“…In this study, the characteristics of hydrated eggs of the three Diaphus species (i.e. weak chorion, yolk segmentation, and presence of an oil droplet) were similar to those of three myctophids previously described: Benthosema fibulatum, B. pterotum, and L. hectoris (Robertson, 1977;Gjøsaeter and Tilseth, 1988;Hussain and Ali-Khan, 1988). In many teleosts, hardening of the egg chorion occurs just after fertilization, which has a potential role in prevention of polyspermy and resistance to damage from the environment (Yamamoto, 1961;Blaxter, 1969).…”