Article
Chemistry, Applied
Han Li, Xiaoyu Xia, Zhenyu Wang, Jiachen Zang, Ming Du
Summary: The study investigated the structure and stability characteristics of oyster ferritin by adding Fe2+ to it. The results showed that the protein structure of ferritin remained largely unchanged after adding Fe2+ and the sample with 1000 Fe2+ exhibited good stability under storage and high temperature conditions.
Article
Food Science & Technology
Roni Nugraha, Thimo Ruethers, Aya C. Taki, Elecia B. Johnston, Shaymaviswanathan Karnaneedi, Sandip D. Kamath, Andreas L. Lopata
Summary: This study investigates the IgE sensitisation profiles of patients with oyster allergy to raw and heated Pacific oyster extract. Tropomyosin is identified as the major allergen responsible for oyster allergy, and the study also reveals partial cross-reactivity and/or co-sensitisation between oyster, prawn, and dust mite allergens. This research emphasizes the importance of using recombinant tropomyosin in improved diagnostics and immunotherapy.
Article
Food Science & Technology
Yuyang Ma, Yahui Wang, Suisui Jiang, Mingyong Zeng
Summary: This study investigated the effect of gelatin on the formation of oyster protein gel and the interaction mechanism between gelatin and oyster protein. The results showed that gelatin improved the texture properties of oyster protein gel and enhanced the gelation process. In addition, new hydrogen bonds and beta-sheets structures were formed between gelatin and oyster protein.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Biology
Carolina Penaloza, Alejandro P. Gutierrez, Lel Eory, Shan Wang, Ximing Guo, Alan L. Archibald, Tim P. Bean, Ross D. Houston
Summary: A chromosome-level assembly for the Pacific oyster (C. gigas) was created and annotated, providing a valuable resource for genetics and genomics studies, as well as selective breeding in aquaculture.
Article
Fisheries
Jiafeng Fang, Chengxun Xu, Qi Li
Summary: This study investigated the effect of inbreeding on gene expression in the Pacific oyster. It was found that there were differentially expressed genes associated with inbreeding depression. This research contributes to a better understanding and management of inbreeding depression in bivalves, and may potentially benefit oyster breeding in aquaculture.
Article
Biochemistry & Molecular Biology
Jiejie Sun, Liyan Wang, Wenwen Yang, Yinan Li, Yingnan Jin, Lingling Wang, Linsheng Song
Summary: The study found an ancient lectin pathway in molluscs, which regulates the production of immune effectors, phagocytosis, and bacterial lysis through complement cascade activation.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2021)
Article
Fisheries
Antoine Jourdan, Romain Morvezen, Florian Enez, Pierrick Haffray, Adeline Lange, Emilie Vetois, Francois Allal, Florence Phocas, Jerome Bugeon, Lionel Degremont, Pierre Boudry
Summary: Selective breeding programs have been initiated for the Pacific oyster Crassostrea gigas, using genomic tools to improve growth and disease resistance. The study evaluated the potential of genomic selection (GS) for growth-related and shell color traits in commercially selected populations. The results showed a high correlation between growth-related traits and low correlation with color traits. The accuracy of prediction was higher with the genomic model compared to the classical model, indicating the potential of GS in mixed-family breeding programs for C. gigas.
Article
Chemistry, Applied
Han Li, Xiaoyi Tan, Xiaoyu Xia, Jiachen Zang, Hesham El-Seedi, Zhenyu Wang, Ming Du
Summary: By introducing a point mutation, the thermal stability of oyster ferritin was enhanced, thus improving its application as a food ingredient.
Article
Environmental Sciences
Micheline S. Labrie, Miles A. Sundermeyer, Brian L. Howes
Summary: An analytical/numerical model was developed to predict the spatial distribution of biodeposits in suspended aquaculture systems. The model was validated in shallow estuaries and can be used by oyster growers and environmental managers to assess the effect of organic matter deposition.
ESTUARIES AND COASTS
(2022)
Article
Environmental Sciences
Yijing Han, Chaoyi Xie, Nini Fan, Hongce Song, Xiaomei Wang, Yanxin Zheng, Meiwei Zhang, Yaqiong Liu, Baoyu Huang, Lei Wei, Xiaotong Wang
Summary: This study used transmission electron microscopy and staining methods to observe melanin in the mantle tissue of Pacific oysters, and preliminarily confirmed its existence. It provides a foundation for further research on melanin synthesis and shell color formation mechanism.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Chemistry, Medicinal
Floriane Boullot, Caroline Fabioux, Helene Hegaret, Pierre Boudry, Philippe Soudant, Evelyne Benoit
Summary: The study reveals that Pacific oysters have a certain sensitivity to paralytic shellfish toxins, with a micromolar range of sensitivity to saxitoxin but less sensitivity to tetrodotoxin. Oysters can be categorized into STX-resistant and STX-sensitive groups regardless of the diet they consume. Additionally, the study highlights the potential of cerebrovisceral nerves of Pacific oysters for electrophysiological and pharmacological studies and demonstrates that the STX sensitivity of oyster nerves can decrease upon exposure to dinoflagellates.
Article
Fisheries
Yan Wang, Dianli Zhao, Jingjie Hu, Zhenmin Bao, Mengqiang Wang
Summary: This study identified differentially expressed proteins in oyster exosomes post bacterial stimulation, revealing the involvement of various proteins in the immune response. The results contribute to a better understanding of the immune functions of oyster exosomes against bacterial infection.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Fisheries
Zhicheng Guo, Jiejie Sun, Xiaoqian Lv, Tong Zhang, Hongsheng Yao, Wei Wu, Zhen Xing, Ning Kong, Lingling Wang, Linsheng Song
Summary: Ferroptosis is a form of cell death in vertebrates that is dependent on iron and oxidation, typically mediated by redox-related molecules. In this study, homologues of glutathione peroxidase 4 (GPX4) and solute carrier family 7 member 11 (SLC7A11, xCT) were identified from the oyster Crassostrea gigas (designated as CgGPX4 and CgxCT). The mRNA transcripts of CgGPX4 and CgxCT were found in various tissues, with the highest expression in the haemocytes. Treatment with erastin induced ferroptosis in oyster haemocytes, as evidenced by cell malformation, cell death, mitochondrial atrophy, and changes in gene expression.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Review
Food Science & Technology
Bertoka Fajar Surya Perwira Negara, Md. Mohibbullah, Jae-Hak Sohn, Jin-Soo Kim, Jae-Suk Choi
Summary: Pacific oysters have high nutritional value and various bioactive components, including proteins, glycogen, minerals, and fatty acids. The bioactive components exhibit antimicrobial, antioxidant, and anti-inflammatory effects. However, most studies on the bioactivity of Pacific oysters are conducted in vitro.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Hoon Choi, Dong-Hoon Im, Yun-Ho Park, Ju-Wook Lee, Sung-Jin Yoon, Un-Ki Hwang
Summary: This study investigates the ingestion and egestion of polystyrene microplastics by Pacific oysters and finds that smaller microplastics have higher ingestion and egestion rates. It also suggests that depuration can reduce the potential risk of microplastics to human health from the intake of maricultural products.
ENVIRONMENTAL POLLUTION
(2022)
Review
Fisheries
Jeanette M. E. Stenton-Dozey, Philip Heath, Jeffrey S. Ren, Leo N. Zamora
Summary: The New Zealand aquaculture industry is focused on Greenshell mussels, Chinook salmon and Pacific oysters, with a goal to increase export earnings to NZ$3 billion by 2035. To maintain its 'clean and green' image, the industry must demonstrate sustainable practices. Although there are regulatory barriers and lack of investment, the development of IMTA systems presents opportunities for sustainable farming designs and diversification within the sector.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2021)
Review
Ecology
Trevyn A. Toone, Rebecca Hunter, Emilee D. Benjamin, Sean Handley, Andrew Jeffs, Jenny R. Hillman
Summary: The study found an increase in shellfish reef conservation research, but also revealed imbalances in the field, with a focus on the United States and Northern Europe, oyster research, and a high proportion of academia-affiliated authors. Additionally, research on social interventions and outcomes lags behind, despite the critical importance of social aspects in conservation work.
RESTORATION ECOLOGY
(2021)
Article
Biology
Natali J. Delorme, Alfonso J. Schmidt, Leonardo N. Zamora, David J. Burritt, Norman L. C. Ragg
Summary: This study quantified oxidative stress in juvenile New Zealand green-lipped mussels using a new method, successfully detecting stress differences in mussels exposed to varying levels of emersion. The integrated method can localize and quantify ROS production in individual bivalve life stages, expanding potential practical applications.
Article
Biochemistry & Molecular Biology
Shaneel Sharma, Leonie Venter, Andrea C. Alfaro, Norman L. C. Ragg, Natali J. Delorme, Leonardo N. Zamora
Summary: The physiological responses of juvenile geoducks undergoing different emersion and recovery stages were investigated, revealing an increase in hemolymph osmolality with longer emersion times and significant differences between emersion groups after recovery. Viability measures of hemocytes showed no significant variation between groups, and metabolic analyses suggested that protein, lipid, and carbohydrate metabolites play a role in energy production in geoducks, with anaerobic pathways and succinate being prominent in longer exposure groups.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS
(2022)
Article
Biology
James Robertson, Andrew Jeffs, Christopher Hedges, Anthony J. R. Hickey
Summary: Isoeugenol, an anaesthetic used in the transportation of live lobsters, acts as a metabolic suppressant, reducing energy expenditure and improving survival rates. This study investigates the impact of isoeugenol on mitochondrial function, with a particular focus on respiration supported by complex I and cytochrome c oxidase. The results demonstrate that isoeugenol inhibits respiration through complex I and indicates it may act as a possible target for isoeugenol's effects.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Fisheries
William J. G. McKay, Andrew G. Jeffs
Summary: This study examines the ability of larval giant kokopu to consume formulated larval diets at different ages and feeding events. The results suggest that as the larvae age, their consumption of formulated feed increases, indicating a potential to reduce the reliance on live feed. However, further research is needed to determine the impact on growth and survival.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2023)
Article
Green & Sustainable Science & Technology
Emilee D. Benjamin, Jenny R. Hillman, Sean J. Handley, Trevyn A. Toone, Andrew Jeffs
Summary: Providing substrate is effective for oyster and mussel restoration. This study tested the effectiveness of adding shell substrate for adult green-lipped mussel restoration and found that it provided little advantage in high-density deployments.
Article
Fisheries
Supono Supono, Maria Mugica, Stefan Spreitzenbarth, Andrew Jeffs
Summary: This study investigated the potential use of two concentrated microalgal diets as a replacement for live microalgae in bivalve nursery culture. The results showed that these diets can be used up to 50% substitution without compromising the survival and nutritional profile of juvenile green-lipped mussels.
AQUACULTURE RESEARCH
(2023)
Article
Ecology
Trevyn A. Toone, Emilee D. Benjamin, Jenny R. Hillman, Sean Handley, Andrew Jeffs
Summary: The onset of the Anthropocene has resulted in significant global declines in natural ecosystems and the valuable goods and services they provide, necessitating ecosystem restoration. However, restoring ecosystems effectively requires accurate identification of causes of decline and clear metrics of success, which can only be achieved with baseline data of pre-degradation and pre-restoration ecosystems. This study demonstrates the use of multidisciplinary baselines in the restoration of mussel reefs in New Zealand, showing how combining various sources and methods allows for comprehensive and reliable assessment of ecosystem changes and confirmation of causes of degradation. This approach provides valuable insights for restoration efforts in quantifying the scales of decline, identifying intervention areas, and establishing metrics of success.
Article
Fisheries
William McKay, Andrew Jeffs
Summary: Optimizing the live feed is crucial for successful fish larviculture, as it impacts both larval health and productivity. This study compared the growth and survival of giant kokopu larvae fed different proportions of first-molt and second-molt Artemia nauplii. The results showed that using enriched second-molt Artemia as the sole feed achieved the best total productivity.
Article
Fisheries
Nicholas P. L. Tuckey, Belinda A. Timms, Graham C. Fletcher, Graeme Summers, Natali J. Delorme, Jessica A. Ericson, Norman L. C. Ragg, Poppy Miller, Reginald Wibisono, Roland Taylor, Serean L. Adams, Leonardo N. Zamora
Summary: Two post-harvest storage trials were conducted to assess refrigerated seawater (RSW) based systems for green-lipped mussel storage. The results showed that RSW and periodic immersion in RSW were beneficial for mussel survival and quality compared to chilled storage. A range of physiological, morphometric, and quality measures were evaluated to assess mussel performance, and the risk of pathogen proliferation was also assessed. The highest mortality rate was observed in the chilled treatment, while the RSW treatment had the lowest mortality rate.
Article
Fisheries
Alaric Mccarthy, Andrew Jeffs, Shaun Ogilvie, Dave Taylor, John Radford, Ian Tuck
Summary: This study assessed the effectiveness of using video cameras mounted on commercial trawls for a deep-sea lobster, and confirmed that video sampling can provide information on habitat associations and fishing efficiency.
Article
Fisheries
L. N. Zamora, J. A. Jury, L. C. Kozal, M. A. Sewell, N. L. C. Ragg, T. S. Leach, J. M. Wong, A. J. Schmidt
Summary: This study aimed to identify reliable screening biomarkers in the early life stages of selectively-bred/hatchery reared green-lipped mussel through lipid quantification using confocal laser scanning microscopy and image analysis, as well as Iatroscan thin layer chromatography/flame ionization detection. The results showed that both methods were successful in detecting differences among larval groups with different genetic backgrounds and growing environments, providing important insights for early screening.
Article
Fisheries
William McKay, Andrew Jeffs
Summary: The selection of artificial feed is crucial for the success of larviculture of fin fish. This study compares three commercial artificial dry feeds and finds that Otohime yields the best growth performance for giant kokopu larvae. Understanding the nutritional needs of larval giant kokopu is important for improving their commercial aquaculture production.
Article
Fisheries
Jayagopal Pozhoth, Andrew Jeffs
Summary: The study suggests that the use of isobutanol can reduce ammonia levels and mortalities during the live transport of tropical lobsters. Treatment with 50 ppm isobutanol in ambient seawater temperature is more effective than cold stunning treatment.
