Oviposition and feeding on red pine by jack pine budworm at a previously unrecorded scale

2016 ◽  
Vol 18 (3) ◽  
pp. 214-222
Author(s):  
Samuel J. Fahrner ◽  
Jana S. Albers ◽  
Michael A. Albers ◽  
Todd Lanigan ◽  
Robert Murphy ◽  
...  
Keyword(s):  
Jack Pine ◽  
Red Pine ◽  
Jack Pine Budworm

Analysis and modelling of cohort life tables of jack pine seed cones

1994 ◽  
Vol 24 (8) ◽  
pp. 1579-1592 ◽  
Author(s):  
Peter De Groot ◽  
Richard A. Fleming
Keyword(s):  
Mortality Rate ◽  
Jack Pine ◽  
Life Tables ◽  
Red Pine ◽  
Northern Ontario ◽  
The North ◽  
Pine Cone ◽  
Seed Cone ◽  
Jack Pine Budworm ◽  
Specific Mortality

Life tables for jack pine (Pinusbanksiana Lamb.) seed cones were constructed for cohorts at three sites in northern Ontario from 1985–1987 to determine the causes and temporal sequence of mortality. Seed cone abortion and feeding by the red squirrel, Tamiasciurushudsonicus (Erxleben), accounted for 65–75% of mortality. Insects killed about 4% of the total cone crop. Losses from the jack pine budworm, Choristoneurapinuspinus Freeman, the webbing coneworm, Dioryctriadisclusa Heinrich, and the red pine cone borer, Eucosmamonitorana Heinrich, combined, accounted for about 1%, while the cone resin midge, Asynaptahopkinsi Felt, and the red pine cone beetle, Conophthorusresinosae Hopkins, each killed about 1%. Three models, linear-exponential, Gompertz, and Weibull, were examined to describe seed cone survivorship curves, of which the Weibull generally gave concise descriptions and fitted very well. Significantly different patterns of cone survival occurred at different sites during the same period, and at the same site over different periods. The age-specific mortality rate increased with age most slowly in the bottom third of the tree's crown. There were significant differences in the age-specific mortality rate among the north, south, east, and west aspects in the same cohort, but there was no consistent pattern among cohorts, or between trees within a cohort.

The Jack-Pine Budworm as a Pest of Other Conifers with Special Reference to Red Pine.1

1961 ◽  
Vol 54 (6) ◽  
pp. 1221-1224 ◽  
Author(s):  
Herbert M. Kulman ◽  
Alexander C. Hodson
Keyword(s):  
Special Reference ◽  
Jack Pine ◽  
Red Pine ◽  
Jack Pine Budworm

The Effect of Jack-pine Staminate Flowers on the Size of Larvae of the Jack-pine Budworm, Choristoneura sp.

1950 ◽  
Vol 82 (2) ◽  
pp. 34-43 ◽  
Author(s):  
R. R. Lejeune
Keyword(s):  
Jack Pine ◽  
New Variety ◽  
Early Stages ◽  
Northwestern Ontario ◽  
Jack Pine Budworm

The jack-pine budworm, Ohoristoneura sp., was first recorded by Graham (5, 6) as a new variety or race on jack pine. Subsequent studies by Graham (6 showed that in the early stages of their development the larvae of this insect prefer jack-pine staminate flowers as a habitat. Population records from Manitoba and northwestern Ontario indicate that infestations of the jack-pine budworm are invariably associated with an abundance of staminate flowers.

Estimation de la production de jeunes plantations de pin rouge et de pin gris du sud du Québec

1976 ◽  
Vol 6 (4) ◽  
pp. 478-486 ◽  
Author(s):  
H. A. Bolghari
Keyword(s):  
Multiple Regression ◽  
Jack Pine ◽  
Red Pine ◽  
Pine Plantations ◽  
Regression Equations ◽  
Pine Plantation ◽  
South Shore ◽  
Pine Stands ◽  
Natural Stands ◽  
St Lawrence River

Multiple regression equations have been developed to predict yield from young red pine and jack pine plantations. Data from 446 sample plots representing young red pine and jack pine stands located on the south shore of the St. Lawrence River between Quebec and Montreal were analysed. The red pine plantation yielded more than the jack pine. However, in plantation both species yield more than in natural stands. Taking into account the age and spacing of the sampled plantations, the equation obtained can provide information on yield of red pine and jack pine stands the maximum spacing of which is 3 × 3 m, up to the age of 45 and 35 years respectively. The equations will allow the construction of preliminary yield tables for both species.

Pathogenicity of Bursaphelenchusxylophilus on three species of pine

1987 ◽  
Vol 17 (1) ◽  
pp. 51-57 ◽  
Author(s):  
P. J. Bedker ◽  
M. J. Wingfield ◽  
R. A. Blanchette
Keyword(s):  
Jack Pine ◽  
Red Pine ◽  
Pine Wood Nematode ◽  
Pine Wood ◽  
Water Extracts ◽  
Pine Trees ◽  
Branch Death

Three species of 11-year-old pine trees were inoculated with Bursaphelenchusxylophilus in the field. Four branches in single whorls on red, Scots, and jack pine trees were wounded and inoculated with 10 000 nematodes each or with water extracts from Botrytiscinerea cultures. Prior to field inoculations, the pathogenicity of the nematode isolate was confirmed on seedlings in the greenhouse. Fourteen weeks after inoculation, 27 of 80 and 13 of 52 branches were dead or dying on Scots and jack pine trees, respectively. No symptoms were observed on red pine trees inoculated with B. xylophilus or on any controls. Branch death was attributed to the formation of girdling cankers resulting from inoculation. An average of 9.14, 10.39, and 0.02 nematodes were extracted per gram of wood from branch samples collected from Scots, jack, and red pine trees at 14 weeks, respectively, and at 58 weeks an average of 13.82, 1.01, and 0.05 nematodes per gram of wood sampled were recovered. Proportions of branch samples with nematodes declined from 14 to 58 weeks after inoculation. Although limited mortality of branches occurred, the pine wood nematode was not found to cause tree death following inoculation.

Critical period of interspecific competition for four northern conifers: 10-year growth response and associated vegetation dynamics

2006 ◽  
Vol 36 (10) ◽  
pp. 2474-2485 ◽  
Author(s):  
Robert G Wagner ◽  
Andrew P Robinson
Keyword(s):  
Interspecific Competition ◽  
Critical Period ◽  
Black Spruce ◽  
Jack Pine ◽  
Red Pine ◽  
Growth Responses ◽  
White Pine ◽  
Conifer Species ◽  
Stand Volume ◽  
Vegetation Control

The influence of the timing and duration of interspecific competition on planted jack pine (Pinus banksiana Lamb.), red pine (Pinus resinosa Ait.), eastern white pine (Pinus strobus L.), and black spruce (Picea mariana (Mill.) BSP) was assessed using 10-year growth responses in a northern Ontario experiment. Stand volume was 117%, 208%, 224%, and 343% higher for jack pine, red pine, white pine, and black spruce, respectively, with 5 years of vegetation control than with no vegetation control. Stand volume increased linearly with number of years of vegetation control, and the slope of the relationship varied among conifer species. Change-point regression analysis was used to derive segmented weed-free and weed-infested curves, and to simultaneously estimate key critical-period parameters. Weed-free and weed-infested curves in the 10th year were similar to those derived in year 5, indicating that the patterns established during the first few years after planting were relatively robust for the first decade. The critical-period was 2 and 3 years after planting for jack pine and red pine, respectively, and occupied most of the 5-year period for white pine and black spruce. Principal components analysis of the vegetation community indicated that repeated herbicide applications caused differential shifts in the relative abundance of shrub, fern, and moss species through the 10th year. Species richness, however, was not substantially different between the untreated control and the most intensive treatments. Difference modeling was used to quantify how annual volume increment during the first decade varied with time, conifer species, cover of woody and herbaceous vegetation, and stage of development.

Consumption of jack-pine budworm, Choristoneura pinus Freeman, by the eastern chipping sparrow, Spizella passerina (Bechstein)

1974 ◽  
Vol 52 (7) ◽  
pp. 817-821
Author(s):  
Gary A. Simmons ◽  
Norman F. Sloan
Keyword(s):  
Average Rate ◽  
Life Forms ◽  
Jack Pine ◽  
Bird Populations ◽  
Choristoneura Pinus ◽  
Jack Pine Budworm ◽  
Consumption Rates ◽  
Observation Cage ◽  
Spizella Passerina ◽  
Northern Michigan

Predation by the eastern chipping sparrow, Spizella passerina (Bechstein), on the jack-pine budworm, Choristoneura pinus Freeman, was investigated in northern Michigan. Singing-male counts and bird-banding records provided estimates of bird populations, budworm consumption rates were estimated from observation cage results, and budworm populations were estimated from branch sample counts. Average rate of consumption of all life forms of the budworm was 7.8/h per bird and remained nearly the same regardless of the number of life stages of the budworm available. Overall consumption was 3000/acre (7500/ha) for adults, 600/acre (1500/ha) for juveniles, and 300/acre (750/ha) for nestlings over a 22-day feeding period, resulting in 0.92% budworm mortality. Methods of estimating juvenile and nestling consumption of budworm are presented.

Relating jack pine budworm damage to stand inventory variables in northern Michigan

1996 ◽  
Vol 26 (12) ◽  
pp. 2180-2190 ◽  
Author(s):  
Deborah G. McCullough ◽  
Lyle J. Buss ◽  
Larry D. Marshall ◽  
Jari Kouki
Keyword(s):  
Tree Mortality ◽  
Basal Area ◽  
Site Index ◽  
The United States ◽  
Jack Pine ◽  
Inventory Data ◽  
Upper Peninsula ◽  
Jack Pine Budworm ◽  
Lake States ◽  
Northern Michigan

Stand-level mortality and top kill from a 1991–1993 jack pine budworm (Choristoneurapinuspinus Freeman) outbreak were surveyed annually in the Raco Plains area of the Hiawatha National Forest in Michigan's Upper Peninsula from 1992 to 1994. Defoliation was visually estimated and percentage of trees killed or top killed was determined in 104 stands. In 1994, tree mortality attributable to the outbreak averaged 8% and 17% of trees had dead tops. Current stand inventory data, including age, site index, basal area, and size, were acquired from the Hiawatha Forest. Stands were grouped on the basis of inventory variables used for jack pine management in the Lake States region of the United States. Differences in tree mortality and top kill between groups, and associations between tree mortality and inventory variables, were evaluated. Tree mortality was greater in overmature stands and in overstocked stands, but stand size had little effect. Contrary to expectations, mortality was lower on poor sites with low site index values than on better sites with higher site index values. Mortality was not related to abundance of open-grown, full-canopied wolf trees or to abundance of trees infected with pine gall rust (Endocronartiumharknessii (J.P. Moore) Y. Hiratsuka (=Peridermiumharknessii J.P. Moore)). Amount of top kill was related to defoliation severity and was higher in overmature and understocked stands. Top kill was not strongly associated with amount of tree mortality or with inventory variables.

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