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:7/25/2014)... News) -- Although cervical cancers are declining in the ... papillomavirus (HPV) are increasing, a new study indicates. ... the tongue and tonsils have increased over the past ... 45, the Canadian researchers report. "The increases in ... and of anal cancer among younger women are disturbing, ...
(Date:7/25/2014)... 2014 The Europe Cyber Security report ... Europe with analysis and forecast of revenue. This market ... 2014 to $19.07 billion by 2019, at a CAGR ... the TOC of the Europe Cyber Security Market report ... It also provides a glimpse of the segmentation in ...
(Date:7/25/2014)... American Brain Tumor Association (ABTA) today unveiled branding of ... patient and family conference in Chicago. , “This is ... we – the first and now only national organization ... tumor research – extend our reach by engaging volunteers ... our materials and services into the hands of those ...
(Date:7/25/2014)... Chicago, IL (PRWEB) July 25, 2014 Today, ... brain tumor, and yet, when it comes to pinpointing causes ... “Right now, we don’t know who, we don’t know when, ... Elizabeth M. Wilson, MNA, president & CEO, American Brain Tumor ... why the American Brain Tumor Association funds research to pursue ...
(Date:7/25/2014)... (PRWEB) July 25, 2014 According to ... Substrate Wafer, Devices, Applications, and Geography - Analysis & ... by substrate is expected to reach $3.01 Billion by ... Sapphire Technology Market for devices is expected to reach ... that includes an in-depth analysis of application and geography. ...
Breaking Medicine News(10 mins):Health News:Anal, Throat Cancers on the Rise Among Young Adults, Study Finds 2Health News:Europe Cyber Security Market is Expected to Reach $19 billion in 2019 - New Report by MicroMarket Monitor 2Health News:Europe Cyber Security Market is Expected to Reach $19 billion in 2019 - New Report by MicroMarket Monitor 3Health News:Europe Cyber Security Market is Expected to Reach $19 billion in 2019 - New Report by MicroMarket Monitor 4Health News:American Brain Tumor Association Unveils Brand Identity for Newly Launched Volunteer Network 2Health News:American Brain Tumor Association Unveils Brand Identity for Newly Launched Volunteer Network 3Health News:Brain Tumor Causes and Risk Factors Elude Scientists 2Health News:Brain Tumor Causes and Risk Factors Elude Scientists 3Health News:Brain Tumor Causes and Risk Factors Elude Scientists 4Health News:Sapphire Technology Market Estimated to Reach $3.01 Billion by 2020 – New Report by MarketsandMarkets 2Health News:Sapphire Technology Market Estimated to Reach $3.01 Billion by 2020 – New Report by MarketsandMarkets 3Health News:Sapphire Technology Market Estimated to Reach $3.01 Billion by 2020 – New Report by MarketsandMarkets 4Health News:Sapphire Technology Market Estimated to Reach $3.01 Billion by 2020 – New Report by MarketsandMarkets 5Health News:Sapphire Technology Market Estimated to Reach $3.01 Billion by 2020 – New Report by MarketsandMarkets 6
... exposure causes genetic changes in breast cells , , THURSDAY, ... many plastic products used in households caused accelerated breast ... a condition that might predispose the animals to breast ... Butyl benzyl phthalate (BBP) is commonly used to soften ...
... occurrence in television shows and movies, but can watching it make ... Although research has shown ... there has been little direct neuroscientific support for this theory until ... Researchers at Columbia University Medical Centers Functional ...
... Program Sets Stage for Increased Visibility ... Among Shareholders and Investors, ... EMIS ) announced today that it has retained Adam,Friedman Associates, ... is a biopharmaceutical company that focuses on a,unique and improved ...
... Insmed Inc. (Nasdaq:,INSM), a developer of follow-on biologics and ... 5th Annual Global Follow-On Biologics,Conference on December 11, 2007 ... be held at the Hyatt Regency Hotel in Reston,Virginia, ... and will bring together corporate, regulatory, financial, and legal,experts ...
... SAN FRANCISCO, Calif., Dec. 6 Proteolix, Inc.,announced ... studies using,intravenous carfilzomib (PR-171) are to be presented ... Meeting in Atlanta, Georgia, December,8-10, 2007. Carfilzomib is ... for the treatment of multiple myeloma,lymphoma and solid ...
... SGX Pharmaceuticals, Inc.,(Nasdaq: SGXP ) announced today details of ... chronic myelogenous leukemia,(CML) at the upcoming American Society of Hematology,s ... 8th - 11th, 2007 in,Atlanta, Georgia., , The schedule ... Date: ...
Cached Medicine News:Health News:Common Household Chemical Could Raise Breast Cancer Risk 2Health News:Common Household Chemical Could Raise Breast Cancer Risk 3Health News:This is your brain on violent media 2Health News:Emisphere Names Adam Friedman Associates IR Agency of Record 2Health News:Emisphere Names Adam Friedman Associates IR Agency of Record 3Health News:Insmed to Present at the IBC 5th Annual Global Follow-On Biologics Conference 2Health News:Proteolix Announces Clinical Results With Carfilzomib to be Reported at ASH 2007 Annual Meeting 2Health News:SGX Pharmaceuticals BCR-ABL Program to be Presented at the American Society of Hematology 49th Annual Meeting and Exposition 2Health News:SGX Pharmaceuticals BCR-ABL Program to be Presented at the American Society of Hematology 49th Annual Meeting and Exposition 3Health News:SGX Pharmaceuticals BCR-ABL Program to be Presented at the American Society of Hematology 49th Annual Meeting and Exposition 4
(Date:7/25/2014)... July 25, 2014  CVS Caremark Corporation (NYSE: ... on Tuesday, August 5, 2014, at 8:30 a.m. (EDT) ... 2014 financial results. An audio webcast of ... Investor Relations portion of the CVS Caremark website for ... http://info.cvscaremark.com/investors . This webcast will be archived and available ...
(Date:7/25/2014)... , July 25, 2014  The Chemistry, Food ... Ministry of Health approved the introduction of Telaprevir ... the cure rate from Hepatitis C, and it ... 1 virus. Telaprevir is available in ... Photo - http://www2.prnewswire.com.br/imgs/pub/2014-07-25/original/2026.jpg   ...
(Date:7/25/2014)... , July 25, 2014  Acsis Inc., ... protection and serialization solutions, has recently posted an ... that addresses current and future needs for companies, ... the old supply chain model no longer work ... technology, including the growth of mobile technology, machine ...
Breaking Medicine Technology:The Hepatitis C virus is the main cause of liver transplant in the world 2The Hepatitis C virus is the main cause of liver transplant in the world 3Acsis Addresses Questions on the Modern Supply Chain 2
... WIRE)--Jun 19, 2007 - Javelin,Pharmaceuticals (AMEX: JAV) ... morphine) successfully met its,primary clinical endpoint, the ... over 0-24 hours postoperatively. In this first ... moderate-to-severe pain,after elective orthopedic surgery were given ...
... --,Nuvelo, Inc. today announced the publication of the ... rNAPc2,To Help Eliminate MACE)/TIMI 32 clinical trial (N=255) ... of Cardiology (JACC), demonstrating,that higher-dose (greater than or ... (rNAPc2) reduced the incidence,and duration of ischemia as ...
Cached Medicine Technology:Javelin Pharmaceuticals Announces Successful Pivotal Phase 3 Trial,Data 2Javelin Pharmaceuticals Announces Successful Pivotal Phase 3 Trial,Data 3Javelin Pharmaceuticals Announces Successful Pivotal Phase 3 Trial,Data 4Nuvelo Announces Publication of Phase 2 rNAPc2 Study Results in,Journal of American College of Cardiology 2Nuvelo Announces Publication of Phase 2 rNAPc2 Study Results in,Journal of American College of Cardiology 3Nuvelo Announces Publication of Phase 2 rNAPc2 Study Results in,Journal of American College of Cardiology 4
... Bulb Direct has been ... Internet since 1996, and we ... 100% satisfaction guarantee. Check out ... and see our discount light ...
... Bulb Direct has been selling ... since 1996, and we are ... satisfaction guarantee. Check out our ... see our discount light bulbs ...
... been selling replacement bulbs on ... we are extremely proud of ... out our catalog of replacement ... light bulbs specials. ,Check ...
... Direct has been selling replacement ... 1996, and we are extremely ... guarantee. Check out our catalog ... our discount light bulbs specials. ...
Medicine Products: