Navigation Links
Genital stimulation opens door for cryptic female choice in tsetse flies
Date:5/14/2009

By snipping off parts of male genitalia and reducing genital sensation in both male and female tsetse flies, researchers induced a suite of changes in female reproduction, including reduced ovulation, reduced sperm storage and increased re-mating attempts by the females. "To the best of our knowledge, this was the first study to look at female choice following experimental manipulation of both male and female genitalia," said William Eberhard, staff scientist at the Smithsonian Tropical Research Institute and professor of biology at the University of Costa Rica.

Cryptic female choicethe ability of females to control which sperm reaches their eggs during and after the mating processleads to rapid evolutionary changes in genital structure and is probably influenced by the number of times a female mates with different males.

"The tsetse fly Kama Sutra is long and elaborate," said Eberhard, who described the 30-minute ritual during which the male rubs the underside of the female's abdomen with his hind legs, sings to her by buzzing his wings, rubs her eyes with his front legs, and so on.

With Daniel Briceo, professor of biology at the University of Costa Rica, Eberhard modified male genital structures by cutting off a tooth that is typical of this species of tsetse fly and by smoothing a bristly surface by applying a coat of nail polish. In addition, they modified the sensations perceived by the female from these structures by altering the female sense organs on the portions of her body that these male structures contact during copulation. "We were surprised by the number of female processes that were influenced by modifying the stimuli received by the female from the male's genitalia," said Eberhard.


'/>"/>

Contact: Beth King
kingb@si.edu
703-487-3770 x8216
Smithsonian Tropical Research Institute
Source:Eurekalert  

Page: 1

Related biology news :

1. Folic acid to prevent congenital heart defects
2. Potential therapy for congenital muscular dystrophy
3. Hairspray is linked to common genital birth defect, says study
4. OSAs ISP launches with research on breathing disorders and congenital heart defects
5. Latest advances in interventional cardiology for congenital heart disease presented
6. Embryo biopsy does not affect early growth and risk of congenital malformations in PGD/PGS babies
7. Potential therapy discovered for hypophosphatasia, a congenital form of rickets
8. New book gives a human face to children with congenital heart disease
9. Coating improves electrical stimulation therapy used for Parkinsons, depression, chronic pain
10. Mobile Communication Market Opens up for Biometrics - Precise Biometrics Awarded 1st Prize at GSMA World Mobile Congress
11. Tiny tool to control growing blood vessels opens new potential in tumor research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Genital stimulation opens door for cryptic female choice in tsetse flies
(Date:6/2/2016)... , June 2, 2016   The Weather Company , ... Watson Ads, an industry-first capability in which consumers will be ... able to ask questions via voice or text and receive ... Marketers have long sought an advertising ... that can be personal, relevant and valuable; and can scale ...
(Date:5/20/2016)... 20, 2016  VoiceIt is excited to announce ... By working together, VoiceIt and VoicePass ... and VoicePass take slightly different approaches to voice ... security and usability. ... new partnership. "This marketing and technology ...
(Date:5/3/2016)...  Neurotechnology, a provider of high-precision biometric identification ... Identification System (ABIS) , a complete system for ... can process multiple complex biometric transactions with high ... face or iris biometrics. It leverages the core ... MegaMatcher Accelerator , which have been used in ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... ... While the majority of commercial spectrophotometers and fluorometers use the z-dimension of ... higher end machines that use the more unconventional z-dimension of 20mm. Z-dimension ... of the cuvette holder. , FireflySci has developed several Agilent flow cell product ...
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, one of ... their brand, UP4™ Probiotics, into Target stores nationwide. The company, which has been ... Target to its list of well-respected retailers. This list includes such fine stores ...
(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)... -- The Prostate Cancer Foundation (PCF) is pleased to announce 24 new ... prostate cancer. Members of the Class of 2016 were selected from a pool ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology: