AI Article Synopsis
- The study evaluated the impact of starvation and the insecticide dimethoate on DNA damage in male and female wolf spiders (Xerolycosa nemoralis).
- The comet assay indicated that male spiders showed higher DNA damage in both haemocytes and midgut cells compared to females, with the most significant damage occurring after single exposure to dimethoate.
- While females tolerated starvation without DNA damage, prolonged food deprivation in males resulted in severe damage to their haemocytes, hinting at a decline in their defense mechanisms.
Article Abstract
The aim of this study was to assess the genotoxic effects of starvation and dimethoate (organophosphate insecticide) in female and male wolf spiders Xerolycosa nemoralis (Lycosidae) exposed to the stressors under laboratory conditions. DNA damage was measured in haemocytes and midgut gland cells using the comet assay. In response to the two stressing factors, both cell types showed %TDNA, tail length (TL) and OTM values higher in males than in females. Level of DNA damage in haemocytes was greater than in midgut gland cells. In both sexes, the strongest genotoxicity was recorded at single application of dimethoate. After five-time exposure to the pesticide, genotoxic effects of a single dose were sustained in males and reduced to the control level in females. Starvation stress was well tolerated by the females, in which neither cell type was affected by DNA damage. However, in male haemocytes food deprivation induced severe DNA damage, what suggests suppression of the defence potential at prolonged starvation periods.
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| http://dx.doi.org/10.1016/j.envpol.2016.02.037 | DOI Listing |
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