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  OF TABLES  Legner, E. F.  1958. 
  Some effects of aldrin, chlordane, dieldrin and heptachlor  on the European earwig.  M.S. Thesis, Utah State University.  56 pp.   Table     
  1.       Dosages of
  insecticides used in current
  studies....................................................................………………..……...........  13     2.      
  Number of earwigs caught in 24-hour periods during one week of
  trapping using  various baits;                Logan, Utah, 1957 ....................................................................................................................………………………….... 17     3.      
  Mortality of adult and nymphal earwigs in equal proportions noted at
  time each series of experiment              II was concluded. The relative
  effectiveness of fresh applications is compared to materials which had              aged a given number of hours. .
  ...................................................................................................……………………….. 45     4.      
  Mortality of adult earwigs noted at time each series of experiment III
  was concluded. The relative              effectiveness of fresh
  applications is compared to materials which had aged a given number of
  hours……….….... 45      5.      
  Total number of earwigs caught by bait traps placed in plots overnight
  in field tests at Young Ward,              Utah during August 1957 .........................................................................................................……...…………………...
  47   LIST OF FIGURESFigure      
  1.       Make-up of traps used
  in collecting and sampling perations........................................................…………………….... 10      2.      
  Example of laboratory~ arrangement of petri dishes with screen covers
  containing earwigs for             
  observation..................................................................................................................................……………………..…... 10      3.      
  Effects of light dosage rates of chemicals from series of experiments
  conducted in insectary with             earwig nymphs placed in
  containers immediate~ following treatment with
  insecticide. …………………………………22      4.      
  Effects of light dosage rates of chemicals from series of experiments
  conducted in insectary with              earwig nymphs placed in
  containers 190 hours after treatment with insecticide.
  ...................…………………............ 22      5.      
  Effects of light dosage rates of chemicals from series of experiments
  conducted in greenhouse with              equal numbers of adult and
  nymphal earwigs placed in containers immediately following treatment               with
  insecticide....................................................................................................................……………….......……….. 23     
  6.       Effects of light
  dosage rates of chemicals from series of experiments conducted in greenhouse
  with               equal numbers of adult and nymphal earwigs placed in
  containers 204 hours after treatment with              
  insecticide.............................................................................................................................……………….....……….. 23      7.      
  Effects of
  light dosage rates of chemicals from series of experiments conducted in
  greenhouse with               adult earwigs placed in
  containers immediately following treatment with
  insecticide..............………………............ 24     
  8.       Effects of light
  dosage rates of chemicals from series of experiments conducted in greenhouse
  with               adult earwigs placed in
  containers 522 hours
  after treatment with insecticide. .....................………………............. 24     
  9.      Effects of medium
  dosage rates of chemicals from series of experiments conducted in insectary
  with              earwig nymphs placed in containers immediately following
  treatment with insecticide.. ...........……………............ 25    
  10.       Effects of medium
  dosage rates of chemicals from series of experiments conducted in insectary
  with                earwig nymphs placed in containers 75 hours following treatment with insecticide.............……………................ 25     11.      
  Effects of medium dosage rates of chemicals from series of experiments
  conducted in insectary with                earwig nymphs placed in
  containers 143 hours after treatment with insecticide.
  ...................……………............. 25     12.      
  Effects of
  medium dosage rates of chemicals from series of experiments
  conducted in greenhouse                with equal numbers of adult
  and nymphal earwigs placed in containers immediately
  after treatment                with insecticide.
  ......................................................................................................………………………................ 26.      13.      
  Effects of medium dosage rates of chemicals from series of experiments
  conducted in greenhouse                with equal numbers of adult
  and nymphal earwigs placed in containers 233 hours after treatment                with insecticide.
  ...........................................................................................................………………….................. 27     14.      
  Effects of
  medium dosage rates of chemicals from series of experiments conducted in greenhouse                with adult earwigs placed in containers immediately after
  treatment with insecticide.. .........……………........... 27.      15.      
  Effects of medium dosage rates of chemicals from series of experiments
  conducted in greenhouse                with adult earwigs placed in containers
  523 hours following treatment with insecticide ..........……………......... 28     16.      
  Effects of heavy dosage rates of chemicals from series of experiments
  conducted in insectary with               earwig nymphs placed in
  containers immediately following treatment with insecticide...........…………….......... 28.     17.      
  Effects of heavy dosage rates of chemicals from series of experiments
  conducted in insectary with                earwig nymphs placed in
  containers 74 hours after treatment with insecticide.
  ..........................…………........ 29     18.      
  Effects of heavy dosage rates of chemicals from series of experiments
  conducted in greenhouse with                equal numbers of adult and
  nymphal earwigs placed in containers immediately following treatment                with insecticide.
  ..................................................................................................................…………………........ 29.      19.      
  Effects of heavy dosage rates of chemicals from a series of
  experiments conducted in greenhouse                with equal numbers of adult
  and nymphal earwigs placed in containers 208 hours after
  treatment                with insecticide.
  ...................................................................................................................……………….......... 30     20.      
  Effects of heavy dosage rates of chemicals from series of experiments
  conducted in greenhouse with                adult earwigs placed in
  containers immediately following treatment with
  insecticide. ...........…………….......... 30.      21.      
  Effects of heavy dosage rates of chemicals from series of experiments
  conducted in greenhouse with                adult earwigs placed in
  containers 524 hours after treatment with insecticide.
  .....................……………......... 31.      22.      
  Comparative effects of various dosage rates of aldrin using equal
  numbers of adults and nymphs. ………….. 33     23.      
  Comparative effects of various dosage rates of chlordane using equal numbers
  of adults and                nymphs.
  ..............................................................................................................................…………………....... 33.      24.      
  Comparative effects of various dosage rates of dieldrin using equal
  numbers of adults and nymphs. ……….. 34     25.      
  Comparative effects of various dosage rates of heptachlor using equal
  numbers of adults and                nymphs. ..........................................................................................................................…………………......... 34.      26.      
  Comparative effects of various dosage rates of aldrin using adults. .......................................………….......... 35     27.      
  Comparative effects of various dosage rates of chlordane using adults.
  ............................………….............. 35     28.. 
      Comparative effects of
  various dosage rates of dieldrin using
  adults...............................…………................ 36   29.       Comparative effects of various dosage rates of heptachlor using
  adults............................………….............. 36     30.      
  Relative effectiveness of medium dosages of dieldrin at various time intervals following
  the                placement of equal numbers of
  adults and nymphs in containers 233 hours after treatment with                insecticide.
  ..........................................................................................................................……………………38     31.      
  Relative effectiveness of medium dosages of aldrin at various time
  intervals following the placement                of adults in containers
  immediate~ following treatment with
  insecticide...............................……................ 38     32.      
  Relative effectiveness of medium dosages of dieldrin at various time
  intervals following the                 placement of adults in
  containers immediately following treatment with insecticide.
  ..................……........ 39     33.    
    Relative effectiveness of
  medium dosages of heptachlor at various time intervals following the                placement of adults in
  containers immediately following treatment with insecticide......................……....... 39    
  34.       Comparative mortality
  from one second exposure of adult earwigs to treated test
  tubes.......……............. 41    
  35.       Comparative mortality
  from five-second exposure of' adult earwigs to treated test
  tubes..........……......... 41    
  36.       Comparative mortality
  fro~ ten-second exposure of adult earwigs to treated test
  tubes.............……........ 42    
  37.       Comparative mortality
  from l5-second exposure of adult earwigs to treated test.tubes ............……......... 42    
  38.       Comparative mortality
  from 30-second exposure of adult earwigs to treated test
  tubes..............……........ 43    
  39.       Comparative mortality
  from 60-second exposure of adult earwigs to treated test
  tubes................….…… 43    
  40.       Per cent control of
  earwigs in field experiment con-ducted at Young Ward, Utah in August 1957                (percentages based on
  numbers caught in control plots)
  ….........................................................………….48 |