Mussel Farming Articles
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Zebra Mussels: Aquatic Invaders
Few subjects aside from zebras can be adequately addressed in terms of black and white, but when it comes to the threat of invasive species there are very few shades of gray. Dreissena polymorpha, more commonly known as zebra mussels, share their namesakes’ signature black and white banding. These little mussels rarely exceed an inch in length, but when they stray from their native Eurasian ...
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Dunea successfully remove mussel seed via Huberts micro-filters
Drinking water company Dunea produces and supplies drinking water to approximately 1.3 million customers in the western part of South Holland. One of the water treatment plants, is low pressure pumping station Brakel. Here, surface water is collected to be purified into drinking water. The surface water of the Afgedamde Maas contains large quantities of mussel seed. This is causing problems in ...
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New Zealand Mussel Farm Uses Real-Time Salinity Monitoring to Reduce Impact of Harvesting Closures
Overview Westpac Mussels worked with IoT firm Adroit to deploy a data buoy equipped with the Aqua TROLL 500 to collect real-time salinity measurements. Live monitoring of salinity data helps the company ensure compliance while reducing the impact of harvesting closures due to weather events. Challenge Water quality monitoring is a necessity in shellfish farming, since filter feeders such as ...
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Everybody in the Tariff Pool!
Since our last tariff update in September, we've received a number of price increase notifications covering the gamut of electrical, lighting and tool manufacturers - many directly attributable to the "List 4B" tariffs effective December 15th. These price increases have effective dates beginning in October, and span through January 2020. In 2018, Trump tweeted: "trade wars are good, and easy to ...
By Connexion
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Innovation the key behind success at Fusion Marine
It has been another busy year for Fusion Marine with the international fish farming sector ordering fish containment pens and a wide range of other specialist aquaculture systems from their diverse range. It has been an important year in other ways too with Fusion Marine moving its administration office from Barcaldine to new modern facilities at Malin House at the European Science Park in ...
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Compliance of brown mussel (Perna perna) production areas in the South of Brazil with the bacteriological criteria of the shellfish hygiene systems in the European Union and United States of America: assessing the impacts on consumer safety
Levels of faecal indicator organisms (FIOs) monitored in surface water and brown mussels collected at 28 production areas in Brazil from August 2012 to October 2013 were used to assess compliance with the bacteriological standards of the shellfish hygiene classification systems used in the European Union (EU) and USA. This classification determines the level of post-harvesting purification ...
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Life stage sensitivity of the marine mussel Mytilus edulis to ammonia
Ammonia is an important contaminant to consider in all toxicity tests. It is especially important to consider the impacts of ammonia in test methods that use sensitive water column organisms exposed to sediments or sediment extracts, such as pore water and elutriate toxicity tests. Embryo‐larval development toxicity tests, such as the 48‐h method using Mytilus mussel species, are particularly ...
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Filtration effects of zebra mussels on pathogens and total bacterial burden in the Odra Lagoon (South Baltic)
As a result of their mode of filter feeding, zebra mussels (Dreissena polymorpha Pall.) have been observed to purify natural water bodies and in vitro. Therefore, the possibility of using zebra mussels for water purification was investigated in a slightly brackish water body of a large lagoon. In this study, water samples were taken above, near and at distance from zebra mussel beds (MB) in the ...
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Evaluation of the short term 12 hour toxicity of 3‐trifluoromethyl‐4‐nitrophenol (TFM) to multiple life stages of Venustaconcha ellipsiformis and Epioblasma triquetra and its host fish (Percina caprodes)
This study evaluated the risk of 12‐h exposures of the lampricide 3‐trifluoromethyl‐4‐nitrophenol (TFM) to multiple life stages of the federally endangered snuffbox (Epioblasma triquetra) and its primary host fish the common logperch (Percina caprodes) as well as a surrogate to the snuffbox, the ellipse (Venustaconcha ellipsiformis). Life stages examined included free glochidia, 1‐wk ...
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Oxidative toxicity of PFCs in green mussel and BAF‐dependent QSAR
Concerns regarding perfluorinated chemicals (PFCs) have risen in recent years due to their ubiquitous presence and high persistency. However, data on the environmental impacts of PFCs on marine organisms is very limited. Oxidative toxicity has been suggested to be one of the major toxic pathways for PFCs to induce adverse effects in organisms. To investigate the PFCs induced oxidative stress ...
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Linking zebra mussel invasion and waterborne commerce in the USA
The zebra mussel, a non-indigenous species in North American freshwater ecosystems, has received significant attention over the past two decades as a costly and damaging invader. In the USA, federal-, state-, and local-level policies designed to control and/or prevent the spread of this species remain flawed, in that they do not everywhere account for (or enforce regulations over) all potential ...
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The effects of salinity exposure on multiple life stages of a common freshwater mussel, Elliptio complanata
There is growing concern over the effects of increased salinization on freshwater organisms, which are largely unknown for unionid mussels. Adult and larval Elliptio complanata were exposed to low level salt concentrations to determine the effects on mussel survival, physiology, and reproduction. Adults were exposed to salt concentrations of 0, 2, 4, and 6 ppt NaCl and monitored over 7 days ...
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Effects of nanopolystyrene on the feeding behavior of the blue mussel (Mytilus edulis L.)
As the industrial production of nanoplastic and the degradation of microplastic into smaller particles at sea increase, the potential amount of nanoplastics in the marine environment rises. It has been reported that mussels uptake 100‐nm polystyrene (PS) beads; to date, however, the effects of this uptake on the organism are unknown. Here we investigated the effects of 30‐nm PS on the feeding ...
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Copper uptake by the marine mussel Mytilus edulis in the presence of fulvic acids
Copper uptake and accumulation by the marine mussel Mytilus edulis were studied at different Cu concentrations in chemically defined artificial seawater in the presence and absence of fulvic acids. Both short‐term uptake of Cu by excised mussel gills and Cu accumulation in whole mussels after 24 h of exposure decreased in the presence of fulvic acids compared with their absence at similar ...
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Changes in the drift and the settlement of the freshwater mussel
Limnoperna fortunei along a headrace channelThe nuisance species Limnoperna fortunei is a freshwater mussel whose infestations have harmed water intake facilities, such as water supply systems. We investigated the changes in the drift and the settlement of L. fortunei along a headrace channel. The densities of the drift and the settlement both decreased dramatically with the downstream distance from the L. fortunei source (a reservoir). In ...
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Human dietary exposure to lead and cadmium via the consumption of mussels and seaweeds from San Jorge Gulf, Patagonia Argentina
Lead and cadmium were determined by atomic absorption spectrometry in Aulacomya atra, Mytilus edulis, Porphyra columbina and Ulva spp. in two sites of the San Jorge Gulf (Argentina). In Punta Maqueda, M. edulis cadmium concentrations were higher than those measured at the mouth of La Mata stream throughout the year. In A. atra, no statistically significant difference was recorded between the two ...
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Rainfall and river flows are predictors for β-glucuronidase positive
Escherichia coli accumulation in mussels and Pacific oysters from the Dart Estuary (England)Rainfall and river flows are environmental variables influencing the microbial status of bivalve mollusc harvesting areas. This study investigated spatial and temporal relationships between rainfall, river flows and concentrations of Escherichia coli in mussels (Mytilus spp.) and Pacific oysters (C. gigas) from three harvesting areas in the Dart Estuary over the period 1996–2009. Mussels growing ...
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Shellfish culture in Chile
The present situation and future projections regarding shellfish culture in Chile are analysed. Production has increased exponentially, mainly of the 'Chilean mussel' Mytilus chilensis (Hupe) and the 'northern scallop' Argopecten purpuratus (Lamarck). At present, seven species are cultured, two of which were introduced. The total invertebrate production corresponding to cultures has increased ...
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Enhancing competitiveness, product quality and market integration of small mussel growers: a South African case study
The key proposition in this paper is that the competitiveness of small firms operating in emerging economies and producing highly perishable products (e.g. mussels) is largely contingent on their ability to contend with high Transaction Costs (TC). The study examines the role of contracting in reducing TC associated with small-scale mussel farming in South Africa. Market risks, uncertainties, ...
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Settlement Dynamics of the Encrusting Epibenthic Macrofauna in Two Creeks of the Caeté Mangrove Estuary (North Brazil)
Abstract The epibenthic encrusting fauna of 2 creeks of the Caeté mangrove estuary, northern Brazil, was studied over a 13 month period using collectors fixed at 2.5 and 3.5 m above the creek bottom and in which upper and lower sides of ceramic and wooden panels were used as settlement substrates. The number of individuals of the most abundant organisms (barnacles, oysters and mussels) settling ...
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