Forest Insect and Disease Survey; Ontario, 1965 - NFIS

A light trap was set up at Remi Lake in 1961 in Fauquier Township to capture
moths. Since the trap is situated about 100 miles east of the heavy infestation,
the number of moths captured reflects local populations rather than those in the
western part of the district. The results of five years use of the light trap are
shown in Table 7.
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TABLE 7
Synopsis of Light Trap Results in the Kapuskasing District from
1961 to 1965
Year 1961 1962 1963 1964 1965
No. of moths 1 1 13 8
Five mass collections of cocoons were dissected from Burrell Township and on
the periphery of the infestation centred in Township 138. The results show an
unusually low degree of successful moth emergence, Table 8.
TABLE 8
Summary of cocoon Dissection Results in the Kapuskasing District
in 1965
Location
(township)
Emerged Diseased
Per cent of cocoons
Predation Parasitized Unsuc.Emerg,
Doubtful
Burrel 8 4 0 88 0 0
138 (North) 8 3 5 81 0 2
138 (East) 17 2 25 54 2 0
138 (South) 4 4 16 74 1 0
138 (West) 6 6 6 82 0 0
Egg band counts made in the two remote areas of infestation to forecast
defoliation (Table 9) revealed high numbers of eggs and severe defoliation of aspen
stands is expected in 1966.
TABLE 9
Infestation Forecasts for the Kapuskasing District for 1966
Location No. of trees Av. Ave height Av. No, of egg Defoliation
(township examined d,b,h. in feet bands per tree forecast
138 3 10 78 23 Severe
Bicknell 3 14 30 28 Severe