oligochaeta worms are important organisms in aquatic ecosystem. their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem. the members of the family tubificidae and in particular, genus limnodrilus are considered as the most tolerant oligochaets to aquatic pollution. therefore identification and biological characteristics of this taxon are of great h...

During a survey of aquatic fungi from Anzali Lagoon in Iran, several fungal specimens were isolated freshwater habitats. Morphological evidence and comparing sequencing based on rDNA (ITS LSU) protein-coding genes (TEF1 TUB2) showed that some isolates belong to undescribed species. These Arthrobotrys Sarocladium, two ascomycetes genera. hyrcanus, sp. nov., differs closely related species such a...

The aim of this study was to detect the occurrence of parasites in Prussian carp, Carassius gibelio as the most important alien fish in Anzali international wetland. This undesirable fish was introduced accidentally to Iran with Chinese carp fries which imported to the country during the last decades and then acceded to Anzali wetland. Today this fish has significant stocks in Anzali wetland bu...

length weight relationships of vimba vimba persa were studied. for this purpose 174 fish samples were collected by gill nets, beach seine and purse seine from march through june 2008 at two guilan fisheries catch stations of guilan located in anzali- kiyashahr regions. samples were immediately transferred to the laboratory of fish biology at university of guilan for further analyses. length, we...

This study examines the distribution of water resources in Protected Areas Iran and their priority for conservation. The results show that most are located north northwest due to favorable climatic conditions, topography, ambient temperature, annual rainfall levels. Conversely, lowest amount center southeast country. Water were prioritized based on expert ratings indicators determine value wetl...