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Females tagged in wasp mating game

Date:
January 8, 2013
Source:
Simon Fraser University
Summary:
The flick of an antenna may be how a male wasp lays claim to his harem, according to new research. A team of biologists found that when a male targeted a female, he would approach from her from the left side, and once in range, uses the tip of his antenna to tap her antenna.

The flick of an antenna may be how a male wasp lays claim to his harem, according to new research at Simon Fraser University.

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A team of biologists, led by former PhD graduate student Kelly Ablard, found that when a male targeted a female, he would approach from her from the left side, and once in range, uses the tip of his antenna to tap her antenna.

Ablard suggests the act transfers a yet unidentified specimen-specific pheromone onto the female's antenna that marks the female as "out of bounds," or "tagged."

The tagging-pheromone helps a male relocate the females he tagged, and deters non-tagging males from approaching tagged females.

Males who tag females are much quicker courters than their competitors, and thus are likely in better condition physically, Ablard notes. "It is the first male to encounter a female that is likely perceived by females to be high-quality," she says. "Tagged females' avoidance behavior of 'unfamiliar' males suggests that tagged females attain a fitness advantage."

The research, published in the journal Behavioural Processes, was carried out in a biology lab at SFU over the past several years.

Ablard, who defended her thesis in December and is set to receive her degree this spring, earlier studied olfactory communication in the slender and slow loris, a small nocturnal primate found in southern India and throughout southeast Asia, respectively.

Simon Fraser University is Canada's top-ranked comprehensive university and one of the top 50 universities in the world under 50 years old. With campuses in Vancouver, Burnaby and Surrey, B.C., SFU engages actively with the community in its research and teaching, delivers almost 150 programs to more than 30,000 students, and has more than 120,000 alumni in 130 countries.


Story Source:

The above story is based on materials provided by Simon Fraser University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Kelly M. Ablard, Paul W. Schaefer, Gerhard Gries. An alternative reproductive tactic: A parasitoid wasp gathers and guards a harem by pheromone-tagging virgins. Behavioural Processes, 2012; DOI: 10.1016/j.beproc.2012.11.015

Cite This Page:

Simon Fraser University. "Females tagged in wasp mating game." ScienceDaily. ScienceDaily, 8 January 2013. <www.sciencedaily.com/releases/2013/01/130108112455.htm>.
Simon Fraser University. (2013, January 8). Females tagged in wasp mating game. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2013/01/130108112455.htm
Simon Fraser University. "Females tagged in wasp mating game." ScienceDaily. www.sciencedaily.com/releases/2013/01/130108112455.htm (accessed January 31, 2015).

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