is a bivalve inhabiting coastal seafloors and has long been commercially harvested as a fishery resource. In Ariake Bay, a major production area for in Japan, the catch has significantly declined due to marine environmental degradation, including seasonal oxygen depletion in bottom waters. This article presents the transcriptome dataset of gill tissues from under anoxic and normoxic conditions.
View Article and Find Full Text PDFCoastal hypoxia is an increasing environmental concern affecting marine ecosystems globally, particularly impacting benthic organisms such as bivalves. Although previous studies focused on the physiological responses of bivalves to hypoxic stress, the role of resident bacteria in the host response to hypoxia remains poorly understood. This study investigated changes in the resident bacterial communities in the gills and hepatopancreatic tissues of the ark shell (Anadara kagoshimensis) under hypoxic conditions.
View Article and Find Full Text PDFBivalves survive exposure to hypoxic water through anaerobic metabolism. However, the characteristics of anaerobic metabolism that determine the differences in hypoxic tolerance observed between and within species remain unclear. In this study, we examined three species belonging to the superfamily Arcoidea (Anadara kagoshimensis, Tegillarca granosa, and Estellacar olivacea) with differences in hypoxia tolerance as well as one species (A.
View Article and Find Full Text PDFEstuarine microbial assemblages are altered by a number of environmental factors, and knowledge of these changes is essential for understanding the functions of microbes in estuarine ecosystems. The aims of the present study were to examine the relationship between microbial assemblages in the water column and sediment surface, and to identify the environmental factors that influence the short-term dynamics of microbial assemblages in these two zones in summer in the inner part of Ariake Bay. The microbial assemblage of each sample consisted of a mean of 71.
View Article and Find Full Text PDFScreening for new sake yeasts can expand the sensory diversity of sake, due to their production of metabolites that characterize sake's aroma and taste. In this study, mud from tidal flats in the Ariake Sea was screened for Saccharomyces cerevisiae strains with ethanol productivity suitable for sake brewing, and the brewing characteristics of isolated strains were evaluated. Five strains (H1-1, H1-2, H1-3, H3-1, and H3-2) classified as S.
View Article and Find Full Text PDFSake yeast is one of the important factors that characterize the aroma and taste of sake. To obtain sake yeast strains with different metabolic capabilities from other strains, breeding of a sake yeast is an effective way. In this study, sake yeast strain Y5201 was mutagenized by synchrotron light irradiation to obtain the mutant strains showing different brewing characteristics from parental strain Y5201, and comparative genome analysis between strain Y5201 and mutant strains was performed to identify mutation points and patterns induced by synchrotron light irradiation.
View Article and Find Full Text PDFThe razor clam Sinonovacula constricta is a commercially important bivalve in Japan. The current distribution of this species in Japan is limited to Ariake Bay, where the fishery stock is declining. It is necessary to understand the genetic population structure of this species in order to restore the fishery stock while preserving the genetic diversity of the clam.
View Article and Find Full Text PDFFreshwater cyanobacteria produce toxic microcystins (MCs), which travel from freshwater areas into the sea. The MCs produced by cyanobacteria in a freshwater reservoir were discharged frequently into the adjacent Isahaya Bay, remained in the surface sediments, and then accumulated in various macrobenthic animals on the seafloor. The MCs were transported further outside of Isahaya Bay (Ariake Bay), and the median values of the MC contents in the sediments were in the same levels in both bays, while their temporal variations were also similar during the study period.
View Article and Find Full Text PDFFreshwater cyanobacteria produce highly toxic substances such as microcystins (MCs), and water containing MCs is often discharged to downstream and coastal areas. We conducted field monitoring in Isahaya Bay to clarify the short-term dynamics of MCs discharged from a reservoir following a cyanobacteria bloom in the warm season. MCs were detected in the seawater of the bay (max.
View Article and Find Full Text PDFTwo experiments tested a total of 509 participants on insight problems (the radiation problem and the nine-dot problem). Half of the participants were first exposed to a 1-min movie that included a subliminal hint. The hint raised the solution rate of people who did not recognize it.
View Article and Find Full Text PDFShinrigaku Kenkyu
December 2010
The present research investigated the role of experienced ease of retrieval in predicting future behavior of others. People retrieve past examples of others' behavior to predict how they would behave in the future. But well-defined, high trait evaluations about others decrease the informational value of the retrieved content.
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