The Molluscan Taxa of A. W. Grabau &amp; S. G. King (1928) and Their Types

Coan, Eugene V.; Lutaenko, Konstantin A.; Zhang, Junlong; Sun, Qi

doi:10.4002/040.058.0206

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…This species is distinguished from the above two species by a very weak sculpturing on the spiral ribs and greenish colour. M. trochiformis (Grabau & S. G. King, 1928): This species has been treated as a junior synonym of M. labio , but it had not been studied seriously until re-illustration by Coan et al . (2015: figure 3). The type locality is Peitaiho, northern China.…”

Section: Discussionmentioning

confidence: 99%

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Shell variations in the gastropod,Monodonta labio, in the North-western Pacific: the important role of temperature in the evolution process

et al. 2019

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Molluscan shells showing phenotypic variations are ideal models for studying evolution and plasticity. In north-eastern Asia, genetic and morphological diversity of the gastropod, Monodonta labio, were assumed to be influenced by both palaeoclimatic changes and current ecological factors. In this study, we examined spatial variations in shell shape of M. labio using general measurement and geometric morphometric analysis. We also investigated whether shell shape variation is best explained by environmental gradients or by genetic structuring, based on our prior molecular phylogeographic study. Two common morphological forms were observed among Chinese populations and in the adjacent Asian areas. Both the analyses revealed separation patterns in morphological variations of shell shape among the clades and populations. Environmental modelling analysis showed a significant correlation between shape variations and local maximum temperatures of the warmest month, indicating the role of natural selection in the evolution of this species. Data obtained in this study, combined with the cytochrome oxidase subunit I (COI) molecular phylogenetic data from the prior study, showed that morphological variations in M. labio were constrained by both local adaptation and phenotypic plasticity. We hypothesized that geographic separation by the Dongshan Landbridge was the first step towards its diversification, and that the temperature gradient between the East China Sea and South China Sea probably was the selective force driving the divergence of its morphological variations.

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Section: Discussionmentioning

confidence: 99%

“…Based on our current interpretation, these two forms are separable and they cannot be synonymized in agreement with Coan et al . (2015). The taxonomic treatment of the entire M. labio species group, however, requires a more detailed scrutiny of molecular and morphological characters of the extensive Indo-Pacific populations.…”

Section: Discussionmentioning

confidence: 99%

Shell variations in the gastropod,Monodonta labio, in the North-western Pacific: the important role of temperature in the evolution process

et al. 2019

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“…Holotype of Vermetus eburneus, NHMUK 1950.11.28.31. Holotype of Vermetus fewkesi is lost, but a photograph of the type was reproduced by Coan & Scott (1990). "Syntypes" of Vermiculus lumbricalis var.…”

Section: Family Turritellidae Lovén 1847mentioning

confidence: 99%

Phylogeny and Systematics of Fossil and Recent Vermicularia (Caenogastropoda: Turritellidae)

Anderson,

Allmon

2024

Malacologia

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“…This bending behavior, the “collective effect”, depends on the tooth geometry and the arrangement of teeth on the membrane, the hydration state, the mechanical properties of the teeth and of the membrane. [ 10,15–27 ]…”

Section: Introductionmentioning

confidence: 99%

“…This bending behavior, the "collective effect", depends on the tooth geometry and the arrangement of teeth on the membrane, the hydration state, the mechanical properties of the teeth and of the membrane. [10,[15][16][17][18][19][20][21][22][23][24][25][26][27] The interaction between the teeth is probably also enforced by the specific radular kinematics. Even though much is known about the radula, the detailed feeding motions and the interaction of teeth with the ingesta remain mostly enigmatic.…”

Section: Introductionmentioning

confidence: 99%

Dynamical Numerical Model of the Molluscan Radula in its Interaction with the Substrate and Food Particles

Filippov

Gorb

Kovalev

et al. 2023

Advcd Theory and Sims

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The radula, a chitinous membrane with teeth, is the molluscan autapomorphy for food gathering and processing. Even though this structure is studied for decades, the interplay between the structure and the particular food or/and the substrate remains mostly enigmatic. Here, we provide a numerical model approach to understand the relationship between structure, feeding efficiency, and partial work performed by the system. This first simple dynamic numerical radular model interacts with the food particles and the uneven substrate. This protocol can be applied to any system in the future, as the parameters (interaction between structures, adhesion, size of food particles, attachment angle of teeth to membrane, etc.) can be easily altered. This will shed light on the biomechanical adaptations of this feeding structure (e.g., wear and failure prevention) to the specific environment.

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The Molluscan Taxa of A. W. Grabau & S. G. King (1928) and Their Types

Cited by 6 publications

References 10 publications

Shell variations in the gastropod,Monodonta labio, in the North-western Pacific: the important role of temperature in the evolution process

Shell variations in the gastropod,Monodonta labio, in the North-western Pacific: the important role of temperature in the evolution process

Phylogeny and Systematics of Fossil and Recent Vermicularia (Caenogastropoda: Turritellidae)

Dynamical Numerical Model of the Molluscan Radula in its Interaction with the Substrate and Food Particles

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