The species flocks of lacustrine gastropods: Tylomelania on Sulawesi as models in speciation and adaptive radiation

Glaubrecht, Matthias; Rintelen, Thomas von

doi:10.1007/978-1-4020-9582-5_13

Cited by 9 publications

(14 citation statements)

References 34 publications

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“…Therefore, ancestral polymorphism is refuted as a plausible cause of the observed mitochondrial diversity. It may well account for mismatches at the magnitude of about 1 % sequence divergence as had been suggested in other studies of pachychilids (e.g., Glaubrecht & Kaehler 2004;Glaubrecht & Rintelen 2008).…”

Section: Haplotype Diversitymentioning

confidence: 87%

“…Among pachychilids, hybridisation has been suggested to occur within flocks of closely related species. For instance, the viviparous gastropod genus Tylomelania has radiated extensively in the Central Lakes of Sulawesi where it forms several lake-specific clades (Rintelen et al 2004;Rintelen et al 2007;Glaubrecht & Rintelen 2008). Within these clades similar patterns of incongruence between mtDNA and morphological data were found (Rintelen et al 2007) and also (but not exclusively) attributed to interspecific hybridisation (Rintelen et al 2009).…”

Section: Hybridisation As Plausible Cause For Incongruencementioning

confidence: 89%

“…The taxonomic incongruence was attributed to a number of causes, such as incomplete lineage sorting among evolutionarily young species flocks (Glaubrecht & Kaehler 2004;Kaehler & Glaubrecht 2006;Rintelen et al 2007), incomplete lineage sorting among evolutionarily old lineages (Dillon & Frankis 2004;Dillon & Robinson 2009), the presence of unrecognised morphologically cryptic species (Lydeard et al 1998;Minton & Lydeard 2003), or taxonomic oversplitting of not well differentiated species complexes (Lee et al 2007). Although there are plenty of cases from a wide range of other animal groups that emphasised the significance of introgression of mtDNA through interspecific hybridisation as an explanation for such incongruence, this process has rarely been taken into consideration for cerithioideans (Glaubrecht & Kaehler 2004;Kaehler & Glaubrecht 2006;Glaubrecht & Rintelen 2008;). This neglect is remarkable since according to the hybrid swarm theory of Seehausen (2004) hybridisation appears to be a realistic explanation for rampant mismatch between mitochondrial gene trees and morphology-based species delineations at least in evolutionarily young species flocks that result from adaptive radiations.…”

Section: Introductionmentioning

confidence: 96%

“…Studies of all constituent families have revealed partially rampant conflicts between the branching patterns of mitochondrial gene trees and the delineation of (putative) species by means of morphology (Lydeard et al 2002;Minton & Lydeard 2003;Dillon & Frankis 2004;Glaubrecht & Kaehler 2004;Wilson et al 2004;Kaehler & Glaubrecht 2006;Lee et al 2007;Rintelen et al 2007;Glaubrecht & Rintelen 2008). The taxonomic incongruence was attributed to a number of causes, such as incomplete lineage sorting among evolutionarily young species flocks (Glaubrecht & Kaehler 2004;Kaehler & Glaubrecht 2006;Rintelen et al 2007), incomplete lineage sorting among evolutionarily old lineages (Dillon & Frankis 2004;Dillon & Robinson 2009), the presence of unrecognised morphologically cryptic species (Lydeard et al 1998;Minton & Lydeard 2003), or taxonomic oversplitting of not well differentiated species complexes (Lee et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Hybridisation as potential source of incongruence in the morphological and mitochondrial diversity of a Thai freshwater gastropod (Pachychilidae, Brotia H. Adams, 1866)

Köhler

Deein²

2010

Zool. Reihe

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Conflicts between morphology‐based taxonomy and mitochondrial phylogenies are a rampant phenomenon among cerithioidean freshwater gastropods, which is yet not completely understood. We have investigated snail populations sampled from several parts of the Moei River drainage in central Thailand that belong to a monophyletic mtDNA clade formally known as Brotia pagodula and recovered large degrees of variation in both the shell and mitochondrial sequences. When assessed independently, the levels of morphological and mitochondrial differentiation were indicative of the existence of more than one distinct species. Analyses of the shell resulted in the identification of two distinct morphotypes with a conical or elongate shape, respectively. Analyses of partial sequences of the mitochondrial genes 16S and COI revealed the existence of up to five well differentiated haplotype lineages. Rampant mismatch is observed when morphotypes are mapped onto the mtDNA phylogeny. Several explanations for this observation are discussed, such as the presence of paralogous sequences, incomplete lineage sorting of ancestral polymorphisms, presence of morphologically cryptic species and introgression of foreign haplotypes through hybridisation. The presence of nuclear gene copies of mitochondrial genes is refuted and incomplete lineage sorting at levels of up to 12% sequence divergence in COI in potentially panmictic populations is considered highly unlikely. We conclude that the discordance between morphologic and phylogenetic patterns are best explained by introgression of mtDNA haplotypes. Since Southeast Asian Pachychilidae are known to be poor dispersers and speciation is primarily thought to occur in allopatry, tectonic events and river captures during the Cenozoic are discussed as a potential factors mediating secondary contact between primarily allopatric sister species. We hypothesise that introgressive hybridisation between closely related species due to secondary contact has the potential to explain the mismatch between mitochondrial phylogenies and morphology‐based species trees found in many groups of cerithioidean freshwater gastropods. This hypothesis requires further testing by future studies. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Haplotype Diversitymentioning

confidence: 87%

Section: Hybridisation As Plausible Cause For Incongruencementioning

confidence: 89%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hybridisation as potential source of incongruence in the morphological and mitochondrial diversity of a Thai freshwater gastropod (Pachychilidae, Brotia H. Adams, 1866)

Köhler

Deein²

2010

Zool. Reihe

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“…in cichlids, but most recently also in invertebrates such as pachychilid and paludomid gastropods (e.g. Von Von Rintelen & Glaubrecht 2005;Glaubrecht & Von Rintelen 2008).…”

mentioning

confidence: 99%

Adaptive radiation of thalassoid gastropods in Lake Tanganyika, East Africa: morphology and systematization of a paludomid species flock in an ancient lake

Glaubrecht

2008

Zool. Reihe

Self Cite

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The paludomid gastropods of Lake Tanganyika are one of the most spectacular examples of species flocks among molluscs. However, whether they provide an example of intralacustrine speciation and truly adaptive radiation still remains unresolved, with their monophyly and phylogenetic relationships within freshwater Cerithioidea still to be rigorously evaluated. In the course of providing the data for a future comprehensive phylogenetic analysis, this paper using SEM technique describes and documents the morphology of the adult and particularly the embryonic shell (ornamentation and size) as well as the radular anatomy (including cusp pattern), with remarks on the ontogeny and ecology, for 19 species belonging to 10 genera, mainly from a collection from Kigoma Bay, East shore of Lake Tanganyika, Tanzania. The species studied live either on soft sandy and silty bottoms or on primary or secondary hard substrata, representing two ecological guilds, with rocky substrata supporting a richer species assemblage (including five taxa of Lavigeria) than soft substrata. In addition, a systematic framework for these gastropods is suggested, with protoconch and radular morphology found to be most useful to characterize and differentiate genera and species, while teleoconch and opercular features correspond to three distinct lineages corroborated also by molecular data, viz. the Paramelaniinae with paludomid‐like concentric operculum with spiral nucleus, the viviparous Nassopsinae Kesteven, 1903 (= Lavigeriinae Thiele, 1925) with subspiral to paucispiral operculum, and the minute sand‐dwelling Syrnolopsinae with paucispiral operculum. Oviparity was found in 70% of the 32 thalassoid species from 17 genera and represents the most common and presumably ancestral reproductive mode within Tanganyikan gastropods, while two different viviparous strategies can be differentiated in 20% of the species (in four other species the reproductive mode is unknown). Finally, some standard hypotheses as to the question of relationships with Thiaridae, monophyly, in situ radiation and viviparity as a key innovation for this radiation are briefly reviewed and discussed. It is concluded that all studied species of the thalassoid species flock are actually members of the Paludomidae instead of the true Thiaridae, representing an evolutionary lineage of ancient, and most likely originally riverine Cerithioidea that predated the formation of the East African Rift system. Consequently, neither the broad spectrum of phenotypes nor the unique morphological features should be viewed as adaptations during the course of exclusively intralacustrine speciation and adaptive radiation within Lake Tanganyika. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Speciation patterns and processes in the zooplankton of the ancient lakes of Sulawesi Island, Indonesia

Vaillant

Bock

Haffner

et al. 2013

Ecology and Evolution

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Although studies of ancient lake fauna have provided important insights about speciation patterns and processes of organisms in heterogeneous benthic environments, evolutionary forces responsible for speciation in the relatively homogenous planktonic environment remain largely unexplored. In this study, we investigate possible mechanisms of speciation in zooplankton using the freshwater diaptomids of the ancient lakes of Sulawesi, Indonesia, as a model system. We integrate phylogenetic and population genetic analyses of mitochondrial and nuclear genes with morphological and genome size data. Overall, our results support the conclusion that colonization order and local adaptation are dominant at the large, island scale, whereas at local and intralacustrine scales, speciation processes are regulated by gene flow among genetically differentiated and locally adapted populations. In the Malili lakes, the diaptomid populations are homogenous at nuclear loci, but show two highly divergent mitochondrial clades that are geographically restricted to single lakes despite the interconnectivity of the lake systems. Our study, based on coalescent simulations and population genetic analyses, indicates that unidirectional hybridization allows gene flow across the nuclear genome, but prevents the introgression of mitochondria into downstream populations. We suggest that hybridization and introgression between young lineages is a significant evolutionary force in freshwater plankton.

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The species flocks of lacustrine gastropods: Tylomelania on Sulawesi as models in speciation and adaptive radiation

Cited by 9 publications

References 34 publications

Hybridisation as potential source of incongruence in the morphological and mitochondrial diversity of a Thai freshwater gastropod (Pachychilidae, Brotia H. Adams, 1866)

Hybridisation as potential source of incongruence in the morphological and mitochondrial diversity of a Thai freshwater gastropod (Pachychilidae, Brotia H. Adams, 1866)

Adaptive radiation of thalassoid gastropods in Lake Tanganyika, East Africa: morphology and systematization of a paludomid species flock in an ancient lake

Speciation patterns and processes in the zooplankton of the ancient lakes of Sulawesi Island, Indonesia

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