background: occurrence of resistance against antibioticsand inadequate efficacy of some vaccines necessitates studies ofnatural immunostimulators in aquaculture. shrimps shell derivedfrom chitosan can be used as immune stimulators in fish.objectives: in this study, the effects of oral administration ofchitosan, derived from shrimp shell, on some immune responsesand disease resistance in cyprinu...

background: to solve the problems caused by using synthetic pesticides in agricultural fields and aquaculture ponds studies are being carried out on the feasibility of using biopesticides or plant extracts, which are less toxic. extensive research is being carried out by researchers globally to manufacture pesticides using plant extracts. the present study evaluated the effect of datura metel p...

in this survey, 54 specimens of common carp (cyprinus carpio) were collected from anzali wetland between august 2011 and july 2012. after recording biometric characteristics, routine necropsy and parasitology methods were used. totaly, 3165 individuals of parasites were isolated and identified from common carp. parasitofauna consisted of 10 species as follows: two protozoans, ichthyophthirius m...

Koi herpesvirus (KHV), a highly contagious and lethal virus that affects both koi (Cyprinus carpio koi) and common carp (Cyprinus carpio), was isolated in 1998 from two outbreaks of koi suffering mass mortality in New York State, USA, and in Israel. The disease had been described as early as 1996 in Europe. In July 2004, this virus was found associated with a mass mortality event in wild common...

In the present study, some heavy metals (Cd, Cr, Cu, Fe, Ni and Pb) were seasonally determined in water, sediment and some tissues of Cyprinus carpio from Avsar Dam Lake, which is an important water source for irrigation and drinking in Turkey. Heavy metal levels in water, sediment and fish samples were analyzed by inductively coupled plasma spectroscopy (ICP/AES). The obtained results showed t...

The objective of the present study was to investigate trace metal levels of different varieties of fresh water fish using Inductively Coupled Plasma Mass Spectrophotometer after microwave digestion (MD-ICPMS). Fish samples were collected from the outlets of twin cities of Hyderabad and Secunderabad. The trace metal content in different varieties of analyzed fish were ranged from 0.24 to 1.68 mg...

Infections of common carp Cyprinus carpio and koi, its coloured morphotypes, with the cyprinid herpesvirus 3 (CyHV-3) can induce severe clinical signs and increased mortality in affected stocks. This may significantly challenge the economic basis of carp farming in Central Europe. To limit virus spread in carp farms, effective disinfection measures for ponds stocked with infected populations ar...

The present study was conducted to determine the bacterial contamination and prevalence of foodborne pathogens in imported frozen fish. A total of 450 imported fish samples [65 catfish (Pangasius pangasius), 45 mirgal (Cirrhinus mrigala), 135 tilapia (Oreochromis niloticus), 50 carfoo (Cyprinus carpio), 75 Rohu (Labeo rohita), 35 milk fish (Chanos chanos) and 45 Mackerel (Rastrelliger brachysom...