Reproduction ecology of the recently invasive snake Hemorrhois hippocrepis on the island of Ibiza

A recent study on the invasive horseshoe whip snake, Hemorrhois hippocrepis, on Ibiza reveals rapid phenotypic plasticity in reproductive traits, observed within just 14 years of invasion. The research compares native mainland and invasive island populations, finding that invasive females mature at smaller sizes, have extended reproductive periods, but lower reproduction frequency. While clutch size, hatchling body size, and condition remained consistent, the study suggests environmental differences and plasticity may contribute to the snake's invasiveness, threatening Ibiza's endemic lizard, Podarcis pityusensis. The findings highlight the adaptability of invasive species in Mediterranean islands.

Montes, E., Feriche, M., Ruiz-Sueiro, L., Alaminos, E., & Pleguezuelos, J. M. (2019). Reproduction ecology of the recently invasive snake Hemorrhois hippocrepis on the island of Ibiza. Current Zoology, 66(4), 363–371. https://doi.org/10.1093/cz/zoz059