Ecological and genetic differentiation in Persea boninensis (Lauraceae) endemic to the Bonin (Ogasawara) Islands

Research on Persea boninensis, an endemic tree species in the Ogasawara (Bonin) Islands, reveals clear genetic differentiation between populations inhabiting dry and mesic forests. Despite overlapping flowering periods—suggesting potential pre-zygotic isolation—the study found no evidence of post-fertilization reproductive barriers, as artificial crossings between groups successfully produced seeds. This implies that ecological divergence alone may not suffice to maintain long-term genetic separation without additional temporal or habitat-based reinforcement. The findings highlight the complex interplay between phenology and genetics in shaping species differentiation on these remote islands.

Tsuneki, S., Kato, H., & Murakami, N. (2012). Ecological and genetic differentiation in Persea boninensis (Lauraceae) endemic to the Bonin (Ogasawara) Islands. Plant Species Biology, 29(1), 16–24. Portico. https://doi.org/10.1111/j.1442-1984.2012.00383.x