Impact of increased character sampling on the phylogeny of Cetartiodactyla (Mammalia): combined analysis including fossils

O’Leary, Maureen A.; Gatesy, John

doi:10.1111/j.1096-0031.2007.00187.x

Cited by 106 publications

(113 citation statements)

References 81 publications

Supporting

Mentioning

104

Contrasting

Order By: Relevance

“…An ML phylogram based on exon 2 sequences from MMP20 ( figure 3) is broadly congruent with cetartiodactyl trees based on large supermatrices [38,48,49] even though the exon 2 alignment is only 248 bp. Only eight clades were supported above the 70 per cent bootstrap level ( figure 3), but in every case these clades were concordant with the analyses based on supermatrices.…”

Section: Resultsmentioning

confidence: 82%

Pseudogenization of the tooth gene enamelysin (MMP20) in the common ancestor of extant baleen whales

et al. 2010

Self Cite

View full text Add to dashboard Cite

Whales in the suborder Mysticeti are filter feeders that use baleen to sift zooplankton and small fish from ocean waters. Adult mysticetes lack teeth, although tooth buds are present in foetal stages. Cladistic analyses suggest that functional teeth were lost in the common ancestor of crown-group Mysticeti. DNA sequences for the tooth-specific genes, ameloblastin (AMBN), enamelin (ENAM) and amelogenin (AMEL), have frameshift mutations and/or stop codons in this taxon, but none of these molecular cavities are shared by all extant mysticetes. Here, we provide the first evidence for pseudogenization of a tooth gene, enamelysin (MMP20), in the common ancestor of living baleen whales. Specifically, pseudogenization resulted from the insertion of a CHR-2 SINE retroposon in exon 2 of MMP20. Genomic and palaeontological data now provide congruent support for the loss of enamel-capped teeth on the common ancestral branch of crown-group mysticetes. The new data for MMP20 also document a polymorphic stop codon in exon 2 of the pygmy sperm whale (Kogia breviceps), which has enamel-less teeth. These results, in conjunction with the evidence for pseudogenization of MMP20 in Hoffmann's two-toed sloth (Choloepus hoffmanni), another enamel-less species, support the hypothesis that the only unique, non-overlapping function of the MMP20 gene is in enamel formation.

show abstract

Section: Resultsmentioning

confidence: 82%

Pseudogenization of the tooth gene enamelysin (MMP20) in the common ancestor of extant baleen whales

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…Mallegni, 2007;Cap et al, 2008;Christiansen, 2008;Dohrmann et al, 2008;O'Leary and Gatesy, 2008;Smith and Grine, 2008;Wills et al, 2008) and has become used in a number of other disciplines in which phylogenetic relationships are important, including anthropology (e.g. , 2008Collard et al, 2006;Coward et al, 2007;Jordan & Shennan, 2003;Lycett, 2007Lycett, , 2009Lycett et al, 2007;O'Brien et al, 2001;O'Brien & Lyman, 2003;Robson-Brown, 1996;Shennan & Collard, 2005;Skelton, 2007;Tehrani & Collard, 2002), historical linguistics (e.g.…”

Section: Figure 2 and Table 2 About Herementioning

confidence: 99%

On the relationship between interindividual cultural transmission and population-level cultural diversity: a case study of weaving in Iranian tribal populations

Tehrani

Collard

2009

Evolution and Human Behavior

View full text Add to dashboard Cite

This is the author's version of a work that was accepted for publication in Evolution and Human Behavior. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reected in this document. Changes may have been made to this work since it was submitted for publication. A denitive version was subsequently published in Jamshid J. Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. It is often assumed that parent-to-child cultural transmission leads to similarities and differences among groups evolving through descent with modification ("phylogenesis"). Similarly, cultural transmission between peers, and between adults and children who are not their offspring, is widely believed to result in groups exchanging cultural traits ("ethnogenesis"). However, neither of these assumptions has been examined empirically. Here we test them using ethnographic data on craft learning in Iranian tribal populations and the cladistic method of phylogenetic analysis. We find that parent-to-child transmission dominates learning during childhood, but the other two forms of inter-individual transmission become more important in later periods. The latter do not, however, appear to have resulted in extensive exchange of cultural traits among tribes. Instead we find that most of the variation among the tribes' craft assemblages can be explained by descent with modification. This can be accounted for by the fact that weavers usually only share their knowledge with members of their own tribe and are prevented from interacting with women from other groups by social norms. These findings demonstrate that the relationship between processes of cultural evolution at the level of the individual and processes of cultural evolution at the level of the group is more complex than is usually acknowledged, and highlight the need for more integrated studies of the processes operating at both scales.3

show abstract

“…The last 15 years have been characterized by debate about differences in molecule-and morphology-based signals pertaining to the phylogenetic position of cetaceans among mammals (see reviews in Gatesy and O'Leary, 2001;Geisler and Uhen, 2003;O'Leary et al, 2004;O'Leary and Gatesy, 2008). It has become clear from these studies that the closest known relative of Cetacea is extinct, underscoring the important role the fossil record plays in reconstructing the evolution of the cetacean ear region.…”

Section: Introductionmentioning

confidence: 99%

An Anatomical and Phylogenetic Study of the Osteology of the Petrosal of Extant and Extinct Artiodactylans (Mammalia) and Relatives

O’Leary¹

2010

Bulletin of the American Museum of Natural History

Self Cite

106

View full text Add to dashboard Cite

Impact of increased character sampling on the phylogeny of Cetartiodactyla (Mammalia): combined analysis including fossils

Cited by 106 publications

References 81 publications

Pseudogenization of the tooth gene enamelysin (MMP20) in the common ancestor of extant baleen whales

Pseudogenization of the tooth gene enamelysin (MMP20) in the common ancestor of extant baleen whales

On the relationship between interindividual cultural transmission and population-level cultural diversity: a case study of weaving in Iranian tribal populations

An Anatomical and Phylogenetic Study of the Osteology of the Petrosal of Extant and Extinct Artiodactylans (Mammalia) and Relatives

Contact Info

Product

Resources

About