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Full-Text Articles in Life Sciences
Comparative Accumulation And Effects Of Microplastics And Microplastic-Associated Pcb-153 In The White Hard Clam (Meretrix Lyrata) And Giant River Prawn (Macrobrachium Rosenbergii) Following Chronic Exposure, Bao-Son Trinh, Lien Thi Le, Loc Minh Tran, Gunther Rosen, Robert C. Hale
Comparative Accumulation And Effects Of Microplastics And Microplastic-Associated Pcb-153 In The White Hard Clam (Meretrix Lyrata) And Giant River Prawn (Macrobrachium Rosenbergii) Following Chronic Exposure, Bao-Son Trinh, Lien Thi Le, Loc Minh Tran, Gunther Rosen, Robert C. Hale
VIMS Articles
Global environmental abundance of microplastics (MPs) is increasing. MPs may sorb hydrophobic organic contaminants (HOCs), accumulate in and cause deleterious effects on exposed organisms. This study investigated and compared the accumulation and effects of MPs and MP-associated PCB in the two indigenous aquatic organisms in Viet Nam, the white hard clams, Meretrix lyrata, and the giant river prawns, Macrobrachium rosenbergii. The test organisms were exposed to either polyethylene microbeads (PEMBs), waterborne polychlorinated biphenyl 153 (PCB-153), or PEMB-associated PCB-153 (PEMB-PCB) over 28 days. Organismal MP accumulation, survival, and weight gain were examined at various sampling intervals. In general, MP …
Dietary Shifts And The Need For Increased Sustainability Approaches In The Global Aquaculture Seafood System, Darien D. Mizuta
Dietary Shifts And The Need For Increased Sustainability Approaches In The Global Aquaculture Seafood System, Darien D. Mizuta
VIMS Articles
Recent shifts in the global dietary preferences have indicated the fast-growing choice for plant-based, or meat-reduced diets. Among the motivations for such choices, which are increasingly advocated by nations and environmental institutions, is the major concern with global environmental sustainability and impacts of food production systems. Incontestably, the animal food source industry is extremely diverse, and seafood production through the aquaculture value chain remains unfamiliar to key stakeholders possibly leading to an uncomprehensive view and often biased perception of the farming industry within the environmental context. Accordingly, I discuss the importance of seafood production systems, such as the fastest seafood …
Influence Of Oyster Genetic Background On Levels Of Human-Pathogenic Vibrio Spp., Corinne Audemard, Kimberly S. Reece, Robert J. Latour, Lydia M. Bienlien, Ryan B. Carnegie
Influence Of Oyster Genetic Background On Levels Of Human-Pathogenic Vibrio Spp., Corinne Audemard, Kimberly S. Reece, Robert J. Latour, Lydia M. Bienlien, Ryan B. Carnegie
VIMS Articles
Human-pathogenic Vibrio bacteria are common inhabitants of oyster tissues, but our understanding of factors driving the wide range of concentrations found in individual oysters is extremely limited. We examined the influence of oyster sex and parasitism in light of their profound effects on oyster tissues against a backdrop of eastern oysters, Crassostrea virginica, from two diploid and two triploid aquacultured lines. This allowed us to examine not only the effect of oyster ploidy but also of oyster genetics, a factor never investigated with regard to human-pathogenic Vibrio species. We measured levels of total Vibrio vulnificus (vvhA), and of …
Classification And Identification Of Pfiesteria And Pfiesteria-Like Species, K Steidinger, Patrice Mason, Kimberly S. Reece, Lw Haas
Classification And Identification Of Pfiesteria And Pfiesteria-Like Species, K Steidinger, Patrice Mason, Kimberly S. Reece, Lw Haas
VIMS Articles
Dinoflagellates can be classified both botanically and zoologically; however, they are typically put in the botanical division Pyrrhophyta. As a group they appear most related to the protistan ciliates and apicomplexans at the ultrastructure level. Within the Pyrrhophyta are both unarmored and armored forms of the dominant, motile flagellated stage. Unarmored dinoflagellates do not have thecal or wall plates arranged in specific series, whereas armored species have plates that vary in thickness but are specific in number and arrangement. In armored dinoflagellates, the plate pattern and tabulation is a diagnostic character at the family, subfamily, and even genus levels. In …
Osmotic Tolerance And Volume Regulation In In Vitro Cultures Of The Oyster Pathogen Perkinsus Marinus, Cl O'Farrell, Jf La Peyre, Kt Paynter, Em Burreson
Osmotic Tolerance And Volume Regulation In In Vitro Cultures Of The Oyster Pathogen Perkinsus Marinus, Cl O'Farrell, Jf La Peyre, Kt Paynter, Em Burreson
VIMS Articles
Growth rate. cell size, osmotic tolerance, and volume regulation were examined in cells of Perkinsus marinus cultured in media of osmolalities ranging from 168 to 737 mOsm (6.5-27.0 ppt). Cells cultured at the low osmolalities of 168 and 256 mOsm (6.5 and 9.7 ppt) began log phase growth 4 days postsubculture, whereas cells cultured at the higher osmolalities 341, 433, and 737 mOsm (12.7. 16.0, and 27.0 ppt) began log phase growth 2 days postsubculture. During log phase growth, cells from the higher osmolalities 341, 433, and 737 mOsm had shorter doubling times than cells from the lower osmolalities 168 …
Histopathology Of The Thymus Of Coho Salmon Oncorhynchus Kisutch Experimentally Infected With Renibacterium Salmoninarum, E Flano, Sl Kaattari, B Razquin, Aj Villena
Histopathology Of The Thymus Of Coho Salmon Oncorhynchus Kisutch Experimentally Infected With Renibacterium Salmoninarum, E Flano, Sl Kaattari, B Razquin, Aj Villena
VIMS Articles
We report on the histopathological changes occurring in the thymus of coho salmon Oncorhynchus kisutch experimentally infected with Renibacterium salmoninarum. Coho salmon were intraperitoneally infected, and the thymi were collected weekly from 1 to 7 wk post-infection, and processed for ultrastructural study. The thymus appeared to be infected only in fish collected at 6 and 7 wk post-infection. The first stage of the infection was characterized by the presence of a low number of bacteria scattered in the connective tissue of the capsule. Further progression of the thymic infection was characterized by the rupture of the capsular-thymic barrier, and by …