Navigation Links
When nature calls
Date:2/10/2011

COLLEGE STATION, Feb. 9, 2011 When you've got to go, you've got to go upstream, that is, if you are a male swordtail fish seeking a mate, according to research from Texas A&M University.

A recent study led by Texas A&M biologists Dr. Gil Rosenthal and Dr. Heidi Fisher in collaboration with scientists at Centro de Investigaciones Cientificas de las Huastecas in Hidalgo, Mexico, and Boston University has determined that the fish use chemical cues in their urine to elicit sexual responses from their downstream female counterparts.

In a study funded by the National Science Foundation and the American Livebearer Association, Rosenthal and his team found that male swordtail fish strategically release pheromone-packed urine in the presence of females as a display of courtship, indicating that they have evolved a temporal and spatial control of their pheromone release. The findings, which are featured in the current issue of the journal "Public Library of Science (PLoS) ONE," contradict previous assumptions that male pheromones in fish are passively released, given that most fish lack specialized scent glands or scent-marking behavior.

"We showed that male swordtail fish use chemicals in the urine as mating signals," Rosenthal says. "There's been relatively little work on how pheromones shape the lives of aquatic creatures."

The team studied wild-caught swordtail adults from the Rio Atempa in Huitznopala, Mexico, to determine whether females were attracted by passively produced cues or to pheromones as a form of communication. Using fluorescein dye injections to visualize urine release inside an aquarium, the researchers were able to determine that male swordtails relieved themselves more frequently in the presence and proximity of females than when females were absent altogether. In the wild, males court females in much the same way, but by swimming further upstream to ensure their scent is detected in the current by the
'/>"/>

Contact: Chris Jarvis
cjarvis@science.tamu.edu
979-845-7246
Texas A&M University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Sirtris review of sirtuin therapeutics for diseases of aging in Nature Reviews Drug Discovery
2. Extreme nature helps scientists design nano materials
3. Nature study demonstrates that bacterial clotting depends on clustering
4. Nature Medicine study shows Peregrines bavituximab can cure lethal virus infections
5. Unifying the animate and the inanimate designs of nature
6. CIC Teams With Industry Leader iPipeline to Provide Electronic Signature Platform to the Nations Top Insurance Carriers
7. Researchers find natures shut-off switch for cellulose production
8. Researchers push nature beyond its limits to create higher-density biofuels
9. Scientists make strides toward defining genetic signature of Alzheimers disease
10. New genetic markers for ulcerative colitis identified, researchers report in Nature Genetics
11. CIC to Host Webinar Featuring Independent Research Firm: Enabling Straight Through Processing - Why the Insurance Industry Needs Electronic Signature Technology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/30/2015)... June 30, 2015 To bolster its efforts and ... Corp. announced today the addition of two new team members. ... board advisor and David Raviv will act as ... HYPR Corp.,s commitment to providing the most secure solutions for ... co-founded Layer 7 Technologies, a provider of security and ...
(Date:6/30/2015)... Genisphere announced Tom Bliss ... further develop Genisphere,s therapeutics capabilities and portfolio. Mr. Bliss ... much of the last 25 years in leadership positions ... Johnson & Johnson. Tom started his career in Investment ... Finance. He graduated from Dartmouth College with a BA ...
(Date:6/29/2015)... , June 24, 2015 ... addition of the "Latin America Biomedical Sensors Market ... their offering. The Latin America Biomedical Sensors ... a CAGR of 2.04% over the period 2014-2020 ... are adaptable to the genetic formulation of each individual. ...
Breaking Biology News(10 mins):HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3Latin America Biomedical Sensors Market Report 2015-2020 2
... This news release is available in German ... fever, diarrhoea -- these symptoms could point to an infection ... is based on a syringe-like injection apparatus called injectisome. For ... at the Helmholtz Centre for Infection Research (HZI) in Braunschweig, ...
... oligodendrocyte precursor cells (OPC) migrate to the lesion and ... the Institute of Molecular Cell Biology at Johannes Gutenberg ... protein regulates the direction and movement of OPC toward ... at the surface of OPCs and down-regulated as they ...
... Western Reserve University has granted a two-year technology ... a hand-held device that diagnoses malaria more quickly, ... Diagnostic Group LLC, the startup formed last summer ... of Engineering, also raised $250,000 to "field-test" the ...
Cached Biology News:3-D molecular syringes 23-D molecular syringes 3Scientists at Mainz University decode mechanisms of cell orientation in the brain 2CWRU grants Disease Diagnostic Group option on malaria diagnostic device 2
(Date:6/30/2015)... , June 30, 2015  Today, Americord Registry, one ... announced Andrew Horne , a partner at Kirkland & ... Logo - http://photos.prnewswire.com/prnh/20150630/226958LOGO   ... Americord,s Advisory Board," says Martin Smithmyer , CEO of ... his legal career that will assist Americord,s growth and vision." ...
(Date:6/30/2015)... ... June 30, 2015 , ... uBiome and ... insights on mechanics of fecal microbiota transplantation in C. difficile patients. , SAN ... of patients undergoing fecal microbiota transplantation (FMT) as a treatment for Clostridium difficile ...
(Date:6/30/2015)... ... June 30, 2015 , ... ... does not sacrifice selectivity to achieve faster flow rates in comparison to nylon ... with significant open space to allow easy liquid flow while trapping particulates as ...
(Date:6/30/2015)... (PRWEB) , ... June 30, 2015 , ... ... services to the federal government, announced in a paper published this week in ... a potential problem with the diagnostic techniques currently used to detect the Ebola ...
Breaking Biology Technology:Americord Registry Announces Andrew Horne as Advisory Board Member 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 3New Nanofiber Membrane Provides Fast, Efficient Filtration 2Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 2Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 3Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 4
... University of Wisconsin-Madison spinoff developing a drug for people with ... $1.6 million, of which it has received the first portion, ... developing drug candidates. , ,Trevor Twose, Mithridion's CEO, said the ... that he may hire six people by the end of ...
... was sent an announcement of pending Illinois broadband legislation ... Here's its synopsis: , Creates the Universal Access to ... Services (CMS) to create and maintain a map of ... publicly held broadband infrastructure shall be available for lease ...
... to a biotech company (it is priority #1, #2, and ... sense) companies are continually faced with the challenge of raising ... article will focus on venture capital financing results for 2005. ... from Burrill and Company's data. Burrill's perspective is more towards ...
Cached Biology Technology:Mithridion raises $1.6M through angel networks 2Proposed Illinois broadband act falls short 2Proposed Illinois broadband act falls short 3Proposed Illinois broadband act falls short 4Proposed Illinois broadband act falls short 5U.S. VC funding flat in 2005 while life science funding grows 2U.S. VC funding flat in 2005 while life science funding grows 3U.S. VC funding flat in 2005 while life science funding grows 4