“…The nearby presence of an infected egg and even water-borne cues emitted from infected eggs can induce early hatching in brown trout (Pompini et al, 2013), other salmonids (Wedekind, 2002), and other lower vertebrates (Warkentin et al, 2001). Induced early hatching could also be observed in response to other types of stress such as simulated danger of desiccation (Wedekind & Müller, 2005), a simulated or actual attack by a predator (Gomez et al, 2023;Warkentin, 2005), or exposure to chemical stressors (Lieke et al, 2021). The response of infected embryos can, however, differ in direction.…”