Researchers from the State University of Papua Indonesia, NOAA Fisheries Service, University of Alabama at Birmingham and World Wildlife Fund Indonesia released a report today documenting the continued decline of leatherback sea turtle nesting in the western Pacific Ocean.
"At least 75 percent of all Leatherback turtles in the western Pacific Ocean hatch from eggs laid on a few beaches in an area known as Bird's Head Peninsula in Papua Barat-Indonesia," said Peter Dutton of NOAA's Southwest Fisheries Science Center and one of the researchers who co-authored the paper. "Our analysis indicates the number of leatherback turtle nests on this beach has declined 78 percent over the last 27 years."
Leatherbacks are the largest of all marine turtles and the largest living reptile in the world weighing up to 2000 pounds and over six feet in length. Female leatherbacks lay clutches of approximately 100 eggs and typically nest several times during a nesting season. After about two months, the hatchlings emerge from the nest and enter the ocean where they mature and may migrate as far away as California to feed on jellyfish; a distance of about 6,000 miles.
Scientists believe there are a number of reasons why the leatherback turtle populations have continued to decline over the past three decades. Extensive harvesting of eggs, predation of nests by feral pigs and other predators, and the accidental capture in commercial fisheries are the primary factors involved.
Ricardo Tapilatu, lead author on the Ecosphere paper, and co-authors Manjula Tiwari and Dutton, began assessing and developing a nesting beach census and management plan over a decade ago as part of an international partnership to halt the species decline.
"The turtles nesting at Papua Barat, Papua New Guinea, and other islands in our region depend on food resources in waters managed by many other nations for their survival," said Tapilatu. "It is important to protect leatherbacks in these foraging areas so that our nesting beach conservation efforts can be effective".
"The international effort has attempted to develop a science-based nesting beach management plan by evaluating and addressing the factors that affect hatching success such as high sand temperatures, erosion, feral pig predation, and relocating nests to maximize hatchling output," said Manjula Tiwari, a researcher at NOAA's Southwest Fisheries Science Center, in La Jolla, California.
The conservation value of nesting beach protection has also been recognized by groups like the International Seafood Sustainability Foundation (ISSF) that have raised funds from industry-affiliated members including tuna canners and processors, to help support UNIPA's nest protection program with the local communities on Bird's Head Peninsula.
"NOAA Fisheries Service is committed to doing our part in the international effort to recover the leatherback turtle through advancing science, implementing our recovery plans and management efforts such as the establishment of critical habitat off California," said Cisco Werner, Director of the Southwest Fisheries Science Center. "Reducing threats on the nesting beaches and at leatherback foraging areas will require continued international cooperation and action if we hope to save Pacific leatherbacks from extinction."
Article available here: http://www.esajournals.org/doi/pdf/10.1890/ES12-00348.1
Jim Milbury | EurekAlert!
Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University
Climate change: Urban trees are growing faster worldwide
13.11.2017 | Technische Universität München
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
23.11.2017 | Information Technology
23.11.2017 | Physics and Astronomy
23.11.2017 | Life Sciences