Forgotten for decades: Lake Lanao and the genetic assessment of its mollusc diversity

Stelbrink, Björn; Rintelen, Thomas von; Albrecht, Christian; Clewing, Catharina; Naga, Pipälawan O.

doi:10.1007/s10750-018-3666-0

Cited by 13 publications

(8 citation statements)

References 45 publications

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“…High rates of gain and loss in shell sculpture explain why coarsely sculptured shells are predominantly found in Bellamyinae-clade A in several independent lineages, and not more extensively in clade B, which comprises various extinct species from the African Great Lakes that are renowned for their high shell disparity (see e.g., Van Damme and Pickford 1999;Salzburger et al 2014). Such high rates of shell evolution also explain the sympatric occurrence of closely related but morphologically disparate species in a single lake system such as Lake Inlé in Myanmar (Annandale 1919) and Lake Lanao in the Philippines (Bartsch 1907;Stelbrink et al 2019), and why both weakly and heavily sculptured genera (Sinotaia vs. Margarya) co-occur in several Yunnan Plateau lakes (see e.g., Zhang et al 2015). Whereas the generally low dispersal ability together with high transition rates in lentic habitats triggered both in situ diversification and a high versatility in shell evolution, a selective pressure towards smooth shells seems to predominate in lotic habitats.…”

Section: Patterns and Drivers Of Shell Evolutionmentioning

confidence: 98%

“…Such examples are found in the extant viviparid faunas of Lake Lanao, Philippines (Torotaia spp. ; Bartsch 1907;Stelbrink et al 2019) and Lake Inlé, Myanmar (Taia spp. ; e.g., Annandale 1924), but also the fossil assemblages of Neothauma from the palaeo-Lake Obweruka in the East African Rift (see e.g., Van Damme and Pickford 1999;Salzburger et al 2014) and Margarya/Macromargarya from the Chinese palaeo-Lake Nanning (Tian et al 2013(Tian et al , 2018.…”

Section: Introductionmentioning

confidence: 99%

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Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)

et al. 2020

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The Viviparidae, commonly known as River Snails, is a dominant group of freshwater snails with a nearly worldwide distribution that reaches its highest taxonomic and morphological diversity in Southeast Asia. The rich fossil record is indicative of a probable Middle Jurassic origin on the Laurasian supercontinent where the group started to diversify during the Cretaceous. However, it remains uncertain when and how the biodiversity hotspot in Southeast Asia was formed. Here, we used a comprehensive genetic data set containing both mitochondrial and nuclear markers and comprising species representing 24 out of 28 genera from throughout the range of the family. To reconstruct the spatiotemporal evolution of viviparids on a global scale, we reconstructed a fossil-calibrated phylogeny. We further assessed the roles of cladogenetic and anagenetic events in range evolution. Finally, we reconstructed the evolution of shell features by estimating ancestral character states to assess whether the appearance of sculptured shell morphologies was driven by major habitat shifts. The molecular phylogeny supports the monophyly of the three subfamilies, the Bellamyinae, Lioplacinae, and Viviparinae, but challenges the currently accepted genus-level classification in several cases. The almost global distribution of River Snails has been influenced both by comparatively ancient vicariance and more recent founder events. In Southeast Asia, Miocene dispersal was a main factor in shaping the modern species distributions. A recurrent theme across different viviparid taxa is that many species living in lentic waters exhibit sculptured shells, whereas only one strongly sculptured species is known from lotic environments. We show that such shell sculpture is habitat-dependent and indeed evolved several times independently in lentic River Snails. Considerably high transition rates between shell types in lentic habitats probably caused the co-occurrence of morphologically distinct shell types in several lakes. In contrast, directional evolution toward smooth shells in lotic habitats, as identified in the present analyses, explains why sculptured shells are rarely found in these habitats. However, the specific factors that promoted changes in shell morphology require further work. [biogeographical analyses; fossil-calibrated phylogeny; fossil-constrained analyses; Southeast Asia; stochastic character mapping.]

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Section: Patterns and Drivers Of Shell Evolutionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)

et al. 2020

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“…2008; Stelbrink et al . 2019, and references therein). In these lakes, freshwater snails from different families have formed flocks of endemic species and even genera not found elsewhere.…”

Section: Discussionmentioning

confidence: 99%

Trapped on the Roof of the World: taxonomic diversity and evolutionary patterns of Tibetan Plateau endemic freshwater snails (Gastropoda: Lymnaeidae: Tibetoradix)

et al. 2021

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The high-elevation Tibetan Plateau (western China) is inhabited by a unique, though not particularly speciesrich, community of organisms. We explored the species content and evolutionary history of the Tibetan Plateau endemic freshwater snail genus Tibetoradix. Phylogenetic relationships within the genus were reconstructed based on available sequence data. We used a single-rate Poisson Tree Processes approach for species delimitation and compared putative species-level clades with already described taxa. We found that the genus consists of at least 6 species, of which we described 4 as new to science. Shell and soft body morphology was examined and the radula in Tibetoradix was described for the first time. Based on our findings, the diversification of the genus did not result in a prominent morphological differentiation and a number of species can be regarded as morphologically cryptic. Single species found in different drainage areas indicate relatively good passive dispersal abilities of the snails. The allopatric distribution of the species could result from competitive exclusion between them. The absence of Tibetoradix spp. outside the Tibetan Plateau could be explained by a scenario of an "evolutionary trap", where adaptations to high elevation conditions prevented the taxa from a successful colonization of lower elevations.

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“…R. rubiginosa has an extensive synonymy and a special study is required to clarify the taxonomic identity of numerous nominal species of Radix, described from Indonesia and adjacent countries. Some of these names, such as Radix quadrasi (Möllendorff, 1898) of Philippines, have been used in recent literature, but may well be synonyms of R. rubiginosa (see, for example, Stelbrink et al 2019). Type species.…”

Section: Radix (Radix) Rubiginosa (Michelin 1831)mentioning

confidence: 99%

Taxonomic assessment of genetically-delineated species of radicine snails (Mollusca, Gastropoda, Lymnaeidae)

Vinarski¹,

Aksenova²,

Bolotov³

2020

ZSE

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The article represents an overview of 29 biological species of the radicine snails (genera Ampullaceana Servain, 1882, Bullastra Bergh, 1901, Racesina Vinarski & Bolotov, 2018, Kamtschaticana Kruglov & Starobogatov, 1984, Myxas G.B. Sowerby I, 1822, Orientogalba Kruglov & Starobogatov, 1985; Peregriana Servain, 1882, Radix Montfort, 1810, and Tibetoradix Bolotov, Vinarski & Aksenova, 2018) recovered during our previous molecular taxonomic study (Aksenova et al. 2018a; Scientific Reports, 8: 11199). For each species, the following information is provided: scientific name, a (non-exhaustive) list of synonyms, type locality, type materials, shell and copulative apparatus morphology, distribution, and nomenclatural and taxonomic remarks. The colour images of shell(s) of each species are also given as well as illustrations of the copulatory apparatuses. We revealed a great conchological variation in the radicines, both intra- and interspecific, alongside with striking uniformity in the structure of their copulatory apparatuses. The latter was once thought to be a reliable tool for species delineation and identification in this snail group. The total of 29 species characterised here represents, probably, only a subset of the global taxonomic richness of the radicine snails, which approaches 50 species.

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Forgotten for decades: Lake Lanao and the genetic assessment of its mollusc diversity

Cited by 13 publications

References 45 publications

Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)

Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)

Trapped on the Roof of the World: taxonomic diversity and evolutionary patterns of Tibetan Plateau endemic freshwater snails (Gastropoda: Lymnaeidae: Tibetoradix)

Taxonomic assessment of genetically-delineated species of radicine snails (Mollusca, Gastropoda, Lymnaeidae)

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