Skate blood-oxygen affinity under different temperatures and pCO2 levels Dissolved oxygen is not evenly distributed throughout the water column nor across geographic regions, but is rather concentrated in near-surface areas where it can diffuse into the water or in areas where it is produced via photosynthesis (Keeling et al., 2010). When water masses are isolated…

Read more Blood-Oxygen Affinity

The impact of simulated capture stress on elasmobranch cardiac function using isolated myocardial strips High levels of plasma potassium (i.e., hyperkalemia) and acidosis following capture are associated with post-release mortality in fishes, although this relationship has yet to be tested or quantitatively evaluated in elasmobranch fishes. Here, isolated cardiac strip performance was measured under hyperkalemic…

Read more Cardiac Function

Red Blood Cell Swelling Prevalence in Elasmobranch Fishes Fishes exposed to stress such as extreme hypoxia and capture events exhibit elevated plasma pCO2, potassium, and lactate; decreased plasma pH; and a suite of other physiological responses including increased cardiac output (Pickering, 1981; Wood, 1980; Korsmeyer et al., 1997; Mandelman and Skomal, 2009; Marshall et al.,…

Read more Red Blood Cell Swelling