Navigation Links
Some like it hot: The role of heat in sea lampreys' sex lives
Date:6/27/2013

'Is it hot in here or is it just you?' Clichd chat-up lines may serve some humans well, but other animals prefer more imaginative ways to captivate and attract potential suitors. Take, for example, the male sea lamprey, which will coax ovulating females into its nest by releasing enticing pheromones. Once comfortably in the nest, the male will then perform an interesting dance routine, rubbing the female's belly with a small bump of tissue on his back. Should the female be happy with what she sees and feels, the two will then spawn their gametes simultaneously. This unusual courtship routine is well characterised but no one is quite sure what role this bump, called rope tissue, plays in the proceedings. 'We thought it's just a structure that was used for some kind of mechanical stimulation that they needed to trigger the female to lay eggs', says Yu-Wen Chung-Davidson, from Michigan State University, USA, who has been studying lampreys for 10 years. However, she wasn't sure if this was the case, and so Chung-Davidson and her colleagues decided to investigate. They publish their findings in The Journal of Experimental Biology that rope tissue is a heat-generating secondary sexual trait -- the first of its kind ever identified

To begin her investigation, Chung-Davidson simply looked at the rope tissue under the microscope, and what she saw surprised her: 'It looked opaque, and it looked like fat to me.' Explaining her next step, she says, 'I happened to have tissues from various life stages of these lampreys and so I compared them and it's very interesting. When they are in the immature state, the male and females look more or less the same. But when I looked in the mature males and females, they were very different. So there's very obvious sexual dimorphism in their morphology and this part of their body.'

When Chung-Davidson delved deeper, looking at
'/>"/>

Contact: Michaela Handel
michaela@biologists.com
44-012-234-25525
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Malawi trial saves newborn lives
2. New NHCPS App, CertAlert+, Makes Health Care Providers’ Lives Much Easier
3. Austerity cuts to Spanish healthcare system are putting lives at risk
4. Smartphones, drones, to save lives in Malawi
5. Radioimmunotherapy could extend lives of advanced lymphoma patients
6. Partial livers from deceased donors saving the lives of infants
7. Merck for Mothers Supports UNICEF’s Efforts to Help Save Lives in South Africa
8. Kaufman Shows People With Diabetes How to Use New Technology to Improve Their Lives
9. New Emergency Stroke Treatments Can Save and Restore Lives if Patients Act Quickly and Call 911
10. Mercy's Digital Hospital Records Save Lives in Joplin
11. Mom+Social Highlights the Power of Social Media to Improve the Lives of Families and Communities Around the World
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... As interest in the value of spiritual support as ... Rev. Eric J. Hall , president and CEO of the ... the keynote speaker on January 27 at an international summit ... The conference, “Hope and Resilience: Innovative and Interdisciplinary Spiritual Care,” ...
(Date:1/22/2015)... Compare-autoinsurance.org has released a new blog post presenting a list of ... . , Some types of vehicles cannot be covered under ... blog post to see if their vehicle qualifies for auto insurance ... of the cars that cannot be covered by a plan. Clients ...
(Date:1/22/2015)... VA (PRWEB) January 22, 2015 Step ... power at the Science Museum of Virginia. Wicked Plants, ... , Wicked Plants unearths 75 poisonous, carnivorous and diabolical ... through each room to uncover the biochemical, physical and ...
(Date:12/26/2014)... TX (PRWEB) December 26, 2014 The US ... in this report. In 2013, GlobalData’s forecast estimates that sales ... largest CRC market due to the high incidence of the ... with the 5EU, Japan, and China. Increased sales of CRC ...
(Date:12/26/2014)... Cooking and warming equipment has a ... reflects slightly positive negotiation conditions for buyers, stemming from a ... low level of price volatility. “However, buyer power is reduced ... equipment and high volatility in the world price of steel ...
Breaking Medicine News(10 mins):Health News:HealthCare Chaplaincy CEO to Keynote Spiritual Care Summit in Israel 2Health News:HealthCare Chaplaincy CEO to Keynote Spiritual Care Summit in Israel 3Health News:Some Vehicles Cannot Be Covered By An Auto Insurance Policy! 2Health News:Wicked Plants are taking over the Science Museum of Virginia 2Health News:US Colorectal Cancer Drug Market Analysis and Forecast to 2023 Report Available at ReportsnReports.com 2Health News:US Colorectal Cancer Drug Market Analysis and Forecast to 2023 Report Available at ReportsnReports.com 3Health News:US Colorectal Cancer Drug Market Analysis and Forecast to 2023 Report Available at ReportsnReports.com 4Health News:Cooking & Warming Equipment Procurement Category Market Research Report from IBISWorld has Been Updated 2Health News:Cooking & Warming Equipment Procurement Category Market Research Report from IBISWorld has Been Updated 3
... , PITTSBURGH, Jan. 10 ... Inc. will join with the Centers for Disease Control (CDC) ... other organizations across the country in a nationwide effort to ... vaccination. , The H1N1 flu is a serious disease. ...
... ... radiology, (with over 65 clients in 24 states) announced today that several radiology practices in ... and Santa Fe Imaging in Santa Fe, NM, have signed contracts for billing and practice ... ...
... ... The largest and longest continuously running plastic surgery practice in the ... communicate with visitors. The Long Island Plastic Surgical Group, PC, a practice ... using an array of interactive media to provide web visitors with a ...
... Speaker Nancy Pelosi released the following statement on a ... the Center for American Progress that shows that health insurance ... than would be created without reform. The report finds that health care reform ... to 400,000 per year over the coming decade. , "We know ...
... ... , Health and Development Groups ... A broad coalition of organizations representing millions of Americans applauded today,s statement ... the worldwide consensus that achieving universal access to reproductive health is critical ...
... , , SILVER SPRING, ... has agreed to stop producing and distributing its medical products ... is in compliance with FDA quality standards. The products are ... FDA clearance review and approval for safety and effectiveness. The ...
Cached Medicine News:Health News:Highmark Supports National Influenza Vaccination Week 2Health News:Highmark Supports National Influenza Vaccination Week 3Health News:ADVOCATE Announces New Partnerships With Centers in the Western U.S. 2Health News:ADVOCATE Announces New Partnerships With Centers in the Western U.S. 3Health News:Long Island Plastic Surgical Practice - the Largest in the U.S. - Opens Virtual Doors on a New, State-of-the-Art Website 2Health News:Long Island Plastic Surgical Practice - the Largest in the U.S. - Opens Virtual Doors on a New, State-of-the-Art Website 3Health News:Long Island Plastic Surgical Practice - the Largest in the U.S. - Opens Virtual Doors on a New, State-of-the-Art Website 4Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 2Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 3Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 4Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 5Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 6Health News:U.S. Government Rejoins Worldwide Consensus on Reproductive Health 7Health News:FDA Requires Sybaritic, Inc. to Stop Producing Unapproved Medical Devices 2Health News:FDA Requires Sybaritic, Inc. to Stop Producing Unapproved Medical Devices 3
(Date:1/22/2015)... 2015  Profil Institute for Clinical Research, Inc., a clinical ... today a new textbook,  Translational Research Methods for Diabetes, ... leading global scientific publisher. The textbook is ... use in early phase clinical studies of new drugs ...
(Date:1/22/2015)... Research and Markets ( http://www.researchandmarkets.com/research/3h534b/infectious ) has ... Market by Product, Application, Technology, End User - Global ... The infectious disease diagnostics market is expected ... million by 2019 from $12,422.8 million in 2014. Increase ...
(Date:1/22/2015)... , Jan. 22, 2015 Research and Markets ( ... Diagnostics Market by Allergen Source, Product & by End User ... The global allergy diagnostics market is valued ... at a CAGR of 12.67%, to reach $2,230.72 million by ...
Breaking Medicine Technology:New Textbook "Translational Research Methods for Diabetes, Obesity and Cardiometabolic Drug Development" Provides Critical Review Of Current And Emerging Clinical Investigation Methods 2New Textbook "Translational Research Methods for Diabetes, Obesity and Cardiometabolic Drug Development" Provides Critical Review Of Current And Emerging Clinical Investigation Methods 3Global Infectious Disease Diagnostics (Instruments, Reagents, Services, Software) Market - Forecast to 2019 2Global Infectious Disease Diagnostics (Instruments, Reagents, Services, Software) Market - Forecast to 2019 3Global Allergy Diagnostics (Immunoassay Analyzer, Luminometer, Assay Kit, Consumables) Market - Forecast to 2019 2Global Allergy Diagnostics (Immunoassay Analyzer, Luminometer, Assay Kit, Consumables) Market - Forecast to 2019 3
... 2011 The City of Sacramento Police Department (Calif.) ... EmFinder,s EmSeeQ® wearable locator system that uses cellular technology ... due to cognitive disorders, such as Alzheimer,s, dementia or ... list of progressive public safety organizations across the state ...
... April 27, 2011 Advanced Life Sciences ... engaged in the discovery, development and commercialization of novel drugs ... announced that as of today the Company,s ticker symbol has ... the ticker symbol had a "D" temporarily appended to it ...
Cached Medicine Technology:Sacramento Police Upgrades Search and Rescue Technology with EmSeeQ® Wearable Locator System to Improve Safety for At-Risk Adults and Children 2Sacramento Police Upgrades Search and Rescue Technology with EmSeeQ® Wearable Locator System to Improve Safety for At-Risk Adults and Children 3Advanced Life Sciences Ticker Symbol Reverts Back to 'ADLS.OB' 2
... offer a safe alternative to using positive ... applications such as PCR(a), pipetting radioactive materials ... are excellent for tissue culture, gel loading, ... prevent aerosol contaminants and liquids from reaching ...
Hydrophobic PE filter without self-sealing additives, permits sample recovery after accidental over-pipetting. All filters are sterile (to USP, DAB, Ph.Eur. standards) and PCR clean (free from human ...
... false signals and contamination caused by ... Barrier Tips offer performance and economy ... (PCR(a)), radioactive isotopes, tissue culture fluids, ... , ,Promega Barrier Tips are made ...
Diamond Filter Tips play a critical role in preventing aerosol-borne contamination. Also available sterilized (no need to autoclave) and certified free of detectable RNase, DNase, DNA, RNA, and prote...
Medicine Products: