| Title |
The First Record of a Trans-Oceanic Sister-Group Relationship between Obligate Vertebrate Troglobites
|
|---|---|
| Published in |
PLOS ONE, August 2012
|
| DOI | 10.1371/journal.pone.0044083 |
| Pubmed ID | |
| Authors |
Prosanta Chakrabarty, Matthew P. Davis, John S. Sparks |
| Abstract |
We show using the most complete phylogeny of one of the most species-rich orders of vertebrates (Gobiiformes), and calibrations from the rich fossil record of teleost fishes, that the genus Typhleotris, endemic to subterranean karst habitats in southwestern Madagascar, is the sister group to Milyeringa, endemic to similar subterranean systems in northwestern Australia. Both groups are eyeless, and our phylogenetic and biogeographic results show that these obligate cave fishes now found on opposite ends of the Indian Ocean (separated by nearly 7,000 km) are each others closest relatives and owe their origins to the break up of the southern supercontinent, Gondwana, at the end of the Cretaceous period. Trans-oceanic sister-group relationships are otherwise unknown between blind, cave-adapted vertebrates and our results provide an extraordinary case of Gondwanan vicariance. |
X Demographics
The data shown below were collected from the profiles of 29 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 6 | 21% |
| Australia | 4 | 14% |
| Canada | 2 | 7% |
| Singapore | 1 | 3% |
| France | 1 | 3% |
| Czechia | 1 | 3% |
| United Kingdom | 1 | 3% |
| Unknown | 13 | 45% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 22 | 76% |
| Scientists | 6 | 21% |
| Practitioners (doctors, other healthcare professionals) | 1 | 3% |
Mendeley readers
The data shown below were compiled from readership statistics for 104 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 2% |
| Chile | 1 | <1% |
| Italy | 1 | <1% |
| Germany | 1 | <1% |
| Sweden | 1 | <1% |
| Brazil | 1 | <1% |
| Greece | 1 | <1% |
| United Kingdom | 1 | <1% |
| Unknown | 95 | 91% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 24 | 23% |
| Student > Ph. D. Student | 17 | 16% |
| Professor | 15 | 14% |
| Student > Bachelor | 12 | 12% |
| Student > Master | 11 | 11% |
| Other | 20 | 19% |
| Unknown | 5 | 5% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 79 | 76% |
| Environmental Science | 8 | 8% |
| Biochemistry, Genetics and Molecular Biology | 6 | 6% |
| Earth and Planetary Sciences | 3 | 3% |
| Physics and Astronomy | 1 | <1% |
| Other | 1 | <1% |
| Unknown | 6 | 6% |