HOME >> BIOLOGY >> NEWS
Light sticks may lure turtles to fishing lines

les are endangered species. A recent estimate published in the journal Ecology Letters suggests 200,000 loggerhead and 50,000 leatherback turtles may die each year in commercial fishery longlines. Total populations have declined in the past 20 years, Lohmann said.

While its difficult to separate the impact of longline fisheries from other threats turtles face, researchers say that the loss to longlines is significant because the turtles caught are often adolescents, which die before they have a chance to reproduce. Only about one in 5,000 turtles ever survive to adulthood. In the past, those lucky enough to last a few years in the ocean could expect a long life and would replenish the population. With the advent of longline fishing, the number of survivors has dwindled. A lot of turtles that beat the odds and would otherwise have lived long lives are now being caught on longlines, Lohmann said.

Lohmann, Wang and their team tested loggerhead turtles response to light sticks in a large, water-filled tank. Turtles were placed into a soft cloth harness and tethered to an electronic tracking device that monitored their movements. Safely encased in the soft fabric and released in the tank, the turtles swam as if in the open ocean, apparently unaware that they arent going anywhere, Wang said.

When glowing light sticks were introduced to the tank, the turtles swam toward them, as if curious about the lights, Lohmann said. The color or type of the light stick did not seem to matter. The turtles paddled toward green, blue and yellow light sticks, as well as toward both plastic chemical lightsticks and newer models based on reusable LEDs.

Both captive-raised and wild-caught juvenile turtles were attracted to glowing light sticks, whether in total darkness or underneath a night sky, Wang said. When the lights werent activated, they were unappealing. The experiments were conducted at the National Marine Fisheries Services Galveston Labora
'"/>

Contact: Becky Oskin
becky_oskin@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
4-May-2007


Page: 1 2 3

Related biology news :

1. Light-activated therapy targets DNA components
2. Light-activated compound silences nerves, may one day help epileptics
3. Lighting up life: Cold Spring Harbor Protocols presents tips for creating glowing plants
4. Light-Activated Tissue Regeneration and Therapy -- II
5. Lighting up the heart
6. Light guides flight of migratory birds
7. Light-to-moderate prenatal alcohol exposure can lead to cognitive deficits 10 years later
8. Light activated anticancer drug targeted to DNA using cisplatin like sub-units
9. Light-sensing cells in retina develop before vision
10. Light exercise a tonic to keep the brain young
11. Light-induced hormone surge points to benefits of light therapy

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/15/2016)... Dec. 15, 2016 Advancements in ... health wellness and wellbeing (HWW), and security ... three new passenger vehicles begin to feature ... recognition, heart beat monitoring, brain wave monitoring, ... monitoring, and pulse detection. These will be ...
(Date:12/12/2016)... 2016  Researchers at Trinity College, Dublin, are ... combining the material with Silly Putty. The mixture (known ... able to sense pulse, blood pressure, respiration, and ... The research team,s findings were published ... http://science.sciencemag.org/content/354/6317/1257 ...
(Date:12/7/2016)... 7, 2016 According to a new market research report ... (Facial Expression, Voice Recognition), Service, Application Area, End User, And Region - Global ... from USD 6.72 Billion in 2016 to USD 36.07 Billion by 2021, at ... Continue Reading ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:1/21/2017)... , Jan. 21, 2017   Boston Biomedical , ... designed to target cancer stemness pathways, today presented data ... napabucasin, at the 2017 American Society of Clinical Oncology ... . In a Phase Ib/II ... designed to inhibit cancer stemness pathways by targeting STAT3 ...
(Date:1/20/2017)... 2017 http://www.Financialbuzz.com - ... leading causes of death worldwide. There were 8.2 million ... cancer related deaths increased gradually over time, the death ... of various cancers continues to drive demand of biological ... Global Market Insights, Inc. cancer biological therapy market size was ...
(Date:1/19/2017)... and HOUSTON , Jan. 19, ... today announced the formation of its Medical/Clinical Advisory ... and industry veterans who enhance the range and ... accelerates development of its novel prenatal diagnostic tests.  ... clinical and strategic guidance for the company,s product ...
(Date:1/19/2017)... ... January 19, 2017 , ... November Research Group, LLC, a ... medical device manufacturers and regulators, is proud to announce the worldwide release of ... designed to provide product vigilance departments with the flexibility and ease of use ...
Breaking Biology Technology:
Cached News: