Influence of Host Resistance and Temperature During Dormancy Upon Seasonal History of the Walnut Husk Fly, Rhagoletis Completa Cress.1

1933 ◽  
Vol 26 (4) ◽  
pp. 813-819 ◽  
Author(s):  
A. M. Boyce
Keyword(s):  
Host Resistance ◽  
History Of ◽  
Walnut Husk ◽  
Seasonal History

scholarly journals Codling-moth Investigations of the State Entomologist's Office

1922 ◽  
Vol 14 (1-10) ◽  
pp. 219-289 ◽  
Author(s):  
P. A. Glenn
Keyword(s):  
Life History ◽  
Codling Moth ◽  
Climatic Conditions ◽  
The State ◽  
Accurate Data ◽  
Rate Of Development ◽  
History Of ◽  
Seasonal History

To secure accurate data in regard to the life history and the seasonal history of the codling-moth in Illinois, and the relation of climatic conditions to the rate of development and the time of appearance of the various stages of the insect, an investigation was begun in the spring of 1915 under the direction of Doctor S. A. Forbes, then State Entomologist.

THE BIOLOGY OF CANADIAN BARKBEETLES: THE SEASONAL HISTORY OF DRYOCOETES CONFUSUS SW

1931 ◽  
Vol 63 (11) ◽  
pp. 247-248 ◽  
Author(s):  
W. G. Mathers
Keyword(s):  
Abies Lasiocarpa ◽  
Dryocoetes Confusus ◽  
History Of ◽  
Seasonal History

The seasonal history of Dryocoetes confusus Sw., in trunks of Abies lasiocarpa (Hook) Nutt., as found under cage conditions at Stanley, B.C., during the two years 1929 and 1930 is summarized in the following statement.

STUDIES ON THE BIOLOGY AND SEASONAL HISTORY OF THE CYPRESS BARK MOTH, LASPEYRESIA CUPRESSANA (LEPIDOPTERA: OLETHREUTIDAE)

1971 ◽  
Vol 103 (7) ◽  
pp. 947-961 ◽  
Author(s):  
Gordon W. Frankie ◽  
C. S. Koehler
Keyword(s):  
The Other ◽  
Phloem Tissue ◽  
Two Generations ◽  
History Of ◽  
Seasonal History

AbstractLaspeyresia cupressana (Kearfott) (Lepidoptera: Olethreutidae) bores in the scale tissue of cones, the healthy phloem tissue of branch nodes and trunks, and damaged sites on plants of certain Cupressaceae and Taxodiaceae. The moth primarily attacks Cupressus macrocarpa Hartw. in coastal California where it passes through two generations annually, one in spring–summer and the other in fall–winter. Several parasites and predators were regularly found associated with Laspeyresia in the cones. Branch and trunk feeding occasionally is severe, but was never observed to cause dieback or tree death. The moth was frequently observed infesting sites on plants damaged by the fungus Coryneum cardinale Wagener.

scholarly journals Survey of Corylus Resistance to Anisogramma anomala from Different Geographic Locations

HortScience ◽  
2010 ◽  
Vol 45 (5) ◽  
pp. 832-836 ◽  
Author(s):  
Thomas J. Molnar ◽  
Joseph C. Goffreda ◽  
C. Reed Funk
Keyword(s):  
Genetic Diversity ◽  
Pacific Northwest ◽  
Host Resistance ◽  
Native Range ◽  
Geographic Locations ◽  
Pathogenic Variation ◽  
The Pacific ◽  
Complete Resistance ◽  
Anisogramma Anomala ◽  
History Of

Anisogramma anomala (Peck) E. Müller is the causal agent of the disease eastern filbert blight (EFB) of hazelnuts (Corylus spp.). Little is known of its genetic diversity and pathogenic variation. Most sources of host resistance have been identified in the Pacific Northwest, a region outside the native range of A. anomala believed to have limited diversity of the fungus due to a long history of quarantine and its relatively recent inadvertent introduction. In an attempt to investigate the pathogenic variation of A. anomala, 12 hazelnut genotypes that showed complete resistance in Oregon were inoculated with 12 isolates collected from across its native range. At the conclusion of the study, ‘Grand Traverse,’ ‘Ratoli’, OSU 541.147, OSU 495.072, and OSU 526.041 remained free of disease. ‘Closca Molla’, OSU 759.007, and OSU 587.044 were infected by most isolates. ‘Gasaway’ was infected by the Michigan isolate, which was also the only one to infect its offspring ‘Zimmerman’, although the lesion lacked sporulating stromata. Interestingly, ‘VR20–11’, another offspring of ‘Gasaway’, was infected by isolates from New Jersey, Minnesota, and Michigan. The Michigan isolate also caused the only signs of infection on OSU 408.040.

Some Factors Influencing the Occurrence and Size of the Midsummer Flight of the European Corn Borer, Ostrinia nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Southwestern Ontario

1959 ◽  
Vol 91 (12) ◽  
pp. 798-806 ◽  
Author(s):  
J. A. Mutchmor
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Economic Value ◽  
Light Trap ◽  
The United States ◽  
Corn Borer ◽  
Collection Data ◽  
History Of ◽  
Lepidoptera Pyralidae ◽  
Seasonal History

In southwestern Ontario the European corn borer, Ostrinia nubilalis (Hbn.), produces two flights annually. The first flight, beginning in June, consists of moths from larvae that have overwintered. The midsummer, or second, flight begins late in July or early in August, and its moths are the progeny of the first flight. Until about 20 years ago the borer produced only one annual flight and was thought to be univoltine. The change in the seasonal history of the borer in Ontario was described by Wressell (1953) and Miller (1956). The literature describing similar changes in parts of the United States has been reviewed by Lees (1955) and Everett et al. (1958). Wressell (1953) summarized light trap collection data of moth flights in the Chatham, Ontario, area for the years 1932 to 1951. The summary includes the percentage of the moths that were from the midsummer flight, and it is evident that the size of this flight varies greatly from year to year. Aside from its intrinsic interest, it would be of some economic value to know what governs the size of the midsummer flight. This is a report of studies undertaken to examine the case, and to relate the findings to the larger problem of why the borer now produces a second flight where formerly it produced only one.

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