Concentrations of 11 metals (cadmium, zinc, copper (Cu), vanadium (V), lead, magnesium (Mg), manganese, aluminum, iron (Fe), chromium (Cr), and nickel), one metalloid (arsenic (As)) were measured in sediment, common reed (Phragmites australis), algae (Spirogyra sp.), blood worm (Chironomus sp.) tissues samples collected from the Shoor river. Samples dried, acid digested, concentrations using inductively coupled plasma-optical emission spectrometer. A higher concentration heavy was...

: Diazinon (Organophosphorus insecticide) can cause reactive oxidative stresses during metabolism of aquatic organisms. The study presented here aimed to investigate the antioxidant effect vitamin C on enzyme activities and lipid peroxidation in rainbow trout exposed subchronic dosage diazinon. A total number 360 Oncorhynchus mykiss were allocated into four treatment groups (with three replicates): control; diazinon (0.1 mg L 1); (300 kg 1 diet) plus L-1), (1000 kg-1 L-1). After two weeks,...

Siberian sturgeon (Acipenser baerii Brandt, 1869) is a suitable species for aquacultural purposes. This study was conducted to investigate the influence of stocking density on blood parameters cultured immature introduced Iranian aquaculture systems, in order monitor crowding stress. Two-year old juvenile fish (weight 607.7±21.49 g, total length: 68±9.46 cm [mean ± SE]) were reared at low, moderate and high densities (6, 12 18 250 L-1, respectively) 5 months. Cortisol, glucose cholesterol...

Abstract The relative importance of parental and larval diets on development larvae the sea urchin Pseudechinus huttoni was examined. Laval parameters measured included size body components, rate, morphological phenotypic plasticity, mortality protein, lipid, carbohydrate energy contents. We also investigated influence nutrition fecundity, egg diameter eggs' lipid content. For a period one year, adult P. were fed kelp (Macrocystis pyrifera) ad libitum every second day as low-quality diet, or...

The study on histological characteristics of the digestive system Beluga (Huso huso) was conducted from hatching until 50 days posthatching at 16.5 °C. Development in this species followed general pattern described for other Acipenserids, although there were differences timing organ development among species. At hatching, mouth opened and represented by a gastric cavity filled with yolk lined endodermal cells, partially differentiated hindgut. Gastric glands started to differentiate 46.5...

DNA breakage has been frequently used as a biomarker of the pesticide toxicity. The present study introduced method to quantify in Oncorhynchus mykiss exposed malathion. Specimens were different concentrations malathion for 1-9 days and their gill liver sampled. was extracted electrophoresed using agarose gel. pixel density curves obtained from gel smears. area under arbitrarily divided three up seven segments Java macro software ImageJ. Some weighted averaging methods calculate each lane....

Abstract This study aimed to understand how resource allocation somatic and gonadal tissues of the sea urchin Pseudechinus huttoni was influenced by nutritional status using several methods. Urchins in laboratory were fed kelp (Macrocystis pyrifera) four days a week as low-quality diet group, or mixture cockle flesh (Austrovenus stutchburyi) once week, high-quality group. The experiment lasted for one year. gonad, gut, lantern, test, lantern muscle indices gametogenic stage measured at 3...

Morphology and feature selection are key approaches to address several issues in fisheries science stock management, such as the hypothesis of admixture Caspian common carp (Cyprinus carpio) farmed stocks Iran. The present study was performed investigate population classification southern basin using data mining algorithms find most important characteristic(s) differing between Iranian carp. A total 74 individuals were collected from three locations within one farm November 2015 April 2016....

Metapopulation characterization and discrimination of the pearl oyster Pinctada imbricata radiata in northern part Persian Gulf is unknown. This study was conducted to examine differences shell morphology P. from Hendourabi Lavan islands using principal component analysis (PCA) elliptic Fourier (EFA). Both EFA PCA differentiated form 2 populations significantly. indicated that oysters tended be longer, while those were wider greater thickness (width). Based on EFA, specimens Island more...

The relative importance of parental diet/population and larval diet were examined on egg, growth, morphology biochemistry Sclerasterias mollis larvae. Adult S. fed one cockle ( Austrovenus stutchburyi ) per two animals each week, as a low diet, or cockles animal high diet. experiment was run for year. In addition, field populations (Otago inshore offshore) with dissimilar nutritional status (based the gonad index) selected. Otago starfish had higher indices assumed to have better status....

The pearl oyster, Pinctada radiata , shows great variation in shell morphology throughout its distribution. This can be related to phenotypic plasticity, genetic variability or a combination of both. Using geometric morphometric and microsatellite DNA analyses, two morphologically distinct populations the oyster were studied northern Persian Gulf, i.e. from Lavan Hendourabi Islands. Ten landmarks selected define shape left shell. In addition, concentration Zn, Mg, Fe, Cu, Pb, Cd, Mn Cr soft...

Capoeta damascina has a large distribution in the Middle East and is one of most abundant fishes inland waters Iran. Histopathological symptoms blood, gill, liver kidney C. were investigated over 1, 5 9-day exposure to 0 (control), 0.5, 1 1.5 mg L−1 diazinon. The data analysed using analysis variance non-parametric multivariate variance. Diazinon concentration was more important than time on changes tissues. decreased red blood cell (RBC), white (WBC), haematocrit (Hct) haemoglobin (Hb)....

In this study, the length-weight relationships (LWRs) and condition factors were estimated for 445 specimens belonging to three gobiid species viz. Ponticola bathybius (Kessler, 1877), Neogobius caspius (Eichwald, 1831) pallasi (Berg, 1916) from Southern Caspian Sea basin. Total length total weight of examined ranged 4.9-28.3 cm 0.64-263.4 g, respectively. The parameter b studied found between 2.47 (N. caspius) 3.45 pallasi) with r2 ranging 0.831 0.988. LWR K parameters are reported first...