Genetic diversification of intertidal gastropoda in an archipelago: the effects of islands, oceanic currents, and ecology

Yamazaki, Daishi; Miura, Osamu; Ikeda, Mitsuru; Kijima, Akihiro; Tu, Do Van; Sasaki, Tetsuro; Chiba, Satoshi

doi:10.1007/s00227-017-3207-9

Cited by 24 publications

(39 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, S. pusilla used other intertidal snails such as Tegulidae and Muricidae. Among tegulid species, Tegula xanthostigma lives in an exposed shore while its sister species, Tegula sp., prefers sheltered habitats, like the inner bay (Yamazaki et al, 2019). This suggests that S. pusilla can live in a wide range of coastal exposures due to the utilization of various snails.…”

Section: Discussionmentioning

confidence: 99%

“…Also, high genetic diversity within populations is found in S. pusilla . However, some marine species such as fish and intertidal snails along the Japanese coast are genetically differentiated in accordance with geographic structure, such as splitting oceanic currents (fish: Hirase et al ., 2012; snails: Kojima et al ., 1997; Yamazaki et al ., 2017). In the case of S. pusilla , the low level of genetic differentiation indicates that it possesses sufficient dispersal ability to maintain the opportunities of gene flow among populations (7 days of planktonic larval duration: Deguchi et al ., 2009).…”

Section: Discussionmentioning

confidence: 99%

“…The snails used by S. pusilla are known to exhibit a variety of habitat preferences. For instance, M. confusa , the main available snail for S. pusilla , can inhabit wider coastal environments compared with other congeneric species (Takenouchi, 1985; Yamazaki et al ., 2017). Besides, S. pusilla used other intertidal snails such as Tegulidae and Muricidae.…”

Section: Discussionmentioning

confidence: 99%

“…Also, we surveyed the intertidal snail species used by S. pusilla. The reason is that although Fujiwara et al (2014) studied the preference of S. pusilla in Mutsu Bay, in the whole distribution area of S. pusilla it is unknown if and how S. pusilla makes use of snail species other than M. confusa; despite the distribution of snails potentially available for S. pusilla around the Japanese coastal area (Genus Monodonta and Genus Tegula: Sasaki, 2017;Yamazaki et al, 2019). Our data will help to bridge the research gap of enigmatic invertebrate taxa that are insufficiently genetically studied.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The genetic structure of the marine flatwormStylochoplana pusilla(Rhabditophora: Polycladida) and its use of intertidal snails

2020

Self Cite

View full text Add to dashboard Cite

Although marine phylogeographers have accumulated knowledge of the evolutionary history of various invertebrates, there is a large bias among the taxa regarding genetic data. The order Polycladida is a typical example for which little genetic information at population level is available. Here, we focused on the polyclad flatworm Stylochoplana pusilla, distributed in the Japanese Pacific coastal area. Stylochoplana pusilla is known to have commensal relationships with certain intertidal snails, using snails (mainly Monodonta confusa) as a refugee house. During low tide, S. pusilla hides in the mantle cavity of snails to protect themselves from desiccation and predation. Here, we investigated the genetic structure of S. pusilla using a mitochondrial Cytochrome Oxidase I marker and the species diversity of snails used by it. We found that S. pusilla has high genetic diversity of its populations. While S. pusilla showed a significant genetic differentiation among populations, it was relatively low. In addition, we also showed that S. pusilla used several intertidal snail species which inhabit various coastal environments. The present study suggests S. pusilla has sufficient dispersal ability to connect among its local populations. Also, the range of available snails for S. pusilla may help the connectivity among local populations. We provide important knowledge about this invertebrate taxon with a unique ecology, which has been insufficiently studied.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The genetic structure of the marine flatwormStylochoplana pusilla(Rhabditophora: Polycladida) and its use of intertidal snails

2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Monodonta labio and closely related species (see below) are widely distributed in the Indo-West Pacific. Although its taxonomy has been established and stabilized for a long time, the results of recent studies (Yamazaki et al ., 2017; Zhao et al ., 2017) and this study suggest that M. labio diversified regionally both in genetic and phenotypic traits. Among the eight valid species or subspecies recognized in Asian Monodonta , at least the following four names are most directly relevant to the populations studied (Higo et al ., 1999).…”

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

View full text Add to dashboard Cite

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.

show abstract

The cosmopolitan appendicularian Oikopleura dioica reveals hidden genetic diversity around the globe

et al. 2022

View full text Add to dashboard Cite

Appendicularian tunicates are some of the most abundant mesozooplankton organisms with key roles in marine trophic webs and global carbon flux. Like most appendicularians with cosmopolitan distributions, Oikopleura dioica Fol, 1872 is considered a single species worldwide based on morphological features that distinguish them from other appendicularians. Despite their abundance, however, there are still only ~ 70 described appendicularian species, compared to over 2800 ascidian tunicates. Here we perform a molecular phylogenetic, morphological, and reproductive assessment of O. dioica specimens collected from the Ryukyu Archipelago, mainland Japan, and Europe. The specimens are morphologically very similar, with only detailed examination of the oikoplastic epithelium and quantitative measurements revealing minor distinguishing characteristics. Phylogenetic analyses of the ribosomal gene loci and mitochondrial cytochrome oxidase I (COI) gene strongly indicate that they form three separate genetic clades despite their morphological similarities. Finally, in vitro crosses between the Ryukyu and mainland Japanese specimens show total prezygotic reproductive isolation. Our results reveal that the current taxonomic O. dioica classification likely hides multiple cryptic species, highlighting the genetic diversity and complexity of their population structures. Cryptic organisms are often hidden under a single species name because their morphological similarities make them difficult to distinguish and their correct identification is fundamental to understanding Earth’s biodiversity. O. dioica is an attractive model to understand how morphological conservation can be maintained despite pronounced genetic divergence.

show abstract

Genetic diversification of intertidal gastropoda in an archipelago: the effects of islands, oceanic currents, and ecology

Cited by 24 publications

References 48 publications

The genetic structure of the marine flatwormStylochoplana pusilla(Rhabditophora: Polycladida) and its use of intertidal snails

The genetic structure of the marine flatwormStylochoplana pusilla(Rhabditophora: Polycladida) and its use of intertidal snails

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

The cosmopolitan appendicularian Oikopleura dioica reveals hidden genetic diversity around the globe

Contact Info

Product

Resources

About