Abstract
Until a few hundred years ago, New Zealand hosted several species of flightless ratite birds, collectively known as the moa. We have used mitochondrial sequence data for Dinornis, the largest of the moa, and new coalescent approaches to estimate its population size prior to human arrival ca. 1000-6000 years BP. We show that, as little as 1000 years ago, Dinornis numbered between 300,000 and 1.4 million and that the standing population of all moa species was ca. 3-12 million. This estimate is an order of magnitude larger than the accepted population estimate (ca. 159,000) for all moa species at the arrival of humans and suggests that moa numbers had already declined prior to human settlement.
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Selected References
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- Beerli P., Felsenstein J. Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach. Proc Natl Acad Sci U S A. 2001 Apr 3;98(8):4563–4568. doi: 10.1073/pnas.081068098. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Beerli P., Felsenstein J. Maximum-likelihood estimation of migration rates and effective population numbers in two populations using a coalescent approach. Genetics. 1999 Jun;152(2):763–773. doi: 10.1093/genetics/152.2.763. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bunce Michael, Worthy Trevor H., Ford Tom, Hoppitt Will, Willerslev Eske, Drummond Alexei, Cooper Alan. Extreme reversed sexual size dimorphism in the extinct New Zealand moa Dinornis. Nature. 2003 Sep 11;425(6954):172–175. doi: 10.1038/nature01871. [DOI] [PubMed] [Google Scholar]
- Holdaway R. N., Jacomb C. Rapid extinction of the moas (Aves: Dinornithiformes): model, test, and implications. Science. 2000 Mar 24;287(5461):2250–2254. doi: 10.1126/science.287.5461.2250. [DOI] [PubMed] [Google Scholar]
- Huynen L., Millar C. D., Scofield R. P., Lambert D. M. Nuclear DNA sequences detect species limits in ancient moa. Nature. 2003 Sep 11;425(6954):175–178. doi: 10.1038/nature01838. [DOI] [PubMed] [Google Scholar]
- Kumar S., Tamura K., Jakobsen I. B., Nei M. MEGA2: molecular evolutionary genetics analysis software. Bioinformatics. 2001 Dec;17(12):1244–1245. doi: 10.1093/bioinformatics/17.12.1244. [DOI] [PubMed] [Google Scholar]
- Lambert D. M., Ritchie P. A., Millar C. D., Holland B., Drummond A. J., Baroni C. Rates of evolution in ancient DNA from Adélie penguins. Science. 2002 Mar 22;295(5563):2270–2273. doi: 10.1126/science.1068105. [DOI] [PubMed] [Google Scholar]
- Pusch Carsten M., Bachmann Lutz. Spiking of contemporary human template DNA with ancient DNA extracts induces mutations under PCR and generates nonauthentic mitochondrial sequences. Mol Biol Evol. 2004 Mar 10;21(5):957–964. doi: 10.1093/molbev/msh107. [DOI] [PubMed] [Google Scholar]
- Quinn T. W. The genetic legacy of Mother Goose--phylogeographic patterns of lesser snow goose Chen caerulescens caerulescens maternal lineages. Mol Ecol. 1992 Aug;1(2):105–117. doi: 10.1111/j.1365-294x.1992.tb00162.x. [DOI] [PubMed] [Google Scholar]
- Roman Joe, Palumbi Stephen R. Whales before whaling in the North Atlantic. Science. 2003 Jul 25;301(5632):508–510. doi: 10.1126/science.1084524. [DOI] [PubMed] [Google Scholar]
- Tajima F. Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics. 1989 Nov;123(3):585–595. doi: 10.1093/genetics/123.3.585. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wright S. Evolution in Mendelian Populations. Genetics. 1931 Mar;16(2):97–159. doi: 10.1093/genetics/16.2.97. [DOI] [PMC free article] [PubMed] [Google Scholar]