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Effects of Solanum nigrum L. extract and its main glycoalkaloids on selected tissues of Tenebrio molitor L. as factors increasing the toxicity of fenitrothion insecticide

Marta Spochacz

Abstract

During the research, the influence of the black nightshade (Solanum nigrum) unripe fruit extract and its main glycoalkaloids on selected physiological aspects of a yellow mealworm (Tenebrio molitor) was checked for potential usage against this pest. As a next step, the toxic concentrations of fenitrotion (LC50 and LC40) were calculated for the description of the influence of the S. nigrum extract on the toxicity of fenitrothion in two strategies of application. In the first strategy, the extract was mixed with fenitrothion in the ratio 1:1 and applied to the larvae, and in the second strategy, the extract was given 24 h before fenitrothion application. The results showed, that the S. nigrum extract causes sublethal effects such as changes in the activity of visceral muscles, changes in the concentration of stored biomolecules, and disturbances in the midgut and fat body cells in T. molitor. Glycoalkaloids present in the S. nigrum extract cause sublethal toxic effects in yellow mealworm. The differences in the effects caused by the extract and single glycoalkaloids indicate the cooperative action of both glycoalkaloids. The S. nigrum extract applied at the same time with fenitrothion did not increase the lethality of T. molitor larvae comparing to the effects caused by fenitrothion, however, it caused sublethal effects. Appropriate correlation of the S. nigrum extract application before fenitrothion caused significant increase of T. molitor mortality and strengthen the sublethal effects.
Record ID
UAM51d5fbdfb10a4d989311bb9ff8a820ca
Diploma type
Doctor of Philosophy
Author
Title in Polish
Działanie ekstraktu z Solanum nigrum L. i jego głównych glikoalkaloidów, jako czynników zwiększających toksyczność insektycydu fenitrotionu w wybranych tkankach Tenebrio molitor L
Title in English
Effects of Solanum nigrum L. extract and its main glycoalkaloids on selected tissues of Tenebrio molitor L. as factors increasing the toxicity of fenitrothion insecticide
Language
  • eng (en) English
  • pol (pl) Polish
Certifying Unit
Wydział Biologii [nowa struktura organizacyjna] (SNP/WB)
Scientific discipline (2.0)
6.4 biological sciences
Status
Finished
Year of creation
2021
Start date
2018
Defense Date
23-02-2021
Title date
23-02-2021
Supervisor
URL
https://hdl.handle.net/10593/26066 Opening in a new tab
Keywords in English
Solanum nigrum extract; glycoalkaloids; fenitrothion; Tenebrio molitor; ultrastructure
Abstract in English
During the research, the influence of the black nightshade (Solanum nigrum) unripe fruit extract and its main glycoalkaloids on selected physiological aspects of a yellow mealworm (Tenebrio molitor) was checked for potential usage against this pest. As a next step, the toxic concentrations of fenitrotion (LC50 and LC40) were calculated for the description of the influence of the S. nigrum extract on the toxicity of fenitrothion in two strategies of application. In the first strategy, the extract was mixed with fenitrothion in the ratio 1:1 and applied to the larvae, and in the second strategy, the extract was given 24 h before fenitrothion application. The results showed, that the S. nigrum extract causes sublethal effects such as changes in the activity of visceral muscles, changes in the concentration of stored biomolecules, and disturbances in the midgut and fat body cells in T. molitor. Glycoalkaloids present in the S. nigrum extract cause sublethal toxic effects in yellow mealworm. The differences in the effects caused by the extract and single glycoalkaloids indicate the cooperative action of both glycoalkaloids. The S. nigrum extract applied at the same time with fenitrothion did not increase the lethality of T. molitor larvae comparing to the effects caused by fenitrothion, however, it caused sublethal effects. Appropriate correlation of the S. nigrum extract application before fenitrothion caused significant increase of T. molitor mortality and strengthen the sublethal effects.

Uniform Resource Identifier
https://researchportal.amu.edu.pl/info/phd/UAM51d5fbdfb10a4d989311bb9ff8a820ca/
URN
urn:amu-prod:UAM51d5fbdfb10a4d989311bb9ff8a820ca

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