July 30, 2019

054 Venom Variation

Venom can be deadly, but not all venoms are created equal. They serve different purposes and have evolved for different reasons. In this episode we discuss a couple of new papers around the theme of venom, and finish off with a venomous new species for our Species of the Bi-week.

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Main Paper References:

Goetz, S. M., Piccolomini, S., Hoffman, M., Bogan, J., Holding, M. L., Mendonça, M. T., & Steen, D. A. (2019). Serum-based inhibition of pitviper venom by eastern indigo snakes (Drymarchon couperi). Biology Open, 5.

Healy, K., Carbone, C., & Jackson, A. L. (2019). Snake venom potency and yield are associated with prey-evolution, predator metabolism and habitat structure. Ecology Letters, 22(3), 527–537. https://doi.org/10.1111/ele.13216

Species of the Bi-Week:

Captain, A., Deepak, V., Pandit, R., Bhatt, B., & Athreya, R. (2019). A new species of pitviper (Serpentes: Viperidae: Trimeresurus Lacepède, 1804) from West Kameng District, Arunachal Pradesh, India. Russian Journal of Herpetology, 26, 13.

Other Mentioned Papers/Studies:

Barlow, A., Pook, C. E., Harrison, R. A., & Wüster, W. (2009). Coevolution of diet and prey-specific venom activity supports the role of selection in snake venom evolution. Proceedings of the Royal Society B: Biological Sciences, 276(1666), 2443-2449.

Malhotra, A., & Thorpe, R. S. (2004). A phylogeny of four mitochondrial gene regions suggests a revised taxonomy for Asian pitvipers (Trimeresurus and Ovophis). Molecular Phylogenetics and Evolution, 32(1), 83–100. https://doi.org/10.1016/j.ympev.2004.02.008

Music:

Intro/outro – Treehouse by Ed Nelson

Other Music – The Passion HiFi, www.thepassionhifi.com

July 16, 2019

053 In Defense of Eggs

A slightly hap-hazard episode looking at some brave lizards facing down an ever present snake menace. Lizards have to stop nest raiding some-how and a couple of recent papers shed some light on how. We also have a well armoured Species of the Bi-week. FULL REFERENCE LIST AVAILABLE AT: herphighlights.podbean.com

Main Paper References:

Pike, D. A., Clark, R. W., Manica, A., Tseng, H.-Y., Hsu, J.-Y., & Huang, W.-S. (2016). Surf and turf: Predation by egg-eating snakes has led to the evolution of parental care in a terrestrial lizard. Scientific Reports, 6(1), 22207. https://doi.org/10.1038/srep22207

Sherbrooke, W. C. (2017). Antipredator Nest Guarding by Female Horned Lizards (Phrynosoma): Iguanian Parental Care. Herpetologica, 73(4), 331–337. https://doi.org/10.1655/Herpetologica-D-17-00028.1

Species of the Bi-Week:

Avila-Pires, T. C., Nogueira, C., & Martins, M. (2019). A new ‘horned’’ Stenocercus from the highlands of southeastern Brazil, and redescription of Stenocercus tricristatus (Reptilia: Tropiduridae)’. Zoologia, 36, 1–16. https://doi.org/10.3897/zoologia.36.e22909

Other Mentioned Papers/Studies:

Huang, W.-S., Greene, H. W., Chang, T.-J., & Shine, R. (2011). Territorial behavior in Taiwanese kukrisnakes (Oligodon formosanus). Proceedings of the National Academy of Sciences, 108(18), 7455–7459. https://doi.org/10.1073/pnas.1101804108

Origgi, F. C., Schmidt, B. R., Lohmann, P., Otten, P., Meier, R. K., Pisano, S. R., ... & Gaschen, V. (2018). Bufonid herpesvirus 1 (BfHV1) associated dermatitis and mortality in free ranging common toads (Bufo bufo) in Switzerland. Scientific reports, 8(1), 14737. https://doi.org/10.1038/s41598-018-32841-0

Willson, J. D., & Winne, C. T. (2016). Evaluating the functional importance of secretive species: A case study of aquatic snake predators in isolated wetlands. Journal of Zoology, 298(4), 266–273. https://doi.org/10.1111/jzo.12311

Music:

Intro/outro – Treehouse by Ed Nelson

Other Music – The Passion HiFi, www.thepassionhifi.com

Salamanders are famous for being slippery and liking water, but we uncover some new and surprising elements in their ecology. Stay tuned for a Species of the Bi-Week that resembles a breakfast favourite.

FULL REFERENCE LIST AVAILABLE AT: herphighlights.podbean.com

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Main Paper References:

Mezebish, T. D., Blackman, A., & Novarro, A. J. (2018). Salamander climbing behavior varies among species and is correlated with community composition. Behavioral Ecology, 29(3), 686–692. https://doi.org/10.1093/beheco/ary022

Moldowan, P. D., Alex Smith, M., Baldwin, T., Bartley, T., Rollinson, N., & Wynen, H. (2019). Nature’s pitfall trap: Salamanders as rich prey for carnivorous plants in a nutrient‐poor northern bog ecosystem. The Scientific Naturalist, e02770. https://doi.org/10.1002/ecy.2770

Species of the Bi-Week:

Sugawara, H., Watabe, T., Yoshikawa, T., & Nagano, M. (2018). Morphological and Molecular Analyses of Hynobius dunni Reveal a New Species from Shikoku, Japan. Herpetologica, 74(2), 159–168. https://doi.org/10.1655/Herpetologica-D-17-00002.1

Other Mentioned Papers/Studies:

Adams, D. C., & Rohlf, F. J. (2000). Ecological character displacement in Plethodon: Biomechanical differences found from a geometric morphometric study. Proceedings of the National Academy of Sciences, 97(8), 4106–4111. https://doi.org/10.1073/pnas.97.8.4106

Other Links/Mentions:

Roberts, W. E. (1994). Explosive breeding aggregations and parachuting in a Neotropical frog, Agalychnis saltator (Hylidae). Journal of Herpetology, 193-199.

Stuart YE, Campbell TS, Hohenlohe PA, Reynolds RG, Revell LJ, Losos JB. 2014. Rapid evolution of a native species following invasion by a congener. Science. 346:463–466.

Music:

Intro/outro – Treehouse by Ed Nelson

Other Music – The Passion HiFi, www.thepassionhifi.com