Aporrectodea caliginosa, a suitable earthworm species for field based genotoxicity assessment?

There is a growing interest for the application of biomakers to field-collected earthworms. Therefore we have evaluated the usability of native populations of endogeic, widely distributed earthworm Aporrectodea caliginosa in the assessment of soil genotoxicity using the Comet assay. Validation of the Comet assay on earthworm coelomocytes has been established using commercially available Eisenia fetida exposed to copper, cadmium, and pentachlorophenol, along with A. caliginosa exposed to copper in a filter paper contact test. Neutral red retention time (NRRT) assay was conducted on copper exposed and field-collected earthworms. Significant DNA and lysosomal damage was measured using Comet and NRRT assays in native populations of A. caliginosa sampled from the polluted soils in the urban area in comparison to the earthworms from the reference site. The results of this study confirm the employment of A. caliginosa as a suitable species for the in situ soil toxicity and genotoxicity field surveys.     

Chemistry of the sternal gland secretion of the Mediterranean centipede Himantarium gabrielis (Linnaeus, 1767) (Chilopoda: Geophilomorpha: Himantariidae)

The Science of Nature - The geophilomorph centipede, Himantarium gabrielis, when disturbed, discharges a viscous and proteinaceous secretion from the sternal glands. This exudate was found by gas...     

The future of disasters studies: new disasters and the case of the Horn of Africa

Past disasters have been well studied, but the challenge of using the findings to improve the management of future events remains a daunting task. This paper argues that there are new and complex disasters of which the state itself has become the main source, as reflected in the Horn of Africa. This region is characterised by increasing vulnerability owing to the alarming decline of democracy and the rise of authoritarianism. These new disasters are less researched because of the hazard of conducting fieldwork in such environments. However, there is mounting evidence to highlight the possibility of performing research in these settings, but not by employing traditional methods; rather, these tools may need to be customised for use. One key policy implication here is that donors may need to invest more money in analysing these new disasters and they may need to consider building and strengthening genuine partnerships between Northern and Southern research institutions