Navigation Links
Biologists identify influence of environment on sexual vs. asexual reproduction
Date:10/14/2010

TORONTO, ON Evolutionary biologists at the University of Toronto (U of T) have found that environment plays a key role in determining whether a species opts for sexual over asexual reproduction.

The study, led by post-doctoral student Lutz Becks and Professor Aneil Agrawal of the Department of Ecology & Evolutionary Biology, found that species that inhabit spatially heterogenous environments habitats characterized by uneven concentrations of its own species among a rich variety of other animals and plants had higher rates of sexual reproduction than those in more homogenous environments.

"Sexual reproduction is pervasive across the tree of life," says Agrawal. "One of the classic questions in evolutionary biology is to determine why most organisms reproduce sexually rather than asexually. Whatever evolutionary force maintains this mode of reproduction across such a diversity of life must be one of the most powerful and important factors in biology. Our work suggests that spatial heterogeneity is one of these key factors."

Furthermore, sexual reproduction resulted in organisms that are adept across different environments, with different characteristics and more robust genetic constitutions than their asexually-reproducing counterparts.

"Put simply, sexual reproduction helps create genotypes that are better able to survive across different environments. In contrast, asexual reproduction yields types that are suited to only one environment," says Agrawal."

The scientists conducted their experiments with rotifers small aquatic organisms that are capable of both sexual and asexual reproduction. They allowed populations of rotifers to evolve in habitats that were either environmentally homogeneous or heterogeneous. Over a span of more than 70 generations, the tendency for sexual reproduction persisted at much higher levels in heterogeneous habitats and declined rapidly in homogeneous environments


'/>"/>

Contact: Sean Bettam
s.bettam@utoronto.ca
416-946-7950
University of Toronto
Source:Eurekalert

Page: 1

Related biology news :

1. Caltech biologists spy on the secret inner life of a cell
2. Biologists, educators recognize excellence in evolution education
3. Caltech geobiologists discover unique magnetic death star fossil
4. Biologists discover gene behind plant sex mystery
5. Queens University biologists find new environmental threat in North American lakes
6. Biologists learn structure, mechanism of powerful molecular motor in virus
7. Biologists discover link between CGG repeats in DNA and neurological disorders
8. Biologists solve mystery of black wolves
9. Cleaning up oil spills can kill more fish than spills themselves, say Queens biologists
10. Plant biologists discover gene that switches on essence of male
11. Two innovative University of Texas at Austin biologists become HHMI Early Career Scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2016)... April 20, 2016 The new ... a compact web-based "all-in-one" system solution for all door ... reader or the door interface with integration authorization management ... control systems. The minimal dimensions of the access control ... the building installations offer considerable freedom of design with ...
(Date:4/15/2016)... Research and Markets has announced ... 2016-2020,"  report to their offering.  , ... global gait biometrics market is expected to grow ... 2016-2020. Gait analysis generates multiple variables ... to compute factors that are not or cannot ...
(Date:4/13/2016)... April 13, 2016  IMPOWER physicians supporting Medicaid patients ... a new clinical standard in telehealth thanks to a ... the higi platform, IMPOWER patients can routinely track key ... body mass index, and, when they opt in, share ... visit to a local retail location at no cost. ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical journal ... Their findings are the subject of a new article on the Surviving Mesothelioma website. ... the blood, lung fluid or tissue of mesothelioma patients that can help point doctors ...
(Date:6/23/2016)... SPRING, Md. , June 23, 2016 A ... collected from the crime scene to track the criminal down. ... and the U.S. Food and Drug Administration (FDA) uses DNA ... Sound far-fetched? It,s not. The ... genome sequencing to support investigations of foodborne illnesses. Put as ...
(Date:6/23/2016)... FRANCISCO , June 23, 2016   EpiBiome ... has secured $1 million in debt financing from Silicon ... ramp up automation and to advance its drug development ... its new facility. "SVB has been an ... beyond the services a traditional bank would provide," said ...
(Date:6/23/2016)... 2016  Blueprint Bio, a company dedicated to identifying, ... community, has closed its Series A funding round, according ... "We have received a commitment from Forentis Fund ... to meet our current goals," stated Matthew Nunez ... to complete validation on the current projects in our ...
Breaking Biology Technology: