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The function of anal papillae in salt adaptation of Drosophila melanogaster larvae
Author(s) -
Te Velde J. H.,
Molthoff C. F. M.,
Scharloo W.
Publication year - 1988
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1046/j.1420-9101.1988.1020139.x
Subject(s) - biology , drosophila melanogaster , larva , osmoregulation , adaptation (eye) , zoology , salt (chemistry) , anatomy , botany , ecology , salinity , biochemistry , chemistry , neuroscience , gene
Abstract The anal papillae of Drosophila melanogaster larvae showed strong developmental plasticity in media with different osmotic pressure. The size of the papillae decreased with increasing salt content of the medium, which supports the hypothesis of its absorptive function. We showed that CI‐transport at the site of the anal papillae decreased with increasing salt concentration, which also supports the hypothesis, that the function of anal papillae in osmoregulation is absorption at low salt content and not excretion at high salt content. The inactive area between the anal papillae increased with increased salt concentration, and thus contributed to the decreasing size of the anal papillae. Remnants of this area in pupae were mistakenly measured as anal papillae in a study on salt adaptation by Waddington (1959).