High unexpected genetic diversity of a narrow endemic terrestrial mollusc

Madeira, Pedro M; Chefaoui, Rosa M.; Cunha, Regina L.; Moreira, Francisco; Dias, Susana; Calado, Gonçalo; Castilho, Rita

doi:10.7717/peerj.3069

Cited by 3 publications

(3 citation statements)

References 68 publications

(79 reference statements)

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“…where the genetic variability within species can be surprisingly high (Madeira et al, 2017;Mona, Ray, Arenas, & Excoffier, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The subsequent divergence events may reflect ongoing karstification and depletion of the local hydrological networks due to the general Pleistocene aridisation in southern Europe(Macklin, Lewin, & Woodward, 2012;Tzedakis, 2007).The fragmentation and isolation of habitats belonging to one water basin may lead to pronounced biodiversity, also at the genetic level(Botero-Delgadillo et al, 2017;Madeira et al, 2017). F I G U R E 4 Population connectivity illustrated by a matrix of pairwise F ST values for Homoeogammarus scutarensis.…”

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confidence: 99%

“…Historical demography of Homoeogammarus scutarensis illustrated with extended Bayesian skyline plots (EBSP) [Colour figure can be viewed at wileyonlinelibrary.com] TA B L E 4 Results of mismatch distribution analysis and Tajima's D and Fu's FS neutrality tests for Homoeogammarus scutarensis SSD, the sum of sqauare deviations. Its population was investigated byMadeira et al (2017), who discovered unexpectedly high genetic diversity with five genetic lineages, thus five evolutionary histories within one species Falniowski, Szarowska, Glöer, and Pešić (2012). White dots are indicating pairs of sampling sites between which F ST values were statistically significant and which are significantly different according to the exact test for population differentiation (p ≤ .05) [Colour figure can be viewed at wileyonlinelibrary.com] among which one was shared with H. scutarensis.…”

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Long‐term within‐basin isolation patterns, different conservation units, and interspecific mitochondrial DNA introgression in an amphipod endemic to the ancient Lake Skadar system, Balkan Peninsula

et al. 2019

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1. Investigation of biodiversity, including genetic diversity within species, is crucial for rational planning of nature conservation and species protection. Endemics or narrow-ranged taxa, sensitive to alteration of physical and chemical conditions, may serve as local bioindicators. 2.Homoeogammarus scutarensis is an endemic, cold-adapted amphipod crustacean, inhabiting fragmented spring habitats, within a relatively small area of the Lake Skadar basin. The basin is recently under heavy anthropogenic influence leading to habitat deterioration.3. Genetic diversity within H. scutarensis was investigated using the mitochondrial cytochrome c oxidase subunit I and the nuclear 28S ribosomal RNA markers.Genetic diversity within the mitochondrial (mt)DNA appeared to be surprisingly high as for the limited spatial scale. The history of within-species divergence dates back at least to the Pliocene. 4. A case of interspecific mtDNA introgression from the endemic H. scutarensis to the widespread and partly sympatric Homoeogammarus thoni was observed in one of the studied populations. Demographic analysis showed that the demography of H. scutarensis population hasbeen stable, without evidence of expansion. Thus, we believe that H. scutarensis, responsive to environmental changes, is a proper model mirroring the conditions in sensitive habitats of the Lake Skadar basin. To protect ongoing evolutionary processes, the conservation measures for this species should take into account the complex fine-scale lineage endemism patterns. This case study may also provide a hint for planning conservation strategies in other geologically old spring systems.6. Most of the localities where H. scutarensis occurs provide refugia for divergent mtDNA lineages, suggesting prolonged isolation between sites and independent evolutionary histories. We conclude that H. scutarensis is composed of two or three conservation units. One of them occupies the headwaters of the Crnojevića River and spring in its valley. The other is widespread throughout the sub-lacustrine We would like to thank

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“…where the genetic variability within species can be surprisingly high (Madeira et al, 2017;Mona, Ray, Arenas, & Excoffier, 2014).…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Long‐term within‐basin isolation patterns, different conservation units, and interspecific mitochondrial DNA introgression in an amphipod endemic to the ancient Lake Skadar system, Balkan Peninsula

et al. 2019

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Phylogeography and potential glacial refugia of terrestrial gastropod Faustina faustina (Rossmässler, 1835) (Gastropoda: Eupulmonata: Helicidae) inferred from molecular data and species distribution models

et al. 2020

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Faustina faustina is a conchologically highly diverse forest gastropod with several morphological forms. It is a Carpathian species, but it also occurs in northern isolated localities, where it was probably introduced. We performed the first phylogeographic analysis of 22 populations, based on three molecular markers: COI, ITS-2, and 28S rRNA. Genetic data were complemented by paleo-distribution models of spatial occupancy during the Last Glacial Maximum to strengthen inferences of refugial areas. We discovered high genetic variability of COI sequences with p-distances between haplotypes ranged from 0.2 to 18.1% (6.3–16.6% between clades). For nuclear markers, a haplotype distribution pattern was revealed. Species distribution models indicated a few potential refugia in the Carpathians, with the most climatically stable and largest areas in the Southern Carpathians. In some climate scenarios, putative microrefugia were also predicted in the Western and Eastern Carpathians, and in the Apuseni Mts. Our results suggest the glacial in situ survival of F. faustina and its Holocene expansion in the Sudetes. Although our genetic data as well as shell phenotypes showed considerable variation within and between studied populations, the molecular species delimitation approaches still imply only one single species. Our study contributes to the understanding of the impact of processes on shaping contemporary population genetic structure and diversity in low-dispersal, forest species.

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Deep genetic structure at a small spatial scale in the endangered land snail Xerocrassa montserratensis

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et al. 2021

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Species with small geographic ranges do not tend to have a high genetic structure, but some land snail species seem to be an exception. Xerocrassa montserratensis, an endangered land snail endemic to Catalonia (northeastern Iberian Peninsula), is an excellent model to study the processes affecting the phylogeography of specialized species of conservation concern. This species is restricted to xerophilous stony slopes and occurs within a small and fragmented area of ca. 500 km2. We sequenced the COI barcode region of 152 individuals from eight sites covering the entire range of the species. We found four genetic groups mostly coincident with their geographic distribution: a central ancestral group containing shared haplotypes among five localities and three groups restricted to a single locality each. Two of these derived groups were geographically and genetically isolated, while the third and most differentiated group was not geographically isolated. Geomorphologic and paleoclimatic processes during the Pleistocene can explain the divergence found between populations of this low dispersal species with historical fragmentation and secondary contacts. Nonetheless, recent passive large dispersal through streams was also detected in the central group. Overall, our study uncovered four evolutionary units, partially matching morphologically described subspecies, which should be considered in future conservation actions.

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High unexpected genetic diversity of a narrow endemic terrestrial mollusc

Cited by 3 publications

References 68 publications

Long‐term within‐basin isolation patterns, different conservation units, and interspecific mitochondrial DNA introgression in an amphipod endemic to the ancient Lake Skadar system, Balkan Peninsula

Long‐term within‐basin isolation patterns, different conservation units, and interspecific mitochondrial DNA introgression in an amphipod endemic to the ancient Lake Skadar system, Balkan Peninsula

Phylogeography and potential glacial refugia of terrestrial gastropod Faustina faustina (Rossmässler, 1835) (Gastropoda: Eupulmonata: Helicidae) inferred from molecular data and species distribution models

Deep genetic structure at a small spatial scale in the endangered land snail Xerocrassa montserratensis

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