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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 |