Dwarf sea horse

There are tens of thousands of dwarf seahorses trying to survive in the oil infested Gulf of Mexico, and a researcher from the University of British Columbia is saying that their difficulties serves as a warning to not let BP to expand its operations to the West Coast.

Now the dwarf seahorse is at great risk of becoming extinct after the BP mess happened this past April, and it isn’t being helped any by the non-friendly methods for clearing up the mess, commented the director of the international project Seahorse conservation group, Amanda Vincent.

“We’re concerned that some lessons be learned for Canada from this fiasco,” Vincent commented during a press conference this past Tuesday.

“If we were to have an oil spill on this coast, either from tanker traffic or from drilling — if the moratorium were lifted — then we would also see them and everything else in their habitats severely affected.”

While a provincial, as well as federal, moratorium is in place against any kind of oil exploration on the north coast of British Columbia is in effect, the First Nations and other environmental organizations have cautioned of the dangers of putting in an oil pipeline.

And with what happened in the Gulf of Mexico who could blame them? We really need to step back, and force the big oil companies to take extra precautionary measures, before allowing to operate anywhere else in the world…

Many people are happy, and patting themselves on the back after finding the first baby sea horse at one of the leading breeding colonies in Dorset.

The tiny fry, what you call a tiny baby seahorse, discovered at Studland Bay is 4 centimeters in length.

Displayed sea horse is not from the dorset population.

The Seahorse Trust has claimed that the seahorses are an endangered animal, as many boats and mooring chains are taking big hunks and tearing up the seabed.

The Marine Management Organization, a government entity, has said that although research has been ongoing into the subject, there was no conclusive evidence that mooring chains are a threat to seahorses.

The Seahorse Trust is pushing for the protection of these amazing animals under the Wildlife and Countryside Act, which came into existence in 2008.

“The trust and its volunteer divers have seen adults, pregnant males and juveniles on the site before but never a baby (fry),” a representative of the Seahorse Trust has commented.
“It does not mean they are thriving, quite the reverse, they appear to be hanging on in there against the odds of hundreds of boats dropping anchors and mooring chains ripping up the seabed, destroying their fragile home.”

The main goal of the Seahorse Trust is to get those nasty moorings replaced with more environmentally sound ones which do not damage seagrass, and for boat users to switch to these new devices.

Hopefully the discovery of this new baby seahorse will prompt some more interest in the issue, and something will be done to help protect these magnificent sea creatures.

Scuba divers are threatening the survival of the infinitesimal Pygmy seahorses found on the coral reefs around Sabah’s east coast islands in Malaysia.

Sabah, a Malaysian state situated in the northern part of the island of Borneo, is home to two species of pygmy seahorse Hippocampus bargibanti and Hippocampus denise. Both species are fairly widespread in South East Asia and are found on coral slopes from southern Japan and Indonesia to northern Australia and New Caledonia.

Barely five years ago, the pygmy seahorses were discovered at popular Sabah divespots, such as Bodgaya, Mabul and Pulau Sipadan, and since then dive operators have brought large numbers of scuba divers to see the tiny creatures. In some of the most popular spots, over 100 divers can be seen exploring the reef simultaneously and this puts a lot of stress on the reef and its inhabitants.

Photographing divers have for instance been spotted breaking off sea fans – the natural habitat of the pygmy seahorses – and moved them just to get a better angle for their pictures.

In an effort to improve the conditions for the seahorses, marine biologist Yeong Yee Ling of the Universiti Malaysia Terengganu has held a two-day seminar about how to behave when scuba diving in seahorse habitat. The seminar was attended by 57 participants, including representatives from most of the 15 dive operators based in Semporna. Sabah Parks, the conservation-based statutory responsible for conserving the scenic, scientific and historic heritage of the state of Sabah, was also involved in the event.

“Our hope is that the discussions from the seminar would eventually be synthesised into a code of conduct for divers. We are thankful the dive operators have been supportive of this effort,” said Yeong, who has been researching pygmy seahorses for the past three years.

The seminar was funded by the Shell Malaysia’s Sustainable and Development Grant.

A 100 metre by 100 metre* anchor-free zone will be established in Studland Bay in Dorset bay to protect the largest seahorse breeding colony in the United Kingdom. To prevent boaters from accidently anchoring within the zone, it will be marked out by six large buoys fitted with flags on top.

“There might be the odd individual who out of spite or grievance will chose to go on there but it will be well marked so if anyone does it will be intentional”, says Natural England maritime advisor Richard Caldow.

The area will be patrolled by wardens and a map of boating activity will be constructed based on their observations during the busy summer season. Marine experts will then compare data from the anchor-free zone to a control zone where boats can anchor.

“I’m not interested in the names of boats”, Caldow says. “I want to know how many there are and where they are going, particularly the level of boating in the voluntary no anchor zone which will hopefully be none.”

* 109 x 109 yards

The Top 10 list of new species from 2008 has now been compiled by the ASU institute and an international committee of taxonomists. Last year, thousands of new species were described by science, many of them native to hard-to-access regions of our planet, such as remote tropical areas or deep sea habitats, but two of the species on the list actually hail from much less exotic locations: Cardiff and a bottle of hairspray.

“Most people do not realize just how incomplete our knowledge of Earth’s species is,” said Quentin Wheeler, director of the International Institute for Species Exploration at Arizona State University, which announced the top 10 new species list. “We are surrounded by such an exuberance of species diversity that we too often take it for granted“.

These are the selected few that made it all the way to the ASU Top 10:

1.) A palm with no close relatives in the neighbourhood

Name: Tahina spectabilis
Common Name: Tahina Palm

This plant produces truly spectacular inflorescence with numerous flowers. After fruiting, the palm dies and collapses. Strangely enough, the genus Tahina is not closely related to any of the other 170+ palm species found on Madagascar. Its closest relatives are instead found in Afghanistan, Thailand, Vietnam and China.

Soon after the publication of the species, seeds were disseminated throughout the palm grower community, raising money for its conservation by the local villagers.

2.) The world’s longest known living insect

Name: Phobaeticus chani
Common Name: This insect has no common name in English. Perhaps Chani’s stick insect would be a suitable English common name? Do any of the readers of this blog know if this species has a common name in Malaysia?

With a body length of 35.6 cm (14 inches) and an overall length of 56.7 cm (22.3 inches), Phobaeticus chani is the world’s longest known now living insect. Once upon a time, insects grew much larger than this, but none of those gigantic insects have survived into our time.

3.) The world’s smallest seahorse

Name: Hippocampus satomiae
Common Name: Satomi’s Pygmy Seahorse

This is the smallest known seahorse in the world. It has a standard length of no more than 13.8mm (0.54 inches) and an approximate height of 11.5mm (0.45 inches).

4.) The world’s smallest snake

Name: Leptotyphlops carlae
Common Name: Barbados Threadsnake

This is the world’s smallest snake with a total length of 104 mm (4.1 inches).

5.) A Welsh ghost slug

Name: Selenochlamys ysbryda
Common Name: Ghost Slug

The word ysbryda is a Latinized version of the Welsh word ysbryd which means ghost or spirit. The name alludes to the species’ ghostly appearance, nocturnal, predatory behaviour and the element of mystery surrounding its origin. Strangely enough, this new species was discovered in Cardiff, UK, a well-collected and densely populated part of the world. (For all the Torchwood fans out there, this mesmerizing find naturally comes as no surprise.)

6.) A snail with a surprising twist

Name: Opisthostoma vermiculum
Common Name: This species has no common name in English. Do any of the readers of this blog know it has a common name in Malaysia?

Most gastropod shells tightly coil according to a logarithmic spiral and have an upper limit of three coiling axes, but the shell of Opisthostoma vermiculum consists of four different coiling axes which is the highest number ever seen in gastropods. As if this wasn’t enough, the shell whorls detach three times and reattach twice to preceding whorls in a fairly consistent manner, which suggests that the coiling strategy is under some form of strict developmental-gene control.

7.) Deep-blue deep-dweller

Name: Chromis abyssus
Common Name: Deep Blue Chromis

Compared to other members of its genus, the deep blue Chromis abyssus lives pretty far from the surface but it is certainly not found at abyssal depths. The name is instead a reference to the BBC documentary Pacific Abyss, since the type specimen was collected during the making of this show. This species was also the first one to have its description registered in the newly launched taxonomic database Zoobank.

8.) A 380 million year old delivery

Name: Materpiscis attenboroughi
Common Name: Mother Fish

This is the oldest known live bearing (viviparous) vertebrate and we know of it from fossil record only. Amazingly, the fossil shows a female fish in the process of giving birth some 380 million years ago. It was found at Gogo Station in Western Australia. The name of the genus, Materpiscis, means “mother fish” in Latin, while the species itself is named in honour of Sir David Attenborough who first drew attention to the Gogo fish sites in his 1979 series Life on Earth.

9.) African decaf

Name: Coffea charrieriana
Common Name: Charrier Coffee

This is a true member of the genus Coffea, but it is completely void of caffeine. Coffea charrieriana is the first known caffeine-free Coffea species from Central Africa and coffee makers are now pondering the idea of using it to make natural decaf coffee.

10.) Hair spray bacteria

Name: Microbacterium hatanonis
Common Name: None

This new species wasn’t found in some remote rainforest or deep down in blue; it was isolated as contaminant of hairspray.

The Top 10 New Species were selected from the thousands of species fully described and published in 2008. The public could nominate species through the IISE Web site and nominations were also generated by IISE staff and committee members themselves. The Committee had complete freedom in making its choices and developing its own criteria to provide a breadth of species attributes and importance.

I am sorry that we don’t have pictures of all species. To see pictures of all species you can here.

If you would like to nominate a species for the 2010 Top 10 New Species please click here.

Have you ever tried to keep a seahorse alive in an aquarium only to fail miserably? Well, to add insult to injury, these creatures seem to be much sturdier than previously believed, because how else can you explain the amazing survival of a British seahorse found three miles inland in Weymouth, Dorset?

“I was just popping out to buy a paper and I looked down and saw this funny object by the pathway, said Karen Warr, 46, who discovered the unusual visitor outside her house. I got a bit closer I saw it was a seahorse. They are very distinctive. I did wonder what on earth it was doing there but I could see it was still breathing so I dashed inside and the only thing I could think of to pick it up with was a fish slice. I put it in the bowl I use for my scales and filled it with tepid water. It was still breathing but wasn’t moving much, it must have been in shock.”

How long the seahorse had been lying on the ground gasping for air is unknown, but Warr put her cat out three hours earlier; a cat fond of eating creatures from the sea. “’It couldn’t have been there then otherwise he would have eaten it”, Warr explained.

After saving the seahorse from suffocation, dehydration and the possible return of the hungry cat, Warr made a call to the nearest Sealife Centre. “I called the Sea Life Centre because they are only down the road and somebody came out to see me.”

The resilient seahorse, an adult female who has been given the name Pegasus, is now recuperating from her adventures in a dark quarantine aquarium at the Sea Life Centre where she is gradually being acclimatized back to saline conditions.

“They can go into shock if they are not treated carefully”, says Display supervisor Claire Little. “She seems fine now but we will continue to monitor her while she is in quarantine for the next 28 days. She has been quite lucky. They are fairly hardy creatures but it was obviously just very good fortune that she was found straight away and we were called.”

Exactly how a seahorse ended up three mile inland remains a mystery, but Warr and Little both agree that it was most likely dropped by a seagull.

An expansion of vertical seagrass occurring some 25 million years ago was probably what prompted seahorses to evolve from horizontal swimmers to upright creatures. If you live in vertical seagrass, an upright position is ideal since it allows you to stay hidden among the vertical blades.

This new idea is put forward in a report by Professor Beheregaray* and Dr Teske** published in the journal Biology Letters on May 6.

Sea horse picture from our Seahorse section.

Only two known fossils of seahorse have been found and this scarcity of fossil records has made it difficult for scientists to determine when seahorses evolved to swim upright. The older of the two fossils is “just” 13 million years old and no links between the two fossils and horizontally-swimming fish has been found.

“When you look back in time, you don’t see intermediate seahorse-like fish,” Beheregaray explains. There are however fish alive today that look like horizontally-swimming seahorses and Beheregaray and Teske have therefore studied them in hope of finding clues as to when seahorses made the transition from horizontal to vertical swimming.

By comparing DNA from seahorses with DNA from other species of the same family, Beheregaray and Teske were able to determine who the closest living relative to seahorses was.

“The pygmy pipehorses are by far the most seahorse-like fish on earth, says Beheregaray. “They do look like the seahorses, but they swim horizontally“.

When you have two closely related species, you can use molecular dating techniques to calculate when the two species diverged from each other. Beheregaray and Teske used a molecular dating technique that relies on the accumulation of differences in the DNA between the two species, and then used the two existing fossils to calibrate the rate of evolution of DNA in their molecular clock. By doing so, the two researchers could conclude that the last common ancestor of seahorses and pygmy pipehorses lived around 25 to 28 million years ago. At this point, something must have happened that led to the formation of two distinct species, and Beheregaray and Teske believe that this “thing” was the expansion of seagrass in the habitat where seahorses first evolved.

The time in history when seahorses arose, the Oligocene epoch, coincided with the formation of vast areas of shallow water in Austalasia. These shallow waters became overgrown with seagrass and turned into the perfect habitat for upright swimming seahorses that could remain hidden from predators among the vertical blades. The pygmy pipehorse on the other hand lived in large algae on reefs and had no use for an upright position, hence it continued to swim horizontally just like their common ancestor.

“The two groups split in a period when there were conditions favouring that split,” says Beheregaray. “It’s like us. We started walking upright when we moved to the savannahs. On the other hand, the seahorses invaded the new vast areas of seagrass.”

* Associate Professor Luciano Beheregaray of Flinders University

http://www.flinders.edu.au

** Dr Peter Teske of Macquarie University

http://www.macquarie.edu.au

A new disease has been discovered; a disease that effects both Leafy seadragons (Phycodurus eques) and Weedy seadragons (Phyllopteryx taeniolatus).

The disease, which as now been described by veterinary pathologists, is a type of melanised fungus that causes extensive lesions and necrosis of the gills, kidneys and other areas of the body in seadragons. The disease was discovered in seadragons kept in aquariums.

Experts from the Department of Pathobiology and Veterinary Science at the University of Connecticut has identified the presence of both Exophiala angulospora and an undescribed Exophiala fungus in sick seadragons.

You can find more information in the paper[1] by Nyaoke et al published in the Journal of Veterinary Diagnostic Investigation[2] in January this year.

The Leafy seadragon (Phycodurus eques) and the Weedy seadragon (Phyllopteryx taeniolatus) are both marine fish species belonging to the same family as seahorses and pipefish. The Leafy seadragon is covered in long leaf-like protrusions that serve as camouflage, while the Weedy seadragon is camouflaged by weed-like projections. Both species are native to Australian waters.

Just 50 years ago, the Thames River was declared biologically dead. High amounts of pollution from industrialization and mass urbanisation, had literally killed the river. Now, after nearly 2 decades of conservation efforts, the Thames River is slowly making a come back; with over 120 species of fish now calling the Thames River their new home. One new comer stands out from the rest, the short-snouted seahorse. Scientifically defined as the Hippocampus hippocampus, the short-snouted seahorse was first discovered in the Thames back in 2006. However, the Zoological Society of London kept this rare finding under wraps, awaiting legislation’s decision to put the species under the protection of the Wildlife and Conservation Act of 1981.

So what makes this little seahorse so special? The short-snouted seahorse has previously only been found in deep waters around specified locations, and off the coast of France, Spain, and in the Mediterranean. The presence of these seahorse in the Thames River is a sign that the water quality is greatly improving, and that the Thames River will indeed make a come back as a flourishing and diverse community of underwater inhabitants.

For more information and the complete article on the Thames River Seahorse Findings; and to sneek a peak at this fabulous little finding visit:

 http://www.practicalfishkeeping.co.uk/pfk/pages/item.php?news=1659