Coles, J.A. and Rick, R. (1985) An electron microprobe analysis of photoreceptors and outer pigment cells in the retina of the honeybee drone. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 156(2), pp. 213-222. (doi: 10.1007/BF00610864)
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Publisher's URL: http://dx.doi.org/10.1007/BF00610864
Abstract
Intracellular concentrations of elements were measured in the retina of the honeybee drone,Apis mellifera ♂ by electron microprobe X-ray analysis of frozen dried sections (Table 2). Before shock-freezing, slices of retina were superfused with Ringer solution, as in other work in which intracellular activities of Na+, K+ and Cl− were measured with ion-selective microelectrodes. The results give no evidence for any binding or sequestering of these elements in the cells, with the possible exception of K in photoreceptors (Table 3). In the special case of Na in outer pigment cells,a Na and [Na] were measured in the same piece of tissue: Na was present at a high concentration (55 mmol/l) but, again, we calculate that it was all freely dissolved in the cell water.<p></p> It was estimated that the subrhabdomeric cisternae of the photoreceptors contained 2–3 mmol/l Ca; otherwise, their electrolyte composition was similar to that of the cytoplasm. [Na], [K] and [Cl] in the rhabdom were what would be expected if the spaces between the microvilli were filled with Ringer solution
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Coles, Dr Jonathan |
Authors: | Coles, J.A., and Rick, R. |
College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity |
Journal Name: | Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology |
Publisher: | Springer |
ISSN: | 0340-7594 |
ISSN (Online): | 1432-1351 |
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