Why signal if you are not attractive? Courtship synchrony in a fiddler crab

Lauren Harrison, Gabriela Melo, Daniela Perez & Patricia Backwell
Synchronised male courtship signals are puzzling because males generally compete with each other for females. Male Austruca mjoebergi fiddler crabs wave in synchrony to attract females, but, all else being equal, females have a strong preference for ‘leader’ males that can produce waves before other males (‘followers’). So why do followers participate in synchrony? Here, we experimentally investigate three explanations for why followers might wave in synchrony: 1) followers obtain a small proportion of matings,...
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1 download reported since publication in 2021.

These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?