DETERMINATION OF THE INSEMINATION TIME OF THE GLOSSINA-PALPALIS ROBINEAU-DESVOIDY, 1830 IN THE FOREST BELT OF DALOA, COTE-DIVOIRE

The observations on the insemination of the Glossina palpalis have bee n made in the forest belt of Daloa in the Cote d'Ivoire through the re st of the spermathecae of females caught in different biotopes. The te sting of 8342 Glossina show that the ratio of females with empty sperm athecae is low, with a rate of 0.88%. Most of the captured Glossina ar e tenerals or tsetse flies which have not yet been fed. We did not fin d a single virgin female among the young parous Glossina above the age of 9 days. However our of 3841 very old Glossina, 0.08% were found wi th empty spermathecae. Our results suggest that the Glossina's insemin ation took place earlier within the G. palpalis type, a few days befor e the adult (between 1 and 3 days). (C) 1997 Elsevier Science B.V. All rights reserved.