Salinity-dependent impacts on the effects of antiepileptic and antihistaminic drugs in Ruditapes philippinarum

2022 ◽  
Vol 806 ◽  
pp. 150369
Author(s):  
Ângela Almeida ◽  
Vânia Calisto ◽  
Valdemar I. Esteves ◽  
Rudolf J. Schneider ◽  
Amadeu M.V.M. Soares ◽  
...  
Keyword(s):  
Ruditapes Philippinarum ◽  
Antihistaminic Drugs

Production of asari (Manila) clams, Ruditapes philippinarum, during the period of harvest decrease in the 2000s in the Banzu tidal area, Tokyo Bay

2020 ◽  
Vol 33 ◽  
pp. 14
Author(s):  
Mitsuharu Toba ◽  
Jun Kakino ◽  
Kazuo Tada ◽  
Yutaka Kobayashi ◽  
Hideharu Tsuchie
Keyword(s):  
Field Investigation ◽  
Ruditapes Philippinarum ◽  
Management Style ◽  
Seed Stock ◽  
Tokyo Bay ◽  
Yearly Variation ◽  
Culture Area ◽  
Stock Biomass ◽  
Tidal Area ◽  
High Level

In Tokyo Bay, the harvestable quantity of asari (Manila) clams Ruditapes philippinarum has been decreasing since the late 1990s. We conducted a field investigation on clam density in the Banzu culture area from April 1988 to December 2014 and collected records spanning January 1986 to September 2017 from relevant fisheries cooperative associations to clarify the relationship between the temporal variation in stock abundance and the production activities of fishermen. The yearly variation in clam abundance over the study period was marked by larger decreases in the numbers of larger clams. A large quantity of juvenile clams, beyond the biological productivity of the culture area, may have been introduced as seed stock in the late 1980s despite the high level of harvestable stock. The declines in harvested quantity began in the late 1990s and may have been caused by decreases in harvestable stock despite the continuous addition of seed stock clams. The harvested quantity is likely to be significantly dependent upon the wild clam population, even within the culture area, as the harvestable quantity was not correlated with the quantity of seed stock introduced during the study period. These declines in harvested quantity may have resulted from a decreasing number of operating harvesters due to the low level of harvestable stock and consequently reduced profitability. Two findings were emphasized. A certain management style, based on predictions of the contributions of wild and introduced clams to future stock biomass, is essential for economically-feasible culturing. In areas with less harvestable stock, actions should be taken to maintain the incomes of harvesters while avoiding overexploitation, even if the total harvest quantity decreases.

Double-Blind Study of Antihistaminic Drugs

1973 ◽  
Vol 35 (5) ◽  
pp. 627-633
Author(s):  
Masayuki SHIMIZU ◽  
Yoshiko HIDAKA ◽  
Ryuhji TAKEUCHI
Keyword(s):  
Blind Study ◽  
Double Blind Study ◽  
Double Blind ◽  
Antihistaminic Drugs

TRANSFER EFFICIENCY FROM PRIMARY PRODUCERS TO RUDITAPES PHILIPPINARUM ON AN INTERTIDAL FLAT IN HIROSHIMA BAY, JAPAN

2017 ◽  
Author(s):  
Sosuke Otani ◽  
Sosuke Otani ◽  
Akira Umehara ◽  
Akira Umehara ◽  
Haruka Miyagawa ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Secondary Production ◽  
Isotope Ratios ◽  
Ruditapes Philippinarum ◽  
Transfer Efficiency ◽  
Food Sources ◽  
Stable Isotope Ratios ◽  
Primary Producers ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen

Fish yields of Ruditapes philippinarum have been decreased and the resources have not yet recovered. It needs to clarify food sources of R. philippinarum, and relationship between primary and secondary production of it. The purpose on this study is to reveal transfer efficiency from primary producers to R. philippinarum and food sources of R. philippinarum. The field investigation was carried out to quantify biomass of R. philippinarum and primary producers on intertidal sand flat at Zigozen beach in Hiroshima Bay, Japan. In particular, photosynthetic rates of primary producers such as Zostera marina, Ulva sp. and microphytobenthos were determined in laboratory experiments. The carbon and nitrogen stable isotope ratios for R. philippinarum and 8 potential food sources (microphytobenthos, MPOM etc) growing in the tidal flat were also measured. In summer 2015, the primary productions of Z. marina, Ulva sp. and microphytobenthos were estimated to be 70.4 kgC/day, 43.4 kgC/day and 2.2 kgC/day, respectively. Secondary production of R. philippinarum was 0.4 kgC/day. Contribution of microphytobenthos to R. philippinarum as food source was 56-76% on the basis of those carbon and nitrogen stable isotope ratios. Transfer efficiency from microphytobenthos to R. philippinarum was estimated to be 10-14%. It was suggested that microphytobenthos might sustain the high secondary production of R. philippinarum, though the primary production of microphytobenthos was about 1/10 compared to other algae.

Three way crosses between two-band red and white zebra strains of Manila clam, Ruditapes philippinarum

2011 ◽  
Vol 34 (8) ◽  
pp. 1190-1197
Author(s):  
Xi-wu YAN ◽  
Yue-huan ZHANG ◽  
Huan-qiang SUN ◽  
Zhong-ming HUO ◽  
Xin SUN ◽  
...  
Keyword(s):  
Ruditapes Philippinarum ◽  
Manila Clam

scholarly journals Survey on Perkinsus Species in Manila Clam Ruditapes philippinarum in Korean Waters Using Species-Specific PCR

2017 ◽  
Vol 52 (4) ◽  
pp. 202-205 ◽  
Author(s):  
Hyun-Sil Kang ◽  
Hyun-Sung Yang ◽  
Kimberly S. Reece ◽  
Young-Ghan Cho ◽  
Hye-Mi Lee ◽  
...  
Keyword(s):  
Ruditapes Philippinarum ◽  
Manila Clam ◽  
Korean Waters ◽  
Specific Pcr ◽  
Species Specific

Characterization of the SIRT genes and their distinct expression patterns in Manila clams (Ruditapes philippinarum) exposed to air

Meta Gene ◽  
2021 ◽  
Vol 28 ◽  
pp. 100892
Author(s):  
Jingtian Wang ◽  
He Zhang ◽  
Shuang Xu ◽  
Ze Liu ◽  
Lu Yang ◽  
...  
Keyword(s):  
Expression Patterns ◽  
Ruditapes Philippinarum

scholarly journals Dissecting the chromosome-level genome of the Asian Clam (Corbicula fluminea)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tongqing Zhang ◽  
Jiawen Yin ◽  
Shengkai Tang ◽  
Daming Li ◽  
Xiankun Gu ◽  
...  
Keyword(s):  
De Novo ◽  
Corbicula Fluminea ◽  
Gene Families ◽  
Ruditapes Philippinarum ◽  
Genomic Sequences ◽  
Future Research ◽  
Asian Clam ◽  
Sequencing Technologies ◽  
East And Southeast Asia ◽  
Clam Corbicula

AbstractThe Asian Clam (Corbicula fluminea) is a valuable commercial and medicinal bivalve, which is widely distributed in East and Southeast Asia. As a natural nutrient source, the clam is rich in protein, amino acids, and microelements. The genome of C. fluminea has not yet been characterized; therefore, genome-assisted breeding and improvements cannot yet be implemented. In this work, we present a de novo chromosome-scale genome assembly of C. fluminea using PacBio and Hi-C sequencing technologies. The assembled genome comprised 4728 contigs, with a contig N50 of 521.06 Kb, and 1,215 scaffolds with a scaffold N50 of 70.62 Mb. More than 1.51 Gb (99.17%) of genomic sequences were anchored to 18 chromosomes, of which 1.40 Gb (92.81%) of genomic sequences were ordered and oriented. The genome contains 38,841 coding genes, 32,591 (83.91%) of which were annotated in at least one functional database. Compared with related species, C. fluminea had 851 expanded gene families and 191 contracted gene families. The phylogenetic tree showed that C. fluminea diverged from Ruditapes philippinarum, ~ 228.89 million years ago (Mya), and the genomes of C. fluminea and R. philippinarum shared 244 syntenic blocks. Additionally, we identified 2 MITF members and 99 NLRP members in C. fluminea genome. The high-quality and chromosomal Asian Clam genome will be a valuable resource for a range of development and breeding studies of C. fluminea in future research.

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