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Title: Population ecology of Myzus persicae (Sulzer)
Author: Eldin, N.
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1970
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Most of the work described in this thesis was done with the apterous form of Myzus persicae (Sulzer). Different body parts of the 4 nymphal instars and the adult apterae reared at certain constant temperatures (150C, 25°C and 28°C) were measured. Methods suitable for distinguishing the various instars are described and discussed. The effects of constant temperatures (10°C, 15°C, 20°C, 25°C and 29°C) and of two host plants (potatoes and brussels sprouts) on experimental populations of M. persicae were assessed by calculating the intrinsic rates of increase. The effects of critically high and low temperatures on development, size and fecundity were examined and a study made of the ability of aphids to recover when returned to a suitable temperature. Field populations of aphids on potatoes were assessed in 1967 and 1968. Actual and intrinsic rates of increase were calculated. The possible influence of the main biotic and abiotic factors on the population fluctuations were examined and discussed. Experiments were also made using potatoes and brussels sprouts to investigate the effects of different natural enemies and of rainfall on M. persicae populations using exclusion technique and an insecticidal check method.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available