University of Queensland researchers have discovered that one of the effects of inceased human population is stress being placed on the environment leading to sick turtles.
Staff from the Veterinary Marine Animal Research, Teaching and Investigation (Vet-MARTI) unit within the School of Veterinary Science have been conducting an in-depth investigation to determine the diseases and causes of death in green and loggerhead turtles in Southern Queensland.
Director of Vet-MARTI, Dr Mark Flint, has found that these turtles are dying due to the environment they live in, rather than from the ingestion of foreign items.
“The increases in disease syndromes we are seeing within Moreton Bay are likely to be caused by environmental stressors reducing the quality of the waters in which the turtles live," Dr Flint said.
"This contrasts to open ocean studies that have focused on the ingestion of items such as garbage bags, shredded plastic and ghost nets,” Dr Flint said.
“There is a growing body of evidence that increased populations in major cities such as Brisbane are having an effect on the health of marine turtles.”
Dr Flint said findings conducted by Vet-MARTI had shown that green turtles found stranded within the shallow waters of Moreton Bay were dying due to parasites, gastrointestinal disorders and infectious diseases. This differed from reports of turtle deaths studied in deep waters outside of the Bay.
“The approach we have taken to this investigation has allowed us to make more accurate diagnoses of diseases and causes of death," he said.
"We have established baseline medical data to determine which animals are ‘healthy' and used this to compare with ‘unhealthy' animals to diagnose diseases through working with a variety of veterinary specialists and expert biologists.”
Dr Flint believes they have only just begun and need to continue to discover improved and more accurate ways of identifying diseases in turtles and other marine animals.
“We need to use these findings to help rehabilitation centres attempting to save these animals, work these results into Marine Area Protection management plans and raise public awareness,” Dr Flint said.
This project has been running for three years and is a joint collaboration with Australia Zoo, Sea World, Underwater World and the Queensland Department of Environment and Resource Management.
Wednesday, March 24, 2010
Friday, March 12, 2010
Endangered listing eyed for US loggerhead turtles
Jay Lindsay, Associated Press Yahoo News 11 Mar 10;
BOSTON – The federal government on Wednesday recommended an endangered-species listing for the loggerhead turtles in U.S. waters, a decision that could lead to tighter restrictions on fishing and other maritime trades.
The massive, nomadic sea turtles have been listed since 1978 as threatened, a step below endangered, but federal scientists proposed ratcheting up the designation after reviewing the state of the species.
Researchers said primary threats to the loggerheads include injury and death from fishing gear and damage to their nesting areas.
The joint proposal by the National Oceanic and Atmospheric Administration's fisheries division and the U.S. Fish and Wildlife Service is not a final decision. If approved, it puts loggerheads on track for an endangered listing by the summer of 2011. The proposal now enters a public comment period.
Environmental groups who'd been pushing an endangered listing said the proposal was a "turning point" they hope will lead to greater turtle protections.
"I think it's huge day for loggerhead sea turtles," said Elizabeth Griffin, a marine wildlife scientist at Oceana. "I think it really draws attention to the fact these turtles are not doing well and more needs to be done to protect them."
No one really knows how many loggerheads there are, or how many are being killed by fishing gear or other activities. A species doesn't need falling numbers to be endangered, it can get the listing if it's shown to be threatened by one of five factors, such as disease or "manmade factors affecting its continued existence."
Griffin cites a 40 percent drop in the number of nesting females in Florida over the last decade as evidence of trouble. But the Fisheries Survival Fund, an East Coast scallopers group, said in a letter early this month that nesting beach surveys can't provide good evidence of decline because they measure only mature females, who take at least 30 years to reach breeding age.
Shaun Gehan, an attorney for the Fisheries Survival Fund, said an endangered listing is unneeded for a species there's no evidence is in danger of extinction. If new protections are mandated for the turtle, it could affect not only fishermen, but maritime traffic, coastal development and waterfront use, Gehan said.
"We are extremely disappointed that they've taken this approach," he said.
Loggerheads are named for their large heads, which contain potent jaws that can crush the hard shells of prey such as conch. The turtles are about the size of a fist when they hatch and make a frenzied dash to the surf. But they typically grow to more than three feet in length and 250 pounds. The animal can log thousands of miles as it travels across oceans.
Barbara Schroeder, national sea turtle coordinator for NOAA's fisheries division, said the biggest threats to the North Pacific loggerhead include damage to primary nesting sites, which are mainly in Japan, as well as accidental snaring of the turtles in fishing gear.
Andrea Treece of San Francisco-based Center for Biological Diversity said the turtles get hooked by Hawaiian longline fishermen targeting swordfish and tuna and can be injured or drowned.
On the East Coast, the main threat to turtles is gear from the region's various fisheries, Schroeder said.
Gehan said that scallopers have developed dredges to keep the turtles out with a chain mat that covers the opening. Critics say the dredges keep turtles out, but also crush them, though survival fund officials say there's no evidence of that.
A primary benefit of the endangered status would be increased public pressure on protecting the species, Griffin said. But the government would also have to determine "critical habitats," such as where the turtles reproduce or forage. Such places could be subject to additional protections for the turtles, including restrictions on maritime development or fishing.
A balance needs to be found to help a species Griffin called "the ambassadors of our oceans" because they travel great distances and can be seen up close when they venture on land.
"I think that really gives people an appreciation for our turtles and marine life," she said.
BOSTON – The federal government on Wednesday recommended an endangered-species listing for the loggerhead turtles in U.S. waters, a decision that could lead to tighter restrictions on fishing and other maritime trades.
The massive, nomadic sea turtles have been listed since 1978 as threatened, a step below endangered, but federal scientists proposed ratcheting up the designation after reviewing the state of the species.
Researchers said primary threats to the loggerheads include injury and death from fishing gear and damage to their nesting areas.
The joint proposal by the National Oceanic and Atmospheric Administration's fisheries division and the U.S. Fish and Wildlife Service is not a final decision. If approved, it puts loggerheads on track for an endangered listing by the summer of 2011. The proposal now enters a public comment period.
Environmental groups who'd been pushing an endangered listing said the proposal was a "turning point" they hope will lead to greater turtle protections.
"I think it's huge day for loggerhead sea turtles," said Elizabeth Griffin, a marine wildlife scientist at Oceana. "I think it really draws attention to the fact these turtles are not doing well and more needs to be done to protect them."
No one really knows how many loggerheads there are, or how many are being killed by fishing gear or other activities. A species doesn't need falling numbers to be endangered, it can get the listing if it's shown to be threatened by one of five factors, such as disease or "manmade factors affecting its continued existence."
Griffin cites a 40 percent drop in the number of nesting females in Florida over the last decade as evidence of trouble. But the Fisheries Survival Fund, an East Coast scallopers group, said in a letter early this month that nesting beach surveys can't provide good evidence of decline because they measure only mature females, who take at least 30 years to reach breeding age.
Shaun Gehan, an attorney for the Fisheries Survival Fund, said an endangered listing is unneeded for a species there's no evidence is in danger of extinction. If new protections are mandated for the turtle, it could affect not only fishermen, but maritime traffic, coastal development and waterfront use, Gehan said.
"We are extremely disappointed that they've taken this approach," he said.
Loggerheads are named for their large heads, which contain potent jaws that can crush the hard shells of prey such as conch. The turtles are about the size of a fist when they hatch and make a frenzied dash to the surf. But they typically grow to more than three feet in length and 250 pounds. The animal can log thousands of miles as it travels across oceans.
Barbara Schroeder, national sea turtle coordinator for NOAA's fisheries division, said the biggest threats to the North Pacific loggerhead include damage to primary nesting sites, which are mainly in Japan, as well as accidental snaring of the turtles in fishing gear.
Andrea Treece of San Francisco-based Center for Biological Diversity said the turtles get hooked by Hawaiian longline fishermen targeting swordfish and tuna and can be injured or drowned.
On the East Coast, the main threat to turtles is gear from the region's various fisheries, Schroeder said.
Gehan said that scallopers have developed dredges to keep the turtles out with a chain mat that covers the opening. Critics say the dredges keep turtles out, but also crush them, though survival fund officials say there's no evidence of that.
A primary benefit of the endangered status would be increased public pressure on protecting the species, Griffin said. But the government would also have to determine "critical habitats," such as where the turtles reproduce or forage. Such places could be subject to additional protections for the turtles, including restrictions on maritime development or fishing.
A balance needs to be found to help a species Griffin called "the ambassadors of our oceans" because they travel great distances and can be seen up close when they venture on land.
"I think that really gives people an appreciation for our turtles and marine life," she said.
Gentle threats won’t save the sea turtles in Malaysia
The Star 12 Mar 10;
THE solution is obvious if we really want to save the turtles from extinction, “WWF: Stop eating turtle eggs to save species from extinction” (The Star, March 11). Hit people where it hurts them most – their pockets. And if they value their physical freedom too, put them behind bars for an appreciable period.
If we simply tell people to stop consuming eggs, will that actually make them do so? No, we are Malaysians. Sometimes our gastronomic pleasures overrule what is right or good for us.
I will be the first to admit that when I was a child, turtle eggs were a delicacy and a trip to the east coast is not complete without buying scores of these eggs for our own consumption or for giving away as presents to other members of the family or friends. Sometimes, we would have relatives who lived near the Perak coastal areas who would visit us and bring these eggs as gifts.
After a long absence, our family has resumed trips to the east coast during the school holidays. These eggs are openly on sale. The sad thing is that the vendors are aware that they are doing something illegal.
In the period between being a child and growing up, I have been made aware about these turtles. They have travelled thousands of miles to lay their eggs on our shores, the survival rates for these eggs is very low and many of these turtles die after being caught in fishing nets and the species is dying out.
When I hear people singing praises about the delicate flavour of these eggs, I am appalled. These people are either unaware of the plight of the turtles or could not be bothered.
Thus, we need to raise awareness about the turtles and other endangered species. We need proper and strict enforcement, which Malaysians know is a terrible failing on our part. I recall an incident in Sarawak where turtle eggs were served at an official function. Despite reports that this was a terrible practice, no one was brought to book.
We need adequate punishment. Impose a fine and imprisonment for selling these eggs and also have a similar fine and jail sentence for those buying them. Do not imagine that kind words and pleas, or gentle threats, will make the Malaysian gourmand alter his eating habits. He won’t, but a hefty punishment will.
MARIAM MOKHTAR,
Ipoh.
Wednesday, March 10, 2010
Increase In Turtle Landings Expected This Year
KUALA TERENGGANU, March 9 (Bernama) -- The Terengganu Fisheries Department expects the number of turtle landings in the state to increase this compared to last year, as the reptile has been sighted earlier this year.
State Fisheries Department Director Zakaria Ismail said their surveillance discovered turtles landing on Feb 22 in Ma'daerah near here, compared to in March last year.
"This is a sign that turtle landings will increase this year and we plan to buy all the eggs for incubation to prevent turtle extinction in the future," he said when met by Bernama here Tuesday.
He said the department would cooperate with the World Wildlife Fund (WWF) to continue incubation efforts and ensure the continuation of these species by buying as many eggs from sellers.
Zakaria said till yesterday them department had bought 1,000 turtle eggs from sellers in Kemaman in stages since early this year.
-- BERNAMA
State Fisheries Department Director Zakaria Ismail said their surveillance discovered turtles landing on Feb 22 in Ma'daerah near here, compared to in March last year.
"This is a sign that turtle landings will increase this year and we plan to buy all the eggs for incubation to prevent turtle extinction in the future," he said when met by Bernama here Tuesday.
He said the department would cooperate with the World Wildlife Fund (WWF) to continue incubation efforts and ensure the continuation of these species by buying as many eggs from sellers.
Zakaria said till yesterday them department had bought 1,000 turtle eggs from sellers in Kemaman in stages since early this year.
-- BERNAMA
Friday, March 5, 2010
Where have all the sea turtles gone?
Simit Bhagat, Times of India 4 Mar 10;
MUMBAI: Conservationists and wildlife experts are understandably worried about the massive decline in the mass nesting colonies of Olive Ridley turtles. In 2008–09, there were as many as 155 turtle nests on beaches across the state's coastline, from which 7,884 hatchlings were released back into the sea. The previous year, 161 turtle nesting spots were recorded. This time around, however, barely 55 nests have been found.
Vishwas Katdare, secretary of Sahyadri Nisarg Mitra, an NGO that is working on a turtle conservation project, said: "Between November and March, hundreds of turtles arrive on the coast for mass nesting. By March, many of the eggs hatch and we help release the hatchlings back into the sea. This year, however, there are only 55 nests on the entire coastline, which is a major drop in numbers as compared to previous years." The turtle conservation project is sponsored by United Nations Development Programme (UNDP) and covers nearly 30 coastal villages in the state.
Every year, naturalists and wildlife experts look forward to the arrival of hundreds of Olive Ridley turtles—a Schedule I species under the Wildlife Protection Act, 1972.
The mass nesting takes place across beaches at Harihareshwar, Dabhol, Velas, Kelshi and Diveagar among others.
What's worrying experts is that there is little sign of the large herds of turtles along the state's 720-odd km coastline.
Though no scientific study is being carried out on the alarming drop, conservationists believe the cause could be Cyclone Phyan that hit the coast of Maharashtra last year. "The disturbance caused in the sea due to the cyclone could have affected their migration patterns," said Katdare. Other threats include poaching and high mortality rates due to coastal fisheries. "Such a drastic change in the breeding pattern of turtles has never been observed," Katdare added.
There are seven sea turtle species in the world, of which five are found in India. These include Green turtles (Chelonia mydas), Leather-Back turtles (Dermochelys coriacea), Loggerhead Sea turtles (Caretta caretta), Hawksbill turtles (Eretmochelys imbricata) and Olive Ridley turtles (Lepidochelys olivacea).
MUMBAI: Conservationists and wildlife experts are understandably worried about the massive decline in the mass nesting colonies of Olive Ridley turtles. In 2008–09, there were as many as 155 turtle nests on beaches across the state's coastline, from which 7,884 hatchlings were released back into the sea. The previous year, 161 turtle nesting spots were recorded. This time around, however, barely 55 nests have been found.
Vishwas Katdare, secretary of Sahyadri Nisarg Mitra, an NGO that is working on a turtle conservation project, said: "Between November and March, hundreds of turtles arrive on the coast for mass nesting. By March, many of the eggs hatch and we help release the hatchlings back into the sea. This year, however, there are only 55 nests on the entire coastline, which is a major drop in numbers as compared to previous years." The turtle conservation project is sponsored by United Nations Development Programme (UNDP) and covers nearly 30 coastal villages in the state.
Every year, naturalists and wildlife experts look forward to the arrival of hundreds of Olive Ridley turtles—a Schedule I species under the Wildlife Protection Act, 1972.
The mass nesting takes place across beaches at Harihareshwar, Dabhol, Velas, Kelshi and Diveagar among others.
What's worrying experts is that there is little sign of the large herds of turtles along the state's 720-odd km coastline.
Though no scientific study is being carried out on the alarming drop, conservationists believe the cause could be Cyclone Phyan that hit the coast of Maharashtra last year. "The disturbance caused in the sea due to the cyclone could have affected their migration patterns," said Katdare. Other threats include poaching and high mortality rates due to coastal fisheries. "Such a drastic change in the breeding pattern of turtles has never been observed," Katdare added.
There are seven sea turtle species in the world, of which five are found in India. These include Green turtles (Chelonia mydas), Leather-Back turtles (Dermochelys coriacea), Loggerhead Sea turtles (Caretta caretta), Hawksbill turtles (Eretmochelys imbricata) and Olive Ridley turtles (Lepidochelys olivacea).
Subscribe to:
Posts (Atom)
