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https://www.readbyqxmd.com/read/28734216/releasing-of-hexabromocyclododecanes-from-expanded-polystyrenes-in-seawater-field-and-laboratory-experiments
#1
Manviri Rani, Won Joon Shim, Mi Jang, Gi Myung Han, Sang Hee Hong
Expanded polystyrene (EPS) is a major component of marine debris globally. Recently, hazardous hexabromocyclododecanes (HBCDDs) were detected in EPS buoys used for aquaculture farming. Subsequently, enrichment of HBCDDs was found in nearby marine sediments and mussels growing on EPS buoys. It was suspected that EPS buoys and their debris might be sources of HBCDDs. To confirm this, the release of HBCDDs from EPS spherules detached from a buoy to seawater was investigated under field (open sea surface and closed outdoor chambers with sun exposure and in the dark) and laboratory (particle-size) conditions...
July 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28733786/developing-an-environmental-water-quality-monitoring-program-for-haraz-river-in-northern-iran
#2
Mitra Tavakol, Reza Arjmandi, Mansoureh Shayeghi, Seyed Masoud Monavari, Abdolreza Karbassi
Water quality management plans are an indispensable strategy for conservation and utilization of water resources in a sustainable manner. One common industrial use of water is aquaculture. The present study is an attempt to use statistical analyses in order to prepare an environmental water quality monitoring program for Haraz River, in Northern Iran. For this purpose, the analysis of a total number of 18 physicochemical parameters was performed at 15 stations during a 1-year sampling period. According to the results of the multivariate statistical methods, the optimal monitoring would be possible by only 3 stations and 12 parameters, including NH3, EC, BOD, TSS, DO, PO4, NO3, TDS, temperature, turbidity, coliform, and discharge...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28730805/integrating-discovery-driven-proteomics-and-selected-reaction-monitoring-to-develop-a-non-invasive-assay-for-geoduck-reproductive-maturation
#3
Emma B Timmins-Schiffman, Grace A Crandall, Brent Vadopalas, Michael E Riffle, Brook L Nunn, Steven Roberts
Geoduck clams (Panopea generosa) are an increasingly important fishery and aquaculture product along the eastern Pacific coast from Baja California, Mexico to Alaska. These long-lived clams are highly fecund, though sustainable hatchery production of genetically diverse larvae is hindered by the lack of sexual dimorphism, resulting in asynchronous spawning of broodstock, unequal sex ratios, and low numbers of breeders. Development of assays of gonad physiology could indicate sex and maturation stage, as well as be used to assess the status of natural populations...
July 21, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28730739/effect-of-the-age-of-broodstock-males-on-sperm-function-during-cold-storage-in-the-trout-oncorhynchus-mykiss
#4
J Risopatrón, O Merino, C Cheuquemán, E Figueroa, R Sánchez, J G Farías, I Valdebenito
The knowledge of sperm quality in the broodstock males of different ages is a prerequisite to identify the reproductive ability of cultivated fish for the hatchery management. Thus, in this work, we analysed sperm function of the semen stored of broodstock males of rainbow trout (Oncorhychus mykiss) in different reproductive ages (2, 3 and 4 years old). Sperm samples of each reproductive age were stored in Storfish(®) during 10 days at 4°C, and then, motility, viability, mitochondrial function (MMP), superoxide anion (O2-) level and DNA fragmentation (DNAfrag ) were assessed...
July 21, 2017: Andrologia
https://www.readbyqxmd.com/read/28729611/cryptic-speciation-in-pan-tropical-sea-urchins-a-case-study-of-an-edge-of-range-population-of-tripneustes-from-the-kermadec-islands
#5
Omri Bronstein, Andreas Kroh, Barbara Tautscher, Libby Liggins, Elisabeth Haring
Tripneustes is one of the most abundant and ecologically significant tropical echinoids. Highly valued for its gonads, wild populations of Tripneustes are commercially exploited and cultivated stocks are a prime target for the fisheries and aquaculture industry. Here we examine Tripneustes from the Kermadec Islands, a remote chain of volcanic islands in the southwest Pacific Ocean that mark the boundary of the genus' range, by combining morphological and genetic analyses, using two mitochondrial (COI and the Control Region), and one nuclear (bindin) marker...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729261/whole-genome-sequence-of-photobacterium-damselae-subsp-piscicida-strain-91-197-isolated-from-hybrid-striped-bass-morone-sp-in-the-united-states
#6
Yuki Teru, Jun-Ichi Hikima, Tomoya Kono, Masahiro Sakai, Tomokazu Takano, John P Hawke, Haruko Takeyama, Takashi Aoki
Photobacterium damselae subsp. piscicida is a causative bacterium of fish pasteurellosis, which has caused serious economic damage to aquaculture farms worldwide. Here, the whole-genome sequence of P. damselae subsp. piscicida 91-197, isolated in the United States, suggests that this genome consists of two chromosomes and two plasmids.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28725940/construction-of-the-first-high-density-genetic-linkage-map-and-analysis-of-quantitative-trait-loci-for-growth-related-traits-in-sinonovacula-constricta
#7
Donghong Niu, Yunchao Du, Ze Wang, Shumei Xie, Haideng Nguyen, Zhiguo Dong, Heding Shen, Jiale Li
The razor clam (Sinonovacula constricta) is an important aquaculture species, for which a high-density genetic linkage map would play an important role in marker-assisted selection (MAS). In this study, we constructed a high-density genetic map and detected quantitative trait loci (QTLs) for Sinonovacula constricta with an F1 cross population by using the specific locus amplified fragment sequencing (SLAF-seq) method. A total of 315,553 SLAF markers out of 467.71 Mreads were developed. The final linkage map was composed of 7516 SLAFs (156...
July 19, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28725218/all-new-faces-of-diatoms-potential-source-of-nanomaterials-and-beyond
#8
REVIEW
Meerambika Mishra, Ananta P Arukha, Tufail Bashir, Dhananjay Yadav, G B K S Prasad
Nature's silicon marvel, the diatoms have lately astounded the scientific community with its intricate designs and lasting durability. Diatoms are a major group of phytoplanktons involved in the biogeochemical cycling of silica and are virtually inherent in every environment ranging from water to ice to soil. The usage of diatoms has proved prudently cost effective and its handling neither requires costly materials nor sophisticated instruments. Diatoms can easily be acquired from the environment, their culture requires ambient condition and does not involve any costly media or expensive instruments, besides, they can be transported in small quantities and proliferated to a desirable confluence from that scratch, thus are excellent cost effective industrial raw material...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28725198/3d-reconstruction-of-the-digestive-system-in-octopus-vulgaris-cuvier-1797-embryos-and-paralarvae-during-the-first-month-of-life
#9
Raquel Fernández-Gago, Martin Heß, Heidemarie Gensler, Francisco Rocha
Octopus vulgaris aquaculture is limited due to poor biological knowledge of the paralarval stages (e.g., digestive system functionality), their nutritional requirements (e.g., adequate live diet) and standardization of rearing techniques. These factors are important in explaining the high mortality rate observed in this developmental stage under culture conditions. For a better understanding of nutrition biology of this species, we investigated the 3D microanatomy of the digestive tract of the embryo and paralarvae during the first month of life...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28723948/integrative-functional-analyses-using-rainbow-trout-selected-for-tolerance-to-plant-diets-reveal-nutrigenomic-signatures-for-soy-utilization-without-the-concurrence-of-enteritis
#10
Jason Abernathy, Andreas Brezas, Kevin R Snekvik, Ronald W Hardy, Ken Overturf
Finding suitable alternative protein sources for diets of carnivorous fish species remains a major concern for sustainable aquaculture. Through genetic selection, we created a strain of rainbow trout that outperforms parental lines in utilizing an all-plant protein diet and does not develop enteritis in the distal intestine, as is typical with salmonids on long-term plant protein-based feeds. By incorporating this strain into functional analyses, we set out to determine which genes are critical to plant protein utilization in the absence of gut inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28721583/microbial-and-genetically-engineered-oils-as-replacements-for-fish-oil-in-aquaculture-feeds
#11
REVIEW
M Sprague, M B Betancor, D R Tocher
As the global population grows more of our fish and seafood are being farmed. Fish are the main dietary source of the omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA), eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, but these cannot be produced in sufficient quantities as are now required for human health. Farmed fish have traditionally been fed a diet consisting of fishmeal and fish oil, rich in n-3 LC-PUFA. However, the increase in global aquaculture production has resulted in these finite and limited marine ingredients being replaced with sustainable alternatives of terrestrial origin that are devoid of n-3 LC-PUFA...
July 18, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28718925/a-historical-review-of-the-key-bacterial-and-viral-pathogens-of-scottish-wild-fish
#12
REVIEW
I S Wallace, P McKay, A G Murray
Thousands of Scottish wild fish were screened for pathogens by Marine Scotland Science. A systematic review of published and unpublished data on six key pathogens (Renibacterium salmoninarum, Aeromonas salmonicida, IPNV, ISAV, SAV and VHSV) found in Scottish wild and farmed fish was undertaken. Despite many reported cases in farmed fish, there was a limited number of positive samples from Scottish wild fish, however, there was evidence for interactions between wild and farmed fish. A slightly elevated IPNV prevalence was reported in wild marine fish caught close to Atlantic salmon, Salmo salar L...
July 18, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28716629/characterization-of-novel-bacillus-strain-n31-from-mariculture-water-capable-of-halophilic-heterotrophic-nitrification-aerobic-denitrification
#13
Fei Huang, Luqing Pan, Na Lv, Xianming Tang
The development of an intensive aquaculture industry has been accompanied by increasing environmental impacts, especially nitrogen pollution. In this study, a novel halophilic bacterium capable of heterotrophic nitrification and aerobic denitrification was isolated from mariculture water and identified as Bacillus litoralis N31. The efficiency of ammonium, nitrite and nitrate removal by N31 were 86.3%, 89.3% and 89.4%, respectively, after a 48-h cultivation in sole N-source medium with initial nitrogen approximately 20 mg/L...
July 14, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28715451/transcriptome-analysis-of-the-sea-cucumber-apostichopus-japonicus-with-variation-in-individual-growth
#14
Lei Gao, Chongbo He, Xiangbo Bao, Meilin Tian, Zhen Ma
The sea cucumber (Apostichopus japonicus) is an economically important aquaculture species in China. However, the serious individual growth variation often caused financial losses to farmers and the genetic mechanisms are poorly understood. In the present study, the extensively analysis at the transcriptome level for individual growth variation in sea cucumber was carried out. A total of 118946 unigenes were assembled from 255861 transcripts, with N50 of 1700. Of all unigenes, about 23% were identified with at least one significant match to known databases...
2017: PloS One
https://www.readbyqxmd.com/read/28712085/long-term-spatiotemporal-trends-and-health-risk-assessment-of-oyster-arsenic-levels-in-coastal-waters-of-northern-south-china-sea
#15
Xuefeng Wang, Lifei Wang, Xiaoping Jia, Donald A Jackson
Long-term spatiotemporal trends and health risk assessment of oyster arsenic levels in the coastal waters of northern South China Sea were investigated in order to help improve the quality and safety control and sustainable aquaculture for mollusks in China. Cultured oysters (Crassostrea rivularis) collected from the waters of 23 bays, harbors, and estuaries along the coast of northern South China Sea from 1989 to 2012 were examined for spatial patterns and long-term temporal trends of oyster arsenic levels...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28712022/effects-of-dietary-lactobacillus-plantarum-on-growth-performance-digestive-enzymes-and-gut-morphology-of-litopenaeus-vannamei
#16
Xiaoting Zheng, Yafei Duan, Hongbiao Dong, Jiasong Zhang
A 15-day feeding trial was conducted to investigate the effect of dietary Lactobacillus plantarum on growth performance, digestive enzyme activities and gut morphology of juvenile Pacific white shrimp, Litopenaeus vannamei (initial body weight = 7.96 ± 0.59 g). Four microbound diets were formulated to contain fermentation supernatant (FS), live bacteria (LB), dead bacteria (DB), and cell-free extract (CE) of L. plantarum. Results indicated that final weight was significantly higher in FS, DB, and CE group in comparison to the control group (P < 0...
July 15, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28709724/a-probiotic-bacillus-strain-containing-amorphous-poly-beta-hydroxybutyrate-phb-stimulates-the-innate-immune-response-of-penaeus-monodon-postlarvae
#17
Joseph Leopoldo Q Laranja, Edgar C Amar, Gladys L Ludevese-Pascual, Yufeng Niu, Mary Joy Geaga, Peter De Schryver, Peter Bossier
In this study, the PHB-accumulating Bacillus sp. JL47 strain (capable of accumulating 55% PHB on cell dry weight) was investigated for its effects on the immune response of giant tiger shrimp (Penaeus monodon) postlarvae (PL) before and after the Vibrio campbellii challenge. Briefly, shrimp PL were cultured and fed with Artemia nauplii enriched with Bacillus sp. JL47. Shrimp receiving the Artemia nauplii without JL47 enrichment were used as control. After 15 days of feeding, the shrimp were challenged with pathogenic V...
July 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28709723/synbiotic-dietary-supplement-affects-growth-immune-responses-and-intestinal-microbiota-of-apostichopus-japonicus
#18
Xitao Wang, Yongxin Sun, Lili Wang, Xiaoyu Li, Kunli Qu, Yongping Xu
A feeding experiment was conducted to investigate the effects of dietary administration of synbiotic with Bacillus lincheniformis WS-2 (CGMCC No. 12813) and alginate oligosaccharides (AOS) on the growth, innate immune response, and intestinal microbiota of the sea cucumber Apostichopus japonicus and its resistance to Vibrio infection. Sea cucumbers were given a control diet (non-supplemented), pro diet (basal diet plus 1 × 10(9) cfu (g diet)(-1)B. lincheniformis WS-2), syn diet (basal diet plus 1 × 10(9) cfu (g diet)(-1)B...
July 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28707702/secondary-immune-response-of-rainbow-trout-following-repeated-immersion-vaccination
#19
R M Jaafar, A Al-Jubury, J K Chettri, I Dalsgaard, P W Kania, K Buchmann
Teleosts are able to raise a protective immune response, comprising both innate and adaptive elements, against various pathogens. This is the basis for a widespread use of vaccines, administered as injection or immersion, in the aquaculture industry. It has been described that repeated injection vaccination of fish raises a secondary immune response, consisting of rapid, accelerated and increased antibody reaction. This study reports how rainbow trout responds to repeated immersion vaccination against yersiniosis (ERM) caused by the bacterial pathogen Yersinia ruckeri...
July 14, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28704667/occurrence-and-temporal-variation-of-antibiotic-resistance-genes-args-in-shrimp-aquaculture-args-dissemination-from-farming-source-to-reared-organisms
#20
Haochang Su, Shan Liu, Xiaojuan Hu, Xiangrong Xu, Wujie Xu, Yu Xu, Zhuojia Li, Guoliang Wen, Yousheng Liu, Yucheng Cao
Considerable attention has been paid to the occurrence and abundance of antibiotic resistance genes (ARGs) in aquatic environments. However, the temporal variation and dissemination of ARGs in aquaculture environments and reared organisms need further study. This study investigated the abundance and diversity of ARGs and bacterial community in water source, shrimp pond water, sediment, and shrimps during the rearing period in Pearl River Delta region, South China. The results showed that sul1, qnrD, cmlA, and floR were the predominant ARGs in the aquaculture samples...
July 10, 2017: Science of the Total Environment
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