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Identifier

000419893

Title

A phylogenomic perspective on sparidae (teleostei : spariformes) positioning within the tree of teleosts : challenges and new insights

Alternative Title

Φυλογονιδιωματική προσέγγιση στην θέση των sparidae (teleostei : spariformes) μέσα στο δέντρο των τελεοστέων

Author

Νατσίδης, Πασχάλης

Thesis advisor

Μανουσάκη, Τερέζα

Reviewer

Τσιγγενόπουλος, Κώστας
Παυλίδης, Παύλος
Νικολάου, Χριστόφορος

Abstract

Sparidae (Teleostei: Spariformes) are a family of fish constituted by approximately 150 species with high popularity and commercial value, such as porgies and seabreams. Although the phylogeny of this family has been under investigation multiple times, many controversies are present within the existing literature. Most studies have used a single or few genes to decipher the phylogenetic relationships of sparids. Here, I use a phylogenomic approach to resolve the position of the family, using five recently available Sparidae gene sets and 26 well-curated available fish proteomes. Through a vigorous phylogenomic analysis I suggest Tetraodontiformes (puffer fish, sunfish) as the most closely related group to Sparidae. This contrasts to the findings of a previous phylogenomic analysis involving the gilthead seabream genome that proposed the yellow croaker and the european seabass as sister taxa of Sparidae. By analytically comparing the methodologies applied in both cases, I show that this discordance is not caused by the use of different orthology algorithms and pipelines; on the contrary, I prove that it is caused by the increased taxon sampling of the present study, outlining the great importance of this aspect in phylogenomic analyses in general.

Language

English

Subject

Fish phylogeny

Phylogenetics methods

molecular evolution

Μοριακή εξέλιξη

Φυλογένεση υχθύων

Φυλογενετικές μέθοδοι

Issue date

2018-12-05

Collection