Publication Type: | Journal Article |
Year of Publication: | 1995 |
Authors: | Hartley, RR, Newton, I, Robertson, M |
Journal: | Ostrich |
Volume: | 66 |
Issue: | 2-3 |
Date Published: | 1995 |
ISBN Number: | 0030-6525 |
Keywords: | Falco, Falco peregrinus, Falconidae, Rhynchodon peregrinus, Zimbabwe |
Abstract: | Summary Hartley, R.R., Newton, I., geometric mean 1.8 ppm) was found in all eggs (n = 15) from 13 sites, including two pars in captivity. Eggs from two sites in the mid-Zambezi Valley, the most recently and heavily sprayed areas (5?8 times for tsetse fly Glossina sp. control), had the highest levels, one beyond that regarded as critical for successful reproduction. Mean shell thickness (Ratcliffe index) of the 1990 eggs was 10% (range = 2?29%) lower than the presumed pre-DDT mean. HEOD was detected in two eggs, HCB in one egg, and PCBs in all eggs, but at levels too low to affect breeding performance. Young were fledged from each of 12 sampled sites, yielding 1.86 young per site.Summary Hartley, R.R., Newton, I., geometric mean 1.8 ppm) was found in all eggs (n = 15) from 13 sites, including two pars in captivity. Eggs from two sites in the mid-Zambezi Valley, the most recently and heavily sprayed areas (5?8 times for tsetse fly Glossina sp. control), had the highest levels, one beyond that regarded as critical for successful reproduction. Mean shell thickness (Ratcliffe index) of the 1990 eggs was 10% (range = 2?29%) lower than the presumed pre-DDT mean. HEOD was detected in two eggs, HCB in one egg, and PCBs in all eggs, but at levels too low to affect breeding performance. Young were fledged from each of 12 sampled sites, yielding 1.86 young per site. |
URL: | http://www.tandfonline.com/doi/abs/10.1080/00306525.1995.9633762 |
Short Title: | Ostrich |
Taxonomic name: