Skip to main content
. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Biol Bull. 2009 Dec;217(3):313–326. doi: 10.1086/BBLv217n3p313

Figure 1.

Figure 1

Gly-SIFamide injection into YCs. Effect on mean dominance index (DI) before (pre) and after (post) injection of the YCs with 1 × 10−3 mol l−1 Gly-SIFamide (n = 5). Before the injection, BCs established themselves as the dominant animals and YCs as the subordinates (one-way ANOVA, Tukey's test, P ≤ 0.001). When the YCs were injected with Gly-SIFamide, they behaved very much as do BCs under control conditions. The behavior of BCs confronted with Gly-SIFamide-injected YCs was also modified, showing a significant decrease in the levels of aggression compared to control conditions. The asterisk (*) over the YC post-injection group represents a significant difference from the YCs in control conditions (before the injection). The cross (†) over the BC post-injection group represents a significant difference from the BCs in control conditions. BC: blue clawed prawns; YC: yellow clawed prawns; filled bar indicates the mean DI of the injected (YC) prawns; *P ≤ 0.001; **P ≤ 0.025; † P ≤ 0.050.