HOME >> BIOLOGY >> NEWS
Scientists find male finches frugal in their attempts to attract females

CHAPEL HILL Attracting a mate can be a costly endeavor, according to a University of North Carolina at Chapel Hill scientist, but new experiments he helped lead show that some male animals economize on courting when the chance of success seems low.

Dr. Keith W. Sockman, assistant professor of biology in UNC's College of Arts and Sciences, studies mating behavior in songbirds and the songs that play such a central role in their reproduction.

"From people to praying mantises, individuals invest everything from their homes to their heads to attract a member of the opposite sex," Sockman said. "When male songbirds sing to attract a mate, they expend energy during times they could otherwise be foraging for seeds and grubs.

"They may also increase their exposure to predators," the biologist said. "This led us to predict that when females are in short supply or infertile, unmated males should reduce these 'costs' by singing less."

In a paper published in the new issue of the journal Biology Letters, Sockman and colleagues Dr. Thomas P. Hahn and Kendra B. Sewall of the University of California at Davis and Dr. Gregory F. Ball of Johns Hopkins University in Baltimore, report that male songbirds are frugal in their efforts to attract a mate.

Studying Cassin's finches, which breed in the Sierra Nevada Mountains of California, the scientists found that males sang the most in response to the loss of a prospective mate but sang very little either in the presence of a mate or when females were unlikely to be nearby.

The researchers concluded that male Cassin's finches adjust their mate-attraction efforts according to their need for a mate and the likelihood of attracting one.

"But the story gets better," Sockman said. "After the breeding period was over, we determined the relative fertility of females by measuring when each began feather molt."

Because molt begins when fertility ends, the scientists could infe
'"/>

Contact: David Williamson
919-962-8596
University of North Carolina at Chapel Hill
2-Feb-2005


Page: 1 2

Related biology news :

1. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
2. Scientists prove that disputed Korean stem cell line comes from an unfertilized egg and not cloning
3. Scientists move closer to bio-engineered bladders
4. Scientists find stem cell switch
5. Scientists discover new way to study nanostructures
6. Scientists a step closer to understanding how anaesthetics work in the brain
7. Scientists to make news at Computational Biology Conference
8. Accident-prone? Scientists link brain function to knee injuries
9. Scientists take next step in understanding potential target for ovarian cancer treatment
10. Scientists find brown fat master switch
11. Scientists identify 2 distinct Parkinsons networks

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/18/2019)... (PRWEB) , ... March 18, 2019 , ... ... cost-effective, but also successfully leverages the patient perspective and improves participation by better ... is one way of involving the patient in the entire process from development ...
(Date:3/13/2019)... N.J. (PRWEB) , ... March 13, 2019 , ... ... for the Pharmaceutical, Biotechnology and Medical Device Industries, is excited to announce that it ... in early February 2019 and the newly installed and highly experienced management team ...
(Date:3/9/2019)... ... March 07, 2019 , ... A firm believer in causes ... & Lymphoma Society (LLS). This donation will help fund not only research to find ... families. , “We are always on the lookout for ways to make a ...
Breaking Biology News(10 mins):
(Date:3/19/2019)... (PRWEB) , ... March 19, 2019 , ... ... Minolta, Inc. (Konica Minolta) today announced the formation of their inaugural Scientific Advisory ... advancement of precision medicine that takes into account individual variability in genes, environment, ...
(Date:3/19/2019)... ... March 19, 2019 , ... ... largest hospital in Israel and the Middle East region, and Swiss-based CDMO ... Cocoon™ manufacturing platform. The partnership will enable Sheba to vastly streamline its ...
(Date:3/18/2019)... , ... March 18, 2019 , ... For more than ... to develop solutions that allow life science companies to easily comply with FDA 21 ... Cloud Assurance ™ is a managed service delivering end-to-end GxP compliance from vendor audit ...
(Date:3/14/2019)... , ... March 14, 2019 , ... ... their facility in Oklahoma City, OK. EyeCRO joins the Department of Veterans Affairs, ... Health Sciences Center as the fifth institution in Oklahoma to receive this prestigious ...
Breaking Biology Technology:
Cached News: