NDLI: Life Table Parameters, Thermal-Requirements and Development Rate of Stethorus gilvifrons (Mulsant) Reared on Two-Spotted Spider Mite Tetranychus urticae (Koch)

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Life Table Parameters, Thermal-Requirements and Development Rate of Stethorus gilvifrons (Mulsant) Reared on Two-Spotted Spider Mite Tetranychus urticae (Koch)

Content Provider	Semantic Scholar
Author	Saleh, Fatma M.
Copyright Year	2018
Abstract	Laboratory experiments were carried out in plant Protection Research Institute during 2016. The effect of temperatures under three different constant temperature (15, 25 and 35 C) and rate of developmental time immature stages, growth index, developemantal rate, longevity, fecundity, and life table parameters of Stethorus gilvifrons (Mulsant), when reared on Tetranychus urticae (Koch) were studied. The relationship among developmental rate of each stage and tested temperatures was also investigated. There were significant ranges in total of developmental time immature stages of the predator (male and female) among the three tested temperatures when the predator was reared on T. urticae as preye. Mean while, developmental rate of S. gilvifrons male were higher at 35C than 15 and 25C when reared on this tetranychid mite. Adult male longevity was high significant shorter at 35 than 15 and 25C. There were significant differences in pre-oviposition period at the three temperatures. In addition, there were significant ranges among pre-oviposition, oviposition, post ovi-position and total longevity when the predator was reared at the three constant temperatures. Fecundity rate was significantly higher at 35C than at 15C and 25C when fed on the T.urticae prey. Mean generation time (T) and the doubling time (DT) were higher at 15C than at 25C and 35C when fed on the T.urticae individuals. The value of the gross reproductive rate (GRR), net reproduction rate (Ro), intrinsic rate of increase (rm) and the finite rate of increase (λ) were higher at 35 C than at 15C and 25C.
Starting Page	23
Ending Page	29
Page Count	7
File Format	PDF HTM / HTML
DOI	10.21608/jppp.2018.35824
Volume Number	9
Alternate Webpage(s)	http://jppp.journals.ekb.eg/article_35824_4e09faaf53af27aa70c7aaf2a3eec721.pdf
Alternate Webpage(s)	https://doi.org/10.21608/jppp.2018.35824
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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