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Keywords:

  • Glossina palpalis;
  • ATP analogues;
  • purinoceptors;
  • phago-stimulation.

ABSTRACT. The potencies of seventeen analogues of ATP as gorging inducers for Glossina palpalis palpalis were evaluated. The ranking for effective dose that induced half the flies to gorge (ED50) was: A tetra P geqslant R: gt-or-equal, slanted 5 ATP=2'd ATP geqslant R: gt-or-equal, slanted ADP=2'd ADP > AMP-PNP > 3'd ATP geqslant R: gt-or-equal, slanted 2'3′dd ATP > AMP-PCP > adenosine 5′ triphosphate 2′,3'dialdehyde geqslant R: gt-or-equal, slanted AMP-CPP » AMP. Females detect ATP and its analogues better than males. The ED50 of ATP was 5 × 10-7 M for teneral females and 1.5 × 10-6 M for males. According to the potency order of the ATP analogues, the G.p.palpalis gustatory receptors recognizing ATP can be classified as P2y purinoceptors.