Transgenerational acclimation to changes in ocean acidification in marine invertebrates

Area of Science:

• Marine Biology
• Oceanography
• Climate Change Science

Background:

• Increasing oceanic acidity (ocean acidification, OA) disrupts marine ecosystems and ocean buffering capacity.
• OA leads to decreased carbonate ion availability, hindering calcium carbonate saturation and shell formation in calcifying invertebrates.
• Malfunctioning calcification due to OA can cause cascading biological effects throughout marine ecosystems.

Purpose of the Study:

• To investigate the direct and indirect consequences of OA on marine invertebrates.
• To explore how long-term, multi-generational exposure to OA stress can lead to adaptive mechanisms.
• To elucidate the roles of acclimation, carryover effects, and evolutionary adaptation in marine invertebrates' response to OA.

Main Methods:

• Conducting transgenerational studies to assess responses across multiple generations.
• Examining physiological and ecosystem-related traits of marine invertebrates under OA stress.
• Investigating underlying mechanisms of transgenerational responses, including antioxidant responses, metabolic changes, and epigenetic reprogramming.

Main Results:

• Long-term exposure to OA stress may induce adaptive mechanisms in marine invertebrates.
• Transgenerational studies can reveal acclimation, carryover effects, and evolutionary adaptation to OA.
• Understanding transgenerational responses is crucial for predicting marine invertebrate survival under climate change.

Conclusions:

• Marine invertebrates may evolve adaptations to ocean acidification over multiple generations.
• Transgenerational studies are essential for understanding the full scope of OA impacts and adaptive potential.
• Mechanisms like epigenetic reprogramming play a key role in marine invertebrate adaptation to rapid climate change.