Navigation Links
Climate change may alter amphibian evolution
Date:10/25/2012

Most of the more than 6,000 species of frogs in the world lay their eggs in water. But many tropical frogs lay their eggs out of water. This behavior protects the eggs from aquatic predators, such as fish and tadpoles, but also increases their risk of drying out. Justin Touchon, post-doctoral fellow at the Smithsonian Tropical Research Institute, discovered that climate change in Panama may be altering frogs' course of evolution.

By analyzing long-term rainfall data collected by the Panama Canal Authority, Touchon discovered that rainfall patterns are changing just as climate-change models predict.

"Over the past four decades, rainfall has become more sporadic during the wet season," said Touchon. "The number of rainy days decreased, and the number of gaps between storms increased."

The eggs of the pantless treefrog, Dendropsophus ebraccatus, are extremely susceptible to drying. The embryos die within a day when there is no rain. Heavy rains trigger breeding, so as storms become sporadic, the chance of rain within a day of being laid decrease and so does egg survival.

As weather patterns have changed, the advantage of laying eggs out of water has decreased, not only for pantless treefrogs but potentially for many species. "Pantless treefrogs can switch between laying eggs in water or on leaves, so they may weather the changes we are seeing in rainfall better than other species that have lost the ability to lay eggs in water," said Touchon. "Being flexible in where they put their eggs gives them more options and allows them to make decisions in a given habitat that will increase the survival of their offspring."


'/>"/>

Contact: Beth King
kingb@si.edu
202-633-4700
Smithsonian Tropical Research Institute
Source:Eurekalert  

Page: 1

Related biology news :

1. New study will help protect vulnerable birds from impacts of climate change
2. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
3. UNH researchers find African farmers need better climate change data to improve farming practices
4. Fielding questions about climate change
5. Glacier-fed river systems threatened by climate change
6. Beating famine: Sustainable food security through land regeneration in a changing climate
7. Energy requirements make Antarctic fur seal pups vulnerable to climate change
8. Why spring is blooming marvelous (and climate change makes it earlier)
9. Carnegies Greg Asner named Energy/Climate Fellow by US State Department
10. Declines in Caribbean coral reefs pre-date damage resulting from climate change
11. Some corals like it hot: Heat stress may help coral reefs survive climate change
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Climate change may alter amphibian evolution
(Date:10/15/2014)... , Oct. 15, 2014 Sandata ... for home and community-based care, today announced it ... implementing Sandata,s Santrax® Electronic Visit Verification™ Solution (EVV™) ... is a home health company founded in 1996 ... . The study details ...
(Date:10/15/2014)... rapidly and to an unexpected extent. The outbreak does ... the virus shows a new disease dynamic in regions, ... reason, the German National Academy of Sciences Leopoldina, acatech ... the Union of the German Academies of Sciences and ... today. , In the statement the academies call for ...
(Date:10/15/2014)... 2014   Neurotechnology , a provider of ... of the VeriLook Surveillance 3.0 software development ... biometric face identification using live video streams from ... new version not only identifies faces in a ... while they are moving through the video frame. ...
Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3
... , AMIA, the association for professionals in biomedical and ... the National Coordinator on Health Information Technology (DHHS/ ONCHIT), ... meaningful use of electronic health records (EHRs) over the ... Policy Committee (HITPC), on the continuation of support for ...
... When patients receive a bone marrow transplant, they are getting ... are needed when a patient is low on red blood ... be caused by cancer or even cancer treatments such as ... transplant might not succeed because the transplanted stem cells don,t ...
... Spanish . Fernando Rendo, biologist at the ... with the intention of completing the genealogical tree ... Country Autonomous Community (CAPVEAE) and Navarre. Concretely, he opted for ... (a kind of variation in the DNA sequence) that can ...
Cached Biology News:AMIA on meaningful use: Invest in people and technology 2How long do stem cells live? 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 3
(Date:10/20/2014)... October 20, 2014 OncLive® ... Kimmel Cancer Center at Thomas Jefferson University has ... Through the Strategic Alliance Partnership program, the Sidney ... collaborate to raise awareness of the Center’s cutting-edge ... other projects. Clinicians and other health care professionals ...
(Date:10/19/2014)... 2014 The Latin American hardware encryption ... Latin America with analysis and forecast of revenue. This ... is expected to reach $2,366.8 million by 2018, at ... Browse through the TOC of the Latin American hardware ... in-depth analysis provided. It also provides a glimpse of ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The ... bromine market in Asia-Pacific with analysis and forecast ... the Asia Pacific Bromine Market report, to get ... also provides a glimpse of the segmentation in ... various tables and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html ...
(Date:10/19/2014)... 19, 2014 The report "Chocolate, Cocoa ... Trade, Prices, Geography Trend and Forecast (2011 - 2016)," ... and geography and studies the major market drivers, restraints, ... Europe, and Asia. , The global chocolate market is ... billion in 2016 at an estimated CAGR of 2.7% ...
Breaking Biology Technology:Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4
... GeneMorph PCR mutagenesis kit produces a unique , mutational spectrum , ... , , ... Stratagene , , , ... The , GeneMorph PCR , mutagenesis kit ...
... cDNA gene clusters are novel and more ,than 50% ... Goncalves Jean-Michel Lelias Joe Sorge ,Stratagene , ... ,goes beyond normal cDNA collections. Stratagene has searched ... of cDNAs that are not found ,in the UniGene ...
... need to manually pour gels, saving up,to 4 hours ... to bubbles or leaking.All CastAway gels are guaranteed to ... date of manufacture, with no,detectable deterioration in band resolution. ... Stratagene adds a new 6% gel to the growing ...
Cached Biology Technology:Randomize Gene Sequences with New PCR Mutagenesis Kit 2Randomize Gene Sequences with New PCR Mutagenesis Kit 3Randomize Gene Sequences with New PCR Mutagenesis Kit 4Randomize Gene Sequences with New PCR Mutagenesis Kit 5Randomize Gene Sequences with New PCR Mutagenesis Kit 6Randomize Gene Sequences with New PCR Mutagenesis Kit 7Randomize Gene Sequences with New PCR Mutagenesis Kit 8Randomize Gene Sequences with New PCR Mutagenesis Kit 9Randomize Gene Sequences with New PCR Mutagenesis Kit 10Randomize Gene Sequences with New PCR Mutagenesis Kit 11The GeneZoo or the GeneJungle? 2The GeneZoo or the GeneJungle? 3The GeneZoo or the GeneJungle? 4The GeneZoo or the GeneJungle? 5The GeneZoo or the GeneJungle? 6The GeneZoo or the GeneJungle? 7The GeneZoo or the GeneJungle? 8The GeneZoo or the GeneJungle? 9The GeneZoo or the GeneJungle? 10Four New CastAway Precast Gels 2
Quantibody Human Angiogenesis Array 1 (1 slide) Class: Quantitative Antibody Arrays Product Group: Antibody Array...
Immunochemistry 1 & 2...
...
Hucal Agx Antigen Expression Service Specificity: Hucal Agx ...
Biology Products: