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:4/4/2017)... NEW YORK , April 4, 2017   ... solutions, today announced that the United States Patent and ... The patent broadly covers the linking of an iris ... the same transaction) and represents the company,s 45 th ... our latest patent is very timely given the multi-modal ...
(Date:3/29/2017)... March 29, 2017  higi, the health IT company ... North America , today announced a Series ... acquisition of EveryMove. The new investment and acquisition accelerates ... tools to transform population health activities through the collection ... higi collects and secures data today on ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by ... Global Forecast to 2022", published by MarketsandMarkets, the market is expected to be ... 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:6/20/2017)... (PRWEB) , ... June 20, 2017 , ... ... Linda Robbie, PhD, a well-versed leader with extensive assay development and biomarker expertise, ... Cambridge Biomedical is a Boston CRO specializing in bio-analytical assay development and sample ...
(Date:6/19/2017)... Princeton, NJ (PRWEB) , ... June 19, 2017 ... ... responsible for overseeing all service activities supporting EDETEK’s products including training, implementation, support, ... industry experience to his new role. He has previously held leadership roles for ...
(Date:6/19/2017)... Iowa (PRWEB) , ... June 19, 2017 , ... A ... interplay among its cells and tissues by delivering pollen and nectar containing nutrients necessary ... the means to stay healthy. , Many recent indicators point to a decline in ...
(Date:6/16/2017)... ... June 16, 2017 , ... CTNext , Connecticut’s ... Awards (EIA), held at The LOFT at Chelsea Piers in Stamford. , Nine finalists, ... a panel of judges for an opportunity to secure $10,000 awards to help support ...
Breaking Biology Technology: