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LIST 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 FIGURES

Figure

 

   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

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