The study aimed to investigate the maturation process of ovarian follicles and ovary structure of migratory form of female Bulatmai barbel (Lucioarbus capito). The histology of oogenesis coincided with that known from most teleosts. The ovarian structure was found to be cytovarian. The development of the oocytes is started from early May along with spawning and the degeneration of matured oocyt...

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 Species distributional data were derived from extensive review published and unpublished sources evaluated for their consistency, adequacy reliability.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...

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...

• A river connectivity index was modified to assess fish population fragmentation. dam may deeply impact a species but not the network and vice versa. Dam varies with dispersal capability distance between populations. The can be used prioritise mitigation for single or habitats. Rivers are very vulnerable fragmentation caused by presence of man-made barriers. To restore basin connectivity, nume...

In current paper reproductive strategy and growth rates of Luciobarbus esocinus were investigated from 2010 to 2012, in Gamasiab River, Kermanshah, Iran. Samples were collected seasonally by gillnet and electro-fisher device. Sex ratio was evaluated from 162 individual and the percentage of male and female individuals were 54.76% and 45.24% respectively. Age structure was distributed between I ...