Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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A comparative study of ectoparasites occurrence between grass carp and silver carp in guilan province culture ponds, Iran

  • Asgharnia, Mehrdad (Iranian Fisheries Science Research Institute, Inland waters Aquaculture Research Center, Agricultural Research Education and Extension Organization (AREEO)) ;
  • Ghasemi, Mohaddes (Iranian Fisheries Science Research Institute, Inland waters Aquaculture Research Center, Agricultural Research Education and Extension Organization (AREEO))
  • Received : 2021.08.15
  • Accepted : 2021.11.03
  • Published : 2021.12.31
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Abstract

Parasitic infection is among the most common problems for carp cultivation. They are also important for the principal entrance of other hazardous infections as well. This study was carried out for determining of parasitic fauna of two major carp known as silver and grass carp with the comparison of prevalence value and intensity rate of parasites among them, alongside the relationship between the biometric characteristics and host sex with the infection level. For this purpose, a total of 94 fish samples were caught randomly using a fishing net, from Guilan ponds during spring and summer of the year 2018 and transported alive to the laboratory. Upon arriving, the biometric characteristics and genus of each carp were measured individually. Specimens were then acquired from the skin, gills, and eyes of the carp and examined according to standard parasitology methods. Recovered parasites were observed under a light microscope and then fixed for identification. As the result, the occurrence and intensity in the higher length group were comparatively greater than the lower one. Also, the prevalence and intensity of total parasites in male carp were higher than in females. In this research, Dactylogyrus hypophthalmichthys and Dactylogyrus aristhichtys were observed in silver carp and Dactylogyrus lamellatus was detected in grass carp. In the paper below, we found that the host specificity varies in different species of Dactylogyrus isolated from grass carp and silver carp.

Keywords

Acknowledgement

The authors of this manuscript wish to express their appreciation for kindness cooperation and financially support throughout the study by both the Iranian National Fisheries Research Sciences Institute and Inland Waters Aquaculture Research Center of Guilan.

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