Linda Macdonald

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Green leaf volatiles (GLVs) function as host attractants, pheromone synergists, or sexual kairomones for a number of coleopteran folivores. Hence, we focused on host GLVs to determine if they were attractive to adults of the emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae), which feeds on ash (Fraxinus) foliage. Eight GLVs were identified by(More)
The copulatory behavior of the male whitemarked tussock moth,Orgyia leucostigma, was released by extracts of female body scales applied to rubber septum models baited with a female sex pheromone gland. The major compounds in the scale extracts were identified by GC-MS as a series ofn-alkanes from C-21 to C-29. Of(More)
Feeding damage by larval coneworms (Lepidoptera: Pyralidae) on flowers and cones of pines can cause significant economic losses in pine seed orchards in the southern USA (Ebel et al. 1980, USDA Forest Service GTR SE-8, Asheville, NC). The south coastal coneworm, Dioryctria ebeli Mutuura & Monroe, is a common pest in seed orchards of slash pine (Pinus(More)
BACKGROUND The purpose of this study was to compare classifications of subjects as underweight, normal weight, or obese by body mass index (BMI) and the ratio of body weight to ideal weight (W/IW). METHODS We performed a theoretical comparison of the 2 indices. We compared classifications of the degree of obesity in 1839 women and 5914 men who were(More)
INTRODUCTION High birth and immigration rates in the US-Mexico border region have led to large population increases in recent decades. Two national, 10 state, and more than 100 local government entities deliver reproductive health services to the region's 14 million residents. Limited standardized information about health risks in this population hampers(More)
BACKGROUND This study aimed to determine whether patients with lower abdominal symptoms can be investigated quickly using results of faecal haemoglobin concentration (f-Hb) measurements, and whether this test could form part of a diagnostic pathway for significant colorectal disease. METHODS Nine hundred and nine consecutive patients referred from primary(More)
  • L MacDonald
  • 1988
A methodology was described for operationalizing the terms occasionally and frequently on the Maladaptive Behavior Scale (MacDonald & Barton, 1986), previously developed by modifying Part II of the AAMD Adaptive Behavior Scale. The modal ratings obtained from staff members of 28 rehabilitation agencies were used to define numerically these terms on a(More)
Thank you for inviting me to speak today. It is quite an honor to be among a distinguished group of colleagues who recognize the importance of balancing progress for humanity with advances in technology. Although I did not have the honor of meeting Walter C. Randall, from what I've learned of the man, he was a thoughtful, considerate man, who promoted(More)
This exercise was undertaken to determine whether using a closed video presentation platform as part of a first-year university course could be an aid in teaching public speaking, which could, in turn, support the use of such a system in a blended learning environment. We reviewed grades given by self and peers on video presentations, as well as grades(More)
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