Ryo Yamaguchi

Evolutionary branching of male emergence timing: Trade-offs and variance asymmetry as drivers of dimorphism.

This study uses a mathematical model to show that trade-offs and variance asymmetry in emergence timing can drive evolutionary branching, leading to dimorphic male emergence strategies.

Is hybridization evil? --Competition generates alternative stable states of coexistence of hybridizing species

The paper develops a population dynamics model showing hybridization can create multiple coexistence regimes through competitive interactions and genetic processes.

Male Dimorphism and Emergence Strategies: A Mathematical Model of Protandry in Fabriciana nerippe Felder, 1862

This paper confirms male body-size dimorphism in Fabriciana nerippe and develops a mathematical model showing how emergence timing switches based on death rate and reproductive advantage.

Invasive mammals disrupt native dung beetle community coexistence

This study shows invasive mammals threaten native dung beetle communities by increasing extinction risks for specialists and intensifying competition among generalists.