Austrofundulus

Tomas Hrbek, Donald C. Taphorn & Jamie E. Thomerson, 2005, Molecular phylogeny of Austrofundulus Myers (Cyprinodontiformes: Rivulidae), with revision of the genus and the description of four new species., Zootaxa 825, pp. 1-39: 9-11

publication ID

z00825p001

publication LSID

lsid:zoobank.org:pub:A65C9E57-187D-4503-AD3A-E7E4135A77BF

persistent identifier

http://treatment.plazi.org/id/42AA6DFF-BBB9-9684-78C1-7E682565FC25

treatment provided by

Thomas

scientific name

Austrofundulus
status

 

Austrofundulus  ZBK  Phylogeny

We conducted maximum likelihood and maximum parsimony analyses of the data. The results of the two analyses are nearly identical. In maximum likelihood analysis, the Colombian Austrofundulus  ZBK  are sister to all other Austrofundulus  ZBK  (Fig. 2), while in maximum parsimony analysis the Colombian Austrofundulus  ZBK  are sister to all other Austrofundulus  ZBK  and three Rachovia  ZBK  species from the Maracaibo basin ( R. hummelincki  ZBK  , R. pyropunctata  ZBK  and R. brevis  ) (Fig. 3). In both analyses the Guajira Austrofundulus  ZBK  are sister to all other Lago Maracaibo basin Austrofundulus  ZBK  . Austrofundulus transilis  ZBK  is the sister taxon to A. limnaeus  ZBK  from the Rupununi, Guyuana, and in turn this clade formed the sister clade to the Tucacas population of A. limnaeus  ZBK  . These two A. limnaeus  ZBK  and A. transilis  ZBK  populations form the sister clade to the Lago Maracaibo populations of A. limnaeus  ZBK  (Fig. 2). Likelihood of the maximum likelihood topology is -ln L = 13502.97562 with α = 0.465919. Tree length of the maximum parsimony topology is 2422 steps, the consistency index is 0.689 and retention index is 0.792. Monophyly of all populations is strongly supported statistically, as are majority of among population relationships (Figs. 2, 3). Further evidence supporting monophyly and distinctiveness of these populations are unique length variations at positions 430 to 475 of the 12S rRNA (Table 2).

FIGURE 2. Maximum likelihood phylogenetic tree on 2653 aligned mtDNA base pairs. Likelihood of the topology is -ln L = 13502.97562 with α = 0.465919. Numbers above nodes are bootstrap values (Felsenstein, 1985). In general, divergences are well supported. Key to genera: A. = Austrofundulus  ZBK  ; R. = Rachovia  ZBK  .