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:10/1/2014)... Innovations announces the upcoming airing of Innovations with ... 20, 2014 at 7:30 a.m. EST/PT via Discovery Channel. ... scenes to learn about Break the Cycle’s comprehensive dating ... help and information Break the Cycle provides to teens ... abuse, how to navigate the legal system, and provides ...
(Date:10/1/2014)... 01, 2014 NoteSwift Inc., announced today ... 10.0, 12.1 and 13.0. NoteSwift is the bridge between ... to navigate and document clinical information at the point ... creating a patient note by more than half – ... major pain points providers state impedes EHR use according ...
(Date:10/1/2014)... Scientists at the University of Western Australia say ... proteins has the power to knock out mesothelioma in ... new study on their website. Click here to ... UWA School of Pathology and Laboratory Medicine administered anti-CD25, ... with promising results. , “A timed triple immunotherapy ...
(Date:10/1/2014)... in Bahir Dar, Ethiopia, at the occasion of ... gathered some 150 African and international leishmaniasis experts, ... safety and efficacy monitoring plan, carried out ... Sudan, Uganda, and Ethiopia, were presented to key ... to treatment of kala-azar with the combination of ...
(Date:10/1/2014)... October is national Breast Cancer Awareness ... plans while raising money for breast cancer research. Pelican ... Month in the effort to find a cure. ... importance of having access to clean, healthy water. Research ... to certain forms of cancer. , The Problem ...
Breaking Medicine News(10 mins):Health News:Innovations to Explore Breakthroughs in Health and Wellness in Upcoming Episode Airing Monday, October 20, 2014 via Discovery Channel 2Health News:NoteSwift Joins Allscripts Developer Program 2Health News:NoteSwift Joins Allscripts Developer Program 3Health News:New Mesothelioma Study Says Mice Cured by Immuntherapy “Cocktail”, Reports Surviving Mesothelioma 2Health News:Results of large-scale roll out of combination treatment for kala-azar in Eastern Africa 2Health News:Pelican Water Supports Breast Cancer Awareness Month with Order Donations 2
... Imaging (BSGI) has,been proven to be a highly ... carcinoma (ILC), a difficult to diagnose breast cancer. ... see lesions independent of,tissue density and discover very ... magnetic resonance imaging (MRI), BSGI has the,greatest sensitivity ...
... UNH ) is giving Pennsylvania children the ... childhood obesity, designing programs to,address it and implementing ... UnitedHealth HEROES is a ... working through educators and youth,leaders, to create and ...
... Money may be better spent in other areas, experts say ... teams, created to prevent cardiac arrest and deaths in critically ... finds. , "Many hospitals have implemented these teams over the ... cardiologist at the Mid America Heart Institute in Kansas City, ...
... name for the project formerly known as “Clinical Document Architecture for Common ... standards developed by the project and submitted to Health Level Seven (HL7) ... ... 2, 2008 -- "Our group has been working with many partners ...
... of Engineering has led to significant improvements in turnover ... hospitals, allowing "many more hours of daytime surgery per ... work will be expanded to include three more hospitals. ... of Industrial and Systems Engineering began work in January, ...
... Thursday December 4th Governor Howard Dean will deliver the Keynote ... the Pulse of Health IT: A Critical Review of Progress ... and Beyond." , , (Logo: ... The Keynote speech will begin at 4:30 p.m. For more ...
Cached Medicine News:Health News:Molecular Breast Imaging Has Greater Sensitivity Over Mammography, Ultrasound and MRI for Invasive Lobular Carcinoma 2Health News:UnitedHealth Group Grants to Help Students and Educators Combat Childhood Obesity 2Health News:Rapid Response Teams Don't Cut Hospital Heart Attacks, Death Rates 2Health News:Rapid Response Teams Don't Cut Hospital Heart Attacks, Death Rates 3Health News: "The Health Story Project" Adopted as New Brand by CDA4CDT : New Brand Underscores Comprehensive Electronic Health Records 2Health News: "The Health Story Project" Adopted as New Brand by CDA4CDT : New Brand Underscores Comprehensive Electronic Health Records 3Health News: "The Health Story Project" Adopted as New Brand by CDA4CDT : New Brand Underscores Comprehensive Electronic Health Records 4Health News: "The Health Story Project" Adopted as New Brand by CDA4CDT : New Brand Underscores Comprehensive Electronic Health Records 5Health News:Operations engineering for more efficient operating rooms 2Health News:Operations engineering for more efficient operating rooms 3
(Date:10/1/2014)... -- NeuroCall, Inc., ("NeuroCall") announced today that it recently ... services. Dr. Ricardo Garcia-Rivera , Founder and Chief ... that our quality of service has been recognized by ... support and continuity of care to patients of our ... United States ." NeuroCall currently ...
(Date:10/1/2014)... LOUIS , Oct. 1, 2014  Express Scripts ... two nationally available 2015 Express Scripts Medicare ® ... pharmacy network featuring Walgreens (NYSE: WAG ) ... more value, choice and clinical support  for their Medicare ... Express Scripts Medicare Value or Choice ...
(Date:10/1/2014)... 2014 Ardelyx, Inc. (NASDAQ: ... focused on cardio-renal, gastrointestinal and metabolic diseases, ... patient Phase 2b clinical trial evaluating tenapanor ... (IBS-C).  Results from this study demonstrated statistically ... symptoms for tenapanor-treated patients compared to patients ...
Breaking Medicine Technology:NeuroCall Awarded Joint Commission Accreditation 2Express Scripts Collaborates with Walgreens to Create Value-Driven Medicare Prescription Drug Plan Pharmacy Network 2Express Scripts Collaborates with Walgreens to Create Value-Driven Medicare Prescription Drug Plan Pharmacy Network 3Express Scripts Collaborates with Walgreens to Create Value-Driven Medicare Prescription Drug Plan Pharmacy Network 4Ardelyx Reports Positive Results from Its Phase 2b Clinical Trial Evaluating Tenapanor in IBS-C Patients 2Ardelyx Reports Positive Results from Its Phase 2b Clinical Trial Evaluating Tenapanor in IBS-C Patients 3Ardelyx Reports Positive Results from Its Phase 2b Clinical Trial Evaluating Tenapanor in IBS-C Patients 4Ardelyx Reports Positive Results from Its Phase 2b Clinical Trial Evaluating Tenapanor in IBS-C Patients 5Ardelyx Reports Positive Results from Its Phase 2b Clinical Trial Evaluating Tenapanor in IBS-C Patients 6
... ... Symposium, SAN ... and Systems Medicine, LLC (SM), a,wholly-owned subsidiary of CTI, announced new ... AACR-NCI-EORTC Symposium. "These studies show potential progress toward identifying specific,tumor ...
... and Effective Symptom Control, BOSTON, Oct. ... TSX: SHQ), the global specialty biopharmaceutical company, ... DAYTRANA(TM) (methylphenidate,transdermal system), the Attention Deficit Hyperactivity ... ADHD tolerability,and symptom control improvement in children ...
Cached Medicine Technology:Preclinical Studies Show Potential Progress Toward Identifying Specific Tumor Types With Higher Likelihood of Demonstrating Response to Anti-Cancer Compounds Early in Clinical Development 2Preclinical Studies Show Potential Progress Toward Identifying Specific Tumor Types With Higher Likelihood of Demonstrating Response to Anti-Cancer Compounds Early in Clinical Development 3Preclinical Studies Show Potential Progress Toward Identifying Specific Tumor Types With Higher Likelihood of Demonstrating Response to Anti-Cancer Compounds Early in Clinical Development 4Preclinical Studies Show Potential Progress Toward Identifying Specific Tumor Types With Higher Likelihood of Demonstrating Response to Anti-Cancer Compounds Early in Clinical Development 5Long-Term 12-Month Safety Data Presented on ADHD Patch DAYTRANA(TM) (methylphenidate transdermal system) 2Long-Term 12-Month Safety Data Presented on ADHD Patch DAYTRANA(TM) (methylphenidate transdermal system) 3Long-Term 12-Month Safety Data Presented on ADHD Patch DAYTRANA(TM) (methylphenidate transdermal system) 4Long-Term 12-Month Safety Data Presented on ADHD Patch DAYTRANA(TM) (methylphenidate transdermal system) 5
... of thumb motion can be difficult for ... persons with spinal cord injuries and for ... cerebral palsy or other motor or coordination ... thumb for control and coordination. Soft foam-lined ...
... weight and strong, the ThumSaver CMC Short lessens ... the CMC and/or MP joints of the thumb. ... and full IP joint motion for function. Includes ... Skiers thumb, and for rest due to repetitive ...
... common site for arthritis in the hand. The ... the wrist or other joints of the thumb. ... or reduce subluxation of the CMC joint of ... without pain. Also useful for persons experiencing pain ...
... orthosis is designed to comfortably restrict motion ... the hand in a neutral position. It ... thermoplastic whose unique characteristics offer durable performance ... rigid cast-like immobilization of the wrist, hand, ...
Medicine Products: