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1. Registration of low neurotoxin content lathyrus germplasm LS 8246

Author:
Briggs, C.J.,   et al.   ; Campbell, C.G.;     Show all 2 Author
Source:
Crop science 1987 v.27 no.4 pp. 821
ISSN:
0011-183X
Subject:
Lathyrus sativus; germplasm releases; neurotoxins; Manitoba
DOI:
10.2135/cropsci1987.0011183X002700040055x

2. Aggregation and stability in metapopulation models

Author:
Briggs, C.J.,   et al.   ; Murdoch, W.W.; Nisbet, R.M.; Gurney, W.S.C.; Stewart-Oaten, A.;     Show all 5 Authors
Source:
American naturalist 1992 v.140 no.1 pp. 41-58
ISSN:
0003-0147
Subject:
predators; parasitoids; predator-prey relationships; population dynamics; models
DOI:
10.1086/285402
PubMed:
19426065

3. Competition among parasitoid species on a stage-structured host and its effect on host suppression

Author:
Briggs, C.J.
Source:
American naturalist 1993 v.141 no.3 pp. 372-397
ISSN:
0003-0147
Subject:
insect pests; parasitoids; ecological competition; population density; models
DOI:
10.1086/285479

4. Factors affecting distribution of the gall forming midge Rhopalomyia californica (Diptera: Cecidomyiidae)

Author:
Briggs, C.J.,   et al.   ; Latto, J.;     Show all 2 Author
Source:
Environmental entomology 1995 v.24 no.3 pp. 679-686
ISSN:
0046-225X
Subject:
Rhopalomyia; Baccharis pilularis; geographical distribution; geographical variation; galls; biological development; mortality; predation; parasitism; host plants; plant pests; host preferences; California
Abstract:
... The cecidomyiid midge, Rhopalomyia californica Felt, forms galls on the perennial evergreen shrub Baccharis pilularis De Candolle, which is found in coastal regions throughout central California. R. californica, however, is not found in the more southern part of its host's range and is essentially absent south of Santa Barabara. Reasons for this restricted distribution were examined by field exper ...
DOI:
10.1093/ee/24.3.679

5. The window of vulnerability and its effect on relative parasitoid abundance

Author:
Briggs, C.J.,   et al.   ; Latto, J.;     Show all 2 Author
Source:
Ecological entomology 1996 v.21 no.2 pp. 128-140
ISSN:
0307-6946
Subject:
parasitism; parasitoids; Rhopalomyia californica; host-parasite relationships; models; duration; interspecific competition; population density; biological resistance; galls; California
Abstract:
... The length of time that a gall-forming midge, Rhopalomyia californica, was vulnerable to attack by four parasitoid species was measured in the field at two locations. The midge had a restricted window of vulnerability to each of the parasitoid species, but similar windows of vulnerability were found at the two sites. A stage-structured model was used to illustrate that the length of the vulnerable ...
DOI:
10.1111/j.1365-2311.1996.tb01179.x

6. Trypsin inhibitor activity in field pea (Pisum sativum L.) and grass pea (Lathyrus sativus L.)

Author:
Briggs, C.J.,   et al.   ; Wang, X.; Warkentin, T.D.; Oomah, B.D.; Campbell, C.G.; Woods, S.;     Show all 6 Authors
Source:
Journal of agricultural and food chemistry 1998 v.46 no.7 pp. 2620-2623
ISSN:
0021-8561
Subject:
peas; Pisum sativum; Lathyrus sativus; cultivars; trypsin; trypsin inhibitors; antinutritional factors; protein content; crop yield; correlation; heritability; genotype-environment interaction; nutritive value; Manitoba
Abstract:
... Trypsin inhibitors in grain legumes decrease the digestibility of protein and cause pancreatic enlargement. Seed samples of 17 field pea cultivars grown at 5 locations and 9 grass pea lines grown at 2 locations in western Canada during 1993 and 1994 were analyzed for trypsin inhibitor activity (TIA). TIAs in field pea differed significantly among cultivars. Mean TIA in field pea ranged from 2.22 t ...
DOI:
10.1021/jf971007b

7. Effect of Microenvironment on Development of a Gall Midge

Author:
Briggs, C.J.,   et al.   ; Boukili, V.K.S.; Hoopes, M.F.;     Show all 3 Authors
Source:
Environmental entomology 2007 v.36 no.2 pp. 441-450
ISSN:
0046-225X
Subject:
temperature; stem elongation; galls; Rhopalomyia californica; host plants; light intensity; environmental factors; wind speed; seasonal variation; insect development; insect reproduction; cages; Baccharis pilularis; California
Abstract:
... This study assessed the influence of microenvironment on the establishment and relative reproductive success of the gall-forming midge Rhopalomyia californica Felt on its host plant Baccharis pilularis De Candolle in Marin County, CA. Mesh cages were used to alter the microenvironment, which also allowed us to assess the validity of using these types of experimental manipulations in this system. T ...
DOI:
10.1603/0046-225X(2007)36[441:EOMODO]2.0.CO;2
PubMed:
17445380

8. Rutin and flavonoid contents in three buckwheat species Fagopyrum esculentum, F. tataricum, and F. homotropicum and their protective effects against lipid peroxidation

Author:
Briggs, C.J.,   et al.   ; Jiang, P.; Burczynski, F.; Campbell, C.; Pierce, G.; Austria, J.A.;     Show all 6 Authors
Source:
Food research international 2007 v.40 no.3 pp. 356-364
ISSN:
0963-9969
Subject:
Fagopyrum tataricum; rutin; cultivars; lipid peroxidation; plant extracts; Fagopyrum esculentum; low density lipoprotein; antioxidant activity; antioxidants; cholesteremic effect; buckwheat
Abstract:
... This study was conducted to investigate the rutin content of three buckwheat species: Fagopyrum esculentum, Fagopyrum tataricum and Fagopyrum homotropicum, and to evaluate their antioxidant capacity. In total, 11 cultivars/accessions were analyzed. The contents of both rutin and total flavonoids were significantly different depending on species, 0.02% and 0.04% in F. esculentum, 0.10% and 0.35% in ...
DOI:
10.1016/j.foodres.2006.10.009

9. Multiple Sources of Isotopic Variation in a Terrestrial Arthropod Community: Challenges for Disentangling Food Webs

Author:
Briggs, C.J.,   et al.   ; Daugherty, M.P.;     Show all 2 Author
Source:
Environmental entomology 2007 v.36 no.4 pp. 776-791
ISSN:
0046-225X
Subject:
plant tissues; food webs; Pyrus communis; arthropod communities; community structure; biological control agents; predatory arthropods; herbivores; carbon nitrogen ratio; Cacopsylla pyricola; stable isotopes; omnivores
Abstract:
... Documenting trophic links in a food web has traditionally required complex exclusion experiments coupled with extraordinarily labor-intensive direct observations of predator foraging. Newer techniques such as stable isotope analysis (SIA) may facilitate relatively quick and accurate assessments of consumer feeding behavior. Ratios of N and C isotopes are thought to be useful for determining specie ...
DOI:
10.1603/0046-225X(2007)36[776:MSOIVI]2.0.CO;2
PubMed:
17716468

10. Bottom-up and top-down control of pear psylla (Cacopsylla pyricola): Fertilization, plant quality, and the efficacy of the predator Anthocoris nemoralis

Author:
Briggs, C.J.,   et al.   ; Daugherty, M.P.; Welter, S.C.;     Show all 3 Authors
Source:
Biological control 2007 v.43 no.3 pp. 257-264
ISSN:
1049-9644
Subject:
Cacopsylla pyricola; population density; population growth; nitrogen fertilizers; fertilizer rates; Pyrus communis; pears; plant growth; nitrogen content; predatory insects; natural enemies; Anthocoris nemoralis; predation; biological control agents; tritrophic interactions; insect control
Abstract:
... Herbivore population dynamics are governed both by bottom-up (plant-mediated) and by top-down (natural enemy-mediated) processes, with the potential for interaction between them. Pear psylla (Cacopsylla pyricola Foërster) is a phytophagous pest in pear orchards. Pear psylla is commonly attacked by several different natural enemies, but it may escape control, especially if fertilizer additions and ...
DOI:
10.1016/j.biocontrol.2007.09.001

11. Influence of Abiotic and Environmental Factors on the Density and Infection Prevalence of Ixodes pacificus (Acari: Ixodidae) with Borrelia burgdorferi

Author:
Briggs, C.J.,   et al.   ; Swei, A.; Meentemeyer, R.;     Show all 3 Authors
Source:
Journal of medical entomology 2011 v.48 no.1 pp. 20-28
ISSN:
0022-2585
Subject:
Borrelia burgdorferi; Ixodes pacificus; Lyme disease; Quercus; disease vectors; dry season; environmental factors; forests; habitats; microclimate; nymphs; risk; temperature; ticks; United States
Abstract:
... The abiotic and biotic factors that govern the spatial distribution of Lyme disease vectors are poorly understood. This study addressed the influence of abiotic and biotic environmental variables on Ixodes pacificus Cooley & Kohls (Acari: Ixodidae) nymphs, because it is the primary vector of Borrelia burgdorferi Johnson, Schmidt, Hyde, Steigerwaldt & Brenner in the far-western United States. Three ...
DOI:
10.1603/ME10131
PubMed:
21337944