ISSN:
1095-8649
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
The effects were studied of a 24 h exposure to a subacute concentration of parathion (0.33 p.p.m., which is approximately equivalent to 0.5 of the 48-h LC50) on the locomotor orientation of mature goldfish Carassius auratus L., 26–30 cm long, in response to a food odour and a water flow differential, singly and in combination, in a free choice situation. Prior to exposure, food odour alone was significantly attractive but the combination ‘food odour with increased water flow’, as compared with the control situation, was avoided. Factorial analysis demonstrated interaction between odour and increased flow. After exposure to parathion the food odour ceased to be attractive and was significantly avoided. This avoidance was not present in the ‘food odour-increased flow’ combination. The parathion exposure did not affect the response to the flow conditions per se but reversed the interaction between food odour and increased flow. In addition, the exposure to the pesticide itself, in a second order interaction, interacted with ‘food odour-flow’ response. Hence, the short term exposure to the subacute organophosphate concentration affected not only the perception of food odour and flow individually, but also the interaction between these common environmental stimuli.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1095-8649.1975.tb04624.x
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