+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Trends and effects of organochlorine compounds in sparrowhawk accipiter nisus eggs

, : Trends and effects of organochlorine compounds in sparrowhawk accipiter nisus eggs. Journal of Applied Ecology 23(2): 461-478

(1) Sparrowhawk eggs for analysis of organochlorine (DDE, HEOD and PCB) levels were obtained from seventeen areas in Britain during 1971-80, together with details of breeding success. In different areas, mean eggshell index (reflecting shell thickness) was reduced by 11-20% on the pre-1947 national mean. (2) A negative relationship between eggshell index and log DDE level was found, confirming previous studies. In this relationship no significant variation in slopes between areas was detected, but highly significant differences between intercepts. By implication, shell index varied between areas, irrespective of DDE levels. (3) Significant relationships were also found between shell index and HEOD or PCB levels, but once the effect of DDE was allowed for in a multiple regression, neither HEOD or PCB made a significant contribution. The levels of all three compounds were correlated wtih one another, and with shell index. (4) In the area from which most eggs were obtained (Annandale), the relationship of shell index to DDE showed no temporal trend during the years 1971-80. In order words, no evidence was found for the development of biochemical resistance to DDE. (5) During the years 1971-80, the levels of HEOD in eggs declined, whereas levels of DDE and PCB declined to the mid-70s, and then increased. These trends were apparent in the pooled data for all areas, and in some areas individually, though there were also differences in trends between certain areas. (6) The number of young produced at individual nests decreased with decline in shell index, and with increase in HEOD and PCB contents. However, when the relationship between brood size and shell index was allowed for in a multiple regression, neither HEOD nor PCB made a significant contribution. (7) No difference in the relationship between brood size and shell index was found between areas. However, adjusting the brood size in all areas to a common shell index revealed significant variations in brood size between areas and between years. (8) Production of young was reduced by an estimated 14-35% in different areas, associated with reduction in shell indices.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006839282

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Mas Mayoral M.; Gonzalez Crespo J.; Nieto Villaseca J., 1991: Casar cheese production physicochemical and microbiological characteristics. Milk production of four Merino (entrefino) sheep flocks from Casar area (Caceres [Spain]), has been studied. Cheese yield of cheesemaking and composition of milks and wheys (dry matter, fat and protein content) was also studied. Physicochemical an...

Kinoshita, Kzo, 1958: Studies on the effects of nitrogenous manures upon the growth and the yield of opium poppy. Using the soil of Wakayama medical plant experimental station, the effects of nitrogenous manures upon the growth and the yield of opium poppy (Papaver somniferum L.) were investigated in 1957. Ten plots, namely, no manure, no N, ammonium sulphate...

Delorme, Michael A.; Xu, Ling, 1997: Activation of protein C on an immobilized thrombomodulin surface under flow conditions. Blood 90(10 SUPPL 1 PART 2): 74B-75B, Nov 15

Kim, Byong Kak; Hyun, Jin Won; Yoon, Jong Myung; Choi, Eung Chil, 1997: Immunological studies on the antitumor components of the basidiocarps of Agrocybe cylindracea. The effects of cylindan, a polysaccharide isolated from the basidiocarps of Agrocybe cylindracea, on murine sarcoma 180 tumor and murine immune cells were examined after intraperitoneal administration. Cylindan exhibited a marked life extension ef...

Kukral J.C.; Abtahi H.; Gillesby W.J., 1968: Perforated peptic ulcer analysis and follow up of 186 cases abstract surgical therapy. Proceedings of the Institute of Medicine of Chicago 27(3): 57

Chew, T., 1983: Sodium values of Chinese condiments and their use in sodium-restricted diets. Common seasonings and sauces were bought in the Chinese districts of San Francisco and Oakland, California, USA. For 29 samples, 1 to 3 samples of different varieties of 14 condiments, a table gives the sodium content as range and mean in mg/100 g...

Marchand, G. R., 1978: Interstitial pressure during volume expansion at reduced renal artery pressure. To study the effect of oncotic pressure on the relationship between interstitial pressure and Na excretion in the absence of increased peritubular capillary hydrostatic pressure, renal artery pressure was reduced immediately before the start of vo...

Szederkenyi T.; Pal Molnar E.; Bertalan A.; Kobor B., 2000: The mineral composition of lake mud in several hypersaline lakes of the Danube-Tisza Interfluve, South Hungary. The radioactivity of young sediments of some lakes on the Danube-Tisza Interfluve is remarkably high compared to their environment. We have performed X-ray diffractional and bulk chemistry analyses on two typical examples to determine their minera...

Keen, Nt, 1982: Mechanisms conferring specific recognition in gene-for-gene plant-parasite systems. NATO advanced study institutes series Series A Life sciences7(37): 67-84

Small, Kirsten A.; Chan, Fung Yee, 1998: Antenatal screening and prenatal diagnosis of thalassaemia An update. Medical Journal of Australia 169(4): 215-219, Aug 17