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Genes control fruit flies' social groupings

Date:
April 30, 2011
Source:
University of Chicago Press Journals
Summary:
A new study reveals how a fruit fly's genes can influence the company it keeps. Using male flies that had been bred for varying levels of aggressiveness, researchers observed how the males formed groups when placed into an enclosure with females.

A new study reveals how a fruit fly's genes can influence the company it keeps. Using male flies that had been bred for varying levels of aggressiveness, researchers Julia Saltz and Brad Foley observed how the males formed groups when placed into an enclosure with females.

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The research showed that the non-aggressive flies clumped together, forming a few large groups. The aggressive flies, meanwhile, spread out into smaller groups. This sorting according to behavioral preference is known as social niche construction (SNC), and Saltz says this is the first time it has been demonstrated to have a genetic basis. In sorting themselves this way, both aggressive and non-aggressive flies were able to find mating success.

Some flies were more likely to mate after winning an aggressive conflict. Those flies benefitted from being aggressive. Other flies however were more likely to mate after losing a squabble. Those flies benefitted from forgoing aggression. "Thus, successful males were those who 'used' SNC to generate the social environment in which they are most adept at mating," explains Saltz, a Ph.D. student and lead author on the paper. "Non-aggressive genotypes aren't just 'broken' males. They're pursuing an alternate social strategy."


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. Julia B. Saltz, Brad R. Foley. Natural Genetic Variation in Social Niche Construction: Social Effects of Aggression Drive Disruptive Sexual Selection inDrosophila melanogaster. The American Naturalist, 2011; 177 (5): 645 DOI: 10.1086/659631

Cite This Page:

University of Chicago Press Journals. "Genes control fruit flies' social groupings." ScienceDaily. ScienceDaily, 30 April 2011. <www.sciencedaily.com/releases/2011/04/110426155329.htm>.
University of Chicago Press Journals. (2011, April 30). Genes control fruit flies' social groupings. ScienceDaily. Retrieved April 17, 2015 from www.sciencedaily.com/releases/2011/04/110426155329.htm
University of Chicago Press Journals. "Genes control fruit flies' social groupings." ScienceDaily. www.sciencedaily.com/releases/2011/04/110426155329.htm (accessed April 17, 2015).

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