Title |
The prevalence of genome replacement in unisexual salamanders of the genus Ambystoma(Amphibia, Caudata) revealed by nuclear gene genealogy
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Published in |
BMC Ecology and Evolution, May 2008
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DOI | 10.1186/1471-2148-8-158 |
Pubmed ID | |
Authors |
Ke Bi, James P Bogart, Jinzhong Fu |
Abstract |
Unisexual salamanders of the genus Ambystoma exemplify the most ancient lineage of unisexual vertebrates and demonstrate an extremely flexible reproductive system. Unisexual Ambystoma interact with and incorporate genomes from two to four sexual species (A. laterale, A. jeffersonianum,A. texanum, and A. tigrinum), to generate more than 20 genome compositions or biotypes. Unisexual ploidy levels range from diploid to pentaploid, but all contain at least one A. laterale (L) genome. Replacement of nuclear genomes might be responsible for the evolutionary longevity of unisexual Ambystoma but direct evidence for the prevalence of genome replacement in natural populations is absent. Two major puzzling questions have remained unanswered over the last few decades: 1) is genome replacement a common reproductive method in various unisexual populations and, 2) is there an ancient "L" genome that persists in various unisexual genome compositions. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United States | 4 | 5% |
Canada | 2 | 3% |
Czechia | 1 | 1% |
Colombia | 1 | 1% |
Netherlands | 1 | 1% |
United Kingdom | 1 | 1% |
Unknown | 68 | 87% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 16 | 21% |
Student > Ph. D. Student | 15 | 19% |
Student > Bachelor | 11 | 14% |
Student > Master | 11 | 14% |
Student > Doctoral Student | 6 | 8% |
Other | 12 | 15% |
Unknown | 7 | 9% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 56 | 72% |
Biochemistry, Genetics and Molecular Biology | 6 | 8% |
Environmental Science | 4 | 5% |
Business, Management and Accounting | 1 | 1% |
Veterinary Science and Veterinary Medicine | 1 | 1% |
Other | 4 | 5% |
Unknown | 6 | 8% |