Notes on Parasites of Diprionidae in Europe and Japan and Their Establishment in Canada on Diprion hercyniae (Htg.) (Hymenoptera: Diprionidae)

1958 ◽  
Vol 90 (9) ◽  
pp. 557-563 ◽  
Author(s):  
L. R. Finlayson ◽  
Thelma Finlayson
Keyword(s):  
Neodiprion Sertifer

Approximately 32 million cocoons of 11 species of spruce- and pine-feeding sawflies were collected in Europe and Japan from 1933 to 1940 and sent to the Belleville laboratory for rearing parasites for release in Canada against the European spruce sawfly, Diprion hercyniae (Htg.). Over half a million of the cocoons were Diprion polytomum (Htg.) and the parasites that emerged from these were discussed in previous papers (Finlayson and Reeks, 1936; Finlayson and Finlayson, in preparation). In addition to cocoons, almost half a million eggs of Neodiprion sertifer (Geoff.) were collected in Europe and reared to obtain egg parasites.

scholarly journals Heavy metal concentrations in males and females of three pine diprionids (Hymenoptera)

1990 ◽  
Vol 1 (3) ◽  
pp. 175-179 ◽  
Author(s):  
Kari Heliövaara ◽  
Rauno Väisänen ◽  
Eero Kemppi ◽  
Martin Lodenius
Keyword(s):  
Heavy Metal ◽  
Scots Pine ◽  
Neodiprion Sertifer ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Diprion Pini ◽  
First Instar ◽  
Unpolluted Site ◽  
Males And Females

Heavy metal concentrations (Cu, Fe, Ni, Cd) in the cocoons of three gregarious pine diprionids, Gilpinia socia, Diprion pini and Neodiprion sertifer, were compared between the species and sexes. The sawflies were reared in the laboratory in colonies from the first instar larvae, being fed on Scots pine (Pinus sylvestis) needles collected from a heavily polluted or a relatively unpolluted site. The levels of copper, iron and nickel were two to three times as high in N. sertifer as in the two other species. Cadmium showed bioaccumulation in all three species. In N. sertifur and G. socia reared on polluted needles, the metal concentrations were higher in males than in females.

Variations in the photoperiodic response of Neodiprion sertifer

1968 ◽  
Vol 46 (5) ◽  
pp. 1082-1083 ◽  
Author(s):  
C. R. Sullivan ◽  
D. R. Wallace
Keyword(s):  
Natural Populations ◽  
Photoperiodic Response ◽  
Neodiprion Sertifer ◽  
Larval Rearing ◽  
Single Population ◽  
Rearing Temperature

Natural populations of N. sertifer, located at about the same latitude in Ontario, differ considerably in their response to photoperiods inducing non-diapause when reared as larvae at identical temperatures. In addition, within a single population, the incidence of non-diapause varies inversely with larval rearing temperature.

PERSISTENCE AND DISPERSAL OF THE NUCLEAR POLYHEDROSIS VIRUS OF NEODIPRION SERTIFER (GEOFFROY) (HYMENOPTERA: DIPRIONIDAE) IN A VIRUS-FREE LODGEPOLE PINE PLANTATION IN SWEDEN

1988 ◽  
Vol 120 (10) ◽  
pp. 887-892 ◽  
Author(s):  
Einar Olofsson
Keyword(s):  
Nuclear Polyhedrosis Virus ◽  
Lodgepole Pine ◽  
Larval Mortality ◽  
Neodiprion Sertifer ◽  
Experimental Plot ◽  
Pine Plantation ◽  
Larval Population ◽  
Polyhedrosis Virus ◽  
Nuclear Polyhedrosis ◽  
High Level

AbstractAn outbreak of Neodiprion sertifer (Geoffroy) was studied in a lodgepole pine plantation. It was the first tree generation on a 60-ha peatland area. The nuclear polyhedrosis virus (NPV) of N. sertifer was not found in the larval population or in the soil. Within a 1.7-ha experimental plot, a 0.35-ha block was treated with NPV and the ensuing epizootic was studied during three successive summers. The treatment caused 50% mortality of fourth- and fifth-instar larvae. The NPV persisted in the treated block and gradually dispersed into the adjacent blocks. After 2 years, larval mortality was 78% in the treated block and 21% at a distance of 110–125 m from it. The larval population remained at a high level and the outbreak expanded from the experimental plot to the entire 60-ha area in the years following the virus treatment, but few virus-diseased colonies were observed outside the experimental plot. Thus, the capability of this NPV to persist and spread was not sufficient to control and contain the sawfly outbreak.

Field response of the pine sawfly Neodiprion sertifer to the pheromone (2S, 3S, 7S)-diprionyl acetate and its stereoisomers

1992 ◽  
Vol 62 (2) ◽  
pp. 169-181 ◽  
Author(s):  
O. Anderbrant ◽  
J. Löfqvist ◽  
H.-E. Högberg ◽  
E. Hedenström ◽  
A.-B. Wassgren ◽  
...  
Keyword(s):  
Neodiprion Sertifer ◽  
Pine Sawfly ◽  
Field Response
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