Simulated acid rain reduces the susceptibility of the European pine sawfly (Neodiprion sertifer) to its nuclear polyhedrosis virus

Oecologia ◽  
1990 ◽  
Vol 83 (2) ◽  
pp. 209-212 ◽  
Author(s):  
S. Neuvonen ◽  
K. Saikkonen ◽  
E. Haukioja
Keyword(s):  
Acid Rain ◽  
Nuclear Polyhedrosis Virus ◽  
Simulated Acid Rain ◽  
Neodiprion Sertifer ◽  
Pine Sawfly ◽  
Polyhedrosis Virus ◽  
European Pine Sawfly ◽  
Nuclear Polyhedrosis

Estimation of nuclear polyhedrosis virus produced in field populations of the European pine sawfly, Neodiprion sertifer (Geoff.) (Hymenoptera: Diprionidae)

1983 ◽  
Vol 61 (8) ◽  
pp. 1857-1861 ◽  
Author(s):  
W. J. Kaupp
Keyword(s):  
Inclusion Bodies ◽  
Nuclear Polyhedrosis Virus ◽  
Direct Result ◽  
Neodiprion Sertifer ◽  
Sawfly Larvae ◽  
Pine Sawfly ◽  
Early Instar ◽  
European Pine Sawfly ◽  
Nuclear Polyhedrosis ◽  
Appreciable Reduction

The quantity of virus measured as the number of polyhedral inclusion bodies (PIBs) produced and liberated at death from two diseased European pine sawfly (Neodiprion sertifer (Geoff.)) populations was studied over a 3-year period in Britain. As high as 2.3 × 1015 PIBs/ha were produced as a resut of a natural epizootic in one of the populations. Subsequent years saw an appreciable reduction in the quantity of the virus produced, a direct result of the reduction in the number of sawfly larvae infesting each plot. Polyhedra persisting over winter in the host's environment were found to alter the nature of subsequent epizootics by causing virus infection to occur at an earlier stage of larval development than previously observed. This increased the percentage contribution of PIBs from the death of early instar larvae to the total amount of virus produced.

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.

A nuclear polyhedrosis virus of the loblolly pine sawfly, Neodiprion taedae linearis ross

1972 ◽  
Vol 20 (2) ◽  
pp. 220-221 ◽  
Author(s):  
S.Y. Young ◽  
J.M. Livingston ◽  
J.A. McMasters ◽  
W.C. Yearian
Keyword(s):  
Loblolly Pine ◽  
Nuclear Polyhedrosis Virus ◽  
Pine Sawfly ◽  
Polyhedrosis Virus ◽  
Nuclear Polyhedrosis ◽  
Neodiprion Taedae Linearis

Transmission of Nuclear Polyhedrosis Virus Prior to Death of Infected Loblolly Pine Sawfly, Neodiprion taedae linearis Ross, on Loblolly Pine

1998 ◽  
Vol 33 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Seth Y. Young
Keyword(s):  
Digestive Tract ◽  
Loblolly Pine ◽  
Nuclear Polyhedrosis Virus ◽  
Secondary Transmission ◽  
Pine Sawfly ◽  
Polyhedrosis Virus ◽  
Nuclear Polyhedrosis ◽  
High Level ◽  
Neodiprion Taedae Linearis

Nuclear polyhedrosis virus (NPV) was transmitted by infected loblolly pine sawfly, Neodiprion taedae linearis Ross, larvae prior to death on loblolly, pine. Third instars reared on pine foliage previously fed upon for 24 h by NPV-infected larvae at densities of 4 and 16 per terminal resulted in up to 69.9 and 93.1% mortality, respectively, in previously unexposed cohorts. Third instars reared on pine foliage wetted with washings from frass of infected larvae also resulted in a high level of mortality. Results suggest that a high level of secondary transmission of NPV occurs before death of primary-infected larvae. This transmission appears to be the result of NPV in the digestive tract released either through regurgitation or in the feces.

Virus Diseases of Sawflies

1955 ◽  
Vol 87 (3) ◽  
pp. 124-127 ◽  
Author(s):  
F. T. Bird
Keyword(s):  
Introduced Species ◽  
Virus Disease ◽  
Neodiprion Sertifer ◽  
Virus Diseases ◽  
Pine Sawfly ◽  
Pristiphora Erichsonii ◽  
Larch Sawfly ◽  
Polyhedrosis Virus ◽  
European Pine Sawfly

Although a virus disease of the larch sawfly, Pristiphora erichsonii (Htg.), has not been discovered, polyhedrosis viruses of several other Tenthredinids are known. They have been used to control infestations of two introduced species: the European spruce sawfly, Diprion hercyniae (Htg.), (Bird, 1954) and the European pine sawfly, Neodiprion sertifer (Geoffr.), (Bird, 1950, 1952, 1953; Dowden, 1953). Unfortunately, the viruses of these, as well as the viruses of several other species tested, are not pathogenic to the larch sawfly. Some viruses, however, appear to he pathogenic to more than one species. J. M. Burk of this laboratory found, for example, that a polyhedrosis virus affecting the native jackpine sawfly, Neudiprion americanus banksianae Roh., is pathogenic to N. sertifer, N. nanulus Schedl, and D. hercyniae.

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