Lirceus fontinalis

Lirceus fontinalis were unable to distinguish between two types of premolt females, and they not only attempted to form precopulatory pairs with reproductive but also with nonreproductive premolt females (Sparkes et al. 2000). In the symbiotic marine isopod Jaera hopeana males guard precocious juveniles (called manca ), but they cannot distinguish between male and female mancas consequently many males also guard male mancas, a costly mistake, which males only realize after several days at the first juvenile molt (Franke 1993). 

In response to larval predators we tend to see a delay in hatching time. Sih and Moore (1993) exposed streamside salamander embryos Ambystoma barbouri) to chemical cues from flatworms Phagocotus gracilis) or non-predatory isopods (Lirceus fontinalis). Embryos tended delay hatching in response to flatworm cues, but not to isopod cues. Moreover, hatchlings tended to be larger and more developed than control hatchlings. 

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