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Relevant bibliographies by topics / Pacific oyster

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Academic literature on the topic 'Pacific oyster'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 March 2023

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Journal articles on the topic "Pacific oyster"

1

Richards, Gary P., Michael A. Watson, David S. Needleman, Karlee M. Church, and Claudia C. Häse. "Mortalities of Eastern and Pacific Oyster Larvae Caused by the Pathogens Vibrio coralliilyticus and Vibrio tubiashii." Applied and Environmental Microbiology 81, no. 1 (October 24, 2014): 292–97. http://dx.doi.org/10.1128/aem.02930-14.

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ABSTRACTVibrio tubiashiiis reported to be a bacterial pathogen of larval Eastern oysters (Crassostrea virginica) and Pacific oysters (Crassostrea gigas) and has been associated with major hatchery crashes, causing shortages in seed oysters for commercial shellfish producers. Another bacterium,Vibrio coralliilyticus, a well-known coral pathogen, has recently been shown to elicit mortality in fish and shellfish. Several strains ofV. coralliilyticus, such as ATCC 19105 and Pacific isolates RE22 and RE98, were misidentified asV. tubiashiiuntil recently. We compared the mortalities caused by twoV. tubiashiiand fourV. coralliilyticusstrains in Eastern and Pacific oyster larvae. The 50% lethal dose (LD50) ofV. coralliilyticusin Eastern oysters (defined here as the dose required to kill 50% of the population in 6 days) ranged from 1.1 × 104to 3.0 × 104CFU/ml seawater; strains RE98 and RE22 were the most virulent. This study shows thatV. coralliilyticuscauses mortality in Eastern oyster larvae. Results for Pacific oysters were similar, with LD50s between 1.2 × 104and 4.0 × 104CFU/ml.Vibrio tubiashiiATCC 19106 and ATCC 19109 were highly infectious toward Eastern oyster larvae but were essentially nonpathogenic toward healthy Pacific oyster larvae at dosages of ≥1.1 × 104CFU/ml. These data, coupled with the fact that several isolates originally thought to beV. tubiashiiare actuallyV. coralliilyticus, suggest thatV. coralliilyticushas been a more significant pathogen for larval bivalve shellfish thanV. tubiashii, particularly on the U.S. West Coast, contributing to substantial hatchery-associated morbidity and mortality in recent years.

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Chiesa, Stefania, Livia Lucentini, Paula Chainho, Federico Plazzi, Maria Manuel Angélico, Francisco Ruano, Rosa Freitas, and José Lino Costa. "One in a Million: Genetic Diversity and Conservation of the Reference Crassostrea angulata Population in Europe from the Sado Estuary (Portugal)." Life 11, no. 11 (November 3, 2021): 1173. http://dx.doi.org/10.3390/life11111173.

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The production of cupped oysters is an important component of European aquaculture. Most of the production relies on the cultivation of the Pacific oyster Crassostrea gigas, although the Portuguese oyster Crassostrea angulata represents a valuable product with both cultural and economic relevance, especially in Portugal. The authors of the present study investigated the genetic diversity of Portuguese oyster populations of the Sado estuary, both from natural oyster beds and aquaculture facilities, through cox1 gene fragment sequencing. Then, a comparison with a wide dataset of cupped oyster sequences obtained from GenBank (up to now the widest available dataset in literature for the Portuguese oyster) was performed. Genetic data obtained from this work confirmed that the Pacific oyster does not occur in the natural oyster beds of the Sado estuary but showed that the species occasionally occurs in the oyster hatcheries. Moreover, the results showed that despite the founder effect and the bottleneck events that the Sado populations have experienced, they still exhibit high haplotype diversity. Risks are arising for the conservation of the Portuguese oyster reference populations of the Sado estuary due to the occurrence of the Pacific oyster in the local hatcheries. Therefore, researchers, local authorities, and oyster producers should work together to avoid the loss of this valuable resource.

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SU, YI-CHENG, QIANRU YANG, and CLAUDIA HÄSE. "Refrigerated Seawater Depuration for Reducing Vibrio parahaemolyticus Contamination in Pacific Oyster (Crassostrea gigas)." Journal of Food Protection 73, no. 6 (June 1, 2010): 1111–15. http://dx.doi.org/10.4315/0362-028x-73.6.1111.

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The efficacy of refrigerated-seawater depuration for reducing Vibrio parahaemolyticus levels in Pacific oyster (Crassostrea gigas) was investigated. Raw Pacific oysters were inoculated with a mixed culture of five clinical strains of V. parahaemolyticus (105 to 106 most probable number [MPN] per g) and depurated with refrigerated seawater (5°C) in a laboratory-scale recirculation system equipped with a 15-W gamma UV sterilizer. Depuration with refrigerated seawater for 96 h reduced V. parahaemolyticus populations by >3.0 log MPN/g in oysters harvested in the winter. However, 144 h of depuration at 5°C was required to achieve a 3-log reduction in oysters harvested in the summer. Depuration with refrigerated seawater at 5°C for up to 144 h caused no significant fatality in the Pacific oyster and could be applied as a postharvest treatment to reduce V. parahaemolyticus contamination in Pacific oysters. Further studies are needed to validate the efficacy of the depuration process for reducing naturally accumulated V. parahaemolyticus in oysters.

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Markert, Alexandra. "How dense is dense? Toward a harmonized approach to characterizing reefs of non-native Pacific oysters – with consideration of native mussels." NeoBiota 57 (May 29, 2020): 7–52. http://dx.doi.org/10.3897/neobiota.57.49196.

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Pacific oysters Crassostrea (Magallana) gigas have been successfully invading ecosystems worldwide. As an ecosystem engineer, they have the potential to substantially impact on other species and on functional processes of invaded ecosystems. Engineering strength depends on oyster density in space and time. Density has not yet been studied on the extent of reef structural dynamics. This study assessed abundance of naturalized Pacific oysters by shell length (SL) of live individuals and post-mortem shells at six sites over six consecutive years during post-establishment. Individual biomass, i.e. live wet mass (LWM), flesh mass (FM) and live shell mass (SM LIVE), were determined from a total of 1.935 live oysters in order to estimate areal biomass. The generic term density attribute was used for SL-related population categories and the biomass variables LWM, FM, SM LIVE and SM. As the oyster invasion modulated resident Mytilus edulis beds, the study was supplemented by contemporaneously assessed data of mussels and corresponding analyses. Interrelations of abundance and areal biomass revealed distinct linkages between specific density attributes. Most importantly, large individuals were identified as intrinsic drivers for the determination of areal biomass. Additionally, allometry of large oysters differed from small oysters by attenuated scaling relations. This effect was enhanced by oyster density as results showed that crowding forced large individuals into an increasing slender shape. The significant relationship between the density attributes large oyster and biomass enabled a classification of reef types by large oyster abundance. Reef type (simple or complex reef) and oyster size (small or large) were considered by implementing a novel concept of weighted twin functions (TF) for the relationship between SL and individual biomass. This study demonstrates that the interplay of scaling parameters (scalar, exponent) is highly sensitive to the estimation of individual biomass (shape) and that putative similar scaling parameters can exceedingly affect the estimation of areal biomass. For the first time, this study documents the crucial relevance of areal reference, i.e. cluster density (CD) or reef density (RD), when comparing density. RD considers reef areas devoid of oysters and results from CD reduced by reef coverage (RC) as the relative reef area occupied by oysters. A compilation of density attributes at simple and complex reefs shall serve as a density guide. Irrespective of areal reference, oyster structural density attributes were significantly higher at complex than at simple reefs. In contrast, areal reference was of vital importance when evaluating the impact of engineering strength at ecosystem-level. While mussel CD was similar at both reef types, RD at complex reefs supported significantly more large mussels and higher mussel biomass than at simple reefs. Although mussels dominated both reef types by abundance of large individuals, oysters were the keystone engineers by dominating biomass. The prominent status of large oysters for both allometric scaling and density, presumably characteristic for Pacific oyster populations worldwide, should be considered when conducting future investigations. The effort of monitoring will substantially be reduced as only large oysters have to be counted for an empirical characterization of Pacific oyster reefs. The large oyster concept is independent of sampling season, assessment method or ecosystem, and is also applicable to old data sets. Harmonization on the proposed density attributes with a clear specification of areal reference will allow trans-regional comparisons of Pacific oyster reefs and will facilitate evaluations of engineering strength, reef performance and invasional impacts at ecosystem-level.

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Qurani, Risma, Fredinan Yulianda, and Agustinus Mangaratua Samosir. "Spatial Distribution of Pacific Oyster (Crassostrea gigas) Population Related Environment Factor in Coastal Water of Pabean Ilir, Indramayu." Jurnal Moluska Indonesia 4, no. 1 (April 1, 2020): 38–47. http://dx.doi.org/10.54115/jmi.v4i1.12.

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Pacific oysters (Crassostrea gigas, Thunberg, 1793) is a benthic organisme that tend to live and settle in the bottom. One of the pacific oyster habitat is Coastal Water of Pabean Ilir, Indramayu. The purpose of this study was to map spatial condition of the population related habitat of the oyster (Crassostrea gigas). The mapping were done with laptop, using Arc GIS. There were 15 points of sampling. The oyster population in Pabean Ilir can be categorized into three categories: low, medium, and high density. Based on the similarity of environmental characteristics the habitat were divided into four groups. Condition Coastal Water of Pabean Ilir such as temperature, salinity, pH, BOD, TSS, TDS, COD, and composition of substrate indicated Coastal Water of Pabean Ilir have compatibility optimum sufficient habitat to support the growth of pacific oyster

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Nugraha, Roni, Thimo Ruethers, Aya C. Taki, Elecia B. Johnston, Shaymaviswanathan Karnaneedi, Sandip D. Kamath, and Andreas L. Lopata. "Recombinant Tropomyosin from the Pacific Oyster (Crassostrea gigas) for Better Diagnosis." Foods 11, no. 3 (January 30, 2022): 404. http://dx.doi.org/10.3390/foods11030404.

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The Pacific oyster is a commercially important mollusc and, in contrast to most other shellfish species, frequently consumed without prior heat treatment. Oysters are rich in many nutrients but can also cause food allergy. Knowledge of their allergens and cross-reactivity remains very limited. These limitations make an optimal diagnosis of oyster allergy difficult, in particular to the Pacific oyster (Crassostrea gigas), the most cultivated and consumed oyster species worldwide. This study aimed to characterise IgE sensitisation profiles of 21 oyster-sensitised patients to raw and heated Pacific oyster extract using immunoblotting and advanced mass spectrometry, and to assess the relevance of recombinant oyster allergen for improved diagnosis. Tropomyosin was identified as the major allergen recognised by IgE from 18 of 21 oyster-sensitised patients and has been registered with the WHO/IUIS as the first oyster allergen (Cra g 1). The IgE-binding capacity of oyster-sensitised patients’ IgE to purified natural and recombinant tropomyosin from oyster, prawn, and dust mite was compared using enzyme-linked immunosorbent assay. The degree of IgE binding varied between patients, indicating partial cross-sensitisation and/or co-sensitisation. Amino acid sequence alignment of tropomyosin from these three species revealed five regions that contain predicted IgE-binding epitopes, which are most likely responsible for this cross-reactivity. This study fully biochemically characterises the first and major oyster allergen Cra g 1 and demonstrates that the corresponding recombinant tropomyosin should be implemented in improved component-resolved diagnostics and guide future immunotherapy.

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Mikac, Barbara, Alessandro Tarullo, Marina Antonia Colangelo, Marco Abbiati, and Federica Costantini. "Shell Infestation of the Farmed Pacific Oyster Magallana gigas by the Endolith Bivalve Rocellaria dubia." Diversity 13, no. 11 (October 23, 2021): 526. http://dx.doi.org/10.3390/d13110526.

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Oyster shells are substratum for different epibiontic and endobiontic organisms, including pests and parasites. Rocellaria dubia is endolithic and facultative tube-dwelling bivalve, boring in different calcareous substrates, including the shells of bivalves. In 2020, R. dubia was found as endolithic in the shells of the Pacific oyster Magalana gigas, from an oyster farm off the Sacca di Goro lagoon (Emilia-Romagna region, Northern Adriatic Sea, Italy). The purpose of this study was to describe this newly recorded association. Altogether, 136 specimens of R. dubia were found in 15 oysters, photographed under a stereoscope, and their length was measured. Heavily infested oysters hosted tens of R. dubia borers, which were perforating the whole thickness of the oyster valves. The flesh of these oysters was heavily damaged, suggesting parasitic association. R. dubia specimens were categorized into three age classes (0–1, 1–2, and 2–3 years old). M. gigas/R. dubia might be a widespread association, overlooked due to the very scarce research on macrofauna associated with M. gigas. Considering the negative effects of R. dubia endobiosis on oyster fitness, and possible impacts on oyster aquaculture, further research should be conducted in order to elucidate the distribution and ecological characteristics of this parasitic association.

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Boullot, Floriane, Caroline Fabioux, Hélène Hégaret, Pierre Boudry, Philippe Soudant, and Evelyne Benoit. "Electrophysiological Evaluation of Pacific Oyster (Crassostrea gigas) Sensitivity to Saxitoxin and Tetrodotoxin." Marine Drugs 19, no. 7 (June 30, 2021): 380. http://dx.doi.org/10.3390/md19070380.

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Pacific oysters (Crassostrea gigas) may bio-accumulate high levels of paralytic shellfish toxins (PST) during harmful algal blooms of the genus Alexandrium. These blooms regularly occur in coastal waters, affecting oyster health and marketability. The aim of our study was to analyse the PST-sensitivity of nerves of Pacific oysters in relation with toxin bio-accumulation. The results show that C. gigas nerves have micromolar range of saxitoxin (STX) sensitivity, thus providing intermediate STX sensitivity compared to other bivalve species. However, theses nerves were much less sensitive to tetrodotoxin. The STX-sensitivity of compound nerve action potential (CNAP) recorded from oysters experimentally fed with Alexandrium minutum (toxic-alga-exposed oysters), or Tisochrysis lutea, a non-toxic microalga (control oysters), revealed that oysters could be separated into STX-resistant and STX-sensitive categories, regardless of the diet. Moreover, the percentage of toxin-sensitive nerves was lower, and the STX concentration necessary to inhibit 50% of CNAP higher, in recently toxic-alga-exposed oysters than in control bivalves. However, no obvious correlation was observed between nerve sensitivity to STX and the STX content in oyster digestive glands. None of the nerves isolated from wild and farmed oysters was detected to be sensitive to tetrodotoxin. In conclusion, this study highlights the good potential of cerebrovisceral nerves of Pacific oysters for electrophysiological and pharmacological studies. In addition, this study shows, for the first time, that C. gigas nerves have micromolar range of STX sensitivity. The STX sensitivity decreases, at least temporary, upon recent oyster exposure to dinoflagellates producing PST under natural, but not experimental environment.

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Li, Xing-Xia, Wen-Chao Yu, Zhong-Qiang Cai, Cheng He, Na Wei, Xiao-Tong Wang, and Xi-Qing Yue. "Molecular Cloning and Characterization of Full-Length cDNA of Calmodulin Gene from Pacific OysterCrassostrea gigas." BioMed Research International 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/5986519.

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The shell of the pearl oyster (Pinctada fucata) mainly comprises aragonite whereas that of the Pacific oyster (Crassostrea gigas) is mainly calcite, thereby suggesting the different mechanisms of shell formation between above two mollusks. Calmodulin (CaM) is an important gene for regulating the uptake, transport, and secretion of calcium during the process of shell formation in pearl oyster. It is interesting to characterize the CaM in oysters, which could facilitate the understanding of the different shell formation mechanisms among mollusks. We cloned the full-length cDNA of Pacific oyster CaM (cgCaM) and found that the cgCaM ORF encoded a peptide of 113 amino acids containing three EF-hand calcium-binding domains, its expression level was highest in the mantle, hinting that the cgCaM gene is probably involved in shell formation of Pacific oyster, and the common ancestor of Gastropoda and Bivalvia may possess at least three CaM genes. We also found that the numbers of some EF hand family members in highly calcified species were higher than those in lowly calcified species and the numbers of these motifs in oyster genome were the highest among the mollusk species with whole genome sequence, further hinting the correlation between CaM and biomineralization.

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10

ARAI, SAKURA, SATOKO YAMAYA, KAYOKO OHTSUKA, NORIKO KONISHI, HIROMI OBATA, TADASUKE OOKA, SHOUHEI HIROSE, AKEMI KAI, and YUKIKO HARA-KUDO. "Detection of Escherichia albertii in Retail Oysters." Journal of Food Protection 85, no. 1 (September 30, 2021): 173–79. http://dx.doi.org/10.4315/jfp-21-222.

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ABSTRACT Escherichia albertii is an emerging foodborne pathogen. Owing to its distribution in river water, it is important to determine the presence of E. albertii in aquaculture-related foods. In this study, we investigated the distribution of E. albertii in retail oyster samples. A total of 427 raw oyster samples (385 Pacific oysters and 42 Japanese rock oysters) were enriched in modified Escherichia coli broth (mEC) or mEC supplemented with novobiocin (NmEC) at 42°C. The cultures were used for E. albertii–specific nested PCR assay, as well as for E. albertii isolation using deoxycholate hydrogen sulfide lactose agar (DHL), DHL supplemented with rhamnose and xylose, and MacConkey agar supplemented with rhamnose and xylose. The population of E. albertii in nested PCR-positive samples was determined using the most-probable-number (MPN) method. E. albertii isolates were subjected to biochemical and genetic characterization. E. albertii was detected in 5 (1.6%) of 315 Pacific oyster samples (one piece each), 2 (2.9%) of 70 Pacific oyster samples (25 g each), and 2 (4.8%) of 42 Japanese rock oyster samples procured from four geographically distinct regions. A total of 64 E. albertii strains were isolated from eight of the nine nested PCR assay–positive oyster samples, and the MPN value was under the detection limit (<3 MPN/10 g). A specific season or month for detecting E. albertii was not observed in this study, suggesting that the pathogen is present in seawater. All the E. albertii isolates, except one, were positive for the virulence factor eae, indicating that these isolates have the potential to infect humans. HIGHLIGHTS

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Dissertations / Theses on the topic "Pacific oyster"

1

Davis, Jonathan P. "Studies on the influence of ambient temperature and food supply on growth rate, carbohydrate content and reproductive output in diploid and triploid Pacific oysters, Crassostrea gigas (Thunberg) /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/5347.

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2

Paltiel, Charles J. "An analysis of the 1994-1996 northern Strait of Georgia oyster survey." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51440.pdf.

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Takagi, Masaya. "Studies on the shell formation mechanism of pacific oyster." Kyoto University, 2007. http://hdl.handle.net/2433/136536.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第13117号
農博第1622号
新制||農||941(附属図書館)
学位論文||H19||N4243(農学部図書室)
UT51-2007-H390
京都大学大学院農学研究科応用生物科学専攻
(主査)助教授豊原治彦, 教授田中克, 教授永尾雅哉
学位規則第4条第1項該当

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Grason, Emily W. Miner Benjamin G. "Alien vs. predator : effects of a native predator on two invasive oyster drills and oysters in Washington State /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=360&CISOBOX=1&REC=5.

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Perera, Percy. "Heavy metal concentrations in the Pacific oyster Crassostrea gigas thesis submitted in partial fulfilment of the degree of Master of Applied Science, Auckland University of Technology, September 2004." Full thesis. Abstract, 2004.

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Pieterse, Aldi. "Growth, condition, survival and feeding rate of the Pacific oyster (Crassostrea gigas Thunberg) cultured in three distinct South African environments." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79833.

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Money, Cathryn. "Trace metal chemical speciation and acute toxicity to Pacific oyster larvae." Thesis, University of Plymouth, 2008. http://hdl.handle.net/10026.1/2252.

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Controlled laboratory studies showed that the toxicity induced by biologically relevant trace metal species of Cu, Cd, Pb and Zn on embryo-larval development occurred at concentrations in excess of those found in the natural environinent, except for Cu in metal perturbed areas. Average free ion concentrations inducing 50% abnormal development( EC50feew) ere determineda s 0.23 nM CU2+8, 8.0 rim Cd2+,1 28 nM Zn2+a nd 3 62 nM Pb 2+ . However, the response to some binary metal combinations indicated enhanced (synergy) toxicity at concentrations relevant for estuarine waters (e. g. EC5of'. for Cu2+i n the presence of C(ý: +, Zn2+a nd Pb2 +w as 0.004,0.02 and 0.04 nM, respectively). A comparison of voltammetric instrumentation (voltammetric in situ profiling (VIP) system versus Hanging Mercury Drop Electrode with potentiostat) highlighted the advantage of high resolution measurements (ca. 20-60 min intervals) for environmental studies and the minimisation of artefacts associated with discrete sampling methodologies. Field-based studies were carried out in two contrasting estuaries in SW England, one heavily impacted with metal contaminants (Fal Estuary) and another subject to greater variety of anthropogenic influences (Tamar Estuary). High resolution in situ trace metal speciationm easurementsc, arried out over tidal cycles, identified important information on the temporal and spatial distributions of biologically relevant dynamic (<4 nm) metal species of Cd, Pb and Cu. Variation in embryo-larval responses to discrete samples from these estuaries, effectively paralleled the metal speciation measurements showing enhanced toxicity when the marine water influence was at its lowest. In both systems, the results indicated that the combined effect of the metals studied was likely to have provided a significant contribution to the bioassay response. However, the difficulty in de-coupling the speciation measurements with biological responses was evident and supports the need for more comprehensive campaigns to study the impact of contaminants on ecosystem functioning. Bioassay and metal speciation analysis techniques were complementary, exhibiting high sensitivity and rapid responses, and would be considered effective screening tools for waters subject to intermittent inputs of metal contaminants and areas with recognised pressures. The integrated approach has extended our knowledge of trace metal speciation in estuarine environments and their effects on the developing embryos of the Pacific oyster. This approach has the potential for wider application.

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Evans, Olivia May. "Transmission of Ostreid herpesvirus-1 in the Pacific Oyster (Crassostrea gigas)." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15819.

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Ostreid herpesvirus-1 microvariant (OsHV-1) is a member of the family Malacoherpesviridae within the order Herpesvirales. OsHV-1 microvariants have been responsible for mass mortality events in commercially produced Pacific oysters (Crassostrea gigas) in Australia, New Zealand and Europe, since their first detection in France and Australasia in 2008 and 2010, respectively. OsHV-1 presents a significant threat to the Australian C. gigas industry (worth AU$53 million in 2007/08), with all age and size classes of C. gigas affected by the virus. Oysters <1 year of age are the most susceptible age class, with mortalities of 60% to 100% observed in France and Australia. Of great concern to the industry is the propensity of the virus to persist in a waterway after initial infection, resulting in recurrent, seasonal outbreaks of disease. The commercial production of C. gigas has ceased entirely in two key estuaries in NSW, Australia as a result of the recurrent disease caused by OsHV-1. The need to develop robust farm management strategies that will allow growers to produce C. gigas in the presence of OsHV-1 is apparent. In order to achieve this goal, a thorough understanding of the transmission and spread of OsHV-1, and the factors that lead to transmission and expression of the disease is required. One of the largest knowledge gaps concerns the transmission of the virus in the estuarine environment. This thesis was focused on addressing several of these gaps by assessing the transmission, detection and distribution of OsHV-1 in seawater, the occurrence of OsHV-1 disease outbreaks to identify periods of high and low risk, the persistence of OsHV-1 in farmed and wild oysters and the potential for them to act as sources of virus in subsequent outbreaks, and possible risk factors for OsHV-1 transmission and expression of clinical disease.

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Lokmer, Ana [Verfasser]. "Pacific oyster holobiont in the changing environment : a microbial perspective / Ana Lokmer." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1169132618/34.

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Switzer, Soleil Elana. "Invertebrate fouling community composition associated with Pacific oyster (Crassostrea gigas) suspended tray culture." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/21646.

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Fouling organisms associated with suspended oyster aquaculture can significantly increase operational costs for growers and significantly decrease product marketability. Currently, there is little information available on the fouling communities present on deep-water, suspended tray Pacific oysters (Crassostrea gigas). In general, the industry practice in tray production of Pacific oyster is to use plastic trays, but a new polyvinyl-coated metal tray, which accommodates higher oyster densities, has recently become available. The objectives of this thesis were firstly, to assess whether differences exist in the extent of tray fouling between the 2 tray types using abundance, species richness, biomass, and dominance (univariate analyses) and the Bray-Curtis Dissimilarity Coefficient (multivariate, cluster analysis) as measures (Chapter 2) and secondly, to describe variation in the fouling organisms present on the oysters in the 2 tray types using the same univariate and multivariate analyses (Chapter 3). This study took place on a commercial oyster farm between the months of October 2006 and October 2007. Overall, there was little difference in the extent of fouling communities between the tray types, although a few species were present on plastic trays only, but in very low abundance. The fouling communities associated with the trays and oysters were studied in the winter, spring, summer (tray only) and fall to determine seasonal variation in the fouling communities. Abundance, species richness, biomass and dominance in the tray fouling communities were affected by season with the greatest values in July and the lowest values in January. Season also influenced the oyster fouling communities. Abundance, biomass and dominance of the fouling communities on the oysters was higher in October, while species richness was lowest in January compared to April or October. The seasonal changes observed in the fouling communities on both the trays and oysters were driven largely by a few species. High abundances of Caprella mutica and Mytilus sp. on the trays in July could impact oyster growth through the reduction of water flow through the trays or, in the case of Mytilus sp., through direct competition with the oysters for food and/or space.

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Books on the topic "Pacific oyster"

1

Pacific oyster culture in British Columbia. Ottawa: Dept. of Fisheries and Oceans, 1988.

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2

Bright, Kevin J. The effects of temperature on metamorphosis of the Pacific oyster Crassostrea gigas. Bellingham, Wash: Huxley College of Environmental Studies, Western Washington University, 1986.

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Kimani, Edward N. Seed collection and growth of the blacklip pearl oyster pinctada margatifera L.: Experiments for small-scale culture in Kenya : final report. [Zanzibar]: WIOMSA, 2004.

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Scales, Peter B. A Canada wide marketing study of the potential for increased sales of Pacific oysters. Alert Bay, B.C: Nimkish Oyster Project, 1985.

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5

Pauley, Gilbert B. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) : Pacific oyster. Washington, DC: The Service, 1988.

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6

National Shellfisheries Association. Pacific Coast Section. and Pacific Coast Oyster Growers Association., eds. National Shellfisheries Association (Pacific Coast Section) and Pacific Coast Oyster Growers Association: Abstracts, 1985, Portland, Oregon. [Portland, Or.?: National Shellfisheries Association, Pacific Coast Section, 1985.

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Van Der Raay, Birgitta M., Troutt David, U.S. Army Engineer Waterways Experiment Station. Coastal Ecology Group, National Wetlands Research Center (U.S.), and University of Washington. Washington Cooperative Fishery Research Unit, eds. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) : Pacific oyster. Washington, DC: The Service, 1988.

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8

Pauley, Gilbert B. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) : dungeness crab. Washington, DC: Fish and Wildlife Service, 1986.

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9

Pauley, Gilbert B. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) : sockeye salmon. Vicksburg, MS: Coastal Ecology Group, Waterways Experiment Station, U.S. Army Corps of Engineers, 1989.

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10

Pauley, Gilbert B. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest) : steelhead trout. Washington, DC: Fish and Wildlife Service, U.S. Dept. of the Interior, 1986.

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Book chapters on the topic "Pacific oyster"

1

Takahashi, Jun, Chieko Yamashita, Kenji Kanasaki, and Haruhiko Toyohara. "Functional Analysis on Shelk2 of Pacific Oyster." In Biomineralization, 333–39. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1002-7_35.

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Shimizu, Nobuyoshi, Jong-Young Lee, Yoshiko Shimizu, Hideki Ohtake, Yoko Sato, and Shuichi Asakawa. "Genomics of the Pacific Oyster Crassostrea gigas." In Aquatic Genomics, 128–32. Tokyo: Springer Japan, 2003. http://dx.doi.org/10.1007/978-4-431-65938-9_11.

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Gutow, Lars, and Christian Buschbaum. "Invasion of the Wadden Sea by the Pacific Oyster (Magallana gigas): A Risk to Ecosystem Services?" In Atlas of Ecosystem Services, 233–35. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-96229-0_36.

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Fleury, P. G., E. Goyard, J. Mazurié, S. Claude, J. F. Bouget, A. Langlade, and Y. Le Coguic. "The assessing of Pacific oyster (Crassostrea gigas) rearing performances by the IFREMER/REMORA network: method and first results (1993–98) in Brittany (France)." In Coastal Shellfish — A Sustainable Resource, 195–208. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0434-3_20.

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Price, Lisa L. "Oysters from Tide to Table in the Pacific Northwest." In Coastal Heritage and Cultural Resilience, 113–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99025-5_6.

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Hedgecock, Dennis. "Genomic approaches to understanding heterosis and improving yield of Pacific oysters." In Aquatic Genomics, 73–83. Tokyo: Springer Japan, 2003. http://dx.doi.org/10.1007/978-4-431-65938-9_6.

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Graham, Philip, Luca Palazzo, Stefano Carboni, Trevor Telfer, Maura Baroli, and Giuseppe Andrea de Lucia. "Microplastics Uptake and Egestion Dynamics in Pacific Oysters, Magallana Gigas (Thunberg, 1793), Under Controlled Conditions." In Springer Water, 198–204. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45909-3_32.

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Hedgecock, D. "THE CUPPED OYSTER AND THE PACIFIC OYSTER." In Conservation of Fish and Shellfish Resources, 115–37. Elsevier, 1995. http://dx.doi.org/10.1016/b978-012690685-1/50009-6.

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9

RaLonde. "Basic Biology of the Pacific Oyster." In Alaska Oyster Growers Manual, 3–41. Alaska Sea Grant, University of Alaska Fairbanks, 2012. http://dx.doi.org/10.4027/aogm.2012.01.

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"CRYOPRESERVATION OF PACIFIC OYSTER SPERM." In Methods in Reproductive Aquaculture, 509–14. CRC Press, 2008. http://dx.doi.org/10.1201/9780849380549-48.

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Conference papers on the topic "Pacific oyster"

1

A.V., Voykina, Bugaev L.A., Zykina V.V., and Kirichenko O.V. "THE USE OF BIOCHEMICAL METHODS IN THE DIAGNOSIS OF THE CONDITION OF THE PACIFIC OYSTER (CRASSOSTREA GIGAS) FROM THE MARICULTURE FARMS OF THE BLACK SEA." In II INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE "DEVELOPMENT AND MODERN PROBLEMS OF AQUACULTURE" ("AQUACULTURE 2022" CONFERENCE). DSTU-Print, 2022. http://dx.doi.org/10.23947/aquaculture.2022.37-40.

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The physiological state of the pacific oyster (Crassostrea gigas) from mussel and oyster farms of the Black Sea coast of Crimea and the Caucasus in the spring-summer period of 2020-2021 is studied. Physiological and biochemical analysis showed that the overall antioxidant status in the oyster hepatopancreas was higher in the spring season, and in the gills – at the end of the summer season. It was revealed that the adaptive status is characterized by high variability of indicators and depends on the intensity of the impact of exogenous and endogenous factors.

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2

Krapa, Ana-Maria, Elena Buhaciuc-Ionita, Marian Ionita, and Elena Iulia Iorgu. "Invasive species in the context of climate change: the case of Magallana Gigas (Thunberg, 1793) in the Black Sea." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.11.

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The current climate changes are having a significant impact on species distribution. While some species are affected, others are thriving in these new conditions, expanding their range. This is also the case of some invasive species who seem to benefit from these changes. The invasive Pacific oyster Magallana gigas is among these species. The current situation of the Pacific oyster in the Black Sea is discussed, with new data from the Romanian waters.

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3

Wolniakowski, K., M. Stephenson, and G. Ichikawa. "Tributyltin Concentrations and Pacific Oyster Deformations in Coos Bay, Oregon." In OCEANS '87. IEEE, 1987. http://dx.doi.org/10.1109/oceans.1987.1160632.

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4

L.A., Bugaev, Voikina A.V., Morozova M.A., and Maltsev V.N. "APPROACHES TO DETERMINING THE WELL-BEING OF MARICULTURAL OYSTER FARMS." In II INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE "DEVELOPMENT AND MODERN PROBLEMS OF AQUACULTURE" ("AQUACULTURE 2022" CONFERENCE). DSTU-Print, 2022. http://dx.doi.org/10.23947/aquaculture.2022.32-36.

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The paper presents the results of studies of the parasitological, infectious and biochemical status of the giant oyster (Crassostrea gigas) from the Black Sea mariculture farms. The studies were carried out in May and August 2020. The occurrence of pathogens of clionosis, polydorosis, hexamitosis in oysters grown in the Black Sea was revealed. Vibrios Vibrio pomeroyi, V. gigantis, V. pacinii, V. harveyi, V. alginolyticus, V. fortis were isolated among the causative agents of infectious diseases of molluscs, of which Vibrio pomeroyi, V. alginolyticus were recognized as pathogenic for Crassostrea gigas. The reference ranges of indicators of enzymes of the antioxidant complex were determined. The obtained data allow planning both preventive and therapeutic measures on oyster farms.

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Acharya, Tathagata, and Ram V. Devireddy. "Intracellular Ice Formation in Cell Suspensions Measured Using a Cryomicroscope and a Calorimeter." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41308.

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Injury to biological cells during the freezing-thawing process of a cryopreservation protocol is related to the thermodynamic state of the intracellular water. The two primary biophysical phenomena are water transport and intracellular ice formation (IIF). Unfortunately, there is no technique currently available to measure IIF in the cells of opaque tissue sections. In this proceeding we report the use of a calorimeter to assess IIF in two different cell suspensions, adult stem cells and pacific oyster embryos. The close agreement between the IIF data obtained using the calorimetric data with corresponding data obtained using a well-established cryomicroscopy technique validated the calorimetric method. Since, the calorimetric measurements are independent of shape and size, it is ideally suited to measure IIF in opaque tissue sections; the focus of future studies.

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6

Ardura, Alba, Almudena Gonzalez-Sanz, Laura Clusa, Serge Planes, and Eva Garcia-Vazquez. "Beware of Oysters. Rapid Advance of Non-Native Species in Tropical Pacific Islands <sup>†</sup>." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09517.

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Reports on the topic "Pacific oyster"

1

Oliver, Kimberly. A Chitin-Binding Protein Ultra-highly expressed in the Outer Fold of Mantle is Related to Shell Colour in Pacific Oyster Crassostrea gigas. ResearchHub Technologies, Inc., April 2022. http://dx.doi.org/10.55277/researchhub.jg604pn4.

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Oliver, Kimberly. A Chitin-Binding Protein Ultra-highly expressed in the Outer Fold of Mantle is Related to Shell Colour in Pacific Oyster Crassostrea gigas. ResearchHub Technologies, Inc., April 2022. http://dx.doi.org/10.55277/researchhub.jg604pn4.

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3

Capelle, Jakob, and Pauline Kamermans. Feasibility study on culturing Pacific oysters in the Wadden Sea of Schleswig-Holstein. Yerseke: Wageningen Marine Research, 2017. http://dx.doi.org/10.18174/430123.

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