[ prevalence of orientodiploproctodaeum diacanthi in protonibea diacanthus of persian gulf]

A brief description of Orientdiploproctodaeum diacanthi and determining its prevalence in Protonibea diacanthus of Persian Gulf. Random Sampling. Thirty one Protonibea diacanthus. Different sizes of spotted croakers were collected in stations of Hendijan, Bahregan and the mouth of Bahmanshir in Persian Gulf. The fishes were transferred to the laboratory, their digestive tract opened and carefully examined for the various types of eaten food. Mean while, some fluks were detected based on the routine staining procedures. The flukes were counted in each fish and some of them sectioned. The collected flukes were diagnosed as Orientodiploproctodaeum diacanthi. 7 out of 31 Protonibea diacanthus were deceted as O.diacanthias. This is the first report of the presence of O. diacanthi in P.diacanthus of Persian Gulf. Infection of such fishes in the Persian Gulf and also some fresh-water fishes by this parasites is possible

[Identification of Monogeneans and their population density impact on Barbus grypus and B. sharpeyi in Karoon River in Ahwaz]

Objectives: identification of Monogeneans and determination of their population density effect an Barbus grypus and B. sharpeyi in the Karoon River in Ahwaz

Design: observational study

Procedure: fish were caught by net, and were identified on the basis of their morphological characteristics and formulas of their scales and teeth. The body surface and mainly branchiae of the fish were searched for Monogeneans. The live or dead Monogeneans were then fixed by amonium picrate. Identification of the Monogeneans was based on the shape and arrangement of hooks and anchors in opisthohaptor and the male reproductive organs

Statistical analysis: analysis of variance [Anova], mean and standard deviation and standard error

Results: identification of Dactylogyncspavlovskyi, D. barbioides, Dogielius persicus,Gyrodactylus sprostonae and Paradiplozoon sp. in Barbus gtypus and D. pavlovskyi , D. barbioides, D. persicus, D. anchoratus and D.carassobarbi in Barbus sharpeyi

Conclusions: it is the first report of the presence of Gyrodactylus sprostonae and Paradiplozoon sp. on B. gtypus in Iran. This survey revealed that the host specificity among these Monogeneans are decreased. Also, the impaction of these parasites population density on both fishes were not significant