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Damage caused by the Green Spruce Aphid to Norway and Sitka spruce needles
TLDR
Three-month-old needles of Sitka spruce were less susceptible to Elatobium abietinutn than 15-month old needles, and the time taken for needle fall to occur was inversely related to the feeding time in SitKA spruce but such a response was not evident in Norway spruce.
Effects of temperature on overwintering populations of the green spruce aphid Elatobium abietinum
TLDR
Recorded minimum temperatures of – 7 oC or lower noticeably reduced overwintering populations of the green spruce aphid, Elatobium abietinum, in north-east Scotland, suggesting that ice formation in the needles of the host Sitka spruce, caused attached aphids to freeze.
The effects of nitrogen levels in sitka spruce needles on Elatobium abietinum (Walker) populations in North-Eastern Scotland
  • W. Parry
  • Biology, Medicine
    Oecologia
  • 29 April 1974
TLDR
A small, decreasing population of aphids existed which showed reduced rates of development and reproduction and several essential amino acids were in short supply for much of this period.
A comparison of Aphidecta obliteratae (L.) (Col., Coccinellidae) populations feeding on Elatobium abietinum (Walker) and on Adelges cooleyi (Gillette)
TLDR
A. obliterata was the main coccinellid species feeding on both E. abietinum on Sitka spruce and A. cooleyi on Douglas fir during the pre‐diapausal imaginal period, indicating the necessity to conserve energy during the absence of prey in summer.
Acclimatisation in the green spruce aphid, Elatobium abietinum
TLDR
It was concluded that, although freezing was mainly avoided by supercooling, the presence of mannitol lowered the true freezing temperature of aphid haemolymph and, consequently, the actual freezing temperatures of nymphs produced under cold conditions.
Chemical control of sycamore aphid, Drepanosiphum platanoidis (Schr.), with organophosphorous and soap insecticides
TLDR
It was concluded that all of the four most toxic soap formulations merited consideration for aphid control in enclosed or public situations, SIS having the minor disadvantage that it would not delay recolonization by aphids from untreated areas.
THE ARTIFICIAL FEEDING OF PHOSPHAMIDON TO MYZUS PERSICAE: II. THE EFFECTS OF PHOSPHAMIDON ON LIQUID UPTAKE THROUGH A PARAFILM MEMBRANE
TLDR
Choice chamber experiments showed that the light strain of M. persicae preferentially avoids diets containingosphamidon in favour of diets lacking phosphamidon, the presence of the insecticide in the diet greatly increasing the number of abortive probes made.
THE ARTIFICIAL FEEDING OF PHOSPHAMIDON TO MYZUS PERSICAE
TLDR
Some evidence is given which suggests an increased rate of reproduction for aphids which imbibe sub‐lethal doses of phosphamidon, in contrast to results previously obtained on sugar solutions.
Observations on the flight periods of aphids in a Sitka spruce plantation in north-eastern Scotland
TLDR
Flight activity of aphids during 1969–71 in a Sitka spruce plantation in north-eastern Scotland was recorded by means of sticky traps, and it was shown that aerial density was consistently higher at 60 cm.
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