﻿INVESTIGATIONS 
  INTO 
  THE 
  BIONOMICS 
  OF 
  GLOSSINA 
  PALPALIS. 
  

  

  391 
  

  

  In 
  numerous 
  cases 
  there 
  is 
  no 
  doubt 
  into 
  which 
  category 
  an 
  animal 
  falls, 
  and 
  such 
  

   are 
  designated 
  by 
  an 
  exclamation 
  point 
  (!) 
  in 
  the 
  table. 
  In 
  other 
  cases 
  there 
  is 
  con- 
  

   siderable 
  doubt. 
  These 
  are 
  indicated 
  by 
  an 
  interrogation 
  point 
  (?). 
  In 
  one 
  or 
  two, 
  

   notably 
  that 
  of 
  the 
  domestic 
  ox 
  (see 
  Sect. 
  VI 
  (c), 
  Experiment 
  3), 
  some 
  individual 
  

   animals 
  appear 
  to 
  be 
  attractive 
  and 
  others 
  repulsive. 
  

  

  There 
  are 
  two 
  tests 
  for 
  distinguishing 
  between 
  attractive 
  and 
  repulsive 
  hosts 
  : 
  — 
  

  

  (1) 
  An 
  attractive 
  host 
  is 
  apt 
  to 
  collect 
  a 
  "following 
  swarm 
  ' 
  : 
  of 
  fly. 
  This 
  

  

  curious 
  phenomenon 
  is 
  associated 
  with 
  the 
  assembling 
  of 
  the 
  sexes 
  and 
  is 
  

   described 
  in 
  Sect. 
  IV. 
  

  

  (2) 
  The 
  range 
  of 
  fly 
  — 
  especially 
  its 
  range 
  inland 
  from 
  the 
  shore 
  — 
  is 
  likely 
  to 
  

  

  be 
  notably 
  extended 
  through 
  the 
  presence 
  of 
  favoured 
  hosts. 
  This 
  

   phenomenon 
  is 
  discussed 
  in 
  Sect. 
  V. 
  

  

  Table 
  XXI. 
  

  

  Summary 
  of 
  Observations 
  on 
  Hosts 
  and 
  Host-Preference 
  of 
  Glossina 
  palpalis 
  

  

  on 
  Victoria 
  Nyanza 
  in 
  Uganda. 
  

  

  Animals 
  

  

  observed 
  in 
  fly 
  

  

  belts, 
  

  

  Methods 
  of 
  Study. 
  

  

  Experi- 
  

   ment. 
  

  

  Approach 
  

  

  and 
  

   observa- 
  

   tion. 
  

  

  Shooting. 
  

  

  Conclusions. 
  

  

  Is 
  animal 
  

   fed 
  upon 
  ? 
  

  

  Is 
  animal 
  

  

  a 
  favoured 
  

  

  host? 
  

  

  Is 
  range 
  of 
  

   fly 
  affected 
  

   by 
  animal 
  f 
  

  

  Crocodl 
  

  

  .e 
  .. 
  Yes 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes 
  ! 
  

  

  Yes! 
  

  

  Yes. 
  

  

  Varanus 
  

  

  5 
  . 
  . 
  Yes 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes 
  ! 
  

  

  Yes 
  ! 
  

  

  Yes. 
  

  

  Tortoise 
  

  

  > 
  ..No 
  

  

  Yes 
  

  

  No 
  

  

  Yes 
  

  

  Yes 
  

  

  No. 
  

  

  Serpent 
  

  

  3 
  . 
  . 
  No 
  

  

  Yes 
  

  

  No 
  

  

  No? 
  

  

  No 
  

  

  No. 
  

  

  Lizards 
  

  

  . 
  . 
  No 
  

  

  Yes 
  

  

  No 
  

  

  No? 
  

  

  No! 
  

  

  No. 
  

  

  Situ 
  tun 
  

  

  ga 
  . 
  . 
  No 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes! 
  

  

  Yes 
  

  

  Yes. 
  

  

  Hippo 
  . 
  

  

  . 
  . 
  No 
  

  

  No 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes? 
  

  

  Bush-bi 
  

  

  lck 
  . 
  . 
  No 
  

  

  No 
  

  

  Yes 
  

  

  No?? 
  .. 
  

  

  No? 
  

  

  Yes?? 
  

  

  Bush-pi 
  

  

  g 
  . 
  . 
  No 
  

  

  No 
  

  

  Yes 
  

  

  No?? 
  .. 
  

  

  No? 
  

  

  Yes?? 
  

  

  Water-1 
  

  

  >uck 
  . 
  . 
  No 
  

  

  No 
  

  

  Yes 
  

  

  No?? 
  .. 
  

  

  No? 
  

  

  No? 
  

  

  Buffalo 
  

  

  ..No 
  

  

  No 
  

  

  No 
  

  

  

  

  O 
  

  

  No? 
  

  

  Duiker. 
  

  

  . 
  . 
  No 
  

  

  No 
  

  

  No 
  

  

  

  

  

  

  No. 
  

  

  Zebra 
  . 
  

  

  ..No 
  

  

  No 
  

  

  No 
  

  

  

  

  

  

  No. 
  

  

  Wart-h< 
  

  

  3g 
  . 
  . 
  No 
  

  

  No 
  

  

  No 
  

  

  

  

  

  

  No. 
  

  

  Keed-bi 
  

  

  lck 
  . 
  . 
  No 
  

  

  No 
  

  

  No 
  

  

  

  

  

  

  No. 
  

  

  Monkey 
  

  

  s 
  . 
  . 
  No 
  

  

  Yes 
  

  

  Yes 
  

  

  No? 
  

  

  No 
  ! 
  

  

  No. 
  

  

  Otter 
  . 
  

  

  . 
  . 
  No 
  

  

  Yes 
  

  

  Yes 
  

  

  No? 
  

  

  No! 
  

  

  Nd. 
  

  

  Mongoc 
  

  

  se 
  . 
  . 
  No 
  

  

  Yes 
  

  

  No 
  

  

  No? 
  

  

  No! 
  

  

  No, 
  

  

  Hyaena 
  

  

  k 
  . 
  . 
  No 
  

  

  No 
  

  

  No 
  

  

  ! 
  o 
  

  

  

  

  No. 
  

  

  Leopar< 
  

  

  1 
  ..No 
  

  

  No 
  

  

  No 
  

  

  

  

  

  

  No. 
  

  

  Birds 
  

  

  ..: 
  No 
  

  

  Yes 
  

  

  No 
  

  

  No? 
  

  

  No! 
  

  

  No! 
  

  

  Man 
  

  

  . 
  . 
  Yes 
  

  

  Yes 
  

  

  No 
  

  

  Yes 
  ! 
  

  

  No! 
  

  

  Yes.* 
  

  

  Ox 
  

  

  . 
  . 
  Yes 
  

  

  Yes 
  

  

  No 
  

  

  Yes 
  

  

  Yes 
  ? 
  

  

  No? 
  

  

  Pig 
  

  

  ..Yes 
  

  

  No 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes 
  

  

  Yes. 
  

  

  Goat 
  

  

  ..Yes 
  

  

  Yes 
  

  

  No 
  

  

  Yes 
  

  

  No! 
  

  

  No. 
  

  

  Sheep 
  

  

  . 
  . 
  Yes 
  

  

  No 
  

  

  No 
  

  

  Yes 
  

  

  No! 
  

  

  No. 
  

  

  Dog 
  

  

  ..Yes 
  

  

  No 
  

  

  No 
  

  

  Yes 
  

  

  No! 
  

  

  No. 
  

  

  * 
  Human 
  presence 
  affects 
  range 
  of 
  fly 
  negatively. 
  

  

  0. 
  No 
  evidence 
  either 
  way 
  : 
  animals 
  rare 
  or 
  uncommonly 
  seen 
  by 
  day. 
  

  

  