Host [Host Name] interviews Dr. Zixia Song and Dr. Brian Falcão about the energy costs of intelligence in reptiles and amphibians and the evolution of snake cannibalism.
6 May 2026TRANSCRIPT
246 Salamanders vs Volcanoes
This week we delve into the evolutionary history of a fascinating little salamander from North America: the cascade torrent salamander. Volcanoes and flooding have shaped this species' history over the last 15 million years, but they remain steadfast. Then we chat about some newly described frogs from Ecuador.
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Main Paper References:
Cousins CD, Olson DH, Millward LS, Adams MJ, Pearl CA, Rowe JC, Garcia TS. 2026. Genomics Reveals Extensive Population Structure and Undescribed Phylogenetic Relationships in the Cascade Torrent Salamander ( Rhyacotriton cascadae ). Journal of Biogeography 53:e70167. DOI: 10.1111/jbi.70167.
Falcão BB, São Pedro VA, Entiauspe‐Neto OM. 2026. Occurrence and evolution of cannibal behaviour in extant snakes. Biological Reviews 101:644–664. DOI: 10.1111/brv.70097.
Song Z, Griesser M, Schuppli C, Van Schaik CP. 2023. Does the expensive brain hypothesis apply to amphibians and reptiles? BMC Ecology and Evolution 23:77. DOI: 10.1186/s12862-023-02188-w.
Species of the Bi-Week:
Székely P, Hualpa-Vega S, Hualpa-Vega D, Székely D. 2026. Three new Pristimantis species in the subgenus Huicundomantis (Amphibia: Anura: Strabomantidae) from Reserva Biológica Cerro Plateado, southern Ecuador. PeerJ 14:e20930. DOI: 10.7717/peerj.20930.
Editing and Music:
Intro/outro – Treehouse by Ed Nelson
Species Bi-week theme – Michael Timothy
Other Music – The Passion HiFi, https://www.thepassionhifi.com
14 Apr 2026TRANSCRIPT
245 A Vegetation Investigation
This week we're diving into two reptile papers: the first is about desert lizards being secret nutritional strategists, timing what they eat across the year to nail mating season and prep for hibernation. Then we stumble into the chaotic world of rattlesnake seed dispersal, where a snake eats a rodent that ate a seed, and thanks to the snake, a tree grows.
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Full reference list available here: http://www.herphighlights.podbean.com
Main Paper References:
Acevedo M, Salywon AM, Blackwell SA, Hodgson WC, Hughes ZS, Davis MA, Schuett GW. 2026. The potential for seed rescue and secondary dispersal in rattlesnakes. Royal Society Open Science 13:251226. DOI: 10.1098/rsos.251226.
Joshi M, Tatu A, Hawlena D, Raubenheimer D, Thaker M. 2026. Desert lizards modulate nutritional responses to match seasonal biological needs. Royal Society Open Science 13:251690. DOI: 10.1098/rsos.251690.
Editing and Music:
Intro/outro – Treehouse by Ed Nelson
Species Bi-week theme – Michael Timothy
Other Music – The Passion HiFi, https://www.thepassionhifi.com
Inside a recent episode
247 Big Brains Ain't Free
Published 12 May 2026 · Transcript excerpt
[…] So they wanted to find that out in this paper. Can you go to a different energy balance situation with your reptiles amphibians, right? It's not just eat food, produce your own heat. You can get your heat from the environment and sort of other aspects that completely change the dynamic. Yes, exactly. And added to that is the biochemical processes in our body. Are more efficient and faster at higher body temperatures. So if you're active at warmer temperatures, you can kind of be a bit more efficient and allocate more energy to maintaining larger brains. That was their theory. So they thought they would see, because it's more efficient to run a big brain at warmer temperatures. […]
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