Navigation Links
New study points to agriculture in frog sexual abnormalities
Date:7/3/2008

t to explicitly ask, of these two areas of human disturbance, do we see a greater proportion of abnormal animals in one versus another?" Guillette said.

Because the results implicate agriculture, future research can narrow the focus to agricultural chemicals, McCoy said.

"Because we know what chemicals are used at these agricultural sites, we can begin to pin down the chemical cause of these abnormalities by conducting controlled experiments with each chemical alone and in combination," she said.

The researchers gathered giant toads, known scientifically as Bufo marinus, from five sites stretching from Lake Worth to Belle Glade and down to Homestead in South Florida. Bufo marinus is a very large, exotic, invasive, species known to be deadly to small animals. Guillette said the researchers studied the toad in part because they are easy to catch and their large size ensures enough blood for analysis. Also, he said, "they are common in other agricultural areas around the world," which means they are a good generalist species.

One of the sites consisted almost entirely of land devoted to sugar cane or vegetable farms. The amount of farmland declined in three other sites, with the last being entirely suburban. Researchers calculated the amount of farmland in each site using Google Earth images.

Each site was 2.1 square miles, with the toads collected at the center. That's because the toad's home range is known to be about 1.2 miles, and the researchers sought only those toads living entirely within each site. The researchers collected at least 20 toads from each site in 2005 and 2006.

Examination of the euthanized toads revealed a pattern: The more agricultural the land where they lived, the more sexual organ abnormalities or so-called "intersex" toads -- toads who have both female and male internal reproductive organs, not a normal condition for this and most species of amphibians.

While normal male toads'
'/>"/>

Contact: Lou Guillette
ljg@zoo.ufl.edu
University of Florida
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/5/2015)... MOUNTAIN VIEW, Calif. , Aug. 5, 2015 /PRNewswire/ ... it exhibits continuous growth in applications, penetration into newer ... year after year. The global biosensors space has seen ... having exited the market so far. (Photo ... from Frost & Sullivan, Analysis of the Global ...
(Date:8/3/2015)... , Aug. 3, 2015 Synaptics, Inc. ... interface solutions, today announced that members of the executive ... the Pacific Crest Global Technology Leadership Forum on Tuesday, ... conference will be held at the Sonnenalp Resort in ... The presentation may include forward-looking information. An audio webcast ...
(Date:7/31/2015)... de 2015 A 10 a. Conferência ... pela BGI de 22-25 de outubro de 2015, em ... conferência está celebrando seu 10 o. aniversário este ano. ... uma das reuniões mais influentes do mundo no ramo ... entusiastas e prazerosos. A ICG-10 se ...
Breaking Biology News(10 mins):Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3
... A scientist at The Florida State University Coastal and ... study the endangered but little-known sawfish, whose numbers are ... The formidable-looking sawfish is related to the stingrays ... overexploited in many parts of the world due to ...
... based at the University of Pittsburgh provides the first ... nanotubesthe superstrong materials found in products from electronics to ... effects of being exposed to the tiny components, according ... The results could open the door to the ...
... Following yesterday,s launch dress rehearsal and the debriefing today, the ... ice mission tomorrow at 15:57 CEST. Today,s go-ahead marks ... CryoSat-2 satellite. By measuring the tiny variations in the thickness ... the vast ice sheets on land, the mission will provide ...
Cached Biology News:FSU marine ecologist wins grant to study endangered sawfish 2FSU marine ecologist wins grant to study endangered sawfish 3Pitt-led international study identifies human enzyme that breaks down potentially toxic nanomaterials, opens door to novel drug delivery 2Pitt-led international study identifies human enzyme that breaks down potentially toxic nanomaterials, opens door to novel drug delivery 3CryoSat-2 ready for launch 2
(Date:8/26/2015)... ... August 26, 2015 , ... ... today that a second US laboratory is to open in Manhattan, Kansas in ... continued partnership and long-term growth of research and development through collaboration with researchers ...
(Date:8/26/2015)... 2015  The Diabetes Research Institute (DRI), a ... Miller School of Medicine, announced today that the ... for the first time a novel transplant technique ... approved Phase I/II study builds upon decades of ... important first step toward the development of the ...
(Date:8/26/2015)... China Cord Blood Corporation (NYSE: CO ... provider of cord blood collection, laboratory testing, hematopoietic stem ... that the Company has been informed that Magnum Opus ... by Mr. Yuen Kam, chairman of the board of ... (the "Shares") of  Excellent China Healthcare Investment Limited ("KKR ...
(Date:8/26/2015)... ... 26, 2015 , ... The 2015 Epigenomics & Metabolomics Meeting in ... Asymmetrex to share the first report on progress with its crowdsourcing campaign ... adult tissue stem cells. , With a name like “H2A.Z asymmetry,” the new biomarker ...
Breaking Biology Technology:MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 2MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 2China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 3Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 2Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 3Asymmetrex Reports Positive Indicators for Crowdsourcing Campaign to Evaluate New Biomarker for Counting Adult Tissue Stem Cells for the First Time 4
... new class of economically viable solar power cellscheap, flexible ... reality as a result of recent work* at the ... have deepened their understanding of the complex organic films ... which rely on organic molecules to capture sunlight and ...
... , SADDLE RIVER, N.J., July 29 PDI, Inc. ... and marketing support to U.S. pharmaceutical companies, today announced that it ... 5, 2009 after the market close. , , ... 4:30 p.m. Eastern time on August 5, 2009 to discuss the ...
... , RICHMOND, Calif., July 29 ... quarter 2009 financial results and accomplishments. , , ... a consolidated net loss of $4.5 million, or $0.11 per share, ... per share, for the same period in 2008. As of June ...
Cached Biology Technology:NIST scientists study how to stack the deck for organic solar power 2PDI, Inc. to Hold Second Quarter 2009 Financial Results Conference Call on Wednesday, August 5, 2009 2Sangamo BioSciences Reports Second Quarter 2009 Financial Results 2Sangamo BioSciences Reports Second Quarter 2009 Financial Results 3Sangamo BioSciences Reports Second Quarter 2009 Financial Results 4Sangamo BioSciences Reports Second Quarter 2009 Financial Results 5Sangamo BioSciences Reports Second Quarter 2009 Financial Results 6Sangamo BioSciences Reports Second Quarter 2009 Financial Results 7
96 Well Plate UB, RE bottom; consistent medium binding affinity for hydrophobic complexes and proteins....
Black 96 Well Plate EB, RE Bottom...
96 Well Plate EB, RE bottom; high binding irradiated surface to provide increased binding affinity for hydrophilic proteins and complexes. Guaranteed coefficient of variation (CVs)....
...
Biology Products: