pdf, 57.71Mb - Entomological Society of Canada
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374 W. G. H. (ves and J. A. Muldrew<br />
Table 95<br />
Species and province<br />
Redistribution releases and recoveries <strong>of</strong> Olesicampe benefactor Hinz and Mesoleius<br />
tenthredinis Morl. against Pristiphora erichsonii (Htg.)<br />
Location <strong>of</strong> release Numbers released<br />
Year <strong>of</strong><br />
Year Origin Lat. long. Males Females Total recovery<br />
"N OW<br />
Olt!sicampt! btlU!factor Hinz<br />
Prince Edward Island 1971 Nova Scotia 46001' 62°44' 157 117 274 1974<br />
1972 Nova Scotia 46"29' 63°58' 198 189 387<br />
Nova Scotia 1973 Nova Scotia 45°14' 62"49' 393 457 8SO<br />
1975 Nova Scotia 45°43' 63"09' 63 1976<br />
1975 Nova Scotia 45°16' 63°18' 20 1976<br />
1976 Nova Scotia 45"21' 61°54' 45 1977<br />
1976 Nova Scotia 45°19' 62°15' 69 1977<br />
Ontario 1976 Minnesota 79"18' 44004' 182 213 395 1977<br />
1978 Manitoba 75°11' 45°12' 30 32 62<br />
Manitoba 1969 Manitoba 49"48' 97"08' 60 53 113 1974<br />
1970 Man. and Sask. 49"19' 96000' 421 443 864 1970<br />
1971 Manitoba 50003' 96°13' 245 262 S07 Already present<br />
1972 Manitoba 49"19' 96000' 75 74 149<br />
Alberta 1972 Manitoba 54°43' 110004' 1283"<br />
1972 Manitoba 54"27' 113°58' 1139" 1973<br />
1972 Manitoba 55001' 119"06' 469- 1973<br />
1973 Alberta 54·30' 112°57' 118 122 240 1974<br />
1975 Manitoba 53"32' 117'04' 51 86 137 1975<br />
1981 Alberta 59"55' 111°43' 36<br />
Northwest Territories 1m Manitoba 60")6' 116006' 856-<br />
1981 Alberta 60"01' 112"07' 332 1981<br />
1981 Alberta 60"01' 110058' 30<br />
British Columbia 1980 Alberta 49"42' 114·55' 170<br />
1980 Alberta 49"29' 115004' 145<br />
1980 Alberta 49"38' 114·56' 150<br />
Mtsoltius Itnlhrt!dinis Morley<br />
Manitoba 1970 Man. and Sask. 4919' 96000' 63 85 148<br />
1971 Manitoba 49"19' 96000' 98 170 268<br />
1m Manitoba 49"19' 96000' 9 42 51<br />
• Estimates only - "small" cocoons were placed in the field, adult parasitoid emergence holes were counted<br />
and proportions <strong>of</strong> O. benefactor and Mesochorus'dimidiatus were based on reared samples.<br />
Meso/eius tenthred;n;s<br />
Morley<br />
(Hymenoptera:<br />
Ichneumonldae)<br />
in 1968. O. benefactor had dispersed 18 km by 1973 and 57 km by 1975,7 years after the<br />
release. Another release, consisting <strong>of</strong> 51 males and 86 females, was made near Obed<br />
Lake, Alberta, in 1975. O. benefactor parasitism near the release area reached 88% by<br />
1979 and 93 % by 1980. Seventeen per cent <strong>of</strong> the larch sawfly larvae in a bog 15 km east <strong>of</strong><br />
the release site were parasitized by O. benefactor in 1980. None had been found in this bog<br />
in 1979.<br />
Dispersal from The Pas and Obed Lake releases, 18 km and 15 km in 5 years, is<br />
considerably greater than the 3 km in 5 years recorded for the initial release at Pine Falls.<br />
This may simply be due to a different set <strong>of</strong> environmental conditions, but it could<br />
indicate that O. benefactor has become better adapted to the Canadian environment.<br />
Redistributions are shown in Table 95.
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