Navigation Links
Study investigates 'divorce' among Galapagos seabirds

Being a devoted husband and father is not enough to keep an avian marriage together for the Nazca booby, a long-lived seabird found in the Galapagos Islands off the coast of Ecuador.

Many Nazca booby females switch mates after successfully raising a chick, according to a Wake Forest University study scheduled for publication in the journal Proceedings of the Royal Society B: Biological Sciences June 13.

This is surprising because there is an advantage to staying together, said Terri Maness, a doctoral student who co-authored the study with David J. Anderson, professor of biology at Wake Forest. The chance of successfully breeding probably improves as the pairs of birds get older and are together longer, as has been found in other birds.

But, often the female seeks a divorce after a few breeding seasons. Since males significantly outnumber females in the colony studied, there are plenty of bachelors available if the female has a wandering eye.

“Our study population has 50 percent more males than females, creating the opportunity for females to trade a current mate, which may be worn-out from recent breeding effort, for a ‘refreshed’ non-breeding male,” Maness said.

It takes a lot of energy to raise a chick and the responsibility is shared by both males and females. They raise one chick at a time. Parents incubate the egg for 43 days. Then, it takes another 100 to 120 days of parental care until the baby bird can fly. The parents will usually continue to provide some meals to the fledgling.

So, if, when mating season rolls around again, a male looks a little ragged from taking care of junior, his mate is likely to choose another. A male’s capacity to raise offspring, a quality that can vary with time, may carry more weight with a mate than stellar genes or past breeding success, Maness said.

She used 14 years of data on about 950 males and 700 females in the study. During that time, the maj
'"/>

Source:Wake Forest University


Page: 1 2

Related biology news :

1. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
2. Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs
3. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
4. Study Demonstrates Gene Expression Microarrays are Comparable and Reproducible
5. Study Links Ebola Outbreaks To Animal Carcasses
6. Breakthrough Microarray-based Technology for the Study of Cancer
7. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
8. Study finds more than one-third of human genome regulated by RNA
9. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
10. Study identifies predictors of HIV drug resistance in patients beginning triple therapy
11. New Study from Affymetrix Laboratories Points to Changing View of How Genome Works
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Study investigates divorce among Galapagos seabirds

(Date:9/2/2014)... accidentally touch a hot oven, you rapidly pull your ... involved in sensing and responding to such painful stimuli, ... Duke researchers have made a surprising discovery about the ... worms, and have built a structural model of the ... Communications , may help direct new strategies to treat ...
(Date:9/1/2014)... ─ Dietary quality in the U.S. has improved steadily ... fat intakebut overall dietary quality remains poor and disparities ... to a new study from Harvard School of Public ... evidence to date that the extensive efforts by many ... having some payoff, but it also indicates that these ...
(Date:9/1/2014)... Within minutes after birth, every child in the U.S. ... host of conditions, including sickle cell disease. Thousands of ... lucky, meaning many suffer and die from the disease ... a halt to at least some of those deaths. ... Biology working in the lab of George Whitesides, the ...
Breaking Biology News(10 mins):Surprising new role for calcium in sensing pain 2Surprising new role for calcium in sensing pain 3Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3Faster, cheaper tests for sickle cell 2Faster, cheaper tests for sickle cell 3
... connection between the body, mind and spirit has been ... years. The notion that psychosocial and societal considerations have ... crystallized as a result of the experiences of a ... writer and magazine editor of the popular Saturday Review, ...
... / b3c newswire / - Addressing significant product safety and ... has announced the commercial launch of two protease-free ... Albumin-DX (Lipid-Free) perform better in diagnostics applications than ... serum albumin (pHSA).  , , ...
... is a tragic disease that robs an individual of their memory ... 65 now suffer from the disease and one in two people ... Alzheimer,s does not only affect the elderly. Familial Alzheimer,s disease (FAD), ... The Study , Alzheimer,s is a complex ...
Cached Biology News:Laughter remains good medicine 2Laughter remains good medicine 3InVitria Announces Launch of Recombinant Albumin for Diagnostics 2Computational model examines the pathways of Alzheimer's that strikes at the young 2
(Date:8/29/2014)... 29, 2014  Pfenex Inc. (NYSE MKT: PFNX), ... of high-value and difficult to manufacture proteins including ... reported financial results for the second quarter ended ... completion of our initial public offering, we have ... product candidates, derived from our proprietary protein expression ...
(Date:8/29/2014)... 29, 2014 The global companion ... in 2019. It is expected to grow at ... and was valued at $1.8 billion in 2013, ... Market Research. , For more information regarding analysis ... , The research report, titled “Companion Diagnostics Market ...
(Date:8/29/2014)... Pittsburgh, PA (PRWEB) August 29, 2014 ... Chairman, Hub MacDonald, and colleague Koichiro Matsuda, Horiba Scientific, ... JASIS on September 5, 2014. JASIS , Asia’s ... September 3-5, 2014, in Makuhari Messe, Japan. , ... New Tools for Bioanalysis from Single Molecules to Single ...
(Date:8/29/2014)... 2014 Local veterinarian, Dr. Keith Clement, ... seeking candidates to participate in an investigational study of ... ultimate goal of this study is to determine if ... or two arthritically affected joints can help reduce pain ... for the current investigational study must be older than ...
Breaking Biology Technology:Pfenex Reports Second Quarter 2014 Results and Provides Business Update 2Pfenex Reports Second Quarter 2014 Results and Provides Business Update 3Pfenex Reports Second Quarter 2014 Results and Provides Business Update 4Pfenex Reports Second Quarter 2014 Results and Provides Business Update 5Pfenex Reports Second Quarter 2014 Results and Provides Business Update 6Pfenex Reports Second Quarter 2014 Results and Provides Business Update 7Pfenex Reports Second Quarter 2014 Results and Provides Business Update 8Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... today its financial results for the year ending 31,December 2008. , , ... regulatory process for intravenous iclaprim in US, - ... of "intravenous-to-oral" Phase II trial with oral, ... - Share placing, Cash and financial investments of ...
... better restaurant menu optionsINDIANAPOLIS, Feb. 25 This year,s ... America with the reduction of nearly a half billion ... three years. Since the market introduction in 2006, Omega-9 ... replaced more than 340 million pounds of trans fat, ...
... collaborative agreement with CureDM to continue the preclinical development of CureDM,s HIP2B ... , ... Cary, NC (PRWEB) February 25, 2009 -- Calvert ... the signing of a collaborative agreement with CureDM to continue ...
Cached Biology Technology:Arpida Announces Full Year 2008 Financial Results 2Arpida Announces Full Year 2008 Financial Results 3Arpida Announces Full Year 2008 Financial Results 4Arpida Announces Full Year 2008 Financial Results 5Heart Health Month Milestone: Half a Billion Pounds of Bad Fats Eliminated From North American Diet 2Heart Health Month Milestone: Half a Billion Pounds of Bad Fats Eliminated From North American Diet 3Calvert Research and CureDM Sign Collaborative Agreement 2Calvert Research and CureDM Sign Collaborative Agreement 3
Mouse monoclonal antibody raised against a partial recombinant DENR. NCBI Entrez Gene ID = DENR...
Mouse monoclonal antibody raised against a partial recombinant CRKRS. NCBI Entrez Gene ID = CRKRS...
... BD PhosFlow Perm/Wash Buffer I can be ... signaling proteins to permeabilize cells and to ... wash buffer. Because saponin-mediated cell permeabilization is ... keep the cells in the presence of ...
Mouse monoclonal antibody raised against a full length recombinant GPT. NCBI Entrez Gene ID = GPT...
Biology Products: