Navigation Links
The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens

In many animals, males advertise to potential mates with showy traits, many of which are linked to testosterone levels. However, a new study suggests that, in fish, choosing a flashier mate may cause future generations to be more susceptible to pathogens.

In the January 2007 issue of The American Naturalist, a new study by Judith Mank (Uppsala University, Sweden) finds that mating with males who possess showy traits ?such as bright colors or long tails and fins ?results in higher testosterone levels in males over many generations. Because male and female testosterone levels are correlated, female choice also results in an increase in female testosterone levels.

Testosterone is an immune suppressor, and increases in testosterone can reduce an animal's ability to fight off diseases. Therefore, a female's choice of a male with exaggerated ornaments may make her daughters and granddaughters less able to resist pathogens, Mank argues.

However, there may be some benefits for the females. For example, females are larger than males in many fish species, perhaps because of the requisite energetic burdens of producing massive amounts of roe, and elevated testosterone increases body size.

Thus, as Mank writes: "The benefits of increased body size to roe production and mate selection may, at least in some cases, counter the immunosuppressive effects of elevated testosterone in females."


'"/>

Source:University of Chicago Press Journals


Page: 1

Related biology news :

1. Restaurant seafood prices since 1850s help plot marine harvests through history
2. Sexual cooperation: Mating increases longevity in ant queens
3. Same-Sex Mating Discovered in a Toxic Fungus
4. Mother birds increase progesterone to hatch females
5. Male elephants woo females with precise chemistry
6. New study explores beetle species with two forms of females
7. Male rivalry increases when females at most fertile, say researchers
8. Brain differences could explain why males and females experience pain relief differently
9. Insects that produce males from unfertilized eggs reveal a surprising cellular feat
10. UCLA study finds same genes act differently in males and females
11. Choosy females make colourful males
Post Your Comments:
(Date:3/31/2015)... YORK , March 31, 2015  Elephant Talk ... "Company"), a global provider of Software Defined Network Architecture ... today announced total revenue of approximately $20.4 million for ... a restated $19.5 million for the year ended December ... calendar 2014, the Company had completed its multi-year transition ...
(Date:3/26/2015)... TORONTO , March 26, 2015 ... premier family, social, recreation and athletic club, today announced ... designed to allow freedom of movement for members and ... "Following a comprehensive process, we selected FST,s IMID ... sophistication and convenience for our members and staff, in ...
(Date:3/24/2015)...   NexID Biometrics LLC, whose spoof-mitigation technology ... announced the beginning of shipments of version 2.0 of ... company, based in Potsdam, N.Y. , ... which began here today at the Walter E. Washington ... its SDK boosts the accuracy rate range to 96.5 ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
... are important vehicles for the transmission of enteric ... including human pathogens, are particularly abundant in bivalve ... procedures, thus representing a potential risk for human ... to affect the persistence of vibrios in these ...
... population of North Pacific right whales, found during the summer ... whale populations in the world. Commercial whaling in the 1800s ... these whales have been recognized as a different species from ... the Southern Hemisphere. , To help define areas and ecological ...
... in northern China starting as far back as 2400 ... farming combined with other crops, says University of Toronto ... with Chinese agriculture, most archeologists have, until recently, thought ... food associated with northern China. However, recent archeological research ...
Cached Biology News:Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host. 2Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska 2
(Date:4/24/2015)... (PRWEB) April 24, 2015 Seoul ... technology for various applications in the lighting market. ... successful installations of this technology in emerging markets ... for a wide range of applications such as ... and decorative lighting. , First launched in 2005 ...
(Date:4/23/2015)... 2015 The Thomas Brain Health ... a groundbreaking pilot study to see if early ... as little as three to six months. , ... nutritional medicine—will aggressively target and simultaneously treat the ... aging brain. These include oxidative stress, neuroinflammation, mitochondrial ...
(Date:4/23/2015)... 2015 Six startups from Russia ... 4-17 as part of the U.S.-Russia Innovation Corridor ... of biotechnology startups to participate in the program ... and the University of Maryland (UMD) signed a ... respective universities in the biomedical industry in 2013. ...
(Date:4/23/2015)... San Jose, California (PRWEB) April 23, 2015 ... – Predictive diagnostics refer to a series of ... such as cystic fibrosis, Lou Gehrig's disease, Huntington's ... beneficial in examining the gene composition and interaction ... of the disease as well as the response ...
Breaking Biology Technology:Acrich Technology from Seoul Semiconductor Adopted in Installations Worldwide 2New Study Looks to Reverse Alzheimer’s Disease 2New Study Looks to Reverse Alzheimer’s Disease 3U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 2U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 3U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 4Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 2Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 3
... BUENOS AIRES, Argentina, March 30 The Development Group ... met in the city of Buenos Aires in order ... Criteria." , (Logo: ... document will be formally submitted at the 4th International,Conference ...
... CRANBURY, N.J., March 30 Amicus Therapeutics (Nasdaq: ... Matthew R. Patterson, will be presenting at the upcoming 16th ... Biotech Industry conference at New York City,s Millennium Broadway ... to begin on Thursday, April 2, 2009 at 9:30 a.m. ...
... March 30 InterMune, Inc. (Nasdaq: ITMN ) ... and President of InterMune, will present at Citi,s 4th Annual ... at 10:40 a.m. EDT. To access a live audio ... log on to the investor relations page of InterMune,s corporate ...
Cached Biology Technology:International Soy Experts Meeting in Argentina Called by the Round Table on Responsible Soy Association (RTRS) 2