Incorporating palaeogeography into ancestral area estimation can explain the disjunct distribution of land snails in Macaronesia and the Balearic Islands (Helicidae: Allognathini)

Neiber, Marco T.; Chueca, Luis J.; Caro, Amaia; Teixeira, Dinarte; Schlegel, Kevin A.; Gómez‐Moliner, Benjamín J.; Walther, Frank; Glaubrecht, Matthias; Hausdorf, Bernhard

doi:10.1016/j.ympev.2021.107196

Cited by 9 publications

(4 citation statements)

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“…The existence of the genus Tartessiberus would not only imply an unusually young genus (~ 5 Ma versus Iberus at 18. 5 Ma; Neiber et al 2021 ) but also the paraphyly of Iberus , suggesting the need for immense taxonomic changes. One other genus, Pseudotachea C. R. Boettger, 1909, remains positioned within the Iberus clade though Neiber et al (2021) suggest its synonymization with Iberus .…”

Section: Discussionmentioning

confidence: 99%

“…5 Ma; Neiber et al 2021 ) but also the paraphyly of Iberus , suggesting the need for immense taxonomic changes. One other genus, Pseudotachea C. R. Boettger, 1909, remains positioned within the Iberus clade though Neiber et al (2021) suggest its synonymization with Iberus . Therefore, with Tartessiberus and Pseudotachea synonymized with Iberus , the latter remains monophyletic, which implies an ancient evolutionary lineage and origin for the Iberian Peninsula.…”

Section: Discussionmentioning

confidence: 99%

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Phylogenetic evidence suggests the non-validity of the Iberian land snail genus Tartessiberus and confirms its synonymy with Iberus (Helicidae)

Jowers,

Liétor,

Tudela

et al. 2024

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The monospecific genus Tartessiberus was described in the year 2021 including a single species (T. cilbanus). However, its description relied solely on morphological and anatomical data. In the present work, we use a fraction of the mitochondrial DNA cytochrome oxidase subunit I (COI), 16S ribosomal RNA (16S rRNA) and the nuclear large ribosomal subunit (LSU) to clarify its validity through phylogenetic positioning. Knowledge of the distribution of this species is also improved by citing new locations and expanding the geographical range to approximately 200 km2. Additionally, a morphometric analysis of 259 shells is presented for comparisons with shells of the Iberus marmoratus complex and testing the power of conchological features as a tool for specimen identification. The relatively high conchological variability found for T. cilbanus, together with the discovery of populations with intermediate conchological features between T. cilbanus and other closely related taxa, suggest that the determination of this species should be based on genetic criteria. Our molecular analyses demonstrate that T. cilbanus belongs to the Iberus genus, and thus, we proceed to update its taxonomic status to Iberus cilbanuscomb. nov., and, thus, to consider Tartessiberus from now on as a junior synonym of Iberus.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Phylogenetic evidence suggests the non-validity of the Iberian land snail genus Tartessiberus and confirms its synonymy with Iberus (Helicidae)

Jowers,

Liétor,

Tudela

et al. 2024

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“…It is therefore not surprising that most of the endemic Macaronesian flora and fauna has its closest relatives in nearby continental regions and a large number of Macaronesian endemics are shared between two or more archipelagos; the Canary Islands and Madeira being the islands sharing the largest number of endemic species [16,19,20]. Nevertheless, some groups display unusually disjunct distributions, for example, some elements of the flora and fauna have sister taxa in the east Mediterranean, Eurosiberia, East Asia, East Africa, South Africa, and the New World [16,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Origins of the central Macaronesian psyllid lineages (Hemiptera; Psylloidea) with characterization of a new island radiation on endemic Convolvulus floridus (Convolvulaceae) in the Canary Islands

Bastin,

Reyes-Betancort,

Siverio de la Rosa

et al. 2024

PLoS ONE

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A molecular survey of native and adventive psyllids in the central Macaronesian islands provides the first comprehensive phylogenetic assessment of the origins of the psyllid fauna of the Canary and Madeira archipelagos. We employ a maximum likelihood backbone constraint analysis to place the central Macaronesian taxa within the Psylloidea mitogenome phylogeny. The native psyllid fauna in these central Macaronesian islands results from an estimated 26 independent colonization events. Island host plants are predicted by host plants of continental relatives in nearly all cases and six plant genera have been colonized multiple times (Chamaecytisus, Convolvulus, Olea, Pistacia, Rhamnus, and Spartocytisus) from the continent. Post-colonization diversification varies from no further cladogenesis (18 events, represented by a single native taxon) to modest in situ diversification resulting in two to four native taxa and, surprisingly, given the diverse range of islands and habitats, only one substantial species radiation with more than four native species. Specificity to ancestral host plant genera or family is typically maintained during in situ diversification both within and among islands. Characterization of a recently discovered island radiation consisting of four species on Convolvulus floridus in the Canary Islands shows patterns and rates of diversification that reflect island topographic complexity and geological dynamism. Although modest in species diversity, this radiation is atypical in diversification on a single host plant species, but typical in the primary role of allopatry in the diversification process.

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“…recent revision of the taxonomy means the genus Cepaea now contains only two species, C. nemoralis and C. hortensis, with C. sylvatica and C. vindobonesis removed to another genus, Caucasotachea(Kajtoch et al, 2017). As the known sister taxa to Cepaea are Iberian(Neiber et al, 2016(Neiber et al, , 2021Neiber & Hausdorf, 2015a), then a guess is that the ancestor of Cepaea itself may have originated in Iberia, subsequently colonizing the rest of Europe. Unfortunately, the genomic data presented here do not easily inform on the origination of the genus or the evolution of the polymorphism.…”

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confidence: 99%

Deep structure, long‐distance migration and admixture in the colour polymorphic land snail Cepaea nemoralis

Gonzalez

Saenko

Davison

2022

J of Evolutionary Biology

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Although snails of the genus Cepaea have historically been important in studying colour polymorphism, an ongoing issue is that there is a lack of knowledge of the underlying genetics of the polymorphism, as well as an absence of genomic data to put findings in context. We, therefore, used phylogenomic methods to begin to investigate the post‐glacial history of Cepaea nemoralis, with a long‐term aim to understand the roles that selection and drift have in determining both European‐wide and local patterns of colour polymorphism. By combining prior and new mitochondrial DNA data from over 1500 individuals with ddRAD genomic data from representative individuals across Europe, we show that patterns of differentiation are primarily due to multiple deeply diverged populations of snails. Minimally, there is a widespread Central European population and additional diverged groups in Northern Spain, the Pyrenees, as well as likely Italy and South Eastern Europe. The genomic analysis showed that the present‐day snails in Ireland and possibly some other locations are likely descendants of admixture between snails from the Pyrenees and the Central European group, an observation that is consistent with prior inferences from mitochondrial DNA alone. The interpretation is that C. nemoralis may have arrived in Ireland via long‐distance migration from the Pyrenean region, subsequently admixing with arrivals from elsewhere. This work, therefore, provides a baseline expectation for future studies on the genetics of the colour polymorphism, as well as providing a comparator for similar species.

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Incorporating palaeogeography into ancestral area estimation can explain the disjunct distribution of land snails in Macaronesia and the Balearic Islands (Helicidae: Allognathini)

Cited by 9 publications

References 84 publications

Phylogenetic evidence suggests the non-validity of the Iberian land snail genus Tartessiberus and confirms its synonymy with Iberus (Helicidae)

Phylogenetic evidence suggests the non-validity of the Iberian land snail genus Tartessiberus and confirms its synonymy with Iberus (Helicidae)

Origins of the central Macaronesian psyllid lineages (Hemiptera; Psylloidea) with characterization of a new island radiation on endemic Convolvulus floridus (Convolvulaceae) in the Canary Islands

Deep structure, long‐distance migration and admixture in the colour polymorphic land snail Cepaea nemoralis

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