ISSN:
1570-7458
Keywords:
Macrolophus caliginosus
;
mirid bug
;
life table
;
longevity
;
fecundity
;
development time
;
mortality
;
sex ratio
;
oviposition period
;
intrinsic rate of increase
;
spider mite
;
Tetranychus urticae
;
tomato
;
biological control
;
glasshouse pests
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The life table characteristics of the polyphagous mirid Macrolophus caliginosus Wagner (Heteroptera: Miridae) preying on various stages of Tetranychus urticae Koch (Acari: Tetranychidae) with tomato as host plant were described at 22 °C. The following average parameters were obtained: Female longevity: 28.7 days; fecundity: 0.7 eggs/female/day; egg mortality: 2.6%; pre-oviposition period: 5.5 days; oviposition period: 18.1 days; post-oviposition period: 3.2 days; juvenile development time: 26.8 days; juvenile mortality: 34.9%; and sex ratio (♀/(♀+♂): 0.46. Life table parameters were estimated as net reproduction rate (R 0): 6.15; intrinsic rate of increase (r m): 0.031 day−1; finite rate of increase (λ): 1.032; mean generation time (T c): 58.17 days; and doubling time (T 2) 22.2 days. The parameters obtained were in accordance with those reported for M. caliginosus fed on another mite species (T. turkestani Ugarov & Nikolski (Acari: Tetranychidae)). However, compared to the performance of M. caliginosus fed on common glasshouse insect pests, a diet consisting of only mites appeared to be inferior. However, being a voracious predator, M. caliginosus may be a valuable addition to existing methods of mite control.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003948313507
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