Rasouli S.,Islamic Azad University at Urmia |
Nekuifard A.,Artemia Research Center |
Azadikhah D.,Islamic Azad University at Urmia |
Ahari H.,Islamic Azad University at Tehran |
And 3 more authors.
Iranian Journal of Fisheries Sciences | Year: 2012
Various parasite species were found in Carassius carassius including Diplostomum spathaceum, Dactylogyrus sp.,Gyrodactylus sp. Ichthyophthirius multifiliis and Trichodinia sp. They were found in four rivers in West Azerbaijan Province (North-Western Iran). A total of 207 live Carassius carassius from four rivers including Aras (72); Zariyneh (42); Nazlo (58) and Barandoz (35) were studied. Parasitological surveys were carried out on gills and external organs. The results showed that Diplostomum spathaceum (70.83%); Dactylogyrus sp. (38.88%); Gyrodactylus sp.)22.22%); Ichthyophthirius multifiliis (48.61%); Trichodinia sp. (8.33%); Chilodonella sp. (12.50%) and Argulus sp. (76.19%) were found in fish from Aras Rive so that the result showed, Spathaceum (63.79%); Dactylogyrus sp. (36.20%); Gyrodactylus sp. (25.86%); Ichthyophthirius multifiliis (44.82%); Trichodinia sp. (18.96%); Chilodonella sp. (12.06%) and Argulus sp. (6.89%). Argulus prevalence was greater in Barandoz River while Chilodonella in Zariyneh rud River. In Barandoz River, Diplostomum spathaceum (65.71%); Dactylogyrus sp. (37.14%); Gyrodactylus sp. (22.85%); Ichthyophthirius multifiliis (31.42%); Trichodinia sp. (25.71%); Chilodonella sp. (8.57%) and Argulus sp. (5.71%) were reported, respectively. Finally, in Zariyneh rud river, the followings have been reported: Diplostomum spathaceum (76.19%); Dactylogyrus sp. (21.42%); Gyrodactylus sp. (14.28%); Ichthyophthirius multifiliis (52.38%); Trichodinia sp. (23.80%); Chilodonella sp. (14.28%) and Argulus sp. (7.14%). It should be noted that prevalence , intensity and host parasite relationship will be discussed in details in this article.
Mohsenpour Azary A.,Artemia Research Center |
Mohsenpour Azary A.,Azerbaijan University |
Ahmadi R.,Artemia Research Center |
Ahmadi R.,Azerbaijan University |
And 4 more authors.
Iranian Journal of Fisheries Sciences | Year: 2010
The abundance and species composition of ciliates were analyzed in the Bukan Dam Reservoir (West Azerbaijan, Iran) from January to December 2008. Surface water samples were collected at monthly intervals from the middle (Stations 1 and 3) and shallow (Stations 2 and 4) areas of the lake. Three samples were taken in the water column using a 5-litre sampler. Totally 30 liters water was collected, 200 ml of which was fixed immediately with 8.6 ml of a saturated HgCl 2 solution and stained with 0.04% bromophenol blue. Three subsamples were counted in a 5-ml chamber and examined with a microscope (100 x) as well as Chlorophyll a and a few ecological parameters such as dissolved oxygen, pH, transperancy and water temperature were measured. Totally 50 ciliates species were found in Bukan Dam Reservoir. Regarding the density, a high-density period was detected from January to April with a mean density of 2.86 × 10 33 cells.l -1 Ciliata at stations 1 and 3 and 4.16 × 10 3 cells.l -1 at stations 2 and 4. The high density of ciliate in summer may be due to the increase in the density of bacteria and moderate metazooplankton as a result of the appearance of non-edible algae. The ciliata occurring at the highest densities were Coleps tessellates, Didinium nasutum, Paradileptus elephantinus, Stentor polymorphus, Zosterograptus labiatus, Paramecium bursaria, Cyclidium citrullus, Vorticella campanula, Halteria grandinella and Aspidisca costata. The maximum and minimum chlorophyll a values observed at the reservoir water were 10.39 μg.l -1 and 1.0 μg.l -1 being obtained in May and Octobor respectively.
Fard A.N.,Artemia Research Center |
Gelder S.R.,University of Maine at Presque Isle
Acta Zoologica Bulgarica | Year: 2011
Narrow-clawed crayfish, Astacus leptodactylus ESCHSCHOLTZ, 1823, collected from Aras Reservoir, provided the first record of Branchiobdella kozarovi SUBCHEV, 1978, in Iran. A review of the distribution of B. kozarovi in the Euro-Mediterranean subregion (BÂNÂRESCU 1990) is described and places the new information in context. As A. leptodactylus is an important commercial crayfish, its potential for introducing B. kozarovi into new areas in the subregion is considered.