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Biology
Study findings on biology are outlined in reports from R.F. Oliveira and colleagues
July 14th, 2009
"Animal conflicts are influenced by social experience such that a previous winning experience increases the probability of winning the next agonistic interaction, whereas a previous losing experience has the opposite effect. Since androgens respond to social interactions, increasing in winners and decreasing in losers, we hypothesized that socially induced transient changes in androgen levels could be a causal mediator of winner/loser effects," scientists in Lisbon, Portugal report. "To test this hypothesis, we staged fights between dyads of size-matched males of the Mozambique tilapia (Oreochromis mossambicus). After the first contest, winners were treated with the...
Source: Science Letter (2009-07-14)
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