Navigation Links
In fireflies, flightless females lose out on gifts from males
Date:4/5/2011

es it change the division of reproductive labor between the sexes? That is, do firefly males still give nuptial gifts?

"These females are definitely committed to being 'stay-at-home-moms' because they're basically a huge sac of eggs," said Sara Lewis, professor of biology at Tufts and co-author of the paper. By giving up wings, such flightless females can devote all their energy to churning out eggs and so gain an advantage over their winged cousins.

"Since wingless females would already enjoy high reproductive output, we thought males might no longer need to support their partners' reproduction with added nutrients," explained Tufts doctoral candidate Adam South, the lead author on the paper.

Working with firefly experts from around the world, the Tufts biologists studied the reproductive structures of 32 different species. They confirmed that in those with flying females, males did bestow nuptial gifts. In most species with flightless females, however, the males did not do so.

Looking Back at the First Fireflies

The researchers also peered back in time to the first fireflies.

In collaboration with colleagues in Georgia and Taiwan, the Tufts biologists used existing knowledge of the evolutionary relationships among different firefly species to examine how flight and nuptial gifts have changed over time.

In very early fireflies, the biologists discovered, females sported normal wings and accepted nuptial gifts from their male suitors. But the evolutionary tree also showed that nearly every time females stopped flying around, their partners retreated to transferring only sperm, revealing a surprising evolutionary correlation between these male and female traits.

So just like people, firefly couples also adjust how much effort each one will devote to work -- flight in this case -- or to family. With stay-at-home moms investing more in reproduction, some firefly males apparently decid
'/>"/>

Contact: Kim Thurler
kim.thurler@tufts.edu
617-627-3175
Tufts University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study first to pinpoint why analgesic drugs may be less potent in females than in males
2. Reproductive life of male mice is increased by living with females
3. Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrigs disease
4. Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrigs disease
5. Pesky fruit flies learn from experienced females: Study
6. Exposure to young triggers new neuron creation in females exhibiting maternal behavior
7. Pesticide atrazine can turn male frogs into females
8. Females shut down male-male sperm competition in leafcutter ants
9. Male antelopes deceive females to increase their chances of mating
10. Male antelopes trick females into extra sex opportunities
11. Differences in brain development between males and females may hold clues to mental health disorders
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
In fireflies, flightless females lose out on gifts from males
(Date:7/30/2015)... MOUNTAIN VIEW, Calif. , July 30, 2015 ... products and services for gene function analysis and ... CRISPR Guide RNA (sgRNA) Knockout Library targeting all ... to specifically and permanently "knock out" a gene,s ... library provides a high throughput screening tool so ...
(Date:7/23/2015)... Inc. (NASDAQ: AWRE ), a leading supplier of biometrics ... quarter ended June 30, 2015.  Revenue for ... of 33% compared to $6.8 million in the same quarter ... was $0.3 million, or $0.01 per diluted share, which compared ... same period a year ago.  Lower revenue ...
(Date:7/21/2015)... , July 21, 2015  NXT-ID, Inc. ... a biometric authentication company focused on the growing ... smart wallet, announces that it has filed provisional ... and Method. This invention highlights ... only authorizes an account, but also the user ...
Breaking Biology News(10 mins):CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2Aware, Inc. Reports Second Quarter 2015 Financial Results 2Aware, Inc. Reports Second Quarter 2015 Financial Results 3Aware, Inc. Reports Second Quarter 2015 Financial Results 4Aware, Inc. Reports Second Quarter 2015 Financial Results 5Aware, Inc. Reports Second Quarter 2015 Financial Results 6NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4
... a new bacterium in pigs, stomachs thanks to a ... who suffer with stomach ulcers, according to research published ... Systematic and Evolutionary Microbiology. The bacterium that commonly ... Extensive research has been carried out on this bacterium ...
... at UCLA,s Jonsson Comprehensive Cancer Center have modified a common ... Tomography (PET), an advance that will allow them to model ... to new therapies. The discovery, published June 8, 2008 ... enables scientists to monitor the immune system at the ...
... challenges is to understand the design principles and origins ... on the evolutionary origins of the brain and how ... humans. The research suggests that it is not ... during evolution, increasingly sophisticated molecular processing of nerve impulses ...
Cached Biology News:New pathogen from pigs' stomach ulcers 2UCLA researchers develop new PET scanning probe that will allowing monitoring of the immune system 2UCLA researchers develop new PET scanning probe that will allowing monitoring of the immune system 3Origins of the brain 2Origins of the brain 3
(Date:7/31/2015)... HONG KONG , July 31, 2015 ... "Company"), China,s leading provider of ... and stem cell storage services, today announced that the ... with the U.S. Securities and Exchange Commission. The filed ... year ended March 31, 2015. The Form 20-F can ...
(Date:7/30/2015)... 30, 2015   GenoSpace , a leading ... and analysis of genomic and other biomedical data, ... joined the company as Vice President of Sales ... "GenoSpace partners with its ... analyze and explore complex sets of genomic, phenotypic ...
(Date:7/30/2015)... ... July 30, 2015 , ... ... field clinical study of its canine osteoarthritis stem cell product, currently under development ... City, KS) and will be marketed in the US by Aratana. This product, ...
(Date:7/30/2015)... Denmark , July 30, 2015 ... biotechnology company that applies its innovative TransCon technology ... positive top-line results from a six-month Phase 2 ... once-weekly TransCon Growth Hormone in 53 treatment-naïve, pre-pubertal ... "We are extremely pleased with the top-line ...
Breaking Biology Technology:China Cord Blood Corporation Files Its Annual Report on Form 20-F 2GenoSpace Introduces Matthew Fischer as Vice President of Sales and Marketing 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7
... April 10, 2012  Mars, Incorporated, as an official ... to science across its Petcare, Chocolate, Wrigley, Food ... the world,s leading food companies, it is seeking ... scientific knowledge, leadership and collaboration. TEDMED ...
... BioSciences, Inc. ("Company") (OTCQB: SVFC.PK) announced today that the Company ... 21 of Thailand, http://www.StemCells21.com . Stem Cells 21 ... of the College of Anti-ageing Medicine and a member ... the Managing Director for the Stem Cells 21.  They ...
... Southern California Marshall School of Business, ranked among the nation,s ... of Business Leadership Summit to be held on April ... Angeles, newest landmark, the JW Marriot—just steps away from L.A. ... A new dynamic format will keep interest high as panelists ...
Cached Biology Technology:Mars, Incorporated Answers Question: 'How Does Feeding People and Pets Nurture Science and Discovery?' At TEDMED 2012 2Mars, Incorporated Answers Question: 'How Does Feeding People and Pets Nurture Science and Discovery?' At TEDMED 2012 3Mars, Incorporated Answers Question: 'How Does Feeding People and Pets Nurture Science and Discovery?' At TEDMED 2012 4IntelliCell BioSciences Signs Technology Licensing Agreement with Stem Cells 21 Thailand 2USC Marshall School of Business 6th Annual Leadership Summit 2USC Marshall School of Business 6th Annual Leadership Summit 3
This antibody is specific for human J-chain as defined by ELISA assay using purified human immunoglobulin fragments as solid phase target antigen....
Agarose, Biotechnology grade, 500g...
... for covering tissue sections and cell preparations immunohistochemically ... insoluble end products. UltraMount Plus can ... or AEC that require an aqueous mounting medium, ... No heating is required prior to use. This ...
... eBioscience Intracellular (IC) Fixation Buffer, used ... (Cat. No. 00-8333), can be used ... to performing intracellular staining of cytokines ... These solutions have been specially formulated ...
Biology Products: