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Effects of seawater acidification on early development of the intertidal sea urchin Paracentrotus lividus (Lamarck 1816) Moulin, L.; Catarino, A.I.; Claessens, T.; Dubois, P. (2011). Effects of seawater acidification on early development of the intertidal sea urchin Paracentrotus lividus (Lamarck 1816). Mar. Pollut. Bull. 62(1): 48-54. dx.doi.org/10.1016/j.marpolbul.2010.09.012 In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 220550 [ download pdf ]

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Trefwoorden

Acidification Biological development > Larval development Biological phenomena > Adaptations > Acclimatization Environments > Aquatic environment > Marine environment > Intertidal environment Tidal pools Water > Sea water Water bodies > Oceans Paracentrotus lividus (Lamarck, 1816) [WoRMS]; Paracentrotus lividus (Lamarck, 1816) [WoRMS] ANE, France, Brittany [Marine Regions] Marien/Kust

Author keywords

Ocean acidification; Sea urchin; Intertidal; Early development; LOEC; Acclimatization; adaptation

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Auteurs		Top
Moulin, L., meer Catarino, A.I., meer Claessens, T., meer Dubois, P., meer

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Abstract

The effect of pH ranging from 8.0 to 6.8 (total scale – pHT) on fertilization, cleavage and larval development until pluteus stage was assessed in an intertidal temperate sea urchin. Gametes were obtained from adults collected in two contrasting tide pools, one showing a significant nocturnal pH decrease (lowest pHT = 7.4) and another where pH was more stable (lowest pHT = 7.8). The highest pHT at which significant effects on fertilization and cleavage were recorded was 7.6. On the contrary, larval development was only affected below pHT 7.4, a value equal or lower than that reported for several subtidal species. This suggests that sea urchins inhabiting stressful intertidal environments produce offspring that may better resist future ocean acidification. Moreover, at pHT 7.4, the fertilization rate of gametes whose progenitors came from the tide pool with higher pH decrease was significantly higher, indicating a possible acclimatization or adaptation of gametes to pH stress.

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