Zoo officials hope chilling frogs will stimulate their reproductive drive

Scientists at the San Diego Zoo are chilling endangered frogs to encourage breeding, the zoo announced Friday.

The scientists at the zoo’s Institute for Conservation Research placed 24 mountain yellow-legged frogs into special refrigerators cooled to 40 degrees on Jan. 1 and will keep them there to hibernate until next month.

The frogs tend to hibernate in cold weather and mate when they wake up. Females in the wild lay up to 200 eggs when the snow begins to melt.

There are only about 200 mountain yellow-legged adult frogs remaining in the San Bernardino, San Gabriel and San Jacinto mountains, according to Adam Backlin, a U.S. Geological Survey ecologist.

The San Diego Zoo has 61 adult frogs.

“We hope that by simulating the cold of the mountains where this critically endangered frog has been found, the San Diego Zoo will be able to increase the mountain yellow-legged frog population,” said Jeff Lemm, a research coordinator at the zoo. “The tadpoles we raise will be reintroduced into remote mountainous areas of Southern California where these frogs were found historically.”

Amphibians are on the decline globally because of habitat loss, non-native predators, climate change and the spread of the deadly chytrid fungus.

There are three types of frogs or toads on the federal endangered species list in Southern California.

Related posts:

  1. Officials say increase water conversation immediately
  2. SRI eliminating the controversy in stem cell research
  3. Enjoy the sun; more rain likely
  4. Rain expected to continue
  5. Colder weather, rain expected

Short URL: http://www.delmartimes.net/?p=8088

Posted by on Mar 5, 2010. Filed under Archives. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

Leave a Reply



Bottom Buttons 1

Bottom Buttons 2

Bottom Buttons 3

Bottom Buttons 4

Bottom Buttons 5

Bottom Buttons 6






  • County Board of Supervisors honors longtime former Rancho Santa Fe Association Manager
    The County Board of Supervisors recently honored former longtime Rancho Santa Fe Association Manager Pete Smith for “his outstanding service, leadership, and commitment to area residents.” Supervisor Bill Horn presented a proclamation to Smith on July 8 and the county board declared July 8 to be “Pete Smith Day” throughout the County of San Diego. Smith reti […]
  • Is Impact Investing the Way of the Future?
    By Chris L. Meacham, CPA, Cornerstone Wealth Management The next generation of investors is estimated to inherit $41 trillion from the baby boomers, and trends are revealing that impact investing will not only be part of mainstream wealth management, but it may become the core-portfolio. With that in mind, some of the biggest names in […]
  • Jerome Strack named General Manager of The Inn at Rancho Santa Fe
    Benchmark Hospitality International, a leading U.S.-based hospitality management company, has named Jerome Strack general manager for The Inn at Rancho Santa Fe, the historic hotel located near San Diego. The Inn at Rancho Santa Fe is part of Benchmark Hospitality’s Personal Luxury Resorts & Hotels brand collection. Greg Champion, executive vice presiden […]