|An algal bloom near Coffin Bay has caused localised deaths of species including cockles, abalone, rock lobster and fish
on the reefs around Frenchman’s Bluff, and a small number of fish deaths on the shore near Farm Beach.
An algal bloom near Coffin Bay that resulted in fish and shellfish deaths has prompted an investigation by Primary Industries and Regions SA.
Testing of the waters around Coffin Bay to Port Drummond confirmed the presence of algae Karenia mikimotoi, a naturally occurring algae known to cause fish kills around the world.
According to PIRSA, the algae does not pose issues to human health.
PIRSA fisheries and aquaculture executive director Professor Mehdi Doroudi said tests conducted on abalone and oyster samples to rule out the presence of known infectious marine diseases had come back negative.
He said these types of blooms happened when environmental conditions were favourable.
“In this instance, dodge tides, high local water temperatures and the upwelling of nutrients from deeper waters, culminated in late February to make this particular algae increase in numbers, creating a bloom.”
He said it caused localised deaths of species including abalone, cockles, rock lobster and fish on the reefs around Frenchman’s Bluff, and a small number of fish deaths on the shore near Farm Beach.
“Testing of water and marine species occurred as soon as the bloom was reported.
“However, we have not had to close any areas or beaches as a result of the bloom because infectious disease and biotoxins are not present.
“PIRSA has been working closely with the fishing and aquaculture industry bodies to monitor the bloom’s density and movement.”
Professor Doroudi said the algal bloom was not affecting oyster leases in Coffin Bay, but if the situation changed lease holders had the option to move their oysters to alternative lease areas.
“Growers are encouraged to speak with their South Australian Oyster Growers Association Bay Representative.”
South Australian Oyster Growers Association president Jill Coates said such a bloom was unusual and there had not been one in the area for almost 20 years.
According to SA Health, the species of algae involved in the bloom does not pose a human health risk, and live, healthy fish caught in the area are safe to consume.
However, people should not eat any fish found dead along the shoreline or in the water because of the normal risk of spoilage.
If you find large scale fish deaths in the region, report it to the 24-hour Fishwatch line on 1800 065 522. – Port Lincoln Times.
|The slaughter of fish in the lagoon continues. Daily maintenance of the western beaches agents
collect corpses by ten. Over 7000 in fifteen days stranded on the sand.
Analysis of bathing waters are reassuring . No abnormalities were detected. On March 18 last, the city of St. Paul has also lifted the ban which affected the beaches of the West after the first discoveries of corpses.
However, if men are, for the moment, out of danger mortality continues fish. Every morning, officers in charge of the maintenance of bathing collect dozens of scholarships, parrots, red, Capuchins, stonefish and surgeons …
Nothing now opposed to plunge into the Indian Ocean, however, Sunday morning, municipal employees Saint Paul Trois-basins and Saint-Leu still recorded 250 fish.
Do not touch dead fish
Pending the results of launched by the Marine Nature Reserve bacteriological studies, observers are unarmed. They can only pick up the dead and wait. They advise beach users not to touch the corpses, of course, do not eat, but not bury them. It is preferable to leave them visible so that they are collected by municipal services to prevent the epidemic seems to decimate continues to spread.
The final results of analyzes of dead fish is highly anticipated. For now, it is recommended to be cautious while enjoying the beaches and bathing waters safely. – Reunion. [Translated]
Hundreds of dead fish are found floating on Marunda Beach, Cilincing, North Jakarta. Such a thing is complained by local fishermen who suspect those fish dead because of the wastes polluting the water. Since last Monday (3/24), those dead fish got dragged to the shore until to Marunda coastal area.
Chief of Marunda Coastal Fishermen, Al-Alam Aslik (62), suspected those fish dead because of wastes from households as well as big companies around the location, which flowing from several rivers and canal that estuary to Marunda waters. “We do not know where the wastes come from, but around here there are industrial areas like KBN, Marunda Centre, et cetera,” he told, Thursday (3/27).
According to Aslik, his party has reported this matter to related unit. As a matter of fact, they even had sent sample of seawater as requested by North Jakarta Fisheries, Poultry, and Maritime Sub-Department. But until now, there is no response.
Responding this matter, Head of North Jakarta Fisheries, Poultry, and Maritime Sub-Department, Liliek Litasari, admitted that she has not received information about dead fish on Marunda Beach. However, she said that there is nothing odd about alleged pollution on Marunda Beach.
“It (Marunda Beach) is estuary of rivers which water flows there. Besides, there are also big companies around there. So, if there were wastes, it’s possible. We will check it to the location,” she stated.
Meanwhile, North Jakarta Mayor, Heru Budi Hartono, uttered that pollution on coastal area like Marunda might be caused by waste comprehensive factor from rivers as well as contra flow from the sea. Because of that, he will conduct investigation regarding indication and allegation of factories near the location throwing wastes to the waters.
“Indeed there is allegation and we must increase surveillance. After this, I will coordinate with (North Jakarta) Fisheries, Poultry, and Maritime Sub-Department to check the matter directly,” he finished. – Berita Jakarta.
Around 7,000 chickens infected with Avian Influenza, commonly known as bird flu, were culled at a government poultry farm in Jessore Thursday night. District Livestock Officer Abdur Razzak said they had informed the Deputy Commissioner and Superintendent of Police of Jessore after several birds at the farm died of the flu on Mar 24.
Chickens, eggs, feed and medicines had been first tested in the farm laboratory. Some of the dead birds were later sent to the Central Disease Investigation Lab in Dhaka for more elaborate testing, he said. A report confirming avian influenza was received Wednesday, prompting the farm authorities to kill 6,868 chickens and destroy 1,882 eggs, 1,300 kg of feed and 19 kg of vitamins Thursday, according to a news agency. – The Financial Express.
|Fish farmers were separating fish from the pond died suddenly, Wednesday (26/03/2014).
Tribun Pontianak / TRY Juliansyah
Farmers pond fish, they complained the deaths of thousands of fish suddenly at River Mempawah , District Mempawah downstream.
Allegedly, the fish experience stress and disease at the same time due to contamination due to climate change, from dry to wet.
“This incident since Tuesday night. That Bang, we are tired vigil until midnight, but many who died suddenly. Water was brown,” said Syafrani (44) farmers cages, Wednesday (03/26/2014).
Syafrani said, the incident began at 18:00 pm, and began seriously before midnight.
According to him, these events are sudden and unexpected, so he has not been preparing preventive measures.
“The first one is attacked Thanks to the Cape region and according to the information due to changes in the river water,” he said.
According to him, the first symptom is the fish to the surface, like water for oxygen. Then not long, the fish is weak and eventually die.
He considered, the possibility has been increasingly polluted river water from upstream rivers, and pollution can be from many things. One of them heavy rainfall could also allow carry toxins from upstream to River Mempawah. – Tribun News. [Translated]