Shark tales: a molecular species-level phylogeny of sharks (Selachimorpha, Chondrichthyes).


:Sharks are a diverse and ecologically important group, including some of the ocean's largest predatory animals. Sharks are also commercially important, with many species suffering overexploitation and facing extinction. However, despite a long evolutionary history, commercial, and conservation importance, phylogenetic relationships within the sharks are poorly understood. To date, most studies have either focused on smaller clades within sharks, or sampled taxa sparsely across the group. A more detailed species-level phylogeny will offer further insights into shark taxonomy, provide a tool for comparative analyses, as well as facilitating phylogenetic estimates of conservation priorities. We used four mitochondrial and one nuclear gene to investigate the phylogenetic relationships of 229 species (all eight Orders and 31 families) of sharks, more than quadrupling the number of taxon sampled in any prior study. The resulting Bayesian phylogenetic hypothesis agrees with prior studies on the major relationships of the sharks phylogeny; however, on those relationships that have proven more controversial, it differs in several aspects from the most recent molecular studies. The phylogeny supports the division of sharks into two major groups, the Galeomorphii and Squalimorphii, rejecting the hypnosqualean hypothesis that places batoids within sharks. Within the squalimorphs the orders Hexanchiformes, Squatiniformes, Squaliformes, and Pristiophoriformes are broadly monophyletic, with minor exceptions apparently due to missing data. Similarly, within Galeomorphs, the orders Heterodontiformes, Lamniformes, Carcharhiniformes, and Orectolobiformes are broadly monophyletic, with a couple of species 'misplaced'. In contrast, many of the currently recognized shark families are not monophyletic according to our results. Our phylogeny offers some of the first clarification of the relationships among families of the order Squaliformes, a group that has thus far received relatively little phylogenetic attention. Our results suggest that the genus Echinorhinus is not a squaliform, but rather related to the saw sharks, a hypothesis that might be supported by both groups sharing 'spiny' snouts. In sum, our results offer the most detailed species-level phylogeny of sharks to date and a tool for comparative analyses.


Mol Phylogenet Evol


Vélez-Zuazo X,Agnarsson I




Has Abstract


2011-02-01 00:00:00














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    journal_title:Molecular phylogenetics and evolution

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    authors: Haszprunar G

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    journal_title:Molecular phylogenetics and evolution

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    authors: Lou M,Golding GB

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    abstract::Argonaute proteins (AGOs) are mediators of gene silencing via recruitment of small regulatory RNAs to induce translational regression or degradation of targeted molecules. Platyhelminths have been reported to express microRNAs but the diversity of AGOs in the phylum has not been explored. Phylogenetic relationships of...

    journal_title:Molecular phylogenetics and evolution

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    authors: Zheng Y

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  • Scorpion speciation in the Holy Land: Multilocus phylogeography corroborates diagnostic differences in morphology and burrowing behavior among Scorpio subspecies and justifies recognition as phylogenetic, ecological and biological species.

    abstract::Scorpio Linnaeus, 1758 (family Scorpionidae Latreille, 1802) was considered monotypic for over a century, and comprised a single species, Scorpio maurus Linnaeus, 1758, with 19 subspecies, distributed from West Africa, throughout the Maghreb and the Middle East, to Iran. Two parapatric subspecies, Scorpio maurus fuscu...

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    authors: Talal S,Tesler I,Sivan J,Ben-Shlomo R,Muhammad Tahir H,Prendini L,Snir S,Gefen E

    更新日期:2015-10-01 00:00:00

  • Relationships among major lineages of characid fishes (Teleostei: Ostariophysi: Characiformes), based on molecular sequence data.

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    journal_title:Molecular phylogenetics and evolution

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    authors: Javonillo R,Malabarba LR,Weitzman SH,Burns JR

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  • The hemagglutinin mutation E391K of pandemic 2009 influenza revisited.

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    journal_title:Molecular phylogenetics and evolution

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    authors: Zimmer EA,Wen J

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    pub_type: 杂志文章


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    journal_title:Molecular phylogenetics and evolution

    pub_type: 杂志文章


    authors: Civeyrel L,Le Thomas A,Ferguson K,Chase MW

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    pub_type: 杂志文章


    authors: McKelvy AD,Burbrink FT

    更新日期:2017-01-01 00:00:00

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    journal_title:Molecular phylogenetics and evolution

    pub_type: 杂志文章


    authors: Spinks PQ,Thomson RC,McCartney-Melstad E,Shaffer HB

    更新日期:2016-10-01 00:00:00

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    journal_title:Molecular phylogenetics and evolution

    pub_type: 杂志文章


    authors: Saitou N,Kitano T

    更新日期:2013-02-01 00:00:00