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Laboratory and Field Culture of Larvae of The Slipper Limpet, Crepidula fornicata

Laboratory and Field Culture of Larvae of The Slipper Limpet, Crepidula fornicata

Published on: January 5, 2024

CO2 induced seawater acidification impacts sea urchin larval development I: elevated metabolic rates decrease scope

M Stumpp¹, J Wren, F Melzner

¹Biological Oceanography, Leibniz Institute of Marine Sciences (IFM-GEOMAR), Kiel, Germany.

Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology

|July 12, 2011

Summary

Ocean acidification from anthropogenic CO(2) emissions causes developmental delays in sea urchin larvae. Elevated carbon dioxide levels increase metabolic rates but reduce energy available for growth.

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Area of Science:

Marine Biology
Oceanography
Environmental Science

Background:

Anthropogenic carbon dioxide (CO(2)) emissions are driving ocean acidification.
Ocean acidification negatively impacts marine invertebrate growth and development.

Purpose of the Study:

To investigate the effects of elevated seawater partial pressure of carbon dioxide (pCO(2)) on the early development, metabolic, and feeding rates of sea urchin larvae (Strongylocentrotus purpuratus).

Main Methods:

Larvae were exposed to elevated pCO(2) (129 Pa, 1271 μatm).
Growth and development assessed via body and rod length measurements.
Metabolic and feeding rates were quantified.
Scope for growth was calculated.

Main Results:

Elevated pCO(2) caused an approximate 8% developmental delay in larvae, not size reduction.
Respiration rates increased by up to 100% under high pCO(2).
Feeding rates, corrected for body length, remained unchanged.
Larvae under high pCO(2) allocated significantly less energy to somatic growth (39-45%) compared to controls (78-80%).

Conclusions:

Ocean acidification induces developmental delays and metabolic stress in sea urchin larvae.
Reduced energy allocation for growth under elevated pCO(2) has significant implications for marine invertebrate populations.
Standardized age/developmental stage comparisons are crucial when assessing the impacts of environmental stressors.