Featured Research

from universities, journals, and other organizations

Precise Role Of Seminal Proteins In Sustaining Post-mating Responses In Fruit Flies

Date:
December 21, 2007
Source:
Public Library of Science
Summary:
Successful reproduction is critical to pass genes to the next generation. In sexually reproducing organisms, sperm enter the female with seminal proteins that are vital for fertility. Scientists have now knocked down the levels of 25 seminal proteins individually in male fruit flies, testing the males' abilities to modulate egg production, sperm storage and release, and the females' post-mating behavior and physiology.

Successful reproduction is critical to pass genes to the next generation. In sexually reproducing organisms, sperm enter the female with seminal proteins that are vital for fertility.

In a new study, researchers at Cornell University knocked down the levels of 25 seminal proteins individually in male fruit flies, testing the males' abilities to modulate egg production, sperm storage and release, and the females' post-mating behavior and physiology.

Ram and Wolfner found five seminal proteins that are necessary to elevate offspring production in mated females. CG33943 is required for full stimulation of egg production on the first day after mating. Four other individual accessory gland proteins (CG1652, CG1656, CG17575, and CG9997) appear to modulate the long-term response, namely the maintenance of post-mating behavior and physiological changes.

These four are in biochemical classes that are conserved in seminal fluid from insects to humans, suggesting they may play similar sperm-related roles in other animals.

Better understanding the action of seminal proteins and the part they play in optimal reproductive output could lead to progress in insect pest control and the diagnosis of certain human infertilities.

Journal citation: Ram KR, Wolfner MF (2007) Sustained Post-Mating Response in Drosophila melanogaster Requires Multiple Seminal Fluid Proteins. PLoS Genet 3(12): e238 doi:10.1371/journal.pgen.0030238


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Cite This Page:

Public Library of Science. "Precise Role Of Seminal Proteins In Sustaining Post-mating Responses In Fruit Flies." ScienceDaily. ScienceDaily, 21 December 2007. <www.sciencedaily.com/releases/2007/12/071218101230.htm>.
Public Library of Science. (2007, December 21). Precise Role Of Seminal Proteins In Sustaining Post-mating Responses In Fruit Flies. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2007/12/071218101230.htm
Public Library of Science. "Precise Role Of Seminal Proteins In Sustaining Post-mating Responses In Fruit Flies." ScienceDaily. www.sciencedaily.com/releases/2007/12/071218101230.htm (accessed September 2, 2014).

Share This




More Plants & Animals News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Washington Wildlife Center Goes Nuts Over Baby Squirrels

Washington Wildlife Center Goes Nuts Over Baby Squirrels

Reuters - US Online Video (Aug. 30, 2014) An animal rescue in Washington state receives an influx of orphaned squirrels, keeping workers busy as they nurse them back to health. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Newsy (Aug. 29, 2014) In a new study, a promising experimental treatment for Ebola managed to cure a group of infected macaque monkeys. Video provided by Newsy
Powered by NewsLook.com
Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins