Assessing the P_crit in relation to temperature and the expression of hypoxia associated genes in the mayfly, Neocloeon triangulifer.

ABSTRACT: Hypoxia is a growing concern in aquatic ecosystems. Historically, scientists have used the P_crit (the dissolved oxygen level below which an animal can no longer oxyregulate) to infer hypoxia tolerance across species. Here, we tested the hypothesis that the P_crit is positively correlated with temperature in the mayfly, Neocloeon triangulifer. Cross-temperature comparisons showed a modest (r = 0.47), but significant (p < 0.0001) association between temperature and P_crit despite relatively large interindividual variability (Coefficient of Variance (CV) = 39.9% at 18 °C). We used the expression of hypoxia-responsive genes EGL-9 (an oxygen sensing gene and modulator of HIF-1a activity) and LDH (a hypoxia indicator) to test whether oxygen partial pressure near th

SUBMITTER: Cochran JK 

PROVIDER: S-EPMC12180142 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature