Genetic Evolution of Marine Shellfish (Volume II)

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Animal Genetics and Genomics".

Deadline for manuscript submissions: 25 November 2024 | Viewed by 647

Special Issue Editor


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Guest Editor
Department of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Interests: Mollusca; phylogeny; evolution; genetic diversity; taxonomy
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Special Issue Information

Dear Colleagues,

Mollusca is the second largest phylum in the animal kingdom following Arthropoda. Around 85,000 extant species are recognized, and this group could contain up to 200,000, comprising almost a quarter of all named marine organisms. Most of the species that have ever lived vanished in ancient history, since mollusks first appeared in the early Cambrian, leaving only 35,000 known fossil species. Global environmental changes and geological events continue to drive biological evolution, altering the biodiversity of Mollusca and genetic information of taxa. To better explain the relationships within Mollusca, massive phylogenetic hypotheses have been raised, with data continuously enriched by morphological, ultrastructural, molecular, developmental, and fossil records.

This Special Issue aims to present new original articles in taxonomy and phylogeny, biodiversity, genetic diversity, and the evolutionary characteristics and mechanisms of marine shellfish with respect to genes, genetics, and genomics. Additionally, review articles that cover the latest studies on the genetic evolution of marine shellfish are welcome.

Dr. Haiyan Wang
Guest Editor

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Keywords

  • phylogeny
  • taxonomy
  • biodiversity
  • genetic diversity
  • genomics
  • evolution
  • Mollusca

Published Papers (1 paper)

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Research

20 pages, 13287 KiB  
Article
Morphological and Molecular Analysis Identified a Subspecies of Crassostrea ariakensis (Fujita, 1913) along the Coast of Asia
by Ya Chen, Cui Li, Ruijing Lu and Haiyan Wang
Genes 2024, 15(5), 644; https://doi.org/10.3390/genes15050644 - 19 May 2024
Cited by 1 | Viewed by 508
Abstract
Crassostrea ariakensis (Fujita, 1913) is one of the most important economic and ecological oysters that is naturally distributed along the coast of Asia, separated by the Yangtze River estuary. They are usually compared as different populations, while there is no consensus on whether [...] Read more.
Crassostrea ariakensis (Fujita, 1913) is one of the most important economic and ecological oysters that is naturally distributed along the coast of Asia, separated by the Yangtze River estuary. They are usually compared as different populations, while there is no consensus on whether C. ariakensis in northern and southern areas should be considered as two species or subspecies. Here, we analyzed morphological characteristics, COI, 16s rRNA, mitogenome sequences, and species delimitation analysis (ASAP and PTP) to resolve the intraspecific taxonomic status of the C. ariakensis. Phylogenetic and ASAP analysis highlight that C. ariakensis was divided into N-type and S-type. PTP was unable to differentiate between the two types of C. ariakensis. The divergence time of N-type and S-type C. ariakinsis is estimated to be 1.6 Mya, using the relaxed uncorrelated lognormal clock method. Additionally, significant morphological differences exist between the two groups in terms of the adductor muscle scar color. Despite these differences, the COI (0.6%) and 16S rRNA (0.6%) genetic distance differences between N-type and S-type C. ariakensis has not yet reached the interspecific level. These results suggest that N-type and S-type C. ariakensis should be treated as different subspecies and renamed as C. ariakensis ariakensis subsp. nov and C. ariakensis meridioyangtzensis subsp. nov. Full article
(This article belongs to the Special Issue Genetic Evolution of Marine Shellfish (Volume II))
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