behavioral assay

Across six zebrafish lines over one year, artificial home-tank plants left sex ratio, fertility and microbial counts unchanged, while fish avoided plant areas.

Red drum lowered oxygen consumption behind mangrove- and oyster-mimicking bluff bodies at flows to 100 cm/s, yet telemetered fish were detected mostly in low-velocity nearshore habitat.

A 96-well square plate zebrafish larva thigmotaxis assay with visual and acoustic stimuli matched 24-well round plates and detected neuroactive chemicals more sensitively than locomotion.

Across 105 rhesus macaque matrilines at two primate centers, family grooming cohesion drops below a mean kinship threshold of 0.16, while lower kinship continuously increases severe within-family aggression.

In musical dyads, perturbing breathing disrupts both respiratory and auditory-motor synchronization whereas perturbing tapping disrupts only behavior, demonstrating a unidirectional causal influence from respiration to behavioral coordination.

In 14 rats doing probabilistic reversal learning, model-derived uncertainty (unsigned average prediction error) and recency-weighted reward history distinctly and sex-specifically shaped win-stay versus lose-shift choices.

Perinatal exposure of mice to a Pb, As, Cd and Cr(VI) mixture at EPA levels impaired recognition memory, raised anxiety-like behavior, and altered mPFC neuron function.

Mice infer stimulus-side priors from recent choices; prior signals are decodable pre-stimulus in 24.0% to 30.2% of 242 brain regions, including early visual and motor areas.

Japanese quails reared in groups of 15 versus five pecked a transparent cylinder less, but rearing group size did not change impulsive aggression in either context.

Heliconius butterflies retain odour associations over eight days no better than outgroup Heliconiini, contrasting with their superior visual long-term memory, consistent with a modality-specific memory enhancement.

Reward learning bias, sucrose preference, and ultrasonic vocalisation assays show that singly housed male C57BL/6 mice in conventional cages exhibit a more positive affective state than group-housed mice.

After controlling for confounders, 15 wild Sumatran orangutan mothers differed consistently in average expression of four of six maternal behaviours and in age-related plasticity for three.

LLM-driven evolutionary program synthesis (CogFunSearch) discovers interpretable Python cognitive models that predict bandit-task choices of humans, rats and fruit flies better than leading hand-designed models.