Pomphorhynchus laevis is a common fish parasite in Europe which   has been reported from Acipenser stellatus, Barbus capito, Barbus lacerta, Barbus mursa and Onchorhynchus mykiss in Iran. In a survey on the aquaculture potential of Gamasiab River in Hamedan Province, endemic fish parasites were investigated in summer and autumn 2008. After recording biometric characteristics, common necropsy an...

pomphorhynchus laevis is a common fish parasite in europe which   has been reported from acipenser stellatus, barbus capito, barbus lacerta, barbus mursa and onchorhynchus mykiss in iran. in a survey on the aquaculture potential of gamasiab river in hamedan province, endemic fish parasites were investigated in summer and autumn 2008. after recording biometric characteristics, common necropsy an...

The African clawed frog, Xenopus laevis, is a versatile model for biomedical research and largely similar to mammals in terms of organ development, anatomy, physiology, hormonal signaling mechanisms. Steroid hormones control variety processes their levels are regulated by hydroxysteroid dehydrogenases (HSDs). subfamily 20β-HSD type 2 enzymes currently comprises eight members from teleost fish m...

The effect of dormancy in zooplankton populations is still unknown, largely because of the lack of methods to estimate hatching and production of the dormant stages. This study aimed to compare the production and hatching rates of ephippia of Daphnia laevis between thermal stratification and mixing periods in Jacaré Lake (Middle Rio Doce, Minas Gerais, Brazil). For this, we collected ephippia o...