Navigation Links
Male Australian redback spiders employ courtship strategies to preserve their life
Date:10/22/2009

TORONTO, October 22, 2009 New research shows that male suitors of a female cannibalistic spider risk facing a premature death unless they perform an adequate courtship lasting a minimum of 100 minutes. Further, the research shows that "sneaker" males can slip by and mate successfully on the courtship efforts of the hard-working first suitor.

Scientists at the University of Toronto Scarborough have published a research paper titled "Female's courtship threshold allows intruding males to mate with reduced effort" in the prestigious journal, Proceedings of the Royal Society B. The study provides new findings on the mating habits of the poisonous Australian redback spider (Lactrodectus hasselti), a member of the black widow family where females are larger in size compared to males.

According to the research, if a male tries to mate without investing sufficient time and energy in courtship, the female spider will kill him and mate with his rival. However, weaker males, or those looking to expend little energy, have found a way to reap the rewards of the more committed suitor.

"The second 'sneaker' male slips by and mates successfully, essentially acting as a parasite on the effort of the first, hard-working male," explains Maydianne Andrade, associate professor and Canada Research Chair of the Integrative Behaviour and Neuroscience group at the University of Toronto Scarborough.

"One of the surprising outcomes from the study is that females are unable or unwilling to discriminate the sources of courtship," said Jeffrey Stoltz, PhD candidate in the department of biological sciences at U of T Scarborough and co-author of the study. "This has provided the opportunity for intruding males to exploit the reproductive efforts of rivals and thereby circumvent female choice."

Adds Andrade, "Female choice using thresholds have been predicted in theory, but this is one of a few quantitative demonstrations of such a decision rule in action and the first to show that males can use the female's decision rule to exploit the reproductive efforts of rivals."


'/>"/>

Contact: Eleni Kanavas
ekanavas@utsc.utoronto.ca
416-208-5103
University of Toronto
Source:Eurekalert

Related biology news :

1. Australian study sheds light on kidney repair and disease
2. Energy experts helping Australian households reduce carbon emissions
3. Australian filmmakers are stars of science film awards
4. Crafty Australian crayfish cheat
5. Australian frog species chooses not to put eggs in 1 basket
6. Oldest Australian crayfish fossils provide missing evolutionary link
7. Fertilizer research center an Australian first
8. Australian researchers develop treatment to treat obesity
9. Invasive Australian jellyfish sighted in Gulf of Mexico in summer 2007
10. Scary ancient spiders revealed in 3-D models, thanks to new imaging technique
11. New species of spiders discovered by UBC scientist in Papua New Guinea
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/15/2016)... April 15, 2016  A new partnership announced ... accurate underwriting decisions in a fraction of the ... priced and high-value life insurance policies to consumers ... With Force Diagnostics, rapid testing (A1C, Cotinine ... readings (blood pressure, weight, pulse, BMI, and activity ...
(Date:3/31/2016)... 2016  Genomics firm Nabsys has completed a financial ... Bready , M.D., who returned to the company in ... leadership team, including Chief Technology Officer, John Oliver ... Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys from ...
(Date:3/21/2016)... WAKEFIELD, Massachusetts , March 22, 2016 ... and facial recognition with passcodes for superior security ... MESG ), a leading provider of secure digital communications ... pilot their biometric technology and offer enterprise customers, particularly ... provide secure facial recognition and voice authentication within a ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... April 27, 2016 , ... ... its Scientific Advisory Board. Dr. Lamka will assist PathSensors in expanding the use ... , PathSensors deploys the CANARY® test platform for the detection of harmful pathogens, ...
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... Global ... mutual endorsement of an Asia-Pacific Symposium as other research and development initiatives for potential ... Santiago officials and top Global Stem Cells Group executives began meeting to establish a ...
(Date:4/26/2016)... ... April 27, 2016 , ... ... Roca Rothgerber Christie LLP as an associate in the firm’s Intellectual Property practice ... electrical, mechanical and electromechanical patent applications. He has an electrical engineering and computer ...
(Date:4/26/2016)... ... 26, 2016 , ... Heidelberg Instruments, a leader in design, ... its Volume Pattern Generator (VPG) line of lithography systems. The breakthrough VPG+ system ... as a solution for mid volume direct write lithography applications. It utilizes ...
Breaking Biology Technology: