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:5/29/2015)... York (PRWEB) May 29, 2015 World ... patented products, announces that it has signed a 10 ... technology patent that aims to let people learn about ... in real time. , "This is an exciting day ... " said Scott J. Cooper, CEO and Creative Director ...
(Date:5/29/2015)... New York, NY (PRWEB) May 29, 2015 ... readers on the “beauty of protection”. Skin Health ... through USA Today within the markets of New York, ... reach an estimated 750,000 readers. Its digital counterpart will ... online content hubs. To read more the Skin Health ...
(Date:5/29/2015)... (PRWEB) May 29, 2015 The ... provides comprehensive information on the therapeutic development for ... of muscles in the body, leading to many ... pipelines by identifying new targets and MOAs to ... H1 2015 pipeline review of Axillary Hyperhidrosis with ...
(Date:5/29/2015)... Hollywood, Florida (PRWEB) May 29, 2015 ... and Bodybuilding.com teamed up to create an all new, ... supplements are a formulated with the latest and greatest, ... researched and proven to be effective. The 24/7 Series ... runners, to cross-fitters and even the casual fitness enthusiasts. ...
(Date:5/29/2015)... The annual aesthetic meeting, put on by the American ... from May 14-19th. This global event sets a gold ... world; dedicating itself exclusively to cosmetic medicine. Dr. Paul ... to attend this year’s meeting. , Among the classes ... given the honor of sitting at the presenter’s table during ...
Breaking Medicine News(10 mins):Health News:Licensing Alert! World Patent Marketing's Latest Blockbuster Licensing Deal Gets A New Twist on Technology With The Live Expert Chat Room 2Health News:Licensing Alert! World Patent Marketing's Latest Blockbuster Licensing Deal Gets A New Twist on Technology With The Live Expert Chat Room 3Health News:Licensing Alert! World Patent Marketing's Latest Blockbuster Licensing Deal Gets A New Twist on Technology With The Live Expert Chat Room 4Health News:Licensing Alert! World Patent Marketing's Latest Blockbuster Licensing Deal Gets A New Twist on Technology With The Live Expert Chat Room 5Health News:Mediaplanet Launches “Skin Health” Campaign Featuring Colorescience 2Health News:Muscle Spasm Therapeutic Development Pipeline Review H1 2015 Market Research Report Available at RnRMarketResearch.com 2Health News:Muscle Spasm Therapeutic Development Pipeline Review H1 2015 Market Research Report Available at RnRMarketResearch.com 3Health News:Muscle Spasm Therapeutic Development Pipeline Review H1 2015 Market Research Report Available at RnRMarketResearch.com 4Health News:BPI Sports and Bodybuilding.com Partner Up to Bring an Innovative New Line of Supplements 2Health News:BPI Sports and Bodybuilding.com Partner Up to Bring an Innovative New Line of Supplements 3Health News:Dr. Paul Vitenas Presents at 2015 Aesthetic Meeting 2Health News:Dr. Paul Vitenas Presents at 2015 Aesthetic Meeting 3
... choose to decorate the,Christmas tree, light the menorah, or ... can be an extremely stressful time for,couples in inter-faith ... to celebrate can strain your relationship and,lead to conflict ... on your religious backgrounds and level of dedication to ...
... The American Academy,of Orthopaedic Surgeons (AAOS) has approved and ... Carpal Tunnel Syndrome.", "Carpal Tunnel Syndrome, otherwise known ... upper extremity. It affects up to ten percent of,the ... thought to be caused,by increased pressure on the median ...
... of its commitment to providing the industry,s most aggressive defense, The ... liability in the U.S., is rolling out litigation education retreats for ... , ... Napa, Calif. (Vocus) October 27, 2008 -- As ...
... systems for HH-60M Black Hawk ... helicopter, ... largest air medical transportation company in the,world, today announced its Products Division ... Company for production of 48,HH-60M Black Hawk Multi-Mission Medevac Interior Systems. Production ...
... October 27, 2008 Is schizophrenia a disorder of ... for many years was that schizophrenia was a glutamate ... as well. The study by Karlsson et al., ... Psychiatry , reinforces this point with new data about ...
... Digital ID for Travelers Makes Doctor Visits Abroad Even ... a global health and,safety services company, today announced the ... card. My Digital ID enables HTH,members to access all ... mobile phone. Global travelers can rely on direct access ...
Cached Medicine News:Health News:He's Jewish, I'm Catholic, It's December. Now What? 2Health News:AAOS Issues New Treatment Guidelines for Carpal Tunnel Syndrome 2Health News:The Doctors Company Launches Litigation Education Retreats to Assist Physicians Involved in Medical Litigation 2Health News:Air Methods Receives $17 Million Contract from Sikorsky Aircraft Company 2Health News:Glutamate: Too much of a good thing in schizophrenia? 2Health News:HTH Worldwide Unveils First Digital Healthcare Card 2
(Date:5/29/2015)... 2015 Amgen (NASDAQ: AMGN ) ... 3, global, randomized, placebo-controlled trials evaluating AMG 416, ... hyperparathyroidism (SHPT) in patients with chronic kidney disease ... endpoint, demonstrating that a greater proportion of patients ... than 30 percent reduction in parathyroid hormone (PTH) ...
(Date:5/28/2015)... and HOUSTON , May 28, 2015 /PRNewswire/ ... today reported financial results for the second quarter and three ... otherwise, are expressed in Canadian dollars and in accordance with ... ESSA recorded a net loss of $5.9 ... March 31, 2015 (Q2-2015), compared to a net loss of ...
(Date:5/28/2015)... , May 28, 2015  IRIDEX Corporation (NASDAQ: IRIX ... Officer James H. Mackaness is scheduled to present ... at 9:00 am PT in Los Angeles ... may be accessed on the Event Calendar of the Investors ... of the webcast will be available shortly after the conclusion ...
Breaking Medicine Technology:Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 2Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 3Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 4Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 5Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 6Amgen Presents Pooled Phase 3 AMG 416 Data For The Treatment Of Secondary Hyperparathyroidism In Patients With Chronic Kidney Disease 7Essa Pharma Inc. Reports Second Quarter 2015 Financial Results 2Essa Pharma Inc. Reports Second Quarter 2015 Financial Results 3Essa Pharma Inc. Reports Second Quarter 2015 Financial Results 4Essa Pharma Inc. Reports Second Quarter 2015 Financial Results 5
... Oct. 5 Osseon Therapeutics, Inc. announced its ... North American Spine Society,s (NASS) annual meeting in ... facilitate treatment of vertebral compression fractures (VCFs) that ... fibrotic metastases.  The Osseoflex DR Steerable Bone Drill ...
... SUNNYVALE, Calif., Oct. 5 Accuray Incorporated (Nasdaq: ... of radiosurgery, announced today that the company was awarded a ... U.S. Government to be used toward further development of a ... grant will fund the development of a next generation, compact ...
Cached Medicine Technology:Osseon® Therapeutics Introduces New Osseoflex® DR Steerable Bone Drill 2Accuray Awarded $1 Million Grant by U.S. Government 2Accuray Awarded $1 Million Grant by U.S. Government 3
... self-adjusting adaptability to fit almost every operating ... angling at the sit of fixation to ... it to be titled to any position ... a simple adjustment of the 3/D Swinger ...
Inquire...
Stainless steel construction to withstand sterilization modalities (EtO, Steris, and Sterrad)...
Stainless steel construction to withstand sterilization modalities (EtO, Steris, and Sterrad) Wide angle of view...
Medicine Products: