S. E. Westrick

Why not both? Measuring cortisol and corticosterone in poison frogs

The paper measures both cortisol and corticosterone in poison frogs, finding corticosterone is more abundant in D. tinctorius but similar in other species, challenging the assumption that corticosterone is always dominant in amphibians.

Maternal glucocorticoids do not influence HPA axis activity or behavior of juvenile wild North American red squirrels

This study tests if maternal glucocorticoids affect offspring behavior and HPA axis activity in red squirrels, finding no significant effects on aggression or adrenal reactivity.

Maternal glucocorticoids promote offspring growth without inducing oxidative stress or shortening telomeres in wild red squirrels

This study shows that maternal glucocorticoids increase offspring growth rates without causing oxidative stress or telomere shortening in red squirrels.

Attentive red squirrel mothers have faster-growing pups and higher lifetime reproductive success

The paper examines how maternal attentiveness in red squirrels affects pup growth and lifetime reproductive success, finding that attentive mothers have faster-growing pups and higher reproductive success.

Stress activity is not predictive of coping style in North American red squirrels

The paper tests if physiological and behavioral stress responses are correlated in wild red squirrels and finds they are independent.

Experimental increases in glucocorticoids alter function of the HPA axis in wild red squirrels without negatively impacting survival and reproduction

This study shows that experimental increases in cortisol in wild red squirrels alter HPA axis function but do not affect survival or reproduction.

Differences In Neural Activity, But Not Behavior, Across Social Contexts In Guppies, Poecilia reticulata

The paper examines neural activity differences across social contexts in guppies, finding context-specific activity in the preoptic area and motivation-related activity in other brain regions.