Predatory behaviors of Neoseiulus californicus and Galendromus helveolus (Acari: Phytoseiidae) attacking Oligonychus perseae (Acari: Tetranychidae)

Predatory behaviors of Neosieulus californicus (McGregor) and Galendromus helveolus (Chant) attacking Oligonychus perseae Tuttle, Baker and Abbatiello on avocado leaves were videotaped and analyzed. Behaviors were recorded for "fresh" predators that were used < or = 48 hr post receipt f...

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Bibliographic Details
Published in:Experimental & applied acarology 2002, Vol.26 (1-2), p.13-26
Main Authors: TAKANO-LEE, M, HODDLE, Mark
Format: Article
Language:English
Subjects:
Acari
Animal ethology
Animals
Biological and medical sciences
Biological control
Cold
Cold storage
Cold Temperature
Control
Fundamental and applied biological sciences. Psychology
Low temperature
Mites - physiology
Neoseiulus californicus
Nests
Oligonychus perseae
Phytopathology. Animal pests. Plant and forest protection
Predators
Predatory Behavior
Prey
Protozoa. Invertebrata
Protozoa. Invertebrates
Psychology. Psychoanalysis. Psychiatry
Tetranychidae
Webbing
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Summary:Predatory behaviors of Neosieulus californicus (McGregor) and Galendromus helveolus (Chant) attacking Oligonychus perseae Tuttle, Baker and Abbatiello on avocado leaves were videotaped and analyzed. Behaviors were recorded for "fresh" predators that were used < or = 48 hr post receipt from a commercial insectary and "cold stored" predators that were maintained at 12 degrees C for approximately 14 days. Fresh and cold stored G. helveolus were observed to attack O. perseae only after invading webbed nests. Conversely. fresh and cold stored N. californicus employed three different modes of predatory attack: (1) intercepting and attacking migrant O. perseae outside of web nests: (2) attacking prey through nest webbing; or (3) invading and attacking O. perseae inside nests. Predatory efficacy of both N. californicus and G. helveolus was reduced following cold storage. as both species engaged in certain predatory behaviors less frequently in comparison to predators that were not stored at low temperatures. Our observed results for N. californicus and G. helveolus attacking O. perseae are interpreted in relation to the chaetotaxy hypothesis, which proposes that phytoseiid invasion efficiency and propensity of webbed nests is facilitated by dorsal setal lengths.
ISSN:0168-8162
1572-9702
DOI:10.1023/a:1020949531639