Metabolic costs of larval settlement and metamorphosis in the coral Seriatopora caliendrum under ambient and elevated pCO2

Edmunds, Peter J., Cumbo, Vivian R., and Fan, Tung-Yung (2013) Metabolic costs of larval settlement and metamorphosis in the coral Seriatopora caliendrum under ambient and elevated pCO2. Journal of Experimental Marine Biology and Ecology, 443. pp. 33-38.

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Abstract

We tested the effects of pCO2 on Seriatopora caliendrum recruits over the first 5.3 d of post-settlement existence. In March 2011, 11–20 larvae were settled in glass vials (3.2 mL) and incubated at 24.0 °C and ~ 250 µmol quanta m− 2 s− 1 while supplied with seawater (at 1.4 mL s− 1) equilibrated with 51.6 Pa pCO2 (ambient) or 86.4 Pa pCO2. At 51.6 Pa pCO2, mean respiration 7 h post-settlement was 0.056 ± 0.007 nmol O2 recruit− 1 min− 1, but rose quickly to 0.095 ± 0.007 nmol O2 recruit− 1 min− 1 at 3.3 d post-settlement, and thereafter declined to 0.075 ± 0.002 nmol O2 recruit− 1 min− 1 at 5.3 d post-settlement (all ± SE). Elevated pCO2 depressed respiration of recruits by 19% after 3.3 d and 12% overall (i.e., integrated over 5.3 d), and while it had no effect on corallite area, elevated pCO2 was associated with weaker adhesion to the glass settlement surface and lower protein biomass. The unique costs of settlement and metamorphosis for S. caliendrum over 5.3 d are estimated to be 257 mJ recruit− 1 at 51.6 Pa pCO2, which is less than the energy content of the larvae and recruits.

Item ID: 32152
Item Type: Article (Research - C1)
ISSN: 0022-0981
Keywords: metabolic cost; metamorphosis; recruits; respiration; Scleractinia
Funders: US National Science Foundation
Projects and Grants: US National Science Foundation (BIO-OCE 08-44785)
Date Deposited: 23 Apr 2014 05:56
FoR Codes: 06 BIOLOGICAL SCIENCES > 0606 Physiology > 060604 Comparative Physiology @ 50%
06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069902 Global Change Biology @ 50%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures @ 50%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 50%
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