R. D. Tarvin

This study estimates genome sizes for 32 poison frog species and finds gradual evolution with correlations to body size and reproductive traits, but no link to chemical defense evolution.

The paper identifies deep genetic divergences and two new species within inconspicuously colored Epipedobates poison frogs, clarifying taxonomy and geographic distribution.

The paper identifies positive selection on opsin genes in diurnal Neotropical frogs and reports the loss of SWS2 opsin in poison frogs, suggesting implications for their visual adaptation and chemical ecology.

This study investigates whether Pacific Chorus Frogs (Pseudacris regilla) are resistant to tetrodotoxin (TTX) by analyzing sodium channel sequences and activity patterns relative to TTX-producing Taricha newts.

The paper shows that Drosophila strains with higher toxin metabolism ingest more nicotine, leading to better survival against parasitism, suggesting toxin accumulation can evolve as a defensive strategy.