Mitogenomic phylogeny of cone snails endemic to Senegal

Abalde, Samuel; Jiménez‐Tenorio, Manuel; Afonso, Carlos M.L.; Zardoya, Rafael

doi:10.1016/j.ympev.2017.04.020

Cited by 18 publications

(40 citation statements)

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“…We cannot confidently date when bursts of diversification leading to current species richness within each genus occurred as we had few instances in the phylogeny in which more than one species per genus were included. However, all analysed within‐genus diversifications were dated in the Pliocene and Pleistocene concurring with glacial–interglacial events (Lisiecki & Raymo, ) in agreement with evolutionary studies analysing the radiation of cones in the Cabo Verde archipelago and the Senegal coast (Abalde, Tenorio, Afonso, & Zardoya, ; Abalde, Tenorio, Afonso, Uribe, et al, ; Cunha et al, ; Duda & Rolán, ). The early diversification of Conidae occurred in the Indo‐Pacific region, which is consistent with the high species richness of this region.…”

Section: Discussionsupporting

confidence: 84%

“…Therefore, the challenge is going beyond phylogenies of cones based on few genes (Aman et al, ; Puillandre et al, ) and reconstruct robust phylogenetic relationships among cone genera sensu Tucker and Tenorio () based on multilocus sequences data sets such as the recent one based on concatenating hundreds to thousands of exon sequences (Phuong & Mahardika, ). An additional source of molecular markers for phylogenetic inference is mitochondrial (mt) genomes, which have been widely used in gastropods and proven to be particularly useful for resolving phylogenies at the family level (Osca, Templado, & Zardoya, ; Uribe, Williams, Templado, Abalde, & Zardoya, ) as well as for disentangling recent radiation events (Abalde, Tenorio, Afonso, & Zardoya, ; Abalde, Tenorio, Afonso, Uribe, et al, ). Although there are currently about 150 mt genomes of the family Conidae available in GenBank at NCBI (https://www.ncbi.nlm.nih.gov/), the total diversity of the group is clearly underrepresented as these mitogenomes belong to only 11 out of the currently 89 described genera (the genus Trovaoconus of Tucker and Tenorio () was recently synonymized with Kalloconus by Abalde, Tenorio, Afonso, Uribe, et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Conidae phylogenomics and evolution

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Understanding the relative role of different evolutionary processes leading to the extraordinary morphological, ecological and species diversity of cone snails requires a robust phylogeny, which thus far has been elusive. Here, we constructed a mitochondrial (mt) genome data set, which included four newly sequenced mt genomes, 25 publicly available mt genomes and 24 data sets with all mt protein-coding and rRNA genes assembled from venom gland transcriptomes. In total, we analysed 42 different species representing 27 genera of cone snails, that is, about one third of the generic diversity of the group. In addition, we used the RNA-Seq reads to assemble 21 nuclear genes, which were concatenated in a nuclear data set. Finally, a combined data set including mt and nuclear genes was also constructed. The three data matrices were analysed with probabilistic methods, site-homogeneous and site-heterogeneous models, and with protein-coding genes both at the amino acid and nucleotide levels.Diet specialization, radular morphology and the type of protoconch (paucispiral or multispiral indicating lecithotrophic or planktonic larvae, respectively) as well as conotoxin diversity were mapped onto the reconstructed mt phylogeny, and a chronogram dating mayor cladogenetic events within the group was also reconstructed. K E Y W O R D SConidae, conotoxins, mitogenome, phylogenomics, transcriptomics | 211 ABALDE Et AL. ORCID Manuel J. Tenoriohttps://orcid.org/0000-0003-4088-4958Rafael Zardoya https://orcid.org/0000-0001-6212-9502

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Conidae phylogenomics and evolution

et al. 2019

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“…In this regard, species delimitation could greatly improve with the aid of robust molecular phylogenies, which could be used in addition as framework to uncover the evolutionary patterns and processes underlying the diversification of the group. While reconstructing a robust phylogeny for all described cone species worldwide is cumbersome and at present unrealistic within the framework of a single study, it is possible, however, to accomplish a proof-of-concept study in a particular region [ 23 ].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the origin of this clade is clearly Macaronesian/Mediterranean and these cones are only distantly related to the geographically closer cones endemic to Senegal. These latter cones were ascribed to the genus Lautoconus (as was the case of L. guanche from Canary islands, deeply nested within the clade of Senegal cones; [ 23 ]). However, the closest sister group relationship of Africonus and L. ventricosus requires formal description of a different genus for Senegal cones (plus L. guanche ), which will be done elsewhere.…”

Section: Discussionmentioning

confidence: 99%

“…Here, we used nearly complete mitochondrial (mt) genomes, which have proven to successfully reconstruct robust phylogenies of Conidae [ 22 ] and of particular groups such as the cones endemic to Senegal [ 23 ]. In this study, we sequenced the nearly complete mt genomes of 88 individuals representing different populations and species of Africonus and Trovaoconus endemic to Cabo Verde.…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic relationships of cone snails endemic to Cabo Verde based on mitochondrial genomes

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BackgroundDue to their great species and ecological diversity as well as their capacity to produce hundreds of different toxins, cone snails are of interest to evolutionary biologists, pharmacologists and amateur naturalists alike. Taxonomic identification of cone snails still relies mostly on the shape, color, and banding patterns of the shell. However, these phenotypic traits are prone to homoplasy. Therefore, the consistent use of genetic data for species delimitation and phylogenetic inference in this apparently hyperdiverse group is largely wanting. Here, we reconstruct the phylogeny of the cones endemic to Cabo Verde archipelago, a well-known radiation of the group, using mitochondrial (mt) genomes.ResultsThe reconstructed phylogeny grouped the analyzed species into two main clades, one including Kalloconus from West Africa sister to Trovaoconus from Cabo Verde and the other with a paraphyletic Lautoconus due to the sister group relationship of Africonus from Cabo Verde and Lautoconus ventricosus from Mediterranean Sea and neighboring Atlantic Ocean to the exclusion of Lautoconus endemic to Senegal (plus Lautoconus guanche from Mauritania, Morocco, and Canary Islands). Within Trovaoconus, up to three main lineages could be distinguished. The clade of Africonus included four main lineages (named I to IV), each further subdivided into two monophyletic groups. The reconstructed phylogeny allowed inferring the evolution of the radula in the studied lineages as well as biogeographic patterns. The number of cone species endemic to Cabo Verde was revised under the light of sequence divergence data and the inferred phylogenetic relationships.ConclusionsThe sequence divergence between continental members of the genus Kalloconus and island endemics ascribed to the genus Trovaoconus is low, prompting for synonymization of the latter. The genus Lautoconus is paraphyletic. Lautoconus ventricosus is the closest living sister group of genus Africonus. Diversification of Africonus was in allopatry due to the direct development nature of their larvae and mainly triggered by eustatic sea level changes during the Miocene-Pliocene. Our study confirms the diversity of cone endemic to Cabo Verde but significantly reduces the number of valid species. Applying a sequence divergence threshold, the number of valid species within the sampled Africonus is reduced to half.Electronic supplementary materialThe online version of this article (10.1186/s12862-017-1069-x) contains supplementary material, which is available to authorized users.

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The Conoidea and Their Toxins: Evolution of a Hyper-Diversified Group

Puillandre¹,

Dutertre²

2018

Biodiversity and Evolution

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Mitogenomic phylogeny of cone snails endemic to Senegal

Cited by 18 publications

References 60 publications

Conidae phylogenomics and evolution

Conidae phylogenomics and evolution

Phylogenetic relationships of cone snails endemic to Cabo Verde based on mitochondrial genomes

The Conoidea and Their Toxins: Evolution of a Hyper-Diversified Group

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