Nanotechnologies are being applied to many fields of science and engineering and represent a broad spectrum of methods, some of which have been known for a long time. However, the public interest as well as the promotion of this topic by funding agencies has led in some cases to a simple renaming of known fields by attaching the ‘nano-’ prefix, without initiating a true innovation. One field th...

This study provides an annotated checklist of the freshwater fish species recorded in lentic ecosystems Greece. Species distributional data were derived from extensive review published and unpublished sources evaluated for their consistency, adequacy reliability. Overall, 650 (149 natural 501 artificial) investigated which, 480 fishless or unavailable. In remaining 170 ecosystems, 122 taxa (bel...

Over a decade after the last major review of the Cambridge Greensand pterosaurs, their systematics remains one of the most disputed points in pterosaur taxonomy. Ornithocheiridae is still a wastebasket for fragmentary taxa, and some nomenclatural issues are still a problem. Here, the species from the Cretaceous of England that, at some point, were referred in Ornithocheirus, are reviewed. Inves...

Many animals exhibit changes in patterns of movement and habitat use as they age, and understanding such ontogenetic shifts is important for ensuring that habitat management is appropriate for all life stages. We used radiotelemetry to study movements and habitat use of juvenile and adult gopher frogs (Rana capito) as they migrated from the same ponds following metamorphosis or breeding. To sup...

The basal media M199 or MEM was utilized in the classical method of vitro culture of glochidia where 1-5% CO2 was required to maintain stable physiological pH for completion of non-parasitic metamorphosis. The classical method encounters a great challenge to those glochidia which undergo development of visceral tissue but significantly increase in size during metamorphosis. The improved in vitr...

abstract gatan has distributed in the main rivers in khoozestan province and there are few researches on propagation and reproductive system of this species. therefore, this study has focused on using of activating solutions on sperm activity and fertilization capability in gatan fish in comparison with grass carp. in this research, 5 activating solutions together with workshop water and distil...