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Directional traps, both horizontal and vertical, were used to assess the behavioural impact of phenanthrene application on soil springtail communities. Avoidance was not detected. Rather, a vertical attraction of the dominant species, Folsomia manolachei, was demonstrated, as well as a decrease in horizontal movements of Lepidocyrtus lanuginosus, another important species mainly captured at the soil surface. Ecological consequences of the results are discussed. 相似文献
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Heavy metal removal from industrial effluents by sorption on cross-linked starch: chemical study and impact on water toxicity 总被引:1,自引:0,他引:1
Sancey B Trunfio G Charles J Minary JF Gavoille S Badot PM Crini G 《Journal of environmental management》2011,92(3):765-772
Batch sorption experiments using a starch-based sorbent were carried out for the removal of heavy metals present in industrial water discharges. The influence of contact time, mass of sorbent and pollutant load was investigated. Pollutant removal was dependent on the mass of sorbent and contact time, but independent of the contaminant load. The process was uniform, rapid and efficient. Sorption reached equilibrium in 60 min irrespective of the metal considered (e.g. Zn, Pb, Cu, Ni, Fe and Cd), reducing concentrations below those permitted by law. The material also removed residual turbidity and led to a significant decrease in the residual chemical oxygen demand (COD) present in the industrial water discharge. The germination success of lettuce (Lactuca sativa) was used as a laboratory indicator of phytotoxicity. The results show that the sorption using a starch-based sorbent as non-conventional material, is a viable alternative for treating industrial wastewaters. 相似文献
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Philippe Charron Delphine Héron Marcela Gargiulo Josué Feingold Jean-François Oury Pascale Richard Michel Komajda 《黑龙江环境通报》2004,24(9):701-703
Hypertrophic cardiomyopathy (HCM) is an autosomal dominant disease that may cause premature sudden death, especially in teenagers and young adults. The recent progress in the molecular genetics of the disease has made genetic testing sometimes available in clinical practice. We report the case of a couple who still requested prenatal molecular testing after detailed information had been given through a multidisciplinary consultation. Prenatal diagnosis in HCM is associated with complex medical and psychological implications, in addition to general ethical considerations, as the potential value of the diagnosis is counterbalanced by the highly variable expression of the disease and the difficulty in predicting its evolution. The R403L mutation in the MYH7 gene had been previously identified in this family, characterized by a malignant form of HCM. In the specific context of this case, we decided to agree to the request of the parents and performed the prenatal diagnosis. To the best of our knowledge, this is the first report of a prenatal molecular diagnosis performed in the context of HCM. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
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Jean-Fran?ois?Lema?treEmail author Steven?A.?Ramm Nicola?Jennings Paula?Stockley 《Behavioral ecology and sociobiology》2012,66(1):97-105
Since genital morphology can influence the outcome of post-copulatory sexual selection, differences in the genitalia of dominant
and subordinate males could be a factor contributing to the fertilisation advantage of dominant males under sperm competition.
Here we investigate for the first time if penile morphology differs according to male social status in a promiscuous mammal,
the bank vole (Myodes glareolus). In this species, dominant males typically achieve higher reproductive success than subordinates in post-copulatory sexual
selection, and male genital morphology is complex, including both a baculum (os penis) and penile spines. Our results show
that despite no difference in body size associated with male social status, baculum width is significantly larger in dominant
male bank voles than in subordinates. We also found evidence of positive allometry and a relatively high coefficient of phenotypic
variation in the baculum width of male bank voles, consistent with an influence of sexual selection. By contrast, baculum
length and three measures of penile spinosity did not differ according to male social status or show evidence of positive
allometry. We conclude that dominant male bank voles may benefit from an enlarged baculum under sperm competition and/or cryptic
female choice and that differences in penile morphology according to male social status might be important but as yet largely
unexplored source of variation in male reproductive success. 相似文献
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