Effects of dimethoate on spiders from metal pollution gradient

Babczyńska, Agnieszka; Wilczek, Grażyna; Migula, P.

doi:10.1016/j.scitotenv.2006.06.024

Cited by 33 publications

(27 citation statements)

References 16 publications

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“…The process of binding the OP pesticide also deactivates the CarE (Wheelock et al, 2005), which explains the observed reduction in CarE activity of the dimethoate exposed spiders. A similar reduction in CarE activity in spiders after dimethoate exposure has been reported previously (Babczynska et al, 2006). The significant, reduction in AChE activity after fenvalerate exposure is consistent with reductions observed in other invertebrate and vertebrate groups exposed to pyrethroids (Szegletes et al, 1995;Ibrahim et al, 1998), although increased AChE activity has also been observed (Badiou et al, 2008).…”

Section: Figuresupporting

confidence: 89%

“…The effects of pesticides observed on spiders are not limited to their impact on abundance but also include sublethal effects such as a reduction in prey capture ability, body mass and reproductive rate (Deng et al, 2007;Desneux et al, 2007), and changes at the cellular level such as the inhibition of acetylcholinesterase (AChE) or carboxylesterase (CarE) (Pedersen et al, 2002;Babczynska et al, 2006). AChE is an enzyme found at the junction of nerve cells.…”

Section: Introductionmentioning

confidence: 99%

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Dimethoate, fenvalerate and their mixture affects Hylyphantes graminicola (Araneae: Linyphiidae) adults and their unexposed offspring

Peng

Shao

Hose

et al. 2010

Agri and Forest Entomology

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1 Mixtures of organophosphorus and pyrethroid insecticides are widely used to combat resistance in agricultural pests, although few studies have been conducted on the effects of pesticide mixtures on beneficial nontarget organisms. 2 In the present study, we exposed adult females (F 0 ) of Hylyphantes graminicola (Araneae: Linyphiidae) to fenvalerate, dimethoate and their commercially available 1 : 1 mixture (by mass). We investigated the acute toxicity of these pesticides to the exposed adults, as well as sublethal effects on reproduction and acetylcholinesterase and carboxylesterase activity. We also studied the effects of parental exposure on the size, development and enzyme activity of unexposed offspring. 3 All three formulations were acutely toxic to H. graminicola, with synergism between dimethoate and fenvalerate leading to greater toxicity in the 1 : 1 mixture than for the two insecticides alone. The sublethal effects of direct pesticide exposure were a reduction in acetylcholinesterase and carboxylesterase activity and a reduction in the number of egg sacs produced by exposed spiders relative to the control spiders. The unexposed offspring of the fenvalerate and mixture exposed spiders were smaller and took longer to mature than the control spiders. Offspring of all exposed spiders also had significantly reduced carboxylesterase activity relative to control spiders. 4 We concluded that the effects of parental exposure on the offspring were likely to increase their susceptibility to future pesticide exposures, and reduce the capacity of this spider to serve as a pest control agent.

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Section: Figuresupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Dimethoate, fenvalerate and their mixture affects Hylyphantes graminicola (Araneae: Linyphiidae) adults and their unexposed offspring

Peng

Shao

Hose

et al. 2010

Agri and Forest Entomology

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“…The case is the same with the GST levels in Leuciscus alburnoides [34] and selenium and copper doses in polluted areas. Furthermore, Agelena labyrinthica [35] and F. polyctena [21] from the polluted areas also exhibited improved GST activities in comparison with that in the reference sites.…”

Section: Discussionmentioning

confidence: 88%

“…On the other hand, GST is more stable and sensitive than CarE though they both have low specificity. Therefore, more energy might be transferred to elevate the GST levels and MT contents in order to defend rapidly and stably the toxic response caused by nickel [35] . And CarE activity in the midgut of the 6th instar larvae was reduced due to the limited energy conserves, though CarE levels in the 5th instar larvae were improved after high levels of nickel exposure.…”

Section: Discussionmentioning

confidence: 99%

Effects of dietary nickel on detoxification enzyme activities in the midgut of Spodoptera litura Fabricius larvae

et al. 2008

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“…In spiders, the observed effects of pesticides also involve changes at the cellular level, including the inhibition of carboxylesterase (CarE) and acetylcholinesterase (AChE) (Babczynska et al 2006;Peng et al 2010). The activities of CarE, AChE and MFO are widely used as biomarkers of pesticide exposure in a range of biota (Hyne and Maher 2003;Peng et al 2010).…”

mentioning

confidence: 99%

Imidacloprid Affects Pardosa Pseudoannulata Adults and Their Unexposed Offspring

Chen

You

et al. 2012

Bull Environ Contam Toxicol

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Imidacloprid is a nicotine-based, systemic, widely used insecticide. In order to investigate the effects of imidacloprid on the spider Pardosa pseudoannulata (Araneae: Lycosidae), specimens were exposed to different concentrations of imidacloprid (12.5, 25, 50, 100, 200 mg/L) by the dipping method. Surviving spiders were used to determine the fecundity, development time of unexposed offspring, predation, and the activities of detoxification enzymes. Significant reductions were observed in survival rate and fecundity of spiders exposed to imidacloprid. The development times of unexposed offspring (F(1)) were prolonged significantly with increased concentrations of imidacloprid. Spiders exposed to concentrations of imidacloprid above 25 mg/L showed significantly weaker predation on Drosophila melanogaster than the control group, but a low dose of imidacloprid (12.5 mg/L) increased predation ability. The activities of carboxyl esterase, acetyl cholinesterase, and the mixed-function oxidase were significantly inhibited by imidacloprid. With increasing concentrations of imidacloprid, the activities of all three kinds of enzymes were decreased significantly. These results suggest that imidacloprid can stimulate the performance of spiders (in low concentration) and has chronic toxicity to the spiders.

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Effects of dimethoate on spiders from metal pollution gradient

Cited by 33 publications

References 16 publications

Dimethoate, fenvalerate and their mixture affects Hylyphantes graminicola (Araneae: Linyphiidae) adults and their unexposed offspring

Dimethoate, fenvalerate and their mixture affects Hylyphantes graminicola (Araneae: Linyphiidae) adults and their unexposed offspring

Effects of dietary nickel on detoxification enzyme activities in the midgut of Spodoptera litura Fabricius larvae

Imidacloprid Affects Pardosa Pseudoannulata Adults and Their Unexposed Offspring

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