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About

Sophia Callander is a behavioral ecologist whose research has made significant contributions to our understanding of sexual selection and mate choice, particularly in crustacean model systems. Her work centers on the fiddler crab (*Uca mjoebergi*), using innovative robotic crab models to experimentally probe the mechanisms underlying female mate preference. Callander's most influential paper, "Female choice over short and long distances: neighbour effects" (2011, 34 citations), established that mate assessment is shaped by spatial context, a theme she continued exploring in her 2012 study (25 citations) demonstrating that a male's attractiveness is contingent on the quality of his immediate competitors rather than fixed absolute criteria. Her 2013 investigation into claw morphology (28 citations) addressed the dual functionality of elaborate male traits as both weapons and mating signals, contributing to broader debates about the evolution of sexual ornamentation. More recently, she has examined how the operational sex ratio influences the strength of sexual selection. Collectively, Callander's experimental approach and nearly 100 cumulative citations have helped clarify how social environment and male signaling interact to drive mate choice decisions in the wild.