Problem statement: Heavy metals constitute one of the most hazardous substances that could be accumulated in biota. Fish populations exploited by man often live in coastal area environments that contain high levels of heavy metals, coming from human activities such as industrial and agricultural wastes. A problem to deal when using fishes as biomonitors of heavy metals is the relationship exist...

A new species of Glyphocrangon has been collected during deep-water sampling off western Mexico, in the east Pacific. The series of specimens, including both males and females, was found between 780 and 1879 m depth. Glyphocrangon sp. nov. is close to G. sicaria Faxon, 1893 and G. vicaria Faxon, 1896, both occurring in the east Pacific. It differs from both species, however, by the absence of t...

Khoshsokhan, M., Kazempour Osaloo, S., Saadatmand, S. & Attar, F. 2010 06 30: Molecular phylogeny of Rochelia (Boraginaceae) based on nrDNA ITS and cpDNA trnL-F sequences. -Iran. J. Bot. 16 (1): 22-29. Tehran. We here present molecular phylogeny of the genus Rochelia (Boraginaceae-Eritrichieae). A total of 8 species of Rochelia and 2 species of Lappula as outgroups were included in analyses usi...

The subgenus Semiclivina Kult, 1947 of Clivina Latreille, 1802 (sensu lato) has been re-ranked as a genus, with the most readily observed feature being the stridulation organ of the proepisterna and front femora. A group of species within Semiclivina is characterized by a peculiar acute tubercle at the posterior margin of the eye, which corresponds to an equally noticeable incision of the anter...

Cousinia papillosa (Asteraceae) from eastern Iran is described and illustrated as a new species. Differences between the new species and its closest relative, C. meshhedensis, are discussed. A map showing the distribution of the two species is given. The scanning electron micrography of the pollen grains shows obvious differences between the two species especially in the sculpturing of exine. T...