| evaluation of environmental impact on natural populations of the mediterranean killifish aphanius fasciatus by quantitative rna biomarkers. | the mediterranean killifish, aphanius fasciatus (valenciennes, 1821) represents an excellent sentinel species for analysis of environmental impact in coastal areas. quantitative changes on liver mrna levels of five stress-related genes--metallothionein (metal exposure), vitellogenin, (estrogenic effects), cytochrome p4501a (cyp1a, dioxin-like compounds), superoxide dismutase (oxidative stress) and hsp70 (general stress)--were tested as markers of exposure to pollutants both in natural population ... | 2010 | 20638715 |
| heavy metal levels in gonad and liver tissues-effects on the reproductive parameters of natural populations of aphanius facsiatus. | the impact of heavy metal levels (cd, cu, and zn) on the reproductive parameters in natural populations of the mediterranean killifish aphanius fasciatus was monitored in four sites of the tunisian coast. our study covered a period of the reproductive cycle, from april to november 2009. the significantly higher levels of cd, cu, and zn in the liver and gonads for both sexes (p<0.05) were observed in the most polluted site (sfax coast). during the reproductive cycle of a. fasciatus, an unbalanced ... | 2013 | 23645000 |
| possible chemical causes of skeletal deformities in natural populations of aphanius fasciatus collected from the tunisian coast. | this study attempt to quantify and identify skeletal deformities in natural populations of aphanius fasciatus collected from the tunisian coast and tends to found a possible relationship between these anomalies and several types of pollutants presents in the environment. fish were collected from one reference area (s1: coast of luza) and three polluted areas (s2: industrialized coast of sfax, s3: coast of khniss and s4: hamdoun'oued). various patterns of skeletal deformities were diagnosed using ... | 2013 | 23260252 |
| structural and molecular analysis of pollution-linked deformities in a natural aphanius fasciatus (valenciennes, 1821) population from the tunisian coast. | the eastern coast of tunisia hosts a mosaic of populations of the mediterranean killifish a. fasciatus, an excellent monitoring species for the analysis of environmental impact in coastal mediterranean areas. among these populations, fish from the sfax area, in the gulf of gabès, are known for presenting a high prevalence of different physiological alterations, including spinal deformation. compared to a reference clean area, luza, sfax water and sediments are polluted with heavy metals (20 to 4 ... | 2012 | 22777571 |