E. K. Fischer

Timing-dependent effects of elevated maternal glucocorticoids on offspring brain gene expression in a wild small mammal

This study examines how timing of maternal glucocorticoid exposure affects offspring brain gene expression in wild red squirrels, finding timing-dependent effects on neural gene transcription.

Fortune may favor the flexible: Environment-dependent behavioral shifts in invasive coqui frogs

The paper examines behavioral shifts in invasive coqui frogs across their range and under laboratory conditions, finding convergent behavioral phenotypes suggesting environmental adaptation and flexibility.

Individual Behavioral Variability Across Time and Contexts in Dendrobates tinctorius Poison Frogs

This study examines consistent individual differences in behavior and context-dependent responses in Dendrobates tinctorius poison frogs, finding repeatability in activity and exploration but context-specificity in boldness.

Tap Dancing Frogs: Posterior Toe Tapping and Feeding Behavior in Dendrobates tinctorius

This study investigates posterior toe tapping in Dendrobates tinctorius, finding that tap rate is modulated by social context, prey accessibility, and substrate characteristics, suggesting a role in prey detection and capture.

Evidence for individual vocal recognition in a pair bonding poison frog? Insights from no-choice and two-choice paradigms

The paper investigates whether poison frog females recognize and prefer their mate's vocalizations, using playback experiments and behavioral responses.

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.

Co-option of ancestral signal elements in the evolution of a cooperative parental behavior

The paper characterizes egg feeding calls in Ranitomeya imitator and compares them to advertisement and courtship calls, finding shared and unique properties that suggest signal recombination in parental communication.

Non-parallel transcriptional divergence during parallel adaptation

This study examines gene expression evolution in Trinidadian guppies during parallel adaptation, finding both plasticity and divergence in transcriptional responses across populations.

Land use impacts poison frog chemical defenses through changes in leaf litter ant communities

This study links land use changes to poison frog chemical defenses by showing habitat fragmentation alters leaf litter ant communities, which in turn affects frog diet and alkaloid profiles.

The neural basis of tadpole transport in poison frogs

The paper identifies neural correlates of parental care in poison frogs across species and sexes, highlighting shared brain regions and neuropeptide roles.

Seasonal changes in diet and toxicity in the Climbing Mantella frog (Mantella laevigata)

This study examines how seasonal environmental changes affect the diet and toxin profiles of Climbing Mantella frogs, finding seasonal differences in diet composition and toxin abundance.

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.