Japanese in shock over dolphin protest

The mayor of Taiji in Japan says it is hard to believe Broome Shire Council has suspended ties with his town over its annual slaughter of dolphins.

The Australian reports that mayor Shinichi Ryono is yet to receive official word from Broome that the 100-year relationship between the towns is over.

On Saturday the Broome Council voted to suspend sister-city relations after councillors decided Taiji's dolphin cull was barbaric.

The traditional dolphin slaughter, in which the marine mammals are herded into a cove and then killed in the water, has been widely condemned by animal rights activists in recent years.

In 2007 Australian actress Isabel Lucas took part in a protest against the cull, paddling out to the dolphins on a surfboard.

The move prompted Japanese police to issue a warrant for her and other's arrest.

The Taiji fishing practice has been under increased pressure following the release of documentary film The Cove.

"Taiji and Broome have a long relationship going back more than 100 years since men from here started going there to dive for pearls," Mayor Ryono told The Australian.

He said that claims the Taiji fishermen killed 23,000 dolphins a year were grossly inflated.

According to the Broome Shire Council, the suspension of relations hinges on the method of killing the dolphins and the fact that their meat contains high levels of mercury.

'Treasure Trove' Of Tools, Animal Bones Found In Underwater Caribbean Cave 'Seems Too Good To Be True'

BLOOMINGTON, Indiana -- A prehistoric water-filled cave in the Dominican Republic has become a "treasure trove" with the announcement by Indiana University archaeologists of the discovery of stone tools, a small primate skull in remarkable condition, and the claws, jawbone and other bones of several species of sloths.

The discoveries extend by thousands of years the scope of investigations led Charles Beeker, director of Academic Diving and Underwater Science Programs at IU Bloomington's School of Health, Physical Education and Recreation, and his interdisciplinary team of collaborators. The researchers' focus has been on the era a mere 500 years ago when the Old World and New World first met after Christopher Columbus stepped ashore in the Caribbean -- and on scintillating pirate lore. This rare find is expected to give insights into the earliest inhabitants of the Greater Antilles and the animals they encountered.

"To be honest, I couldn't believe my eyes as I viewed each of these astonishing discoveries underwater," Beeker said. "The virtually intact extinct faunal skeletons really amazed me, but what may prove to be a fire pit from the first human occupation of the island just seems too good to be true. But now that the lithics (stone tools) are authenticated, I can't wait to direct another underwater expedition into what may prove to become one of the most important prehistoric sites in all the Caribbean."


Beeker and researchers Jessica Keller and Harley McDonald found the tools and bones in fresh water 28- to 34-feet deep in a cave called Padre Nuestro. Nearby, and also underwater in the same cave, were found more recent Taino artifacts. The Taino were the first Native American peoples to encounter Europeans. Beeker and his colleagues have been diving in this particular cave, which sits beneath a limestone bluff and is only accessible after submerging into a small pool, since 1996 as they studied its use as a Taino water-gathering site.

Geoffrey Conrad, director of the Mathers Museum of World Culture at IU Bloomington and professor of anthropology, said the tools are estimated to be 4,000 to 6,500 years old. The bones might range in age from 4,000 and 10,000 years old. While sloth bones are not uncommon, he knows of only a handful of other primate skulls found in the Caribbean.

"I know of no place that has sloths, primates and humanly made stone tools together in a nice, tight association around the same time," said Conrad, also associate vice provost for research at IU Bloomington. "Right now it looks like a potential treasure trove of data to help us sort out the relationship in time between humans and extinct animals in the Greater Antilles. This site definitely is worthy of a large-scale investigation."

The three stone tools and remnants, made of basalt and limestone, were examined by internationally known IU anthropologists Nicholas Toth and Kathy Schick, who told researchers the palm-sized stones showed unmistakable signs of human craftsmanship. Toth and Schick are co-directors of the Center for Research into the Anthropological Foundations of Technology (CRAFT) Stone Age Institute in Bloomington.

IU primate expert Kevin Hunt told researchers the primate could have been a howler monkey which is extinct in the Caribbean. Keller said the sloth bones came from six, and possibly seven, sloths and include several species, including one the size of a black bear and another the size of a large dog. She said the primate skull is significantly different than the other primate skulls found in the Caribbean.

"Very few primate skulls have been found in the Caribbean," she said. "The others, found in the late 1800s and early 1900s, are three times as large. We have received a permit to bring the skull to Indiana University for further study. It's all very exciting."

Conrad said the lithics and bones, which have arrived at Beeker's laboratory in the School of HPER, have not only expanded the research program to an earlier time but also to an issue of concern worldwide -- the extinction of native birds and animals upon the arrival of humans. Caribbean sloths are among the many species that became extinct soon after the presence of humans.

Researchers with the Office of Underwater Science in the School of HPER work closely with cultural, historical, and tourism agencies and organizations in the Dominican Republic to protect and explore the country's cultural heritage and natural history. Keller said local interest in the discoveries has been phenomenal. The cave where they were discovered, which is part of an aquifer and cave system that supplies water to nearby resorts, has been closed for research purposes.

"There's a strong interest in protecting it, in having the research continue," Keller said. "Our partners were excited before we even found the primate."

The study is being conducted in cooperation with the Secretariat of State for Culture through the Office of Underwater Heritage and the Museum of Dominican Man, the Secretariat of State for Tourism, and the Secretariat of State for Environment and Natural Resources.

Source: http://www.underwatertimes.com/news.php?article_id=96413852701

Scientists Shed New Light On Behavior Of Shark 'Tweens' And 'Teenagers'

ScienceDaily — A long-term field and DNA study by the Institute for Ocean Conservation Science at Stony Brook University, University of Miami, Field Museum of Chicago and others has shown that young lemon sharks born at the Bimini islands, Bahamas, tend to stay near their coastal birthplace for many years. While shark research and conservation typically focuses on baby sharks confined to shallow habitats, or ocean-roaming adults, less is known about these intermediate-aged animals, which are the breeders of tomorrow and are roughly similar in development to human ‘tweens’ and teenagers.

Tropical island-nations that sacrifice their nursery habitats to coastal development are therefore likely to lose not only babies but also much older sharks from their local areas, with potentially dire effects on the surrounding ecosystem. The study, conducted over a 14-year period at the Bimini Biological Field Station, is the cover article in the August issue of Molecular Ecology, a leading international scientific journal.

“It takes some sharks more than a decade to reach reproductive age, so we set out to better understand the phase of their development from when they are a couple of years old until they are on the verge of sexual maturity,” said lead author Dr. Demian Chapman, shark scientist with the Institute for Ocean Conservation Science at Stony Brook University (SBU) in New York, and an assistant professor at SBU. “We were very surprised to see that many lemon sharks lingered for years around the island where they were born -- often more than half of their development to adulthood.”

Fear of deep water and the bigger predators that live there combined with abundant prey in the mangroves around Bimini probably keeps these island-born sharks in safer waters near home for several years after their birth. “This means that using marine reserves and other local conservation measures may help protect sharks born around tropical islands for much longer than we thought,” Dr. Chapman explained. He suspects that future research could show that these stay-at-home behavior patterns are common among many shark species that live and breed around tropical islands. “If island communities develop all of their shark nursery habitats, like mangroves, or overfish baby sharks in local waters, then they will subsequently lose a big chunk of the older sharks as well,” he said.

Love them or not, sharks are essential to healthy oceans. Removing these top-level ocean predators will disrupt the local food web and cause negative consequences for other species and the ecosystem at large. Moreover, many tropical islands generate substantial revenue from shark-dive tourism, which this new research suggests will be heavily reliant on sharks born in local nursery areas.

During the course of the Bimini study, from 1995 to 2007, over 1,700 immature lemon sharks were caught, tagged and released. The implanted tags, plus subsequent recaptures and DNA analysis, showed that more than half of the 3- to 7-year-old sharks caught off Bimini were born locally and had lingered near their birthplace for years. Full results are described in the study, entitled, Long-term natal site-fidelity by immature lemon sharks (Negaprion brevirostris) at a subtropical island.

“In general, the survival of these intermediate-aged sharks is critical for sustaining shark populations,” said study co-author Dr. Samuel Gruber, Professor at the University of Miami’s Rosenstiel School of Marine and Atmospheric Science and Director of the Bimini Biological Field Station, who has been leading the overall lemon shark research program at Bimini since 1978. “Our study suggests that local conservation efforts can help many lemon sharks born at islands like Bimini survive through roughly half of their development to adulthood. Broader scale, sometimes international, management is needed to protect them after they’ve left their birthplace as adolescents and adults.”

Detailed information on how sharks disperse from their birthplace could be very useful for conservation efforts throughout the tropics, given that many tropical shark species are threatened by overexploitation to supply the trade for shark fin soup, for which demand is especially high in Asia. Between 22 and 73 million sharks are killed each year to supply the fin trade, and international management agencies are scrambling for solutions to stem severe shark population declines.

“Our study suggests that many tropical island nations may not have to wait for complex international shark regulations to be established in order to act,” said Dr. Chapman. “Their local management efforts could give immature sharks a chance to grow up in relative safety until they are big and ‘bad’ enough to roam deeper habitats far from home, where broader scale protection becomes more important.”

The research team is now extending its study to answer one of the great mysteries of shark biology: do sharks home back to their birthplace as adults? Co-author Dr. Kevin Feldheim of the Field Museum in Chicago, who led the genetics part of the study, said: “This research showed that most of the young sharks left the island by the time they were mature. Now we want to find out if they end up coming back to the place where they were born to breed, much like salmon and sea turtles do.”

Source: http://www.sciencedaily.com/releases/2009/08/090824141047.htm