The Netherlands now join Norway in the effort to save the European eel Anguilla anguilla from extinction.

Yesterday, the Dutch government announced a two-month long ban on eel fishing that will commence on October 1 this year, followed from 2010 with a yearly three-month prohibition from September. In 2012, the new regulation will be reviewed and its effectiveness assessed.

“I realise this is a very big sacrifice for eel fishers, but ultimately it is also in the interests of the industry that eel numbers are allowed to recover,” Agriculture and Environment Minister Gerda Verburg said in a statement.

Before the regulation can be put into action it will however require the approval of the European Commission. The commission has already rejected a Dutch proposal to enlist the aid of eel fishermen to help boost the eel population by releasing 157 tons of mature, caught eel close to the species spawning waters in the Sargasso Sea.

“The (initial) plan would have offered guarantees for the recovery of the eel population,” the professional fishers’ federation Combinatie van Beroepsvissers said in a statement, describing the new measure as “incomprehensible, unreasonable and unacceptable”.

Eel is a delicacy in the Netherlands and roughly one thousand tons of eel are caught in Dutch waters every year. The Dutch government have designated 700,000 Euros (989,800 USD) to aid the estimated 240 small fishing businesses affected by the eel ban.

Norwegian fisheries regulators have banned all fishing of the critically endangered European eel starting in 2010 and cut 2009 catch quotas by 80 percent. The Norwegian Ministry of Fisheries also has announced that all recreational fishing of European eels shall stop on July 1st.

The European eel (Anguilla anguilla) is listed as critically endangered in Norway and on the IUCN Red List of Threatened Species. As early as 1999, the International Council for the Exploration of the Seas (ICES) warned fishery authorities about how the European eel stock was outside safe biological limits and that the fishery was unsustainable.

”The Minister of Fisheries is making an important, and the only right choice, and is showing international leadership in fisheries management,” said WWF-Norway CEO Rasmus Hansson in a response to the new regulation. “Norway’s Fisheries Minister, Helga Pedersen, has used every occasion to point out that Norway is the best in the world on fisheries management, and by making bold moves like this they have probably earned the title.”

WWF now hopes that the Norwegian decision will influence the European Union and its member states to do their part in protecting the European eel. As of today, eel fishing is allowed within the EU despite the grave condition of the European stock.

A moray eel species native to warm tropical waters have been caught in the considerably colder waters found off the coast of Cornwall, UK. (picture here)

After catching the 4 feet (120 cm) long fish, West Penwith fishermen brought it to the Newlyn Fish Market auction where it was purchased by fish dealer John Payne of Marisco Fish in Penzance.

”I thought it shouldn’t be there, realised it was rare and it shouldn’t be swimming in these waters so I decided to buy it. It is a one off and first of its kind found in these waters”, said Payne who plans to stuff the eel and keep it in his shop.

Rory Goodall of Cornwall Wildlife Trust has never heard of a tropical moray eel being caught this far north before. “They are not rare in the Mediterranean but I have never heard of them being seen here so it’s possible that they have never been caught in the British waters before”, he said.

Moray eel of the species Gymnothorax meleagris.
Copyright www.jjphoto.dk.

According to the journal Surgery, a 50 cm (20 in) eel was removed from a man’s rectum at the Kwong Wah Hospital in Kowloon, Hong Kong.

The 50-year old man was admitted to the Accident and Emergency Department complaining about abdominal pain.

European Eel – Picture by Ron Offermans; GNU

Doctors diagnosed him with peritonitis, inflammation of the peritoneum*, and did an x-ray to find out the underlying cause. Interestingly enough, what they saw on the x-ray was an eel stuck inside the man’s rectum.

The eel was still alive and biting the patient’s splenic flexure, which is a sharp bend located between the transverse and the descending colon. Doctors also found a 3 cm perforation over the anterior wall of the rectum.

“On further questioning,” says the paper, “the patient admitted an eel was inserted into the rectum in an attempt to relieve constipation. This may be related to a bizarre healthcare belief, inadvertent sexual behaviour, or criminal assault. However, the true reason may never be known.”

The patient was released from hospital a week later. We have been unable to find any information about what happened to the eel.

* The peritoneum is a serous membrane that forms the lining of the abdominal cavity or the coelom.

Japanese eel (Anguilla japonica) larvae have amazing buoyancy compared to other oceanic plankton, and the reason may be a type of gelatinous goo contained within the body.

When researchers from the University of Tokyo measured the specific gravity of Japanese eel larvae, they found it to be as low as 1.019, rising to 1.043 – showing the larvae to be potentially lighter than seawater itself. (Sea water has an average specific gravity of 1.024.)

When they checked other marine creatures for comparison, such as juvenile jellyfish and the sea snail Hydromyles, their specific gravity turned out range from 1.020 to 1.425. Of 26 plankton creatures tested, the Japanese eel larva was the lightest.

The food consumed by Japanese eel larvae and many other planktons tend to be found in the greatest abundance really close to the water’s surface where there is plenty of light. The low specific gravity may therefore increase the survival rate of Japanese eels by making it easier for them to find a lot of things to eat.

So, why does the Japanese eel float so well? According the Japanese study, the answer may rest in gelatinous goo – or more specifically in a matrix of transparent gelatinous glycosamino-glycans. Controlled by osmoregulation through the chloride cells that cover the body of a Japanese eel larva, this marvellous adaptation makes it possible for the larva to stay close to the surface. Researchers have also suggested that it might help the larva to stay away from predators.

For more information, see the paper: Tsukamoto K, Yamada Y, Okamura A, Kaneko T, Tanaka H, Miller MJ, Horie N, Mikawa N, Utoh, T and S Tanaka (2009) – Positive buoyancy in eel leptocephali: an adaptation for life in the ocean surface layer. Marine Biology, vol. 156, no. 5. pp. 835-846.

A group of scientists from the Catalyst One expedition has discovered three previously unknown coral reefs 35 miles of the coast of Florida. The coral reefs consist mainly of Lophelia coral and are located at a depth of 450 metres (1475 feet).

Lophelia pertusa is a cold-water coral famous for its lack of zooxanthellae. The well known coral reefs found in warm, shallow waters – such as the Great Barrier Reef – consist of reef building corals that utilize energy from the sun by forming symbiotic relationship with photosynthesising algae. Lophelia pertusa on the other hand lives at great depths where there isn’t enough sunlight to sustain photosynthesising creatures, and survives by feeding on plankton.

The deep-sea reef habitat formed by Lophelia pertusa is important for a long row of deep water species, such as lanternfish, hatchetfish, conger eels and various molluscs, amphipods, and brittle stars. The reefs that we see today are extremely old, since Lophelia reefs typically grow no more than 1 mm per year. Unfortunately, these deep reefs are today being harmed by trawling and oil extraction.

The Catalyst One expedition will submit its newly acquired information to the South Atlantic Fisheries Management Council to provide further data for the proposed Deep Coral Habitat Area of Particular Concern (HAPC).

The Catalyst One expedition is a collaboration between the Waitt Institute for Discovery, the Harbor Branch Oceanographic Institute at Florida Atlantic University, and Woods Hole Oceanographic Institute. It combines the scientific expertise of Harbor Branch’s senior research professor, John Reed, with Woods Hole’s high-tech operations skills and Waitt Institute’s modern autonomous underwater vehicles (AUVs).

In order to reach these great depths and efficiently explore substantial areas, the expedition used REMUS 6000 AUV vehicles capable of carrying two kinds of sonar and a camera. With this type of equipment, each mission can last for up to 18 hours and provides the researchers with mosaic pictures of the bottom, pictures that can then be pieced together to form a detailed, high-definition map.

“Rarely do scientific expeditions produce solid results this quickly,” says Dr Shirley Pomponi, executive director of Harbor Branch. “This is a big win for the resource managers tasked with protecting these reefs and proof that cutting edge technology combined with the seamless teamwork of the three organisations involved in Catalyst One can accelerate the pace of discovery.”

You can find more information about the Catalyst program at the Waitt Institute for Discovery.

http://waittinstitute.org/wid/catalyst/

http://waittinstitute.org/wid/news/catalyst1.html

In May this year, hundreds of Asian swamp eels were discovered in and around Silver Lake in historic Gibbsboro, New Jersey. This was the first finding in New Jersey, Asian swamp eelbut not the first finding in the United States. Unlike Florida, Georgia, and Hawaii – the three other U.S. states where this species have been discovered – New Jersey is however subjected to harsh winters and a breeding population of Asian swamp eels in New Jersey confirms the suspicion that this Asian invader has no problem adjusting to the
chilly climate of northern North America.

The Asian swamp eels were found by a local college student checking on frogs and turtles in the Silver Lake. As he spotted snake-like heads peeking from the water, he decided to photograph them and post the pictures online. This lead to the “snakes” being identified as Asian swamp eels, Monopterus albus, and prompted a call to the local authorities.

In its native environment in Asia and Australia, the swamp eel Monopterus albus inhabits gentle hill streams, estuaries and lowland wetlands, and it is a common species in rice paddies. It has developed a long row of traits that makes it an apt survivor in many different kinds of environments. Unfortunately, these traits also make it the “perfect” invasive species and biologists fear that the Asian swamp eel may wreck havoc with existing North American ecosystems, especially if the predatory species of these systems prefer to target familiar prey rather than catching the newcomers.

– The Asian swamp eel can survive long periods of drought by burrowing in moist earth, and can therefore take advantage of seasonally appearing, short-lived bodies of water.

– If its home becomes unsuitable, e.g. because of drought, this eel simply crawls ashore and make its way to a more suitable home by slithering over land, just like a snake. This makes it hard to eradicate from bodies of water using poison or similar; there is always the risk of at least two specimens getting away over land and forming a new breeding colony in nearby waters.

– The Asian swamp eel can tolerate a wide range of oxygen levels in the water since it is capable of absorbing oxygen from the air above the surface through its skin. This skill doesn’t only come in handy in oxygen depleted waters; it is also what makes it possible for the fish to travel impressive distances over land.

– This eel prefers freshwater habitats, but can tolerate brackish and saline conditions, which increases its chances of always finding a suitable home.

– It eats all sorts of prey, not only fish, crustaceans, amphibians, and other aquatic animals, but detritus (decaying organic matter) as well. Highly specialized feeders have a much harder time adjusting to new habitats and are therefore less likely to become problematic invasive species.

– This eel is a protandrous hermaphrodite, which means that it can change its sex. All specimens are born male, but can turn into females if necessary. This means that if an aquarist releases two male specimens into a lake, one of them can turn into a female to make reproduction possible.

In Georgia, the first specimens of Asian swamp eel was discovered in 1994, and three years later eels were found in Florida as well. The Hawaiian history of combating swamp eels is much longer as the first specimens are believed to have been released in Hawaiian waters about 100 years ago. In Georgia and New Jersey, biologists blame aquarists of having caused the situation by releasing their pets into the wild. In Florida and Hawaii however, Asian food markets and fish-farmers are considered more likely sources. Asian swamp eels are typically sold fresh in food markets and can be kept alive for long periods of time as long as their skin is kept moist.

New Jersey authorities are now focusing on containing the creatures while trying to figure out a way of annihilating them. “We’re not panicking yet,” says Lisa Barno, chief of the New Jersey Bureau of Freshwater Fisheries. “It’s more that it’s just an invasive species we’d rather not have. We’re still documenting the true extent of the problem, but right now it seems to be fairly contained.” One of the immediate goals is to prevent an expansion downstream to the Cooper River and a watershed leading to the Delaware River. Since May, only one Asian swamp eel has been discovered outside the Silver Lake.

A swedish documentary film crew claims to have caught images of a famous swedish sea monster on film. The beast is called “storsjöodjuret” which translates into “the monster of the big lake”. Storsjön is the name of the lake in which it supposedly lives. The monster have been sighted for a very long time and is very bellowed by the people who lives by the lake. It has been used to promote the area and have become a symbol for the area in much the same way Nessie is a symbol for Loch Ness.

The team have capture the picture with submerged cameras placed on a small island and you can follow the cameras online here. The film apparently show a large creature generating body heat and since there are no similar large sea creatures in Sweden except for the wells catfish which normally isn’t found this far north they believe the film shows the lake monster.

The team currently have six cameras but are going to place 24 more cameras next year and a NBC is going to make about the lake monster and their work this fall.

If you asked me the video is far from conclusive and very blurry but it is still better than many other videos like this so I decided to post it here and allow you to make up your own mind about what it depicts

The clip is from Swedish television

Transcript if dialog:
TITLE: Sweden’s Legendary Great Lake Monster (Storsjödjuret) has been caught on Film

ANNOUNCER: .6 constantly monitoring submerged cameras have captured poor images of the Storsjöodjuret, and an American TV company is on its way to depict the hunt for it.

VOICE OVER: This is supposedly the first moving images ever caught of the Great Lake Monster (Storsjödjuret) taken by an underwater camera . The red is representing heat. At least the group trying to disciver the lake monster want to believe that the swedish Loch Ness is captured on film. A special monitoring station have been built in Svenstavik.

SUSANNE KINDSTRÖM (on the team) It is clear that what have been caught on film is alive and contain cells as the equipment shows red (heat) So, is it a sea snake or a part of the lake monster on might wonder. As we’ve just discovered.

INTERVIEWER: It can’t be a piece of wood, or something else..?

SUSANNE KINDSTRÖM: That’s NO piece of wood, that I can see! Not with that movement pattern

VOICE OVER: This is supposed to be the back fin of the lake monster, the camera supposedly indicates heat on this video as well [Shown on video is a BLUE rectangle] Since the project Storsjöodjuret began this spring [2008], the interest for it has been huge – most of all from abroad. The american TV-company NBC is said to be making a film about the lake mosnter this fall. Next summer, they (the lake monster team) are going to increase from 6 to 30 cameras. It is on this small island the cameras are placed today.

INTERVIEWER: But.. do you believe you will ever get Storsjöodjuret on film?

KURT JONSSON (project Storsjöodjuret): I believe so. And I am also convinced that the technology will also be able to….(help) . in 15 or 20 years, you will be able to search any lake. From space or with unmanned vehicles. Technology goes forward..

INTERVIEWER: So this won’t end with it being (just) a piece of wood?

KURT JONSSON: No, I don’t think so. Something will turn up, yes.