We hypothesized that higher levels of serotonin will have an effect on the crayfish aggression. Our data does not support our hypothesis as there is no significant difference in the aggression scores of the crayfish before the drug treatment (naïve fight) and after (drugged fight). While analyzing the data, we found the presence of winner and loser effect. Other factor such as sex may have influenced our results. However, a t- test revealed that there is no significant impact of sex on the aggression of the crayfish.
Previously it has been determined that serotonin increases the winning probability of the crayfish which is likely due to the increase in aggression (Huber, Smith, Delago, Isaksson, Kravitz 1997; Momohara, Kanai, Nagayama 2013).
Previously it has been determined that serotonin increases the winning probability of the crayfish which is likely due to the increase in aggression (Huber, Smith, Delago, Isaksson, Kravitz 1997; Momohara, Kanai, Nagayama 2013).