Investigating intraspecific variability in the biological responses of sea urchins (Paracentrotus lividus) to seawater acidification.

ABSTRACT: Alterations in seawater chemistry posed by acidification may lead to immunological and antioxidant defence impairment in sea urchins, with differences among local populations. Here, we analyzed the effects of reduced pH on Paracentrotus lividus, with a multibiomarker approach, and the possible intraspecific variations in sea urchin responses. Two groups of animals with different ecological histories (i.e., the pattern of environmental characteristics and pressures experienced throughout the organism's lifetime) were maintained at ambient pH and pH reduced of 0.4 units for 8 months. Changes in gonadosomatic index (GSI), immunological, and oxidative stress biomarkers were assessed in coelomic fluid, gonads, and digestive tract. Animals maintained at reduced pH showed limited impact of seawat

SUBMITTER: Asnicar D 

PROVIDER: S-EPMC11374922 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature