Widespread polyphyly among Alopiinae snail genera: when phylogeny mirrors biogeography more closely than morphology

Weerd, Dennis R. Uit de; Piel, William H.; Gittenberger, E.

doi:10.1016/j.ympev.2004.07.010

Cited by 52 publications

(37 citation statements)

References 28 publications

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“…The limited amount of sequence variability observed in the ITS-2 region prevented clear resolution of its tree, although it is heuristically similar to the mtDNA trees as it identifies the same deeply rooted clades. Uit de Weerd et al (2004) also noted that the nuclear ITS-1 and ITS-2 regions were only useful in demarcation of deeply rooted Stylommatophoran gastropod clades due to their very low base pair substitution rates. The concatenated mtDNA tree is not presented because CO1 and 16S sequences were not available for all specimens and because its topology is essentially identical to the CO1 tree.…”

Section: Resultsmentioning

confidence: 99%

“…The number, placement and size of apertural lamellae also do not indicate close association, with distantly related taxa such as Vertigo inserta and V. hannai , or V. cristata and V. meramecensis possessing identical lamellae configurations. Vertigo thus appears to follow other land snail groups such the clausiliid subfamily Alopiinae from Greece (Uit de Weerd et al 2004), Gastrocoptinae from karst towers in Thailand (Tongkerd et al 2004), and eastern North American Polygyridae (Emberton 1995) in which shell features have proven unreliable indicators of phylogenetic relationships. The prediction of Pilsbry (1948) that analysis of non-conchological features would “repay cultivation” in the field of Vertigo taxonomy is thus vindicated.…”

Section: Discussionmentioning

confidence: 97%

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Evolutionary pattern and process within the Vertigo gouldii (Mollusca: Pulmonata, Pupillidae) group of minute North American land snails

Nekola

Coles

Bergthorsson

2009

Molecular Phylogenetics and Evolution

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A phylogenetic analysis of 19 sibling taxa in the Vertigo gouldii group was conducted on 73 individuals sampled across North America using DNA sequence data of the mitochondrial genes cytochrome oxidase subunit 1 (CO1) and 16S ribosomal RNA (16S), and the internal transcribed spacer-2 of the nuclear ribosomal RNA (ITS-2) gene. The results of these analyses were found incongruent with previous taxonomic concepts used to define the V. gouldii group and its composite taxa that were based entirely on conchological features. The mtDNA sequence data suggest that some previous members of the traditional V. gouldii group may be more closely related to V. modesta. They also suggest that V. gouldii may itself consist of seven species-level branches spread across two deeply rooted clades. Revision of geographical distributions on the basis of these analyses suggests that these Vertigo species may commonly possess continental-sized ranges in spite of their minute size and limited active dispersal ability. High levels of sympatry within the group are also confirmed, with up to four species being known to co-occur within single microsites. These data also suggest that rates of diversification have been non-constant. Assuming a 1%/my rate of base pair substitution, a 10-fold diversification pulse is indicated from 6.7-7.0 myBP, which would be co-incident with known mid-late Miocene global climate changes.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 97%

Evolutionary pattern and process within the Vertigo gouldii (Mollusca: Pulmonata, Pupillidae) group of minute North American land snails

Nekola

Coles

Bergthorsson

2009

Molecular Phylogenetics and Evolution

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“…Numerous studies have critically assessed the significance of morphological characters in the taxonomy of land snails (Giusti and Manganelli 1992; Schilthuizen and Gittenberger 1996; Uit de Weerd et al 2004; Holland and Hadfield 2007). It has been repeatedly noted that shell morphology in molluscs can be greatly influenced by environmental conditions (Alonso et al 1985; Chiba 1999; Pfenninger et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Molecular phylogeny, taxonomy and evolution of the land snail genusIberus(Pulmonata: Helicidae)

Elejalde

Madeira

Arrébola

et al. 2008

Journal of Zoological Systematics and Evolutionary Research

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Partial DNA sequences of two mitochondrial genes [cytochrome oxidase subunit I (COI) and 16S rRNA] from 59 specimens of Iberus were used to test the validity of the described morphospecies of this genus, and examine genetic divergences within and between main phylogenetic groups. Both gene fragments showed phylogenetic concordance. The COI gene was found to be faster evolving than the 16S gene and was fully proteincoding with no insertions or deletions. 16S rRNA was more informative than COI for resolving basal nodes. Both individual and combined analyses of the two gene fragments revealed five main phylogroups. These five groups are genetically unique lineages that are allopatrically distributed and considered to have full species status. Further subdivisions were also considered. Shell morphology was suitable for delimiting species boundaries, but several incongruences between morphology and mtDNA phylogeny were observed. These incongruences were considered consequence of hybridization between Iberus cobosi and Iberus marmoratus, and the result of shell shape polymorphism in Iberus rositai. According to spatial patterns of sequence divergence, life habits and shell morphology may be concluded that the keeled-flat shelled snails independently originated several times within Iberus and they could represent cases of similar shell adaptation to a karstic arid environment.

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“…As there are several reported cases of this phenomenon, including related genera in the subfamily Alopiinae (Giokas, 2000; Uit de Weerd & Gittenberger, 2004), this finding was not surprising. Interpreting discrepancies between the mitochondrial tree and the morphology-based system was beyond the scope of this study.…”

Section: Methodsmentioning

confidence: 60%

“…As characteristic for obligate rock-dwelling gastropods in general, their active dispersal is severely limited. Colonizing new habitat patches or migrating between populations is possible only by jump dispersals, which are relatively rare and distance-dependent events as shown by molecular evidence (Uit de Weerd, Piel, & Gittenberger, 2004; Uit de Weerd, Schneider, & Gittenberger, 2005). Hence, closely related Montenegrina populations/subspecies/species are often found spatially close to each other.…”

Section: Methodsmentioning

confidence: 99%

Range‐constrained co‐occurrence simulation reveals little niche partitioning among rock‐dwelling Montenegrina land snails (Gastropoda: Clausiliidae)

Fehér

Mason

Szekeres

et al. 2018

Journal of Biogeography

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AimTaxon co-occurrence analysis is commonly used in ecology, but it has not been applied to range-wide distribution data of partly allopatric taxa because existing methods cannot differentiate between distribution-related effects and taxon interactions. Our first aim was to develop a taxon co-occurrence analysis method that is also capable of taking into account the effect of species ranges and can handle faunistic records from museum databases or biodiversity inventories. Our second aim was to test the independence of taxon co-occurrences of rock-dwelling gastropods at different taxonomic levels, with a special focus on the Clausiliidae subfamily Alopiinae, and in particular the genus Montenegrina.LocationBalkan Peninsula in south-eastern Europe (46N–36N, 13.5E–28E).MethodsWe introduced a taxon-specific metric that characterizes the occurrence probability at a given location. This probability was calculated as a distance-weighted mean of the taxon’s presence and absence records at all sites. We applied corrections to account for the biases introduced by varying sampling intensity in our dataset. Then we used probabilistic null-models to simulate taxon distributions under the null hypothesis of no taxon interactions and calculated pairwise and cumulated co-occurrences. Independence of taxon occurrences was tested by comparing observed co-occurrences to simulated values.ResultsWe observed significantly fewer co-occurrences among species and intra-generic lineages of Montenegrina than expected under the assumption of no taxon interaction.Main conclusionsFewer than expected co-occurrences among species and intrageneric clades indicate that species divergence preceded niche partitioning. This suggests a primary role of non-adaptive processes in the speciation of rock-dwelling gastropods. The method can account for the effects of distributional constraints in range-wide datasets, making it suitable for testing ecological, biogeographical, or evolutionary hypotheses where interactions of partly allopatric taxa are in question.

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Widespread polyphyly among Alopiinae snail genera: when phylogeny mirrors biogeography more closely than morphology

Cited by 52 publications

References 28 publications

Evolutionary pattern and process within the Vertigo gouldii (Mollusca: Pulmonata, Pupillidae) group of minute North American land snails

Evolutionary pattern and process within the Vertigo gouldii (Mollusca: Pulmonata, Pupillidae) group of minute North American land snails

Molecular phylogeny, taxonomy and evolution of the land snail genusIberus(Pulmonata: Helicidae)

Range‐constrained co‐occurrence simulation reveals little niche partitioning among rock‐dwelling Montenegrina land snails (Gastropoda: Clausiliidae)

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