HOME >> BIOLOGY >> NEWS
Parasite's sperm-encryption keeps species apart

Scientists have found the most convincing evidence yet that a parasite can contribute to splitting a species in two, thanks to a phenomenon where a wasps damaged sperm can be rescued or fixed only by mating with particular females. A bacterium called Wolbachia prevents the successful development of embryos in matings between two very closely related wasp species that could otherwise produce viable offspring. In the February 8th issue of Nature, University of Rochester researchers show that the bacteriums species-splitting effect came before any other in the wasps, strongly suggesting that the parasite accelerated the natural evolution of the insect. The research was conducted by two graduate students, Seth Bordenstein and Patrick OHara, and led by John Werren, professor of biology.

Wolbachia propagates itself in an unusual manner: Instead of merely helping its host compete against non-infected hosts as many parasites do, Wolbachia actively seeks to eliminate non-infected hosts by stopping them from reproducing. To do this, the parasite alters the sperm of its male host, rendering it infertile when paired with an uninfected female. If, however, the male mates with an infected female, the damaged reproductive cells are rescued by the females parasite. Its as if the bacterium encodes the sperm cell, rendering it useless unless it encounters the de-coding bacterium from another infected wasp. The result is that infected males can only impregnate other infected females, not uninfected ones, and makes it difficult for uninfected females to find a compatible mate.

The trickery is part of a wider system that assures that as many wasps as possible will pass Wolbachia on to the next generation. Infected males can have offspring only with infected females, and infected females automatically pass the infection on to all their offspring. The only possibility for producing uninfected offspring is for two uninfected wasps to mate.

This is the best evidence o
'"/>

Contact: Jonathan Sherwood
jsherwood@admin.rochester.edu
716-273-4726
University of Rochester
7-Feb-2001


Page: 1 2 3

Related biology news :

1. Parasites enzyme structure helps address a public health issue
2. Genetically-engineered marathon mouse keeps on running
3. Coordinating power of circadian rhythms keeps estrus and pregnancy on track
4. A gene that keeps species apart
5. Protein keeps cold fish from becoming frozen flounder, new study shows
6. An apple a day keeps the doctor away . . . but so may a cigarette
7. An aspirin a day keeps Staphylococcus aureus away
8. Protein discovered that keeps hemoglobin in balance
9. What keeps the nervous system intact?
10. Cannibalism in the North Atlantic: Scripps researcher finds crustacean species keeps population in check by eating its young
11. Scientists determine how chemistry keeps weird worms "out of hot water" at steaming deep-sea vents

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Parasite sperm encryption keeps species apart

(Date:11/11/2014)... 11, 2014  Forensicon, Inc., a Chicago ... to announce the promotion of Yaniv Schiff ... Forensics. In Schiff,s new role as Director, he will ... digital forensics examiners and provide leadership within the company,s ... http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined Forensicon ...
(Date:11/7/2014)... professor, biomedical engineering, in the Grove School of ... have identified a molecule that could lead to ... forms of breast cancer. , Triple negative breast ... to aggressive proliferation and metastasis and a lack ... discovered the overexpression of intercellular adhesion molecule-1 (ICAM-1) ...
(Date:11/7/2014)... November 6, 2014 Leading Biometric companies ... mobile security revolutionizing online transactions.  Companies in focus today are: ... (NYSE: BABA ), Google Inc. (NASDAQ: ... Inc. (NASDAQ: EBAY ) and MasterCard Inc. (NYSE: ... and NXTDW), a biometric authentication company focused on the growing ...
Breaking Biology News(10 mins):Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 3Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 4Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 5Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 6
(Date:11/22/2014)... 2014 Prominent academics, leaders of ... on December 3rd at Genetic Rx, a networking ... will take place at the Joseph B. Martin ... discuss the present and future of genetic medicines—including ... gene editing—as well as the treatment of patients ...
(Date:11/22/2014)... MD (PRWEB) November 21, 2014 ... management solutions provider, has released Limfinity® version 5.1.4. ... installation projects of Limfinity® than ever in RURO’s ... configuration and minority framework enhancement. Limfinity® version 5.1.4 ... far above and beyond bug fixes! , Limfinity® ...
(Date:11/22/2014)... (PRWEB) November 22, 2014 The ... Analytical, Preparative), by Material (Metal, Glass, Plastic), by ... TLC, SFC] - Forecast to 2018” analyses and ... challenges in North America, Europe, Asia, and Rest ... tables and 15 figures spread through 135 pages ...
(Date:11/22/2014)... , Nov. 21, 2014  The element of ... emerging diseases, i.e., they strike without warning. Until now, ... warning of a viral outbreak, resulting in suboptimal responses ... Ebola currently. Photo - http://photos.prnewswire.com/prnh/20141121/160242 ... has now been removed because virus gene structural changes ...
Breaking Biology Technology:Pioneering Academics and Key Industry Leaders to Discuss Rare Diseases and the Emergence of New Genetic Medicines at Genetic Rx on December 3rd 2RURO Announces Limfinity® version 5.1.4 2Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 2Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 3Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 4Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 5Viruses' Advantage of Surprise is Lost 2
Cached News: