HOME >> BIOLOGY >> NEWS
Divergent mating systems and parental conflict as a barrier to hybridization in flowering plants

Sexual reproduction can be thought of as a cooperative process in which two individuals come together to produce a new individual. It can also be viewed as a process in which two parties with differing interests, investment, and background interact to produce a new individual. From the former perspective, parental interests are unified (both wish to produce vigorous offspring), while the latter suggests possible conflict. This conflict can occur before or after fertilization. Before fertilization, the mother has an interest in picking the best suited father from a larger pool, while all fathers have an interest in being picked. After fertilization, fathers have an interest in maximizing maternal investment in their progeny, while mothers will have an interest in carefully partitioning resources among progeny to maximize their combined success.

A new study in the September issue of The American Naturalist argues that with increased self-fertilization, parental conflict decreases. Consequently, parents from frequently selfing groups should be competitively inferior with respect to this parental conflict. Yaniv Brandvain and David Haig examine crosses between selfing and outcrossing pairs and find that, in most cases, there are pre- and post-zygotic symptoms of outcrossers being "stronger" than selfers with regard to parental conflict. They contend that this competitive imbalance can explain a common pattern of unilateral incompatibility, in which pollen from self-incompatible populations can successfully fertilize ovules of self-compatible individuals, but the reciprocal cross fails. Since both pre- and post-zygotic consequences of this imbalanced conflict can perturb successful fertilization and development, they provide barriers to hybridization and may facilitate speciation.


'"/>

Contact: Carrie Olivia Adams
coa@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
2-Aug-2005


Page: 1

Related biology news :

1. Divergent life history shapes gene expression in brains of salmon
2. Common fungicide causes long-term changes in mating behavior
3. Microfluidic chip helps solve cellular mating puzzle
4. Male chimpanzees prefer mating with old females
5. New research reveals unexpected post-mating gene expression in model lab insect
6. New study examines how sense of smell affects mating and aggression in mice
7. Study in Royal Society journal on link between creativity and mating success
8. Sperm trading can resolve hermaphrodite mating conflicts
9. Same-sex mating by fungi spawned infection outbreak, evidence suggests
10. Weapon performance determines mating success in the collared lizard
11. New study explores the evolution of male parental care and female multiple mating

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
(Date:4/13/2017)... 13, 2017 UBM,s Advanced Design and Manufacturing ... feature emerging and evolving technology through its 3D Printing ... run alongside the expo portion of the event and ... demonstrations focused on trending topics within 3D printing and ... manufacturing event will take place June 13-15, 2017 at the ...
(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... Proscia ... be hosting a Webinar titled, “Pathology is going digital. Is your lab ready?” ... pathology adoption best practices and how Proscia improves lab economics and realizes an ...
(Date:10/11/2017)... Tbilisi, Georgia (PRWEB) , ... October 11, 2017 , ... ... disaster, taking the lives of over 5.5 million people each year. Especially those living ... the greenovative startup Treepex - based in one of the most pollution-affected countries globally ...
(Date:10/10/2017)... ... October 10, 2017 , ... San Diego-based team building ... corporate rebranding initiative announced today. The bold new look is part of a ... company moves into a significant growth period. , It will also expand its service ...
(Date:10/10/2017)... ... 10, 2017 , ... Dr. Bob Harman, founder and CEO of VetStem ... The event entitled “Stem Cells and Their Regenerative Powers,” was held ... Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., Chief ...
Breaking Biology Technology:
Cached News: