in Weir and Schluter's data set (e.g., Cnemotriccus fuscatus, Grallaria rufula, Xiphorhynchus ocellatus, and Sittasomus griseicapillus), are thought to represent 2 to 10 species-level taxa.
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8. For example, Catharus bicknelli (17), Carduelis hornemanni (18), and Loxia spp. (19). Species status is disputed for these forms and several other temperate zone sisters in Weir and Schluter's data set (1).
9. This is an example of an error unlikely in the temperate sample: On the basis of inaccurate GenBank sequences, Weir and Schluter calculated a divergence time of 8.55 Ma for Poospiza garleppi and P. baeri, two relatively young tropical taxa (divergence <2 Ma) (20). Similarly, a divergence time of 5.47 Ma is given for Daptrius (Ibycter) americanus and D. ater, two nonsisters misplaced in the sample (21). The tropical sample also appears to contain more sister species (e.g., Catharus spp. and Hypopyrrhus/Lamproposar) with poorly supported nodes (22, 23).
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28. DNA sequence data were gathered by J. Hunt and E. Sackett-Hermann in the Pritzker Laboratory for Molecular Systematics and Evolution with support from NSF grant DEB 9974104 to S.J.H. and J.M.B. We thank T. Price and J. Weir for constructive comments