Society for Integrative and Comparative Biology

@sicb.bsky.social

The official bsky account of The Society for Integrative & Comparative Biology (sicb.org) If you’re a society member, feel free to tag us or email content to share SICBmedia@sicb.org & follow @sicbjournals.bsky.social

I put a call out for mural walls yesterday and I got a lot of VERY good walls for projects of a variety of scales. Unfortunately I have only sold enough shirts this summer to cover 2 of those walls. This means more people need to buy shirts. Thems the breaks. More shirts more art. SquidFacts.Net

a bunch of people in our shirts, including our biology is bigger than binaries shirt, adam whose poor head got cut off in his montage in our plant native plants shirt, a blonde dude in the shrimp shirt, and Jay in oue firefly squid shirt  in the dark forest

Awesome #SICB interview with @yuchenchen0531.bsky.social about our recent collaboration with @elizabethhobson.bsky.social to study sex variation in aggression in monk parakeets!

Society for Integrative and Comparative Biology@sicb.bsky.social · last wk.

Watch the #SICB student journalist chat that accompanies this youtu.be/iu1y_26-di8?... #SICB #Student #journalist piece, on Yuchen Chen by Meghan Forcellati sicb.org/sicb-news/th... & read ICB's paper by Chen, @jacanamama.bsky.social & Hobson doi.org/10.1093/icb/...



In gregarious species, aggressive interactions often mediate the establishment of social rank and dominance hierarchies. Following the assumption that females and males compete under different selection pressures, many studies examine aggression and dominance in each sex separately. However, social selection pressures such as competition for resources or social status may influence the sexes similarly, and more work is needed to directly examine the role of sex in aggression and dominance. To address this, we compared aggression levels, choice of aggression targets, and dominance hierarchies between sexes in captive, mixed-sex groups of highly social monk parakeets (Myiopsitta monachus). We examined interactions at the individual, dyadic, and group levels in 5 groups of 10 individuals each. We asked whether sex predicted aggressiveness, choice of aggression targets, and social rank. We found no evidence that one sex was more aggressive than the other. In most cases, sex did not impact the choice of target in an aggressive interaction. The sex of an individual did not significantly predict the rank they achieved in the group; females and males were equally likely to be high-ranked. Overall, we found that sex had limited impacts on aggression and rank in these mixed-sex groups. Our study provides new insights into social aggression and dominance in monk parakeets by examining both sexes and highlights the importance of studying sex similarities and differences within complex social environments.