Life History and Behavior of the Bramble Leafhopper, Ribautiana tenerrima (H.-S.) (Homoptera: Cicadellidae)

1960 ◽  
Vol 92 (1) ◽  
pp. 10-20 ◽  
Author(s):  
J. Raine
Keyword(s):  
Life History ◽  
North America ◽  
Vancouver Island ◽  
Dry Season ◽  
Lower Fraser Valley ◽  
And Behavior ◽  
Fraser Valley

Since 1947, when the bramble leafhopper, Ribautiana tenerrima (H.-S.) (rubi Hardy, misella 13011.), was first reported in North America near Victoria, B.C., it has become a serious pest in cane fruit plantings on southern Vancouver Island and the lower Fraser Valley. Hoth nymphs and adults suck the sap from the leaves, producing a white stippling on the upper surfaces (Fig. 1). In a dry season a severe infestation causes many leaves to become curled and appear burned. The canes lack vigor and the size of the fruit is reduced. This is a report on a study of the life history and behavior of the species conducted at Victoria from 1953 to 1957.

Identification of planktonic Mallomonadaceae and other Chrysophyceae from selected lakes in the lower Fraser Valley, British Columbia (Canada)

1984 ◽  
Vol 62 (3) ◽  
pp. 525-539 ◽  
Author(s):  
Deborah A. Donaldson ◽  
Janet R. Stein
Keyword(s):  
British Columbia ◽  
North America ◽  
New Records ◽  
The Family ◽  
Lower Fraser Valley ◽  
Fraser Valley

Identification of the Mallomonadaceae of selected lakes in British Columbia reveals 20 species of the genera Chromophysomonas, Chrysosphaerella, Mallomonas, Mallomonopsis, Paraphysomonas, and Synura. The following eight taxa in the family are new records for British Columbia (* indicates those new to North America): Mallomonas asmundiae, M. doignonii var. tenuicostis, M. papillosa, M. transsylvanica, Mallomonopsis ouradion*, Paraphysomonas vestita, Synura glabra, S. splendida*. Thirteen additional Chrysophyceae were also present, with the most diversity observed being in the three lakes studied extensively (Whonock, Como, Munday).

POTASSIUM RELATIONSHIPS IN SOME BRITISH COLUMBIA SOILS

1967 ◽  
Vol 47 (1) ◽  
pp. 49-53
Author(s):  
E. H. Gardner
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Glacial Till ◽  
Fraser River ◽  
Parent Materials ◽  
Exchangeable K ◽  
Lower Fraser Valley ◽  
Fraser Valley

The estimated amounts of micaceous minerals and of certain forms of K, namely total, slowly available, and exchangeable K, varied considerably among soils of southwest British Columbia. The amounts of different forms of K were related to the amounts of micaceous minerals. The amounts of the various forms of K in the soils were related to one another. The Vancouver Island soils formed on marine and glacial till parent materials contained less mica and K than the Lower Fraser Valley soils formed on Fraser river alluvium. In most instances the contents of the various forms of K were not related to the amounts of silt and clay in the soils.

scholarly journals The Biology and Natural History ofAphaenogaster rudis

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
David Lubertazzi
Keyword(s):  
Life History ◽  
North America ◽  
Natural History ◽  
Annual Cycle ◽  
Seasonal Changes ◽  
Hardwood Forests ◽  
Eastern North America ◽  
Population Means ◽  
And Behavior ◽  
Forest Habitats

Workers from the genusAphaenogasterare among the most abundant ants in the hardwood forests of eastern North America. The biology of these so-calledrudis-group ant species, including details about their sociometry, productivity, natural history, and behavior, are synthesized here using published and newly collected data. The latter was collected, in part, using an artificial field nest, and its construction and use are explained. Ants of therudisgroup occur in high densities in forest habitats (0.5–1.3 nests m2), have moderate sized colonies (population means from 266 to 613 workers per nest), and are keystone seed dispersers. Many aspects of their life history and behavior follow an annual cycle that tracks seasonal changes. These include foraging, reproduction, the production of new workers and nest migrations. This synthesis highlights what is known about these ants and reveals gaps in our knowledge that require further study.

The Bramble Leaf hopper, Typhlocyba tenerrima H.-S. (Homoptera: Cicadellidae), A Destructive European Insect New to the Pacific Northwest

1950 ◽  
Vol 82 (3) ◽  
pp. 68-70 ◽  
Author(s):  
Harry Andison
Keyword(s):  
British Columbia ◽  
Pacific Northwest ◽  
Coastal Area ◽  
Vancouver Island ◽  
Economic Damage ◽  
Leaf Hopper ◽  
The Pacific ◽  
Lower Fraser Valley ◽  
Serious Injury ◽  
Fraser Valley

In July, 1947, a leafhopper was found causing serious injury to the foliage of loganberries in the Brentwood area of Vancouver Island, B.C. A survey made at that time in southern Vancouver Island showed that this species was widely distributed, and that it occurred also on raspberries and blackberries. In 1948 it was again found injuring loganberries on Vancouver Island and was found also in the lower Fraser Valley; and in 1949 it was observed 40 miles north of Victoria, at Cowichan Bay, feeding on wild blackberry. It is probable that this species had been present in the coastal area of British Columbia for some time before it was first observed in 1947 causing economic damage.

PANDEMIS HEPARANA (LEPIDOPTERA: TORTRICIDAE), A TORTRICID NEW TO NORTH AMERICA, ESTABLISHED IN BRITISH COLUMBIA

1979 ◽  
Vol 111 (8) ◽  
pp. 970-970 ◽  
Author(s):  
Miktat Doǧanlar ◽  
Bryan P. Beirne
Keyword(s):  
British Columbia ◽  
North America ◽  
Middle East ◽  
Fruit Tree ◽  
Deciduous Trees ◽  
Lower Fraser Valley ◽  
Pandemis Heparana ◽  
A Minor ◽  
Fraser Valley ◽  
Trees And Shrubs

Pandemis heparana Den. and Schiff. is common throughout most of Europe and the Middle East to Siberia, China, Korea, and Japan. It feeds on a wide variety of deciduous trees and shrubs. It is regarded as a minor fruit tree pest in some areas as it can damage flowers and fruit.Three males and four females from a larger number reared from 87 larvae collected in the Lower Fraser Valley, British Columbia, were identified as of this species by Dr. A. Mutuura, Biosystematics Research Institute, Agriculture Canada, Ottawa. It apparently has not been recorded previously from North America.

Relationships between temperature and Pacific hake distribution vary across latitude and life-history stage

2020 ◽  
Vol 639 ◽  
pp. 185-197 ◽  
Author(s):  
MJ Malick ◽  
ME Hunsicker ◽  
MA Haltuch ◽  
SL Parker-Stetter ◽  
AM Berger ◽  
...  
Keyword(s):  
Life History ◽  
Environmental Effects ◽  
Environmental Conditions ◽  
Vancouver Island ◽  
Additive Models ◽  
Life History Stage ◽  
Fish Stocks ◽  
Merluccius Productus ◽  
Multiple Dimensions ◽  
Effects Of Temperature

Environmental conditions can have spatially complex effects on the dynamics of marine fish stocks that change across life-history stages. Yet the potential for non-stationary environmental effects across multiple dimensions, e.g. space and ontogeny, are rarely considered. In this study, we examined the evidence for spatial and ontogenetic non-stationary temperature effects on Pacific hake Merluccius productus biomass along the west coast of North America. Specifically, we used Bayesian additive models to estimate the effects of temperature on Pacific hake biomass distribution and whether the effects change across space or life-history stage. We found latitudinal differences in the effects of temperature on mature Pacific hake distribution (i.e. age 3 and older); warmer than average subsurface temperatures were associated with higher biomass north of Vancouver Island, but lower biomass offshore of Washington and southern Vancouver Island. In contrast, immature Pacific hake distribution (i.e. age 2) was better explained by a nonlinear temperature effect; cooler than average temperatures were associated with higher biomass coastwide. Together, our results suggest that Pacific hake distribution is driven by interactions between age composition and environmental conditions and highlight the importance of accounting for varying environmental effects across multiple dimensions.

Hormones and Behavior

2019 ◽  
pp. 11-26
Author(s):  
Maren N. Vitousek ◽  
Laura A. Schoenle
Keyword(s):  
Life History ◽  
Life Histories ◽  
Life History Traits ◽  
Developmental Plasticity ◽  
Endocrine System ◽  
Phenotypic Traits ◽  
Social Environments ◽  
Trade Offs ◽  
And Behavior

Hormones mediate the expression of life history traits—phenotypic traits that contribute to lifetime fitness (i.e., reproductive timing, growth rate, number and size of offspring). The endocrine system shapes phenotype by organizing tissues during developmental periods and by activating changes in behavior, physiology, and morphology in response to varying physical and social environments. Because hormones can simultaneously regulate many traits (hormonal pleiotropy), they are important mediators of life history trade-offs among growth, reproduction, and survival. This chapter reviews the role of hormones in shaping life histories with an emphasis on developmental plasticity and reversible flexibility in endocrine and life history traits. It also discusses the advantages of studying hormone–behavior interactions from an evolutionary perspective. Recent research in evolutionary endocrinology has provided insight into the heritability of endocrine traits, how selection on hormone systems may influence the evolution of life histories, and the role of hormonal pleiotropy in driving or constraining evolution.

Characterization of gaseous nitrogen oxides in the Lower Fraser Valley during Pacific 2001

2004 ◽  
Vol 38 (34) ◽  
pp. 5811-5823 ◽  
Author(s):  
K.L. Hayden ◽  
K.G. Anlauf ◽  
S.-M. Li ◽  
A.M. Macdonald ◽  
J.W. Bottenheim ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Gaseous Nitrogen ◽  
Lower Fraser Valley ◽  
Fraser Valley
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