Navigation Links
Bizarre insect inbreeding signals an end to males: News tips from the American Naturalist
Date:7/27/2011

Bizarre insect inbreeding signals an end to males

A bizarre form of inbreeding could spell the end of males in one insect species, according to researchers from Oxford University. The research focused on cottony cushion scales, a hermaphroditic bug species in which females appear to fertilize their own eggs. "It turns out that females are not really fertilizing their eggs themselves, but instead are having this done by a parasitic tissue that infects them at birth," said Laura Ross, one of the study's authors. "It seems that this infectious tissue derives from leftover sperm from their fathers." In effect, the tissue enables males to father offspring with both their mates and then their daughters. According to a mathematical model developed by Ross and her co-author Andy Gardner, this odd reproductive tactic could eliminate the need for males in the species. Once the parasitic fathers become widespread in a population, females will be inclined to reproduce with them instead of regular males. Regular males, as a result, become very rare because they have a hard time finding willing mates.

Andy Gardner and Laura Ross, "The Evolution of Hermaphroditism by an Infectious Male-Derived Cell Lineage: An Inclusive-Fitness Analysis."


Without competition, island frogs evolve rapidly

Scientists led by Ben Evans of McMaster University have documented the rapid evolution of new fanged frog species on the island of Sulawesi, near the Philippines. The team found 13 species of fanged frog on the island, nine of which hadn't previously been described. The species differ in body size, amount of webbing in their feet, and even how they raise their youngall in accordance with the demands of their distinct ecological niches. Sulawesi has the same number of fanged frog species as the Philippine archipelago. "We would expect to find more species on the archipelago because it's so much larger, but that's not the case," Ev
'/>"/>

Contact: Kevin Stacey
kstacey@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scripps scientists see the light in bizarre bioluminescent snail
2. UF research provides new understanding of bizarre extinct mammal
3. Bizarre walking bat has ancient heritage
4. Brain structure provides key to unraveling function of bizarre dinosaur crests
5. Mysterious fossils provide new clues to insect evolution
6. Landscape change leads to increased insecticide use in US Midwest
7. Landscape change leads to increased insecticide use in the Midwest
8. Biocides that attack only insects
9. Entomologists launch the 5,000 Insect Genome Project (i5k)
10. Small insects attacks and kill amphibians much bigger than themselves
11. Family-Group Names in Coleoptera (Insecta) published by Pensoft
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bizarre insect inbreeding signals an end to males: News tips from the American Naturalist
(Date:7/31/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... growing mobile commerce market and creator of the Wocket® ... 62/198989 for ELECTRONIC CRYPTO-CURRENCY MANAGEMENT METHOD AND ... advance crypto-currencies such as Bitcoin into the consumer market ... to manage all payments.  The technology ...
(Date:7/23/2015)... BEDFORD, Mass., July 23, 2015 Aware, Inc. (NASDAQ: ... services, today reported financial results for its second quarter ended ... quarter of 2015 was $4.5 million, a decrease of 33% ...  Net income in the second quarter of 2015 was $0.3 ... million, or $0.04 per diluted share, in the same period ...
(Date:7/20/2015)... , July 20, 2015  Acuity Market Intelligence,s ... The Convergence of Commerce and Privacy" forecasts that ... biometric apps will be downloaded to smart mobile ... mobile biometrics market is projected to generate more ... during the seven-year forecast period.    ...
Breaking Biology News(10 mins):NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4Aware, 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 6Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2
... and students will come together at the Fine Conference ... Mellon University to explore how science research and education ... large digital images containing billions of pixels. , Alan ... Worden, director of NASA,s Ames Research Center, and Mark ...
... to be presented at the EORTC-NCI-AACR [1] Symposium on "Molecular targets ... meeting at 00.01 hrs CET on Friday 29 October. The Symposium ... to report on the online abstracts from the time that they ... mind that all the abstracts had to be submitted by 15 ...
... in French . Quebec City, October ... death of pancreatic cells and could increase the risk of ... Laval,s Faculty of Pharmacy. Details of this discovery were recently ... . In vitro tests conducted by Professor Frdric Picard ...
Cached Biology News:'Science never seen before' is focus of first scientific conference on gigapixel imaging 2Abstracts for the EORTC-NCI-AACR Symposium in Berlin go up online on Friday, Oct. 29 2Glucosamine causes the death of pancreatic cells 2
(Date:7/30/2015)... ST. LOUIS, July 30, 2015 ... period in 2014) , Reported sales were $697 ... of 2014.  Sales grew organically by 8%, and changes ... Recent acquisitions increased sales by 1%. , By ... 8% in Applied and 11% in SAFC Commercial. ...
(Date:7/30/2015)... , ... July 30, 2015 , ... As part of its 2015 growth plan and ... and technical service business units, Whitehouse Laboratories is pleased to announce that it ... to the Container Center of Excellence and will be strictly dedicated to basic USP 51, ...
(Date:7/29/2015)... July 30, 2015 Sanofi, ... for the second quarter of 2015. CEO ... and its performance in different businesses. ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics covered in ... - Performance drivers - ...
(Date:7/29/2015)... July 30, 2015 According to a ... Growth, Trends & Forecasts (2015-2020), , published by Mordor Intelligence, ... billion by the end of 2020, with North ... more than 40% of the global market size. The Global ... CAGR of 13.7% during the period of (2015-2020). ...
Breaking Biology Technology:Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 2Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 3Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 4Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 5Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 6Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 7Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 8Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 9Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 10Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 11Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 12Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 13Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 14Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 15Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 16Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 17Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 18Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 19Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 20Whitehouse Labs Formally Announces Plans to Open a Microbiological Laboratory 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3
... owe their existence to a pair of information-carrying molecules: ... features essential for life: they display hereditymeaning they can ... adapt over time, through processes of Darwinian evolution. ... could be performed by molecules other than DNA and ...
... N.C. -- By developing software that uses 3-D models of ... Duke University has identified several new molecules that may ease ... created by the team predict how well a given molecular ... in cystic fibrosis. To test the predictions, the scientists synthesized ...
... based on nanoimprinting techniques (NIL) is evolving at a rapid ... overcome in order to reach the market? How do we ... the industry? What are the tools needed for each product? ... tags to life science products were discussed by more than ...
Cached Biology Technology:Strange cousins: Molecular alternatives to DNA, RNA offer new insight into life's origins 2Strange cousins: Molecular alternatives to DNA, RNA offer new insight into life's origins 3Strange cousins: Molecular alternatives to DNA, RNA offer new insight into life's origins 4Computer-designed molecules point to new therapy for cystic fibrosis 2Computer-designed molecules point to new therapy for cystic fibrosis 3Tackling the European market of nanoimprint lithography 2
... is the ultimate in convenience, sensitivity ... been specifically designed to streamline the ... Kit combines the unique Reverse-iT™ Blend ... DNA Polymerase to provide a highly ...
...
... Protein A and Protein G bind specifically ... Protein A and Protein G conjugates are ... immunoglobulins (antibodies) and immunoglobulin subtypes from serum, ... other biological fluids. These reagents are also ...
... wide variety of environmental and pathophysiological stressful ... of proteins known as heat shock proteins ... proteins (SRPs). The Hsp90 family of ... alpha and beta, Grp94, and Trap-1 (Hsp75). ...
Biology Products: