Table 3.
Ion concentration in the hemolymph.
| [Na+] [mM] | [K+] [mM] | [Cl−] [mM] | [Mg2+] [mM] | [Ca2+] [mM] | Remark/method | References |
|---|---|---|---|---|---|---|
| THIRD INSTAR LARVAL | ||||||
| 52 ± 1 | 36 ± 1 | 30 ± 1 | – | – | Photometry and chemical methods | Croghan and Lockwood, 1960 |
| 56.5 | 40.2 | 42.2 | 41.6 | 15.9 | Physical and chemical methods | Begg and Cruickshank, 1962 |
| ~45 | ~23 | – | – | – | Ion-selective microelectrodes | Naikkhwah and O'Donnell, 2011 |
| ADULT | ||||||
| 70 – 110 | 26 | Ion-selective microelectrodes | Naikkhwah and O'Donnell, 2011 | |||
| 123.7 ± 9.2 | 28.4 ± 2.4 | Ion-selective microelectrodes | MacMillan and Hughson, 2014 | |||
Drosophila third instar larval and adult hemolymph concentrations of selected ions are listed. The method of concentration determination is indicated.