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Table 3 Acid-base status in Crustacea.

From: Physiological responses of Daphnia pulex to acid stress

Group/Species pH [] (mM) PCO2 (kPa) arterial/
venous
βA (mM pH-1) T(°C) Medium Mode of
Life
Reference
Branchiopoda          
Daphnia pulex 8.33 21.0 0.56   1.75 20 FW A §
Daphnia magna 8.44 13.4 0.28   0.5 20 FW A $
Triops cancriformis 7.52 7.6 1.36   2.1 20 FW A $
Decapoda          
Astacus astacus 7.78 5.2 0.27 a 6.3 15 FW A [79]
Astacus leptodactylus 7.87 4.5 0.26 v 11.6 13 FW A [61]
Pacifastacus leniusculus 7.95 8.8# 0.37 a 11.6 15 FW A [69]
Austropotamobius pallipes 7.90 6.9# 0.40 a 13.5 15 FW A [64]
Orconectes rusticus 7.87 5.8# 0.45 a   15 FW A [70]
Orconectes propinquus 7.75 7.0 0.37 a 8 10 FW A [78]
Procambarus clarki 7.93 9.9 0.49 a   15 FW A [77]
Procambarus clarki 8.17 17.8 0.44 a   15 FW A [77]
Procambarus clarki 7.75 7.0 0.40 a    FW A [25]
Homarus vulgaris 7.80 5.6 0.26 a 8 15 SW A [57]
Homarus gammarus 7.78 9.3 0.44 a 15 15 SW A [65]
Palaemon elegans 7.89 5.4# 0.17 a 16 15 SW A [59]
Palaemon adspersus 7.85 4–7 0.25 a 4–9 15 SW A [68]
Penaeus japonicus 7.58 6.0 0.44 a   18 SW A [52]
Carcinus maenas 7.82 3.9 0.15 v 13.3 15 SW X [66]
Callinectes sapidus 7.96 8.8 0.40 v 5 22 FW A [50]
Scylla serrata 7.68 7.5# 0.48 a 13.2 25 SW A [67]
Necora puber 7.90 6.6 0.19 v   15 SW A [62]
Cancer magister 7.73 4.5 0.25 a   17 SW A [56]
Cancer productus 7.89 9.0 0.30 a   10 SW A [53]
Gecarcinus lateralis 7.37 5.9 0.86 a   25 SW T [63]
Cardisoma carnifex 7.64 10.3# 0.93 a   28 SW T [51]
Cyclograpsus lavauxi 7.92 10.9 0.31 a   10 SW X [55]
Leptograpsus variegatus 7.90 5.4# 0.24 a   20 SW X [58]
Holthusiana transversa 7.33 9.5 0.80 a   25 FW X [54]
Amphipoda          
Gammarus pulex 8.00 12.4 0.40 a 2.6 12 FW A [60]
Gammarus fossarum 8.00 10.4 0.33 a 3.0 12 FW A [60]
  1. Hemolymph acid-base status of various crustaceans in freshwater (FW) and seawater (SW) under aerated conditions at temperature T. Postbranchial (a = 'arterial') hemolymph was drawn from the pericardial sinus, whereas prebranchial (v = 'venous') samples were taken from the infrabranchial sinus at the base of the walking leg. For each species, the typical mode of life (A = aquatic, T = terrestrial, X = amphibious) is indicated. #total CO2, §this study, $unpublished data.