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Table 1 Overview of the intracellular pH in unfertilized (UnF) and fertilized (F) eggs of different sea urchin species

From: CO2-induced fertilization impairment in Strongylocentrotus droebachiensis collected in the Arctic

Species pHi (UnF) pHi (F) Method References
Lytechinus pictus 6.84 7.3 BCECF–dextran Shen and Buck (1993)
7.22 7.58 BCECF–dextran Rees et al. (1995)
6.90 7.17 DMO method Dubé et al. (1985)
Paracentrotus lividus 7.38 7.64 DMO method Payan et al. (1983)
Strongylocentrotus purpuratus 7.08 7.47 DMO method Johnson and Epel (1981)
7–7.09 7.54–7.50 DMO method Dubé et al. (1985)
Schaphechinus mirabilis 6.8 7.34 Microfluorometry using pyranine Hamaguchi et al. (1997)
Hemicentrotus pulcherrimus 6.81 7.32
Psammechinus miliaris 6.5–6.6 Indirect estimation from acid production at fertilization Rees et al. (1995)