Additional gene data and increased sampling give new insights into the phylogenetic relationships of Neogastropoda, within the caenogastropod phylogenetic framework

Zou, Shanmei; Li, Qi; Kong, Lingfeng

doi:10.1016/j.ympev.2011.07.014

Cited by 60 publications

(57 citation statements)

References 33 publications

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“…The relationships we can test are largely in agreement with prior morphological [10,[55][56][57] and molecular [58][59][60] analyses. We find a sister group relationship of Ampullarioidea (represented by Pomacea) to Sorbeoconcha, which comprise the remaining sampled caenogastropods (figure 3a).…”

Section: (B) Relationships Within Major Gastropod Cladessupporting

confidence: 82%

Phylogenomic analyses of deep gastropod relationships reject Orthogastropoda

et al. 2014

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Gastropods are a highly diverse clade of molluscs that includes many familiar animals, such as limpets, snails, slugs and sea slugs. It is one of the most abundant groups of animals in the sea and the only molluscan lineage that has successfully colonized land. Yet the relationships among and within its constituent clades have remained in flux for over a century of morphological, anatomical and molecular study. Here, we re-evaluate gastropod phylogenetic relationships by collecting new transcriptome data for 40 species and analysing them in combination with publicly available genomes and transcriptomes. Our datasets include all five main gastropod clades: Patellogastropoda, Vetigastropoda, Neritimorpha, Caenogastropoda and Heterobranchia. We use two different methods to assign orthology, subsample each of these matrices into three increasingly dense subsets, and analyse all six of these supermatrices with two different models of molecular evolution. All 12 analyses yield the same unrooted network connecting the five major gastropod lineages. This reduces deep gastropod phylogeny to three alternative rooting hypotheses. These results reject the prevalent hypothesis of gastropod phylogeny, Orthogastropoda. Our dated tree is congruent with a possible end-Permian recovery of some gastropod clades, namely Caenogastropoda and some Heterobranchia subclades.

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Section: (B) Relationships Within Major Gastropod Cladessupporting

confidence: 82%

Phylogenomic analyses of deep gastropod relationships reject Orthogastropoda

et al. 2014

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“…The tree used in this paper was created based on expert opinion to merge and expand existing molecular and morphological phylogenies (Nützel, 1998;Colgan et al, 2007;Ponder & Lindberg, 2008;Barco et al, 2010Barco et al, , 2015Oliverio & Modica, 2010;Aktipis & Giribet, 2011;Dayrat et al, 2011;Puillandre et al, 2011;Simone, 2011;Strong et al, 2011;Zou, Li & Kong, 2011;Takano & Kano, 2014;Galindo et al, 2016), as a comprehensive gastropod phylogeny with sufficient resolution or sufficient varicate taxa is not yet available. Taxa were included either due to the presence of varices or as large or important avaricate groups to show where varices are absent.…”

Section: Methodsmentioning

confidence: 99%

The varix: evolution, distribution, and phylogenetic clumping of a repeated gastropod innovation

Webster

Vermeij

2017

Zoological Journal of the Linnean Society

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A recurrent theme in evolution is the repeated, independent origin of broadly adaptive, architecturally and functionally similar traits and structures. One such is the varix, a shell-sculpture innovation in gastropods. This periodic shell thickening functions mainly to defend the animal against shell crushing and peeling predators. Varices can be highly elaborate, forming broad wings or spines, and are often aligned in synchronous patterns. Here we define the different types of varices, explore their function and morphological variation, document the recent and fossil distribution of varicate taxa, and discuss emergent patterns of evolution. We conservatively found 41 separate origins of varices, which were concentrated in the more derived gastropod clades and generally arose since the mid-Mesozoic. Varices are more prevalent among marine, warm, and shallow waters, where predation is intense, on high-spired shells and in clades with collabral ribs. Diversification rates were correlated in a few cases with the presence of varices, especially in the Muricidae and Tonnoidea, but more than half of the origins are represented by three or fewer genera. Varices arose many times in many forms, but generally in a phylogenetically clumped manner (more frequently in particular higher taxa), a pattern common to many adaptations.ADDITIONAL KEYWORDS: evolutionary trends -fossil record -Gastropoda -shell sculpture -snails.

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“…All these analyses failed to recover Buccinidae as monophyletic due to the intercalation of Nassariidae and/or Fasciolariidae. There are no phylogenetic hypotheses that deal specifically with the family Fasciolariidae, based either on morphological or molecular characters, and the studies that do include some fasciolariid species (e.g., Hayashi, 2005;Kosyan et al, 2009;Zou et al, 2011) lack the resolution and coverage to clarify its relationships or to test its monophyly, as the family may potentially comprise multiple paraphyletic groups (Fedosov and Kantor, 2012).…”

Section: Introductionmentioning

confidence: 99%