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First published online August 22, 2008
Journal of Experimental Biology 211, 2792-2798 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.019836
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The physiology of the midgut of Lutzomyia longipalpis (Lutz and Neiva 1912): pH in different physiological conditions and mechanisms involved in its control

Vânia C. Santos, Ricardo N. Araujo, Luciane A. D. Machado, Marcos H. Pereira and Nelder F. Gontijo*

Department of Parasitology, Federal University of Minas Gerais–UFMG, Avenue Antônio Carlos 6627, 31270-901, Belo Horizonte, MG, Brazil


Figure 1
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  		Fig. 1. pH in the abdominal midgut during blood digestion in uninfected females of L. longipalpis. Each point is from a separate experiment in which pH was measured using H+-sensitive microeletrodes.

 

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  		Fig. 2. Anatomy of L. longipalpis gut and pH in different parts of the midgut during the first 10 h (a) and 24 h (b) after blood ingestion. TM, thoracic midgut; AM, abdominal midgut; D, diverticulum filled with sugar solution; H, hindgut.

 

Figure 3
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  		Fig. 3. Carbonic anhydrase expression in the midgut of unfed L. longipalpis females. Lanes: MW, relative molecular mass marker; 1, transcript with homology to A. gambiae carbonic anhydrase (427 bp); 2, transcript with homology to A. aegypti cytoplasmic carbonic anhydrase (455 bp); 3, 18S subunit of rRNA (468 bp).

 

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© The Company of Biologists Ltd 2008