Effect of decreased water oxygen content on common carp fry with Dactylogyrus vastator
نویسنده
چکیده
In 5 experunents, conlmon carp fry Cyprinus carpio with Dactylogyrus vastator infection of varying severity, as well as parasite-free fry, were placed into an environment of decreasing oxygen content. The correlation between the time of death and helminth infestation of the gills was studied. The experiments demonstrated that in a medium of decreased oxygen content the carp with the heaviest helminth infection died first while helminth-free controls survived longest.
منابع مشابه
Infection with Dactylogyrus spp. among introduced cyprinid fishes and their geographical distribution in Iran
In the present study, we reported infection with eighteen species of the genus Dactylogyrus, belong to thefamily Dactylogyridae from five breeder fish species, including common carp (Cyprinus carpio), grass carp(Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix), big head carp (Hypophthalmichthysnobilis) and black carp (Myelopharyngodon piceus) which introduced and imported to ...
متن کاملEffect of different salinity level on spawning, fertilization, hatching and survival of common carp, Cyprinus carpio (Linnaeus, 1758) in semi-artificial environment
The effects of various salinity levels among (0‰, 5‰, 10‰, 15‰, and 20‰) for successful breeding of Common carp, Cyprinus carpio were investigated. The duration of study was 75 days. Ripe broodstock (30) having a mean weight (male 1027±2.4g and female 1084.8±23g) were selected and stocked into spawning tanks (2000-liter). The Ratio among male and female was 2:1. They were fed with commercial fl...
متن کاملEffect of using different types of organic animal manure on plankton abundance, growth performance and survival of Carps fry in fiberglass tanks
In this research, the effect of organic fertilizers was studied on the growth performance of carps fry. This experiment was conducted in a completely randomized design with seven treatments and three replications in 300 liters of tanks within 3 months. 60 pieces of fish fry with an average weight of 0.6 ± 0.05 g were randomly storage in each tank per 0.5: 1.5: 2: 6 (respectively, 5%, 15%, 20% a...
متن کاملDetection of single Dactylogyrus spp. in DNA extracted from infected gill tissue of fishes using Polymerase Chain Reaction
Dactylogyrus spp. are monogenean worms found mostly as ectoparasites on the gills of several fish species, including carp and goldfish. These parasites are commonly detected by microscopic analysis of the gill lamellae, but this is time-consuming and technically difficult. In contrast to this conventional method, molecular techniques provide specific, sensitive and safe detection of parasites. ...
متن کاملEffect of different amounts of Enterococcus faecium probiotic on some blood serum and skin mucus immune parameters in common carp (Cyprinus carpio) fry
The effect of different concentrations of dietary Enterococcus faecium on some immune parameters in common carp was carried out on 2019 in Ahmadabad farm. For this purpose, 600 fry with average weight 11.0 ± 0.5 g were reared in 12 plastic tanks (50 fish per tank) for 56 days and had been fed by 4 different concentration of E. faecium including [0 (control), 1×107 CFU/g (T1), 1×108 CFU/g (T2), ...
متن کامل