The Whole-Genome and Transcriptome of the Manila Clam (Ruditapes philippinarum)

The manila clam, Ruditapes philippinarum, is an important bivalve species in worldwide aquaculture including Korea. The aquaculture production of R. philippinarum is under threat from diverse environmental factors including viruses, microorganisms, parasites, and water conditions with subsequently declining production. In spite of its importance as a marine resource, the reference genome of R. philippinarum for … Continue reading The Whole-Genome and Transcriptome of the Manila Clam (Ruditapes philippinarum)

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Integrating the Vibrio-resistance phenotype and gene expression data for discovery of markers used for resistance evaluation in the clam Meretrix petechialis

In this study, gene expression data were used to select resistance-associated markers that indicate resistance phenotypes in the clam Meretrix petechialis. A total of 1772 clams from 23 full-sibling families were subjected to a Vibrio challenge test, and the results showed significant variation in resistance to vibriosis among different families. Three of the most resistant … Continue reading Integrating the Vibrio-resistance phenotype and gene expression data for discovery of markers used for resistance evaluation in the clam Meretrix petechialis

Laboratory simulation reveals significant impacts of ocean acidification on microbial community composition and host-pathogen interactions between the blood clam and Vibrio harveyi

It has been suggested that climate change may promote the outbreaks of diseases in the sea through altering the host susceptibility, the pathogen virulence, and the host-pathogen interaction. However, the impacts of ocean acidification (OA) on the pathogen components of bacterial community and the host-pathogen interaction of marine bivalves are still poorly understood. Therefore, 16S … Continue reading Laboratory simulation reveals significant impacts of ocean acidification on microbial community composition and host-pathogen interactions between the blood clam and Vibrio harveyi

Mining and identification of SNP markers associated with growth traits in the clam Meretrix meretrix

Selecting fast-growing strains is the most common objective of genetic breeding programs. In this study, we sought to mine the growth-associated single nucleotide polymorphisms (SNPs) in the commercially cultured clam Meretrix meretrix by candidate gene association analysis. Fifty potentially growth-associated contigs based on their functional annotation were chosen as candidates from our EST database, and … Continue reading Mining and identification of SNP markers associated with growth traits in the clam Meretrix meretrix

Ancient DNA analysis identifies marine mollusc shells as new metagenomic archives of the past

Marine mollusc shells enclose a wealth of information on coastal organisms and their environment. Their life history traits as well as (palaeo-) environmental conditions, including temperature, food availability, salinity and pollution, can be traced through the analysis of their shell (micro-) structure and biogeochemical composition. Adding to this list, the DNA entrapped in shell carbonate … Continue reading Ancient DNA analysis identifies marine mollusc shells as new metagenomic archives of the past

Mass Mortalities Affecting Populations of the Yellow Clam Amarilladesma mactroides Along Its Geographic Range

The yellow clam Amarilladesma mactroides (Deshayes, 1854) is considered a vulnerable species since the mid-1990s. Populations have experienced mass mortalities throughout their entire range of distribution (23–41°S) along exposed sandy beaches of Atlantic South America. Detrimental anthropogenic impacts have further contributed to failure of populations to make a recovery. To determine the factors involved in … Continue reading Mass Mortalities Affecting Populations of the Yellow Clam Amarilladesma mactroides Along Its Geographic Range

Molecular characterization and antibacterial activity of a phage-type lysozyme from the Manila clam, Ruditapes philippinarum

A phage-type lysozyme, designed as RpPLYZ, was cloned and characterized from the clam Ruditapes philippinarum. The full-length cDNA of RpPLYZ was of 699 bp with an open reading frame (ORF) of 534 bp, encoding a polypeptide of 177-amino acid with a calculated molecular mass of 19.6 kDa and an isoelectric point of 9.05. Multiple alignments and … Continue reading Molecular characterization and antibacterial activity of a phage-type lysozyme from the Manila clam, Ruditapes philippinarum