METHYLMERCURY DICYANDIAMIDE
Mallard duck (Anas platyrhynchos)
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | increased in 2nd generation | proportion of eggs laid outside nestbox | Female | Adult | 14 pairs/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | no effect | hatchability and duckling survival versus controls | Not Reported | Juvenile | 14 pairs/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | decreased in 3rd generation | proportion of ducklings responding to approach and avoidance stimuli | Not Reported | Juvenile | 14 pairs/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | ppm, wet wt: 0.79-0.86 (egg); 0.89-1.62 (liver); 1.52-1.82 (kidney); 9.03-11.17 (primary feathers); 0.67-0.83 (breast muscle); 0.44-0.59 (brain); 0.51-0.65 (ovary) | mean concentration of Hg in tissues (ranges are for 3 generations) | Female | Adult | 3-14 birds/tissue x generation group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | no effect | body weight versus controls | Both Male and Female | Adult | 14 pairs/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | increased in 2nd generation | food consumption versus controls | Both Male and Female | Adult | 14 pairs/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | decreased in 3rd generation | eggshell thickness versus controls | Female | Adult | 14 pairs/group | Toxicity Factor Datasets | Laboratory |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | increased @ 0.5, 3 ppm | changes in approach behavior (maternal call stimulus) | Not Reported | Juvenile | 249 (control); 276 (0.5 ppm); 108 (3 ppm) | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | increased @ 0.5, 3 ppm | changes in avoidance behavior (frightening stimulus) | Not Reported | Juvenile | 319 (control); 339 (0.5 ppm); 158 (3 ppm) | Toxicity Factor Datasets | Laboratory |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | 0.51-0.54 ppm blood, 2.07-2.41 ppm kidney, 2.35-2.26 ppm liver, 0.74-0.97 ppm breast muscle, 0.47-0.51 ppm brain, 0.88 ppm eggs @ 0.5 ppm in diet | range of mean Hg (ppm wet-weight) concentrations in wild-strain males and females | Both Male and Female | Adult | 6-9 (9 breeding pairs/dose) | Toxicity Factor Datasets | Laboratory |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | decreased @ 3 ppm | mean egg weight compared to controls | Female | Adult | 10 females, 3 males/dose | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | 1 (@ 0.5 ppm), 6.46-9.19 (@ 3 ppm) ppm in eggs | mercury concentrations in eggs (at plateau) | Female | Adult | 10 females, 3 males/dose | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | decreased @ 0.5, 3 ppm | duration of egg production compared to controls | Female | Adult | 10 females, 3 males/dose | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | decreased @ 3 ppm | hatching success and 1 wk survival of hatchlings compared to controls | Not Reported | Juvenile | 10 females, 3 males/dose | Toxicity Factor Datasets | Laboratory |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | decreased @ 3 ppm | duckling survival | Not Reported | Juvenile | Not Reported | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | increased @ 3 ppm | incidence of brain lesions (demyelination, necrosis, neuronal shrinkage) | Not Reported | Juvenile | 3-11 ducklings/group | Toxicity Factor Datasets | Laboratory |
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| METHYLMERCURY DICYANDIAMIDE | see figure and table | figure and table showing decline of Hg in carcass, liver, and kidney over time | Male | Adult | 3-5 birds/group | Toxicity Factor Datasets | Laboratory | |
| METHYLMERCURY DICYANDIAMIDE | 9.10 (whole body), 4.46 (carcass), 16.5 (liver), 17.6 (kidney) ppm, wet wt | mean Hg concentrations after 2 wk exposure | Male | Adult | 3-5 birds/group | Toxicity Factor Datasets | Laboratory |
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