Does physiological tolerance to acute hypoxia and salinity change explain ecological niche in two intertidal crab species?

Lay summary In response to acute salinity change or hypoxia, Hemigrapsus crenulatus exhibited better maintenance of osmoregulatory and cardiovascular function than Hemigrapsus sexdentatus. The greater physiological resilience of H. crenulatus is consistent with its habitation of an ecological niche that promotes greater exposure to environmental stressors than that of H. sexdentatus.

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