In most cases, large die-offs of dolphins and manatees were not found to be caused by a recognizable red tide bloom. However, when tested for toxins all of them tested positive for large amounts of breve toxins. This positive testing could have been from consuming fish that were infected such as baitfish. “Although this event did not coincide with an identifiable K. brevis bloom, breve toxins were found in all of the dolphins tested. Baitfish, Menhaden (Brevoortia sp.), containing high concentrations of breve toxins were the most common prey identifiable in dolphin stomach contents, revealing the source of the breve toxins” (Effects of Florida’s).
Swimming is usually safe, but skin irritation and burning is possible in areas of high concentration of red tide. 1972: A red tide was caused in New England by a toxic dinoflagellate Alexandrium (Gonyaulax) tamarense. The red tides caused by the dinoflagellate Gonyaulax are serious because this organism produces saxitoxin and gonyautoxins which accumulate in shellfish and if ingested may lead to paralytic shellfish poisoning (PSP) and can lead to death 1976: The first PSP case in Sabah, Malaysian Borneo where 202 victims were reported to be suffering and 7 deaths 2005:
This occurs because excess nutrients can fuel the growth of algae blooms that block sunlight from reaching underwater grasses and, during decomposition, rob the water of oxygen that plants and animals need to survive. Certain species of algae that are common in bodies of water plagued by eutrophication can also contaminate shellfish. When consumed by humans, these diseased aquatic invertebrate cause paralytic shellfish poisoning: a potentially fatal disease. Unfortunately, though there are many drawbacks and negative effects on the water quality in the Bay, no real benefits are found in the water when agricultural pollution is present. The most destructive components of agricultural pollution are livestock manure, poultry litter, and chemical fertilizers.
The oyster hatcheries are affected because the baby oysters, or larvae, need calcium carbonate to build their shells, but it is replaced by the emitted carbon dioxide. The pH, or calcium carbonate will have gone down by 50% by mid century, according to the article, “Are Oysters Doomed?” The larvae dissolve in acidic water because they don’t have the nutrients to make their shells. If the oyster hatcheries don’t have the larvae to give to the oyster farms, then they can’t support the industry which is very large in Washington. Infact, the video Acidifying Water Takes Toll On Northwest Shellfish, says that the oyster industry supports 3,200 jobs in Washington state and brings in $2.7 million a year
Some of the most common causes of food poisoning are related to raw or undercooked meat. This includes meats and chicken, fish and other seafood, and even luncheon meats that are not properly refrigerated. Unpasteurized dairy products such as milk, cheese, and dairy drinks are also common culprits. Surprisingly, even foods which are supposed to be quite healthy can lead to sickness if not properly prepped.
Dr. Marshall Westwood had a meal of puffer fish and rice for dinner in Indonesia on his recent trip. Within an hour, the numbness starting from his lips and tongues quickly spread out through his face and neck, and he had pains in stomach and throat with symptoms of severe nausea and vomiting. Dr. Westwood called a local hospital, for he was feared of a “bad fish” food poisoning. He told his condition and signs to hospital staff but it were impossible to speak due to the numbness of lips and face.
Examples of negative local practices are the usage of poison/explosives and overfishing. Overfishing as the name suggests, is fishing a certain fish to an excess amount, decimating the population. This could put multiple organisms’ populations at risk and populations may possibly go extinct. Another practice that negatively impacts the ocean is the usage of poison and explosives. Obviously, the poison that is used in fishing (mainly cyanide) is harmful for the ocean because it may poison other fish over the years.
If the fish are not healthy, that can adversely affect people. People could eat contaminated fish, or people cannot sell the fish because they are contaminated. Some fish may die from the pollution, leading to less fish for catching. Lower populations of fish and other marine life can also cause an imbalance in the food chain. Predators can also be harmed
Contamination in Puerto Rican Beaches As everyone knows, Puerto Rico is a tropical beauty with ravishing coastlines, enchanting flora and unique creatures. Locals are fortunate enough to call this divine paradise, “home”. Having accessibility to all these wonders, it comes as no surprise that a large percentage of Puerto Ricans luxuriate in the beaches and wildlife the island has to offer. The heart of the Caribbean and the ultimate tropical utopia, Puerto Rico is an Eden worthy of protection, care and nourishment, yet the case seems to be the opposite.
The algae washes up on shores and destroy the beautiful of the beaches. This also has a side effect on the economy. A nuclear power plant had to be shut down from the algae problem which has cost them hundreds of thousands of dollars per day.
Firstly, they will kill fish which is quite in opposition of attraction for tourists. Also, as they get food, they force beloved species to decline into near extinction such as the trout. A third example is that when a sea lamprey kills its prey, they take away that fish from commercial use. Sea Lamprey has no sustenance for marine
Toxic shock syndrome toxin causes rash, diarrhea, and shock in humans. The last virulent factor is the alpha toxin. This makes holes in the host cell membrane. S. aureus causes a number of medical conditions and is not rare or uncommon to the human population or medical knowledge. (Nester, Allen & Salm, 2012, pgs.