Characterization of the complete mitochondrial genome and phylogenetic analysis of the common dolphin <i>Delphinus delphis</i> (Cetacea: Delphinidae)

Lee, Kyunglee; Lee, JunMo; Cho, Yuna; Sohn, Hawsun; Choi, Youngjoon; Lim, Sungsu; Kim, Hye Kwon; Yoon, Sun‐Woo; Jeong, Dae Gwin; Kim, Ji Hyung

doi:10.1080/23802359.2018.1473720

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…A more recent study, using 366 bp of the mtDNA D‐loop fragments from common dolphin sampled from the Black Sea, Turkish Straits, and Aegean Sea ( n = 37), and then compared with previous stored GenBank genetic data for 100 Mediterranean and Black Sea samples and 250 East Atlantic Ocean samples, reiterates previous outcomes by indicating the sampling limitations that hinder complete understanding of the genetic population structure of D. delphis in the Mediterranean Sea (Tonay et al, 2016, 2020). In the meantime, the first complete mtDNA genome and resultant phylogeny of D. delphis has clearly distinguished it from the long‐beaked form Delphinus capensis while revealing that these two species are closely related to Stenella coeruleoalba (Lee et al, 2018). These results, and more so the developed molecular tools, may be applied to further investigate the genetic diversity and structure of D. delphis in the Mediterranean in more detail and with the required sampling protocols.…”

Section: Introductionmentioning

confidence: 99%

The conservation of the endangered Mediterranean common dolphin (Delphinus delphis): Current knowledge and research priorities

Vella

Murphy

Giménez

et al. 2021

Aquatic Conservation

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1. Preservation of endangered species is now recognized as a relevant component of regional and global conservation actions achieved through the maintenance of the remaining populations in a favourable conservation status. The Mediterranean common dolphin (Delphinus delphis) is listed as an Endangered subpopulation in the International Union for Conservation of Nature Red List, with declining numbers in some of the areas where it has been studied for numerous years. Prey depletion, fisheries bycatch, pollution, health risks, and climate change are among the recognized threats that the species is facing in the region.2. The existing national, regional, and international legislation pertinent to Mediterranean countries should aid greater science-policy-management integration and support innovative research and monitoring towards effective conservation. The challenges inherent in studying the pelagic D. delphis should not preclude the use of long-term, year-round, multiplatform surveys, side by side with the latest molecular tools, which aid our understanding of its populations' genetic diversity, resistance to diseases, and resilience in a semi-enclosed fast-changing sea.3. Addressing the multiplicity of problems confronting the species requires collaborative effort at all levels to share and merge resources, data, and expertise more efficiently. In this review, we provide an overview of the current knowledge on the Mediterranean common dolphin, the main threats, and knowledge gaps that are priorities for addressing its conservation, while providing clear recommendations for effectively safeguarding the species and its habitat at both local and regional levels.

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Section: Introductionmentioning

confidence: 99%

The conservation of the endangered Mediterranean common dolphin (Delphinus delphis): Current knowledge and research priorities

Vella

Murphy

Giménez

et al. 2021

Aquatic Conservation

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“…The subfamilies of Delphininae and Stenoninae are grouped into a single monophyletic clade (Figure 1). Orcinus orca has grouped with subfamily Lissodelphininae with supporting (Horreo 2019) and contradicting (Lee et al 2018) that shows potential reinvestigations of the taxonomy (Figure 1 and Supplementary Figure 2).…”

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confidence: 99%

Another polymorphic mitochondrial genome of Grampus griseus and phylogeny of family Delphinidae

Senevirathna

Yonezawa

Saka

et al. 2021

Mitochondrial DNA Part B

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Risso's dolphin (Grampus griseus Cuvier, 1812) is the only species of genus Grampus and a cosmopolitan marine inhabitant. Here, we report a polymorphic complete mitochondrial genome of G. griseus. The size of the total mitochondrial genome was 16,386 bp in length and contains 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and a control region. 37 single nucleotide polymorphic sites (SNPs) were identified compared to the references. Based on the available total mitochondrial dolphin genomes' phylogenetics, G. griseus has formed a clade with 0.1415 distance, sister to the following species of the subfamily Globicephalinae and the taxonomy of Orcinus orca still needs further investigations.

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Common dolphin (Delphinus delphis) mitochondrial genomes from Senegal reveal geographic structure across the North Atlantic but provide no support for global long‐beaked clade

Becker,

Murphy,

Archer

et al. 2024

Marine Mammal Science

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The common dolphin (Delphinus delphis) is a widely distributed species exhibiting extensive morphological diversity, with previous taxonomies recognizing multiple Delphinus species primarily based on relative beak length. We sequenced mitochondrial genomes of D. delphis morphotypes from multiple regions, calculated mitogenome nucleotide diversity (π = 0.00504), dated Delphinus mitogenome diversification to 1.27 mya, and conducted phylogenetic and population‐level analyses focusing on morphotype and geographic origin. We present the first Delphinus sequencing data from Senegal, at the edge of where long‐ and short‐beaked dolphins co‐occur in the Atlantic, but only recovering stranded dolphins with long or indeterminate beak lengths. While we detected little genetic structure across most of the North Atlantic, fixation indices demonstrate that Senegalese dolphins are distinct. Geography did not reliably predict phylogeny, with few monophyletic localities, but we do infer a monophyletic group of long‐beaked dolphins from California, Peru, and possibly China. However, neither Senegalese long‐beaked dolphins nor long‐beaked D. d. tropicalis are closely related to Pacific long‐beaked dolphins, providing no support for a worldwide long‐beaked clade (formerly D. capensis). Our findings reveal a distinctive Senegal Delphinus population and provide a foundation for global genomic analyses to further investigate the evolution of Delphinus morphotypes.

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Characterization of the complete mitochondrial genome and phylogenetic analysis of the common dolphin Delphinus delphis (Cetacea: Delphinidae)

Cited by 3 publications

References 9 publications

The conservation of the endangered Mediterranean common dolphin (Delphinus delphis): Current knowledge and research priorities

The conservation of the endangered Mediterranean common dolphin (Delphinus delphis): Current knowledge and research priorities

Another polymorphic mitochondrial genome of Grampus griseus and phylogeny of family Delphinidae

Common dolphin (Delphinus delphis) mitochondrial genomes from Senegal reveal geographic structure across the North Atlantic but provide no support for global long‐beaked clade

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