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The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean.
Mol Phylogenet Evol 2004; 30(2):273-86MP

Abstract

Sequence data derived from four markers (the nuclear RP1 and Aldolase and the mitochondrial 16S rRNA and cytochrome b genes) were used to determine the phylogenetic relationships among 32 species belonging to the genus Hippocampus. There were marked differences in the rate of evolution among these gene fragments, with Aldolase evolving the slowest and the mtDNA cytochrome b gene the fastest. The RP1 gene recovered the highest number of nodes supported by >70% bootstrap values from parsimony analysis and >95% posterior probabilities from Bayesian inference. The combined analysis based on 2317 nucleotides resulted in the most robust phylogeny. A distinct phylogenetic split was identified between the pygmy seahorse, Hippocampus bargibanti, and a clade including all other species. Three species from the western Pacific Ocean included in our study, namely H. bargibanti, H. breviceps, and H. abdominalis occupy basal positions in the phylogeny. This and the high species richness in the region suggests that the genus evolved somewhere in the West Pacific. There is also fairly strong molecular support for the remaining species being subdivided into three main evolutionary lineages: two West Pacific clades and a clade of species present in both the Indo-Pacific and the Atlantic Ocean. The phylogeny obtained herein suggests at least two independent colonization events of the Atlantic Ocean, once before the closure of the Tethyan seaway, and once afterwards.

Authors+Show Affiliations

Zoology Department, University of Stellenbosch, Private Bag X1, 7602, Matieland, South Africa. ptl@sun.ac.zaNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14715220

Citation

Teske, Peter R., et al. "The Evolutionary History of Seahorses (Syngnathidae: Hippocampus): Molecular Data Suggest a West Pacific Origin and Two Invasions of the Atlantic Ocean." Molecular Phylogenetics and Evolution, vol. 30, no. 2, 2004, pp. 273-86.
Teske PR, Cherry MI, Matthee CA. The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean. Mol Phylogenet Evol. 2004;30(2):273-86.
Teske, P. R., Cherry, M. I., & Matthee, C. A. (2004). The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean. Molecular Phylogenetics and Evolution, 30(2), pp. 273-86.
Teske PR, Cherry MI, Matthee CA. The Evolutionary History of Seahorses (Syngnathidae: Hippocampus): Molecular Data Suggest a West Pacific Origin and Two Invasions of the Atlantic Ocean. Mol Phylogenet Evol. 2004;30(2):273-86. PubMed PMID: 14715220.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean. AU - Teske,Peter R, AU - Cherry,Michael I, AU - Matthee,Conrad A, PY - 2004/1/13/pubmed PY - 2004/9/10/medline PY - 2004/1/13/entrez SP - 273 EP - 86 JF - Molecular phylogenetics and evolution JO - Mol. Phylogenet. Evol. VL - 30 IS - 2 N2 - Sequence data derived from four markers (the nuclear RP1 and Aldolase and the mitochondrial 16S rRNA and cytochrome b genes) were used to determine the phylogenetic relationships among 32 species belonging to the genus Hippocampus. There were marked differences in the rate of evolution among these gene fragments, with Aldolase evolving the slowest and the mtDNA cytochrome b gene the fastest. The RP1 gene recovered the highest number of nodes supported by >70% bootstrap values from parsimony analysis and >95% posterior probabilities from Bayesian inference. The combined analysis based on 2317 nucleotides resulted in the most robust phylogeny. A distinct phylogenetic split was identified between the pygmy seahorse, Hippocampus bargibanti, and a clade including all other species. Three species from the western Pacific Ocean included in our study, namely H. bargibanti, H. breviceps, and H. abdominalis occupy basal positions in the phylogeny. This and the high species richness in the region suggests that the genus evolved somewhere in the West Pacific. There is also fairly strong molecular support for the remaining species being subdivided into three main evolutionary lineages: two West Pacific clades and a clade of species present in both the Indo-Pacific and the Atlantic Ocean. The phylogeny obtained herein suggests at least two independent colonization events of the Atlantic Ocean, once before the closure of the Tethyan seaway, and once afterwards. SN - 1055-7903 UR - https://www.unboundmedicine.com/medline/citation/14715220/The_evolutionary_history_of_seahorses__Syngnathidae:_Hippocampus_:_molecular_data_suggest_a_West_Pacific_origin_and_two_invasions_of_the_Atlantic_Ocean_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1055790303002148 DB - PRIME DP - Unbound Medicine ER -