Australian Journal of Entomology (2001) 40, 49-55

Alan L. Bishop, Anne M. Harris and Harry J. McKenzie (2001)
Distribution and ecology of the lucerne flea, Sminthurus viridis (L.) (Collembola: Sminthuridae), in irrigated lucerne in the Hunter dairying region of New South Wales
Australian Journal of Entomology 40 (1), 49-55
Abstract: The lucerne flea, Sminthurus viridis (L.), is shown to be a pest of irrigated lucerne in the summer-rainfall, temperate-type climate of the Hunter region in New South Wales, an area previously considered unsuitable for its establishment. Main activity occurred at average temperatures £ 13–15°C, resulting in five generations per season. Establishment and activity were closely related to irrigation. Eggs hatched throughout summer but populations failed to develop. It was unclear if diapausing eggs, the progressive hatching of non-diapausing aestivating eggs or both helped the species survive to form viable populations in winter. Early activity was detected from catches of very small nymphs (< 0.3 ± 0.14 mm) in pitfall traps, which preceded lucerne flea presence as small nymphs (< 0.82 ± 0.15 mm) on plants by approximately 2 weeks following irrigations or major rainfall. Predators and grazing by dairy cattle had no effect on lucerne flea numbers. Significant relationships were established between the lucerne flea and several plant growth and damage factors.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Alan L. Bishop

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sminthurus viridis		Australia (South+SE)