THE POPLAR-AND-WILLOW BORER, STERNOCHETUS (= CRYPTORHYNCHUS) LAPATHI (COLEOPTERA: CURCULIONIDAE), IN BRITISH COLUMBIA

1967 ◽  
Vol 99 (4) ◽  
pp. 411-418 ◽  
Author(s):  
John W. E. Harris ◽  
Harry C. Coppel
Keyword(s):  
British Columbia ◽  
Life Cycle ◽  
Larval Mortality ◽  
Vancouver Island ◽  
Water Emulsion ◽  
Early Instar ◽  
Preferred Hosts ◽  
North Latitude

AbstractA study was made of the poplar-and-willow borer, Sternochetus (= Cryptorhynchus) lapathi (L.) (Coleoptera: Curculionidae), in British Columbia between 1959 and 1964. The borer occurred principally south of 52 degrees north latitude. Willows were the preferred hosts. Ornamentals, hybrids in commercial plantings, and natural growing trees were attacked. The life cycle of the insect on southern Vancouver Island lasted up to 3 years; overwintering took place in early instar and adult stages. Eggs were laid in the bark; larvae mined first in the bark and then in the wood, where pupation took place. Few parasites and predators were found. DDT, dieldrin, and BHC killed adults; lindane (0.5% water emulsion), applied in the spring, caused larval mortality up to 96%.

BLACK-HEADED BUDWORM SPRAYING EXPERIMENTS ON VANCOUVER ISLAND, BRITISH COLUMBIA

1958 ◽  
Vol 34 (3) ◽  
pp. 299-306 ◽  
Author(s):  
G. S. Brown ◽  
A. P. Randall ◽  
R. R. Lejeune ◽  
G. T. Silver
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Time Of Application ◽  
Larval Stages ◽  
Late Instar ◽  
Early Instar ◽  
Degree Of Control ◽  
Aerial Spraying ◽  
Droplet Density

Aerial spraying experiments were carried out against the black-headed budworm, Acleris variana (Fern.), to determine the effectiveness of DDT sprays against the different larval stages, dosage requirements, and time of application. Two series of plots were sprayed, the first against the early-instar larvae and the second against late-instar larvae. Each series received dosages of 1 pound of DDT per Imperial gallon per acre and ½ pound DDT per ½ gallon per acre.Excellent control of larvae in all stages was obtained by the two dosage rates. The degree of control was more closely related to droplet density than to dosage. The best time to begin spraying for maximum foliage protection is when the majority of larvae are in the second instar.

The plainfin midshipman’s soundscape at two sites around Vancouver Island, British Columbia

2018 ◽  
Vol 603 ◽  
pp. 189-200 ◽  
Author(s):  
WD Halliday ◽  
MK Pine ◽  
APH Bose ◽  
S Balshine ◽  
F Juanes
Keyword(s):  
British Columbia ◽  
Vancouver Island

Production of uredinia and telia by stalactiform blister rust in British Columbia

1993 ◽  
Vol 71 (3) ◽  
pp. 519-521 ◽  
Author(s):  
B. J. van der Kamp
Keyword(s):  
British Columbia ◽  
Life Cycle ◽  
Key Words ◽  
Alternate Host ◽  
Alternate Hosts ◽  
Blister Rust ◽  
Dry Areas ◽  
Do So

Records of uredinia and telia production on the alternate hosts of Cronartium coleosporioides in British Columbia and inoculation of Castilleja miniata with aeciospores collected from various locations showed that rust isolates from dry areas of the interior of British Columbia do not produce uredinia and may have lost the ability to do so. Collections from somewhat wetter areas produced uredinia or mixtures of uredinia and telia immediately following aeciospore inoculations, and field collections from such areas in June commonly had mixtures of uredinia and telia. Loss of the uredinial stage may be a response to climates that are often unsuitable for the spread or survival of the rust on the alternate host. Key words: stalactiform rust, uredinia, telia, rust life cycle.

scholarly journals A rare genotype of Cryptococcus gattii caused the cryptococcosis outbreak on Vancouver Island (British Columbia, Canada)

2004 ◽  
Vol 101 (49) ◽  
pp. 17258-17263 ◽  
Author(s):  
S. E. Kidd ◽  
F. Hagen ◽  
R. L. Tscharke ◽  
M. Huynh ◽  
K. H. Bartlett ◽  
...  
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Cryptococcus Gattii

Eutardigrada from Vancouver Island, British Columbia, Canada, including a description of Platicrista cheleusis n.sp.

1990 ◽  
Vol 68 (9) ◽  
pp. 1880-1895 ◽  
Author(s):  
R. Deedee Kathman
Keyword(s):  
British Columbia ◽  
Vancouver Island

Thirty-one species of eutardigrades were collected on five mountains on Vancouver Island, British Columbia, during July 1986 and July 1987. Three of the species found were new to science, including 1 species, Platicrista cheleusis n.sp., described herein and 2 species described elsewhere, and 21 others are new to British Columbia; 13 of these are also new to Canada.

Sign in / Sign up

Export Citation Format

Share Document