pdf, 57.71Mb - Entomological Society of Canada
pdf, 57.71Mb - Entomological Society of Canada
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282 I. S. Otvos and F. W. Quednau<br />
Chrys«haris<br />
buidneHae (Ratz.)<br />
(Hymenoptera:<br />
EuJophidae)<br />
Table 75<br />
The establishment <strong>of</strong> the parasitoids was monitored by rearing last-instar larch casebearer<br />
larvae and pupae collected at the release sites. These rearings showed that A.<br />
pumila became established, but its numbers seem to be declining as another parasitoid,<br />
C. laricinellae, is increasing over the years. Quednau (1970) has shown that the<br />
multivoltine C. laricinellae increased at the expense <strong>of</strong> A. pumila in Quebec.<br />
Summad' <strong>of</strong> parasitoid releases and relocations in British Columbia and Quebec between<br />
1969 an 1980<br />
No. and sex <strong>of</strong><br />
Species and locality Lat. Long. Origin parasitoids released Year<br />
Agathis pumiJa (Ratz.)<br />
Fruitvale 49.06"N 117.33o"V Montana 100 M & F 1969<br />
Arrow Creek 49.07"N 116.26"W Montana 100> M & F 1969<br />
Nelway 49.02"N 117.1nV Austria 87M+89F 1974<br />
Blewett 49.28"N 117.2SW France 15 M + 15 F 1974<br />
Creston 49.06"N 116.31o"V Italy 10 M + 24 F 1975<br />
East Arrow 49.09"N 116.26o"V Italy 2OM+32F 1975<br />
Thrums 49.23"N 1l7.33"W Italy 9M+32F 1975<br />
Pass Creek 49.25"N 117.36o"V Italy 17 M + 31 F 1975<br />
Blewett 49.28"N 117.25"W Italy 14 M + 31 F 1975<br />
North Salmo 49.13"N 1l7.l4"W 400 (parasitized larvae) 1976<br />
Christina Lake 49.02"N 118.10"w Austria 25M+30F 1976<br />
Ross Spur 49.11"N 117.28"W Austria 24M+28F 1976<br />
Rossland 49.04"N 1l7.47"W Italy & Austria 16 M + 36F 1977<br />
Cherryville SO.13"N 118.34"W (relocation from l00M& F 1978<br />
Arrow Creek)<br />
Chrysocharis laricinellae (Ratz.)<br />
Thrums 49.23"N 1l7.33"W Switzerland 6 M + 12 F 1974<br />
Shuttleworth Creek 49.1ffl 119.32"W (relocation from 512 M & F 1980<br />
B.C.)<br />
Diadegma laricinellum (Strobl)<br />
South Slocan 49.23"N 1l7.33"W Austria IOM+5F 1974<br />
Thrums 49.23 c N 1l7.33"W Austria 7 M + 5 F 1974<br />
East Arrow 49.09"N 116.26"W Italy 9M + SF 1975<br />
Thrums 49.23°N 1l7.33"W Italy 9M + SF 1975<br />
North Creston 49. 12°N 116.34"W Italy 12 M + 28 F + 25 1976<br />
parasitized larvae<br />
Joliette' 46.02"N 73.27"W own rearings 12 F (mated) 1972<br />
Dicladocerus japonicus Yshm.<br />
Blewett 49.28"N 1l7.25°W Japan 52 M + 215 F 1974<br />
Thrums 49.23°N 1l7.33"W Japan 5M+20F 1974<br />
• Located in Quebec; all others are in British Columbia .<br />
C. laricinellae was apparently introduced in the Pacific Northwest with its host or it was<br />
released inadvertently with the early introductions <strong>of</strong> A. pumila (Ryan et al. 1974). In<br />
1974 a small number <strong>of</strong> imported C. laricinellae were released in British Columbia; in<br />
1980 greater numbers <strong>of</strong> the parasitoid were relocated from older infestations in the<br />
province.
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