"Frutti di Mare" redirects here. For the pizza variety, see seafood pizza.
Seafood includes any form of food taken from the sea.
Annual seafood consumption per capita (2017)
Seafood is any form of sea life regarded as food by humans, prominently including fish and shellfish. Shellfish include various species of molluscs (e.g., bivalve molluscs such as clams, oysters, and mussels, and cephalopods such as octopus and squid), crustaceans (e.g. shrimp, crabs, and lobster), and echinoderms (e.g. sea cucumbers and sea urchins). Historically, marine mammals such as cetaceans (whales and dolphins) as well as seals have been eaten as food, though that happens to a lesser extent in modern times. Edible sea plants such as some seaweeds and microalgae are widely eaten as sea vegetables around the world, especially in Asia.
Seafood is an important source of (animal) protein in many diets around the world, especially in coastal areas. Semi-vegetarians who consume seafood as the only source of meat are said to adhere to pescetarianism.
The harvesting of wild seafood is usually known as fishing or hunting, while the cultivation and farming of seafood is known as aquaculture and fish farming (in the case of fish). Most of the seafood harvest is consumed by humans, but a significant proportion is used as fish food to farm other fish or rear farm animals. Some seafoods (i.e. kelp) are used as food for other plants (a fertilizer). In these ways, seafoods are used to produce further food for human consumption. Also, products such as fish oil, spirulina tablets, fish collagen, and chitin are made from seafoods. Some seafood is fed to aquarium fish, or used to feed domestic pets such as cats. A small proportion is used in medicine or is used industrially for nonfood purposes (e.g. leather).
Various foods depicted in an Egyptian burial chamber, including fish, c. 1400 BCE.
The harvesting, processing, and consuming of seafoods are ancient practices with archaeological evidence dating back well into the Paleolithic.[2][3] Findings in a sea cave at Pinnacle Point in South Africa indicate Homo sapiens (modern humans) harvested marine life as early as 165,000 years ago,[2] while the Neanderthals, an extinct human species contemporary with early Homo sapiens, appear to have been eating seafood at sites along the Mediterranean coast beginning around the same time.[4] Isotopic analysis of the skeletal remains of Tianyuan man, a 40,000-year-old anatomically modern human from eastern Asia, has shown that he regularly consumed freshwater fish.[5][6]Archaeology features such as shell middens,[7] discarded fish bones, and cave paintings show that sea foods were important for survival and consumed in significant quantities. During this period, most people lived a hunter-gatherer lifestyle and were, of necessity, constantly on the move. However, early examples of permanent settlements (though not necessarily permanently occupied), such as those at Lepenski Vir, were almost always associated with fishing as a major source of food.
The ancient riverNile was full of fish; fresh and dried fish were a staple food for much of the population.[8] The Egyptians had implements and methods for fishing and these are illustrated in tomb scenes, drawings, and papyrus documents. Some representations hint at fishing being pursued as a pastime.
World fisheries harvest, both wild and farmed, in million tonnes, 1950–2010[9]
World fisheries harvest, wild capture versus aquaculture production, in million tonnes 1950–2010[9]
Fishing scenes are rarely represented in ancient Greek culture, a reflection of the low social status of fishing. However, Oppian of Corycus, a Greek author wrote a major treatise on sea fishing, the Halieulica or Halieutika, composed between 177 and 180. This is the earliest such work to have survived to the modern day. The consumption of fish varied by the wealth and location of the household. In the Greek islands and on the coast, fresh fish and seafood (squid, octopus, and shellfish) were common. They were eaten locally but more often transported inland. Sardines and anchovies were regular fare for the citizens of Athens. They were sometimes sold fresh, but more frequently salted. A stele of the late 3rd century BCE from the small Boeotian city of Akraiphia, on Lake Copais, provides us with a list of fish prices. The cheapest was skaren (probably parrotfish) whereas Atlantic bluefin tuna was three times as expensive.[10] Common salt water fish were yellowfin tuna, red mullet, ray, swordfish, or sturgeon, a delicacy that was eaten salted. Lake Copais itself was famous in all of Greece for its eels, celebrated by the hero of The Acharnians. Other freshwater fish were pike fish, carp, and the less appreciated catfish.
Pictorial evidence of Roman fishing comes from mosaics.[11] At a certain time, the goatfish was considered the epitome of luxury, above all because its scales exhibit a bright red colour when it dies out of water. For this reason, these fish were occasionally allowed to die slowly at the table. There even was a recipe where this would take place in Garo, in the sauce. At the beginning of the Imperial era, however, this custom suddenly came to an end, which is why mullus in the feast of Trimalchio (see the Satyricon) could be shown as a characteristic of the parvenu, who bores his guests with an unfashionable display of dying fish.
In medieval times, seafood was less prestigious than other animal meats, and was often seen as merely an alternative to meat on fast days. Still, seafood was the mainstay of many coastal populations. Kippers made from herring caught in the North Sea could be found in markets as far away as Constantinople.[12] While large quantities of fish were eaten fresh, a large proportion was salted, dried, and, to a lesser extent, smoked. Stockfish - cod that was split down the middle, fixed to a pole, and dried - was very common, though preparation could be time-consuming, and meant beating the dried fish with a mallet before soaking it in water. A wide range of mollusks (including oysters, mussels and scallops) were eaten by coastal and river-dwelling populations, and freshwater crayfish were seen as a desirable alternative to meat during fish days. Compared to meat, fish was much more expensive for inland populations, especially in Central Europe, and therefore not an option for most.[13]
Modern knowledge of the reproductive cycles of aquatic species has led to the development of hatcheries and improved techniques of fish farming and aquaculture. A better understanding of the hazards of eating raw and undercooked fish and shellfish has led to improved preservation methods and processing.
The following table is based on the ISSCAAP classification (International Standard Statistical Classification of Aquatic Animals and Plants) used by the FAO to collect and compile fishery statistics.[14] The production figures have been extracted from the FAO FishStat database,[15] and include both capture from wild fisheries and aquaculture production.
Demersal fish live and feed on or near the bottom of the sea.[16] Some seafood groups are cod, flatfish, grouper and stingrays. Demersal fish feed mainly on crustaceans they find on the sea floor, and are more sedentary than the pelagic fish. Pelagic fish usually have the red flesh characteristic of the powerful swimming muscles they need, while demersal fish usually have white flesh.
Molluscs (from the Latin molluscus, meaning soft ) are invertebrates with soft bodies that are not segmented like crustaceans. Bivalves and gastropods are protected by a calcareousshell which grows as the mollusc grows.
Bivalves, sometimes referred to as clams, have a protective shell in two hinged parts. A valve is the name used for the protective shell of a bivalve, so bivalve literally means two shells. Important seafood bivalves include oysters, scallops, mussels and cockles. Most of these are filter feeders which bury themselves in sediment on the seabed where they are safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some, such as scallops, can swim. Bivalves have long been a part of the diet of coastal communities. Oysters were cultured in ponds by the Romans and mariculture has more recently become an important source of bivalves for food.
Cephalopods, except for nautilus, are not protected by an external shell. Cephalopod literally means head-foots, because they have limbs which appear to issue from their head. They have excellent vision and high intelligence. Cephalopods propel themselves with a water jet and lay down "smoke screens" with ink. Examples are octopus, squid and cuttlefish. They are eaten in many cultures. Depending on the species, the arms and sometimes other body parts are prepared in various ways. Octopus must be boiled properly to rid it of slime, smell, and residual ink. Squid are popular in Japan. In Mediterranean countries and in English-speaking countries squid are often referred to as calamari.[17] Cuttlefish is less eaten than squid, though it is popular in Italy and dried, shredded cuttlefish is a snack food in East Asia. See: Squid (food)Octopus (food).
Crustaceans (from Latin crusta, meaning crust ) are invertebrates with segmented bodies protected by hard crusts (shells or exoskeletons), usually made of chitin and structured somewhat like a knight's armour. The shells do not grow, and must periodically be shed or moulted. Usually two legs or limbs issue from each segment. Most commercial crustaceans are decapods, that is they have ten legs, and have compound eyes set on stalks. Their shell turns pink or red when cooked.
Shrimp and prawns, are small, slender, stalk-eyed ten-legged crustaceans with long spiny rostrums. They are widespread, and can be found near the seafloor of most coasts and estuaries, as well as in rivers and lakes. They play important roles in the food chain. There are numerous species, and usually there is a species adapted to any particular habitat. Any small crustacean which resembles a shrimp tends to be called one.[18]See: shrimp (food), shrimp fishery, shrimp farming, freshwater prawn farming.
Crabs are stalk-eyed ten-legged crustaceans, usually walk sideways, and have grasping claws as their front pair of limbs. They have small abdomens, short antennae, and a short carapace that is wide and flat. Also usually included are king crabs and coconut crabs, even if these belongs to a different group of decapods than the true crabs. See: crab fisheries.
Clawed lobsters and spiny lobsters are stalk-eyed ten-legged crustaceans with long abdomens. The clawed lobster has large asymmetrical claws for its front pair of limbs, one for crushing and one for cutting (pictured). The spiny lobster lacks the large claws, but has a long, spiny antennae and a spiny carapace. Lobsters are larger than most shrimp or crabs. See: lobster fishing.
Krill resemble small shrimp, however they have external gills and more than ten legs (swimming plus feeding and grooming legs). They are found in oceans around the world where they filter feed in huge pelagic swarms.[21] Like shrimp, they are an important part of the marine food chain, converting phytoplankton into a form larger animals can consume. Each year, larger animals eat half the estimated biomass of krill (about 600 million tonnes).[21] Humans consume krill in Japan and Russia, but most of the krill harvest is used to make fish feed and for extracting oil. Krill oil contains omega-3 fatty acids, similarly to fish oil. See: Krill fishery.
Marine mammals form a diverse group of 128 species that rely on the ocean for their existence.[23] Whale meat is still harvested from legal, non-commercial hunts.[24] About one thousand long-finned pilot whales are still killed annually.[25] Japan has resumed hunting for whales, which they call "research whaling".[26] In modern Japan, two cuts of whale meat are usually distinguished: the belly meat and the more valued tail or fluke meat. Fluke meat can sell for $200 per kilogram, three times the price of belly meat.[27]Fin whales are particularly desired because they are thought to yield the best quality fluke meat.[28] In Taiji in Japan and parts of Scandinavia such as the Faroe Islands, dolphins are traditionally considered food, and are killed in harpoon or drive hunts.[29]Ringed seals are still an important food source for the people of Nunavut[30] and are also hunted and eaten in Alaska.[31] The meat of sea mammals can be high in mercury, and may pose health dangers to humans when consumed.[32] The FAO record only the reported numbers of aquatic mammals harvested, and not the tonnage. In 2010, they reported 2500 whales, 12,000 dolphins and 182,000 seals. See: marine mammals as food, whale meat, seal hunting.
Sea turtles have long been valued as food in many parts of the world. Fifth century BC Chinese texts describe sea turtles as exotic delicacies.[33] Sea turtles are caught worldwide, although in many countries it is illegal to hunt most species.[34] Many coastal communities around the world depend on sea turtles as a source of protein, often gathering sea turtle eggs, and keeping captured sea turtles alive on their backs until needed for consumption.[35] Most species of sea turtle are now endangered, and some are critically endangered.[36]
Echinoderms are headless invertebrates, found on the seafloor in all oceans and at all depths. They are not found in fresh water. They usually have a five-pointed radial symmetry, and move, breathe and perceive with their retractable tube feet. They are covered with a calcareous and spiky test or skin. The name echinoderm comes from the Greek ekhinos meaning hedgehog, and dermatos meaning skin. Echinoderms used for seafood include sea cucumbers, sea urchins, and occasionally starfish. Wild sea cucumbers are caught by divers and in China they are farmed commercially in artificial ponds.[37] The gonads of both male and female sea urchins, usually called sea urchin roe or corals,[38] are delicacies in many parts of the world.[39][40]
Jellyfish are soft and gelatinous, with a body shaped like an umbrella or bell which pulsates for locomotion. They have long, trailing tentacles with stings for capturing prey. They are found free-swimming in the water column in all oceans, and are occasionally found in freshwater. Jellyfish must be dried within hours to prevent spoiling. In Japan they are regarded as a delicacy. Traditional processing methods are carried out by a jellyfish master. This involve a 20 to 40-day multi-phase procedure which starts with removing the gonads and mucous membranes. The umbrella and oral arms are then treated with a mixture of table salt and alum, and compressed. Processing reduces liquefaction, odor, the growth of spoilage organisms, and makes the jellyfish drier and more acidic, producing a crisp and crunchy texture. Only scyphozoan jellyfish belonging to the order Rhizostomeae are harvested for food; about 12 of the approximately 85 species. Most of the harvest takes place in southeast Asia.[41][42][43]
Seaweed is a loose colloquial term which lacks a formal definition. Broadly, the term is applied to the larger, macroscopic forms of algae, as opposed to microalga. Examples of seaweed groups are the multicellular red, brown and green algae.[44] Edible seaweeds usually contain high amounts of fibre and, in contrast to terrestrial plants, contain a complete protein.[45] Seaweeds are used extensively as food in coastal cuisines around the world. Seaweed has been a part of diets in China, Japan, and Korea since prehistoric times.[46] Seaweed is also consumed in many traditional European societies, in Iceland and western Norway, the Atlantic coast of France, northern and western Ireland, Wales and some coastal parts of South West England,[47] as well as Nova Scotia and Newfoundland. See: edible seaweed, seaweed farming, aquaculture of giant kelp, laverbread.
Microphytes are microscopic organisms, and can be algal, bacterial or fungal. Microalgae are another type of aquatic plant, and includes species that can be consumed by humans and animals. Some species of aquatic bacteria can also be used as seafood, such as spirulina(pictured in tablet form), a type of cyanobacteria. See: culture of microalgae in hatcheries.
Live food fish are often transported in tanks at high expense for an international market that prefers its seafood killed immediately before it is cooked. Delivery of live fish without water is also being explored.[49] While some seafood restaurants keep live fish in aquaria for display purposes or cultural beliefs, the majority of live fish are kept for dining customers. The live food fish trade in Hong Kong, for example, is estimated to have driven imports of live food fish to more than 15,000 tonnes in 2000. Worldwide sales that year were estimated at US$400million, according to the World Resources Institute.[50]
If the cool chain has not been adhered to correctly, food products generally decay and become harmful before the validity date printed on the package. As the potential harm for a consumer when eating rotten fish is much larger than for example with dairy products, the U.S. Food and Drug Administration (FDA) has introduced regulation in the USA requiring the use of a time temperature indicator on certain fresh chilled seafood products.[51]
Because fresh fish is highly perishable, it must be eaten promptly or discarded; it can be kept for only a short time. In many countries, fresh fish are filleted and displayed for sale on a bed of crushed ice or refrigerated. Fresh fish is most commonly found near bodies of water, but the advent of refrigerated train and trucktransportation has made fresh fish more widely available inland.[52]
Long term preservation of fish is accomplished in a variety of ways. The oldest and still most widely used techniques are drying and salting. Desiccation (complete drying) is commonly used to preserve fish such as cod. Partial drying and salting are popular for the preservation of fish like herring and mackerel. Fish such as salmon, tuna, and herring are cooked and canned. Most fish are filleted before canning, but some small fish (e.g. sardines) are only decapitated and gutted before canning.[53]
Seafood is consumed all over the world; it provides the world's prime source of high-quality protein: 14–16% of the animal protein consumed worldwide; over one billion people rely on seafood as their primary source of animal protein.[54][55] Fish is among the most common food allergens.
Since 1960, annual global seafood consumption has more than doubled to over 20kg per capita. Among the top consumers are Korea (78.5kg per head), Norway (66.6kg) and Portugal (61.5kg).[56]
The UK Food Standards Agency recommends that at least two portions of seafood should be consumed each week, one of which should be oil-rich. There are over 100 different types of seafood available around the coast of the UK.
Oil-rich fish such as mackerel or herring are rich in long chain Omega-3 oils. These oils are found in every cell of the human body, and are required for human biological functions such as brain functionality.
Whitefish such as haddock and cod are very low in fat and calories which, combined with oily fish rich in Omega-3 such as mackerel, sardines, fresh tuna, salmon and trout, can help to protect against coronary heart disease, as well as helping to develop strong bones and teeth.
Shellfish are particularly rich in zinc, which is essential for healthy skin and muscles as well as fertility. Casanova reputedly ate 50 oysters a day.[57][58]
Texture and taste
Over 33,000 species of fish and many more marine invertebrate species have been identified.[59] Bromophenols, which are produced by marine algae, give marine animals an odor and taste that is absent from freshwater fish and invertebrates. Also, a chemical substance called dimethylsulfoniopropionate (DMSP) that is found in red and green algae is transferred into animals in the marine food chain. When broken down, dimethyl sulfide (DMS) is produced, and is often released during food preparation when fresh fish and shellfish are heated. In small quantities it creates a specific smell one associates with the ocean, but in larger quantities gives the impression of rotten seaweed and old fish.[60] Another molecule known as TMAO occurs in fishes and gives them a distinct smell. It also exists in freshwater species, but becomes more numerous in the cells of an animal the deeper it lives, so fish from the deeper parts of the ocean have a stronger taste than species that live in shallow water.[61] Eggs from seaweed contain sex pheromones called dictyopterenes, which are meant to attract the sperm. These pheromones are also found in edible seaweeds, which contributes to their aroma.[62]
Fish consumption has been associated with a decreased risk of dementia, lung cancer and stroke.[71][72][73] A 2020 umbrella review concluded that fish consumption reduces all-cause mortality, cancer, cardiovascular disease, stroke and other outcomes. The review suggested that two to four servings per week is generally safe.[74] However, two other recent umbrella reviews have found no statistically significant associations between fish consumption and cancer risks and have cautioned researchers when it comes to interpreting reported associations between fish consumption and cancer risks because the quality of evidence is very low.[75][76]
The parts of fish containing essential fats and micronutrients, often cited as primary health benefits of eating seafood, are frequently discarded in the developed world.[77]Micronutrients including calcium, potassium, selenium, zinc, and iodine are found in their highest concentrations in the head, intestines, bones, and scales.[78]
Government recommendations promote moderate consumption of fish. The US Food and Drug Administration recommends moderate (4 oz for children and 8–12 oz for adults, weekly) consumption of fish as part of a healthy and balanced diet.[79]The UK National Health Service gives similar advice, recommending at least 2 portions (about 10 oz) of fish weekly.[80] The Chinese National Health Commission recommends slightly more, advising 10–20 oz of fish weekly.[81]
Barracuda found in Florida are avoided due to a high risk of ciguatera. The same fish found in Belize presents a lesser risk due to the lower prevalence of ciguatera-causing dinoflagellates in the Caribbean. Thus, knowing a fish's origin and life history is essential to determining its health hazards.Organic and inorganic compounds including methylmercury, microplastics, and polychlorinated biphenyls (PCBs) can bioaccumulate to dangerous levels in apex predators like swordfish and marlin.
There are numerous factors to consider when evaluating health hazards in seafood. These concerns include marine toxins, microbes, foodborne illness, radionuclide contamination, and man-made pollutants.[77]Shellfish are among the more common food allergens.[82] Most of these dangers can be mitigated or avoided with accurate knowledge of when and where seafood is caught. However, consumers have limited access to relevant and actionable information in this regard and the seafood industry's systemic problems with mislabelling make decisions about what is safe even more fraught.[83]
Ciguatera fish poisoning (CFP) is an illness resulting from consuming toxins produced by dinoflagellates which bioaccumulate in the liver, roe, head, and intestines of reef fish.[84] It is the most common disease associated with seafood consumption and poses the greatest risk to consumers.[77] The population of plankton that produces these toxins varies significantly over time and location, as seen in red tides. Evaluating the risk of ciguatera in any given fish requires specific knowledge of its origin and life history, information that is often inaccurate or unavailable.[85] While ciguatera is relatively widespread compared to other seafood-related health hazards (up to 50,000 people suffer from ciguatera every year), mortality is very low.[86]
Scombroid food poisoning, is also a seafood illness. It is typically caused by eating fish high in histamine from being stored or processed improperly.[87]
Fish and shellfish have a natural tendency to concentrate inorganic and organic toxins and pollutants in their bodies, including methylmercury, a highly toxic organic compound of mercury, polychlorinated biphenyls (PCBs), and microplastics. Species of fish that are high on the food chain, such as shark, swordfish, king mackerel, albacore tuna, and tilefish contain higher concentrations of these bioaccumulates. This is because bioaccumulates are stored in the muscle tissues of fish, and when a predatory fish eats another fish, it assumes the entire body burden of bioaccumulates in the consumed fish. Thus species that are high on the food chain amass body burdens of bioaccumulates that can be ten times higher than the species they consume. This process is called biomagnification.[88]
Man-made disasters can cause localized hazards in seafood which may spread widely via piscine food chains. The first occurrence of widespread mercury poisoning in humans occurred this way in the 1950s in Minamata, Japan. Wastewater from a nearby chemical factory released methylmercury that accumulated in fish which were consumed by humans. Severe mercury poisoning is now known as Minamata disease.[89][77] The 2011 Fukushima Daiichi Nuclear Power Plant disaster and 1947 - 1991 Marshall Islands nuclear bomb testing led to dangerous radionuclide contamination of local sea life which, in the latter case, remained as of 2008.[90][77]
A widely cited study in JAMA which synthesized government and MEDLINE reports, and meta-analyses to evaluate risks from methylmercury, dioxins, and polychlorinated biphenyls to cardiovascular health and links between fish consumption and neurologic outcomes concluded that:
"The benefits of modest fish consumption (1-2 servings/wk) outweigh the risks among adults and, excepting a few selected fish species, among women of childbearing age. Avoidance of modest fish consumption due to confusion regarding risks and benefits could result in thousands of excess CHD [congenital heart disease] deaths annually and suboptimal neurodevelopment in children."[70]
Escolar is sometimes difficult to distinguish from tuna when cooked. Unlike tuna, escolar is associated with keriorrhea and severe cramping following consumption. In many restaurants, most fish labeled as tuna, white tuna, or albacore are mislabeled escolar.
Due to the wide array of options in the seafood marketplace, seafood is far more susceptible to mislabeling than terrestrial food.[77] There are more than 1,700 species of seafood in the United States' consumer marketplace, 80 - 90% of which are imported and less than 1% of which are tested for fraud.[92] However, more recent research into seafood imports and consumption patterns among consumers in the United States suggests that 35%-38% of seafood products are of domestic origin.[94] consumption suggests Estimates of mislabelled seafood in the United States range from 33% in general up to 86% for particular species.[92]
Byzantine supply chains, frequent bycatch, brand naming, species substitution, and inaccurate ecolabels all contribute to confusion for the consumer.[95] A 2013 study by Oceana found that one third of seafood sampled from the United States was incorrectly labeled.[92]Snapper and tuna were particularly susceptible to mislabelling, and seafood substitution was the most common type of fraud. Another type of mislabelling is short-weighting, where practices such as overglasing or soaking can misleadingly increase the apparent weight of the fish.[96] For supermarket shoppers, many seafood products are unrecognisable fillets. Without sophisticated DNA testing, there is no foolproof method to identify a fish species without their head, skin, and fins. This creates easy opportunities to substitute cheap products for expensive ones, a form of economic fraud.[97]
Beyond financial concerns, significant health risks arise from hidden pollutants and marine toxins in an already fraught marketplace. Seafood fraud has led to widespread keriorrhea due to mislabeled escolar, mercury poisoning from products marketed as safe for pregnant women, and hospitalisation and neurological damage due to mislabeled pufferfish.[93] For example, a 2014 study published in PLOS One found that 15% of MSC certified Patagonian toothfish originated from uncertified and mercury polluted fisheries. These fishery-stock substitutions had 100% more mercury than their genuine counterparts, "vastly exceeding" limits in Canada, New Zealand, and Australia.[98]
Research into population trends of various species of seafood is pointing to a global collapse of seafood species by 2048. Such a collapse would occur due to pollution and overfishing, threatening oceanic ecosystems, according to some researchers.[99]
A major international scientific study released in November 2006 in the journal Science found that about one-third of all fishing stocks worldwide have collapsed (with a collapse being defined as a decline to less than 10% of their maximum observed abundance), and that if current trends continue all fish stocks worldwide will collapse within fifty years.[100] In July 2009, Boris Worm of Dalhousie University, the author of the November 2006 study in Science, co-authored an update on the state of the world's fisheries with one of the original study's critics, Ray Hilborn of the University of Washington at Seattle. The new study found that through good fisheries management techniques even depleted fish stocks can be revived and made commercially viable again.[101] An analysis published in August 2020 indicates that seafood could theoretically increase sustainably by 36–74% by 2050 compared to current yields and that whether or not these production potentials are realised sustainablydepends on several factors "such as policy reforms, technological innovation, and the extent of future shifts in demand".[102][103]
The FAO State of World Fisheries and Aquaculture 2004 report estimates that in 2003, of the main fish stocks or groups of resources for which assessment information is available, "approximately one-quarter were overexploited, depleted or recovering from depletion (16%, 7% and 1% respectively) and needed rebuilding."[104]
The National Fisheries Institute, a trade advocacy group representing the United States seafood industry, disagree. They claim that currently observed declines in fish populations are due to natural fluctuations and that enhanced technologies will eventually alleviate whatever impact humanity is having on oceanic life.[105]
Pescatarianism was widespread in the early Christian Church, among both the clergy and laity.[111] In ancient and medieval times, the Catholic Church forbade the practice of eating meat, eggs and dairy products during Lent. Thomas Aquinas argued that these "afford greater pleasure as food [than fish], and greater nourishment to the human body, so that from their consumption there results in a greater surplus available for seminal matter, which when abundant becomes a great incentive to lust".[112] In the United States, the Catholic practice of abstaining from meat on Fridays during Lent has popularised the Friday fish fry,[113] and parishes often sponsor a fish fry during Lent.[114] In predominantly Roman Catholic areas, restaurants may adjust their menus during Lent by adding seafood items to the menu.[115]
Aquaculture, also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants. Aquaculture involves cultivating freshwater, brackish water, and saltwater populations under controlled or semi-natural conditions and can be contrasted with commercial fishing, which is the harvesting of wild fish. Aquaculture is also a practice used for restoring and rehabilitating marine and freshwater ecosystems. Mariculture, commonly known as marine farming, is aquaculture in seawater habitats and lagoons, as opposed to freshwater aquaculture. Pisciculture is a type of aquaculture that consists of fish farming to obtain fish products as food.
Mariculture, sometimes called marine farming or marine aquaculture, is a branch of aquaculture involving the cultivation of marine organisms for food and other animal products, in seawater. Subsets of it include, fish farms built on littoral waters, or in artificial tanks, ponds or raceways which are filled with seawater. An example of the latter is the farming of plankton and seaweed, shellfish like shrimp or oysters, and marine finfish, in saltwater ponds. Non-food products produced by mariculture include: fish meal, nutrient agar, jewellery, and cosmetics.
Shellfish, in colloquial and fisheries usage, are exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some are found in freshwater. In addition, a few species of land crabs are eaten, for example Cardisoma guanhumi in the Caribbean. Shellfish are among the most common food allergens.
Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life or, more commonly, the site where such enterprise takes place. Commercial fisheries include wild fisheries and fish farms, both in freshwater waterbodies and the oceans. About 500 million people worldwide are economically dependent on fisheries. 171 million tonnes of fish were produced in 2016, but overfishing is an increasing problem, causing declines in some populations.
The fishing industry includes any industry or activity that takes, cultures, processes, preserves, stores, transports, markets or sells fish or fish products. It is defined by the Food and Agriculture Organization as including recreational, subsistence and commercial fishing, as well as the related harvesting, processing, and marketing sectors. The commercial activity is aimed at the delivery of fish and other seafood products for human consumption or as input factors in other industrial processes. The livelihood of over 500 million people in developing countries depends directly or indirectly on fisheries and aquaculture.
Many species of fish are caught by humans and consumed as food in virtually all regions around the world. Fish has been an important dietary source of protein and other nutrients.
Fish meal, sometimes spelt fishmeal, is a commercial product made from whole wild-caught fish, bycatch, and fish by-products to feed farm animals, e.g., pigs, poultry, and farmed fish. Because it is calorically dense and cheap to produce, fishmeal has played a critical role in the growth of factory farms and the number of farm animals it is possible to breed and feed.
The environmental impact of fishing includes issues such as the availability of fish, overfishing, fisheries, and fisheries management; as well as the impact of industrial fishing on other elements of the environment, such as bycatch. These issues are part of marine conservation, and are addressed in fisheries science programs. According to a 2019 FAO report, global production of fish, crustaceans, molluscs and other aquatic animals has continued to grow and reached 172.6 million tonnes in 2017, with an increase of 4.1 percent compared with 2016. There is a growing gap between the supply of fish and demand, due in part to world population growth.
Sustainable seafood is seafood that is caught or farmed in ways that consider the long-term vitality of harvested species and the well-being of the oceans, as well as the livelihoods of fisheries-dependent communities. It was first promoted through the sustainable seafood movement which began in the 1990s. This operation highlights overfishing and environmentally destructive fishing methods. Through a number of initiatives, the movement has increased awareness and raised concerns over the way our seafood is obtained.
The Shellfish Association of Great Britain (SAGB) is a historic association that was founded as the Oyster Merchants' and Planters' Association in 1903, it was renamed the SAGB in 1969. They cover a wide range of topics within the shellfish industry, from trading to advice on nutritional standards and also the sustainability of the industry.
The presence of mercury in fish is a health concern for people who eat them, especially for women who are or may become pregnant, nursing mothers, and young children. Fish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organomercury compound. This element is known to bioaccumulate in humans, so bioaccumulation in seafood carries over into human populations, where it can result in mercury poisoning. Mercury is dangerous to both natural ecosystems and humans because it is a metal known to be highly toxic, especially due to its neurotoxic ability to damage the central nervous system.
Edible seaweed, or sea vegetables, are seaweeds that can be eaten and used for culinary purposes. They typically contain high amounts of fiber. They may belong to one of several groups of multicellular algae: the red algae, green algae, and brown algae. Seaweeds are also harvested or cultivated for the extraction of polysaccharides such as alginate, agar and carrageenan, gelatinous substances collectively known as hydrocolloids or phycocolloids. Hydrocolloids have attained commercial significance, especially in food production as food additives. The food industry exploits the gelling, water-retention, emulsifying and other physical properties of these hydrocolloids.
Fisheries are affected by climate change in many ways: marine aquatic ecosystems are being affected by rising ocean temperatures, ocean acidification and ocean deoxygenation, while freshwater ecosystems are being impacted by changes in water temperature, water flow, and fish habitat loss. These effects vary in the context of each fishery. Climate change is modifying fish distributions and the productivity of marine and freshwater species. Climate change is expected to lead to significant changes in the availability and trade of fish products. The geopolitical and economic consequences will be significant, especially for the countries most dependent on the sector. The biggest decreases in maximum catch potential can be expected in the tropics, mostly in the South Pacific regions.
Pescetarianism is a dietary practice in which seafood is the only source of meat in an otherwise vegetarian diet. The inclusion of other animal products, such as eggs and dairy, is optional. According to research conducted from 2017 to 2018, approximately 3% of adults worldwide are pescetarian.
The Blue Revolution refers to the significant growth and intensification of global aquaculture production—domestication and farming of fish, shellfish, and aquatic plants—from the middle of the 20th century to the present, particularly in underdeveloped countries. The peak and subsequent stagnation of capture fishery production in the late 1980s spurred technological innovation and improved efficiency for aquaculture production.
South Korea is a major center of aquaculture production, and the world's third largest producer of farmed algae as of 2020.
Shrimp and prawn are types of sea animals that are consumed worldwide. Although shrimp and prawns belong to different suborders of Decapoda, they are very similar in appearance and the terms are often used interchangeably in commercial farming and wild fisheries. A distinction is drawn in recent aquaculture literature, which increasingly uses the term "prawn" only for the marine forms of palaemonids and "shrimp" for the marine penaeids.
Saltwater fish, also called marine fish or sea fish, are fish that live in seawater. Saltwater fish can swim and live alone or in a large group called a school.
Fisheries law is an emerging and specialized area of law. Fisheries law is the study and analysis of different fisheries management approaches such as catch shares e.g. individual transferable quotas; TURFs; and others. The study of fisheries law is important in order to craft policy guidelines that maximize sustainability and legal enforcement. This specific legal area is rarely taught at law schools around the world, which leaves a vacuum of advocacy and research. Fisheries law also takes into account international treaties and industry norms in order to analyze fisheries management regulations. In addition, fisheries law includes access to justice for small-scale fisheries and coastal and aboriginal communities and labor issues such as child labor laws, employment law, and family law.
Blue foods, also known as aquatic foods, are plants and animals sourced from aquatic environments and are suitable for human consumption. More than 2500 species of marine and freshwater animals, aquatic plants, and algae have been identified as relevant to the human diet.
1 2 Total production, both wild and aquaculture, of seafood species groups in thousand tonnes, sourced from the data reported in the FAOFishStat database
↑ CITES (14 June 2006). "Appendices". Convention on International Trade in Endangered Species of Wild Flora and Fauna. Archived from the original(SHTML) on 3 February 2007. Retrieved 5 February 2007.
↑ Rogers-Bennett, Laura, "The Ecology of Strongylocentrotus franciscanus and Strongylocentrotus purpuratus" in John M. Lawrence, Edible sea urchins: biology and ecology, p. 410
↑ Smith, G.M. 1944. Marine Algae of the Monterey Peninsula, California. Stanford Univ., 2nd Edition.
↑ K.H. Wong; Peter C.K. Cheung (2000). "Nutritional evaluation of some subtropical red and green seaweeds: Part I – proximate composition, amino acid profiles and some physico-chemical properties". Food Chemistry. 71 (4): 475–482. doi:10.1016/S0308-8146(00)00175-8.
↑ N. Narain and Nunes, M.L. Marine Animal and Plant Products. In: Handbook of Meat, Poultry and Seafood Quality, L.M.L. Nollet and T. Boylston, eds. Blackwell Publishing 2007, p 247.
↑ Food and Agriculture Organization of the United Nations. 2016b. The State of World Fisheries and Aquaculture: Contributing to Food Security and Nutrition for AIL Rome: FAO.
↑ Hibbeln, Joseph R; Davis, John M; Steer, Colin; Emmett, Pauline; Rogers, Imogen; Williams, Cathy; Golding, Jean (February 2007). "Maternal seafood consumption in pregnancy and neurodevelopmental outcomes in childhood (ALSPAC study): an observational cohort study". The Lancet. 369 (9561): 578–585. doi:10.1016/s0140-6736(07)60277-3. ISSN0140-6736. PMID17307104. S2CID35798591.
↑ Fewtrell, Mary S; Abbott, Rebecca A; Kennedy, Kathy; Singhal, Atul; Morley, Ruth; Caine, Eleanor; Jamieson, Cherry; Cockburn, Forrester; Lucas, Alan (April 2004). "Randomized, double-blind trial of long-chain polyunsaturated fatty acid supplementation with fish oil and borage oil in preterm infants". The Journal of Pediatrics. 144 (4): 471–479. doi:10.1016/j.jpeds.2004.01.034. ISSN0022-3476. PMID15069395.
↑ Keum Hwa Lee, Hyo Jin Seong, Gaeun Kim, Gwang Hun Jeong, Jong Yeob Kim, Hyunbong Park, Eunyoung Jung, Andreas Kronbichler, Michael Eisenhut, Brendon Stubbs, Marco Solmi, Ai Koyanagi, Sung Hwi Hong, Elena Dragioti, Leandro Fórnias Machado de Rezende, Louis Jacob, NaNa Keum, Hans J van der Vliet, Eunyoung Cho, Nicola Veronese, Giuseppe Grosso, Shuji Ogino, Mingyang Song, Joaquim Radua, Sun Jae Jung, Trevor Thompson, Sarah E Jackson, Lee Smith, Lin Yang, Hans Oh, Eun Kyoung Choi, Jae Il Shin, Edward L Giovannucci, Gabriele Gamerith (2020). "Consumption of Fish and ω-3 Fatty Acids and Cancer Risk: An Umbrella Review of Meta-Analyses of Observational Studies". Advances in Nutrition. 11 (5): 1134–1149. doi:10.1093/advances/nmaa055. PMC7490175. PMID32488249.{{cite journal}}: CS1 maint: multiple names: authors list (link)
1 2 3 4 5 6 Hamada, Shingo; Wilk, Richard (2019). Seafood: Ocean to the Plate. New York: Routledge. pp.2, 8, 5–7, 9, 5, 9, 115 (in order of parenthetical appearance). ISBN9781138191860.
↑ Osiander, A. (1 October 2002). "Minamata: Pollution and the Struggle for Democracy in Postwar Japan, by Timothy S. George. Cambridge, MA and London: Harvard University Press, 2001, xxi + 385 pp., $45.00 (hardcover ISBN 0-674-00364-0), $25.00 (paperback ISBN 0-674-00785-9)". Social Science Japan Journal. 5 (2): 273–275. doi:10.1093/ssjj/05.2.273. ISSN1369-1465.
↑ Costello, Christopher; Cao, Ling; Gelcich, Stefan; Cisneros-Mata, Miguel Á; Free, Christopher M.; Froehlich, Halley E.; Golden, Christopher D.; Ishimura, Gakushi; Maier, Jason; Macadam-Somer, Ilan; Mangin, Tracey; Melnychuk, Michael C.; Miyahara, Masanori; de Moor, Carryn L.; Naylor, Rosamond; Nøstbakken, Linda; Ojea, Elena; O’Reilly, Erin; Parma, Ana M.; Plantinga, Andrew J.; Thilsted, Shakuntala H.; Lubchenco, Jane (19 August 2020). "The future of food from the sea". Nature. 588 (7836): 95–100. Bibcode:2020Natur.588...95C. doi:10.1038/s41586-020-2616-y. hdl:11093/1616. ISSN1476-4687. PMID32814903. S2CID221179212.
↑ "The Status of the Fishing Fleet". The State of World Fisheries and Aquaculture: 2004. Food and Agriculture Organization. Archived from the original on 19 January 2018. Retrieved 22 May 2020.
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