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Mallard reproductive testing in a pond environment: a preliminary study
A 2-year preliminary study was conducted on mallard ducks (Anas platyrhynchos ), to determine the feasibility of using outdoor pond enclosures for reproductive studies and to evaluate the effects of the insecticide chlorpyrifos on mallard reproduction. No significant reproductive effects were observ...
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Published in: | Archives of environmental contamination and toxicology 1986-11, Vol.15 (6), p.757-761 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A 2-year preliminary study was conducted on mallard ducks (Anas platyrhynchos ), to determine the feasibility of using outdoor pond enclosures for reproductive studies and to evaluate the effects of the insecticide chlorpyrifos on mallard reproduction. No significant reproductive effects were observed for mallards receiving 8 ppm (mg/kg of feed) chlorpyrifos in their diet. Birds receiving 80 ppm chlorpyrifos hatched significantly fewer ducklings per successful nest (5.8) than controls (10.2). None of the ducklings on treatment ponds survived to 7 days. Control birds produced 8.4 ducklings per succsessful nest surviving to 7 days or longer. Birds in the 80 ppm treatment group consumed less feed than did controls. Weight loss from reduced feed consumption did not occur to the extent expected, indicating that birds supplemented their diets with natural foods found in an around the ponds. |
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ISSN: | 0090-4341 1432-0703 |
DOI: | 10.1007/BF01054923 |