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:11/22/2014)... Domestic farmgate milk and dairy ... due to a fall in demand for ... amid the global financial crisis. However, these declines ... dairy manufacturers on the international scene. Strong growth ... growth, primarily due to supply constraints in some ...
(Date:11/22/2014)... The topic of B&D Rockeries’ latest publication is ... states that, “While they give off the appearance of simplicity ... creating this powerful look.” , One of the first and ... kind of block matches your home environment and best fulfills ... main options are concrete and stone blocks. But do not ...
(Date:11/22/2014)... has been a historical time for Angeldress.co.uk, an excellent wedding ... some renowned review websites. Recently, the company has added to ... of wonderful sexy wedding dresses to its website. At the ... to an 80% discount on any order over GBP 149. ... dress at Angeldress.co.uk, which has garnered a hard core of ...
(Date:11/22/2014)... 22, 2014 Recently, UWDress.com is gratified ... guest dresses . In addition, the company has also ... , As a leading online supplier of wedding dresses, ... outfits. The unusual best wedding guest gowns are provided ... amazing designs, this new selection is famous for high ...
(Date:11/22/2014)... 2014 The Sports Conflict Institute ... to its team of conflict resolution professionals. Baroff comes ... and referee. He has over 30 years experience as an ... “I'm very excited to connect with SCI and bring my ... to a program with a complete sports focus,” says Baroff. ...
Breaking Medicine News(10 mins):Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 2Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 3Health News:Butter and Dairy Product Manufacturing in Australia Industry Market Research Report Now Updated by IBISWorld 4Health News:5 Step Installment of Block Retaining Walls is Topic of Latest Article by B&D Rockeries 2Health News:Sexy Wedding Dresses with Special Discounts Launched by Angeldress.co.uk 2Health News:Best Wedding Guest dresses Introduced by UWDress.com 2Health News:SCI Announces New Team Member Roy Baroff 2Health News:SCI Announces New Team Member Roy Baroff 3
... typically fight bacteria, study finds , MONDAY, Oct. 1 ... air pollution, shuts down early immune responses in the ... to bacteria and other foreign invaders, research shows. , ... increased cardiovascular and pulmonary hospitalizations and deaths, but the ...
... Oct. 1 Sunnylife Global, Inc.,(Pink Sheets: SNYL) ... financial public relations services. At a time ... quality,healthcare management in China and build assisted-living housing ... to do so, with,approvals from China,s central government. ...
... HOFFMAN ESTATES, Ill., Oct. 1 In continuing support ... Serta is putting the,famous Counting Sheep back to work ... will honor two breast cancer survivors or,co-survivors with a ... a $5,000 donation to Komen for the Cure in ...
... Md., Oct. 1 The first lady of the,United ... her husband,s,governorship she intends to help improve the lives ... week Cecile deJongh saw a major piece of her ... Wednesday and Thursday, one on St. Croix,and the second ...
... 1 The Regulatory Affairs,Professionals Society (RAPS), ... products regulatory profession, announced at their annual,conference ... Affairs Professional,Development Framework: An Overview," a new ... of regulatory professionals. The white paper, ...
... Carry RESPeRATE ... Hypertension Treatment Device, NEW ... INCR), today announced that its RESPeRATE(R) hypertension,treatment device, clinically-proven ... launch into retail distribution in,Australia through its local marketing ...
Cached Medicine News:Health News:Sunnylife Global Retains The Blaine Group For Investor Relations, Financial Public Relations 2Health News:Serta Brings Sweet Dreams and a Special Delivery to Deserving Women 2Health News:Serta Brings Sweet Dreams and a Special Delivery to Deserving Women 3Health News:First Lady of U.S. Virgin Islands Opens New CHADD Support Groups 2Health News:New RAPS White Paper Details Career Development of Healthcare Products Regulatory Professionals 2Health News:New RAPS White Paper Details Career Development of Healthcare Products Regulatory Professionals 3Health News:InterCure and High Tech Health Announce RESPeRATE Launch into Pharmacy Market in Australia 2Health News:InterCure and High Tech Health Announce RESPeRATE Launch into Pharmacy Market in Australia 3Health News:InterCure and High Tech Health Announce RESPeRATE Launch into Pharmacy Market in Australia 4
(Date:11/21/2014)... 2014 Michael DeMarco (42) erinnert ... 14. Februar 2014 zugetragen hat. Seine Tochter Aly Demarco ... Video - http://youtu.be/5cVoMCe0uiE ... morgendliches Training zu machen", erzählt Michael DeMarco . ... begeisterte Anhänger der CrossFit-Trainingsmethode. Ich war auf dem ...
(Date:11/21/2014)... , Nov. 20, 2014   Coqui RadioPharmaceuticals Corp. ... first U.S. commercial producer of Molybdenum-99 (Mo-99), is proud ... INVAP to design its Medical Isotope Production ... Mo-99 is the parent isotope of Technetium-99, which is ... In 2012, Congress passed legislation making it a national ...
(Date:11/21/2014)... 2014   Wellcentive , the industry leader ... organizations, announced today being named one of the ... Award .  Sponsored by Intel, the world leader ... year, recognizes companies developing leading-edge technology and unique ... Wellcentive,s Mason Beard , ...
Breaking Medicine Technology:Tochter rettet Vater durch Herz-Lungen-Wiederbelebung vor plötzlichem Herztod 2Tochter rettet Vater durch Herz-Lungen-Wiederbelebung vor plötzlichem Herztod 3Coqui RadioPharmaceuticals Inks Deal With INVAP 2Wellcentive Named Finalist for 2014 Intel Innovation Award 2Wellcentive Named Finalist for 2014 Intel Innovation Award 3
... Oct. 23 Novavax, Inc. (Nasdaq: NVAX ) a clinical-stage ... will be presenting at the 8th Annual BIO Investor Forum 2009 ... 2009 at the Palace Hotel in San Francisco, California. Mr. ... research and development progress. A link to the live presentation ...
... , HOLLISTON, Mass., Oct. 23 Nyer Medical Group, Inc., ... wholly-owned subsidiary of Nyer which does business under the name ... Walgreen Eastern Co., Inc. for the sale of a substantial ... of a total of 12 neighborhood pharmacies which includes the ...
Cached Medicine Technology:Novavax to Present at 8th Annual BIO Investor Forum 2009 2Nyer Medical Group, Inc., Announces Agreements to Sell Certain Eaton Apothecary Assets to Walgreens and Sell Operating Subsidiary's Stock to Investors 2Nyer Medical Group, Inc., Announces Agreements to Sell Certain Eaton Apothecary Assets to Walgreens and Sell Operating Subsidiary's Stock to Investors 3Nyer Medical Group, Inc., Announces Agreements to Sell Certain Eaton Apothecary Assets to Walgreens and Sell Operating Subsidiary's Stock to Investors 4
Triad Plus Sterile Isopropyl Alcohol 70% USP Prep Pads are medium size. Each package is terminally sterilized, ensuring the safest possible product....
Aplicare's Prep Pads offer convenience, low cost, ease of use. The medium size is appropriate for most applications. Each package is terminally sterilized, ensuring the safest possible product for th...
... Triad Plus Sterile Isopropyl ... are primarily used as ... to administering injections. They ... meet AAMI/ANSI/ISO 11137 standards ...
BETADINE® Solution Swabsticks are indicated whenever a topical microbicide is applied most conveniently with a swabstick....
Medicine Products: