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You searched for: Author "Briggs, C.J." Remove constraint Author: "Briggs, C.J." Subject Cacopsylla pyricola Remove constraint Subject: Cacopsylla pyricola Subject Pyrus communis Remove constraint Subject: Pyrus communis
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1. 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

2. 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