2026-10-14T13:56:33Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34023312 2026-09-29T11:03:20Z category_722 portal_316 item_type_3 month_year_09_2026

Data Sheet 1_Behavior in asymmetric dominance pairings predicts physiology, neural response, and neurogenesis in a social cichlid fish.pdf Elaine A. Aquino (25136709) Eliyah R. Stern (25136712) Alexis M. Romero (25136715) Jeremy A. Spool (4342699) Temidayo D. Bambe (25136718) Tessa K. Solomon-Lane (3244800) Kelly J. Wallace (14289083) Animal Behaviour Astatotilapia burtoni cortisol development doublecortin neurogenesis pS6 social dominance Introduction<p>In a social dominance hierarchy, dominant and subordinate individuals can exhibit dramatic differences in behavioral, physiological, and neural phenotypes. Juveniles often also form social dominance hierarchies, but it is less explored how these hierarchies reflect, or are distinct from, those exhibited by adults.</p>Methods<p>In the present study, we housed juvenile social cichlid Astatotilapia burtoni for one week in an asymmetric size pairing. We quantified behavior (approaches and displacements), stress (waterborne cortisol), neural activity (pS6), and neurogenesis (doublecortin) when the pair was reunited after a brief separation.</p>Results<p>Larger and smaller individuals differed dramatically in dominance behavior when reunited. Receiving these dominance behaviors did cause an acute stress response, but the asymmetric pairing itself did not induce chronic stress. We then assessed the impacts of this dominance pairing on the brain, and found that individuals who displayed more dominance behavior had lower neural activity when assessed across three forebrain regions. Lastly, a single week of pairing was not sufficient to induce changes in neurogenesis, but individuals who displayed more dominance behavior showed lower levels of neurogenesis.</p>Discussion<p>Like adults, juvenile Astatotilapia burtoni form dominance relationships after only one week of cohabitation. As the first to explore neurogenesis in juveniles of this species, we identified sites of particularly active neurogenesis and one region (the extended amygdala) as a potential novel site of juvenile-specific neurogenesis.</p> 2026-09-29T11:03:20Z Dataset Dataset 10.3389/fetho.2026.1888727.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Behavior_in_asymmetric_dominance_pairings_predicts_physiology_neural_response_and_neurogenesis_in_a_social_cichlid_fish_pdf/34023312 CC BY 4.0