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. 2022 Apr;29(4):2921-2925.
doi: 10.1016/j.sjbs.2022.01.022. Epub 2022 Jan 15.

Parasitic anomalies observed in snow trout due to anthropogenic stress in water bodies

Nighat Un Nissa  1 , Masarat Jan  2 , Javeed Ahmad Tantray  3 , Nazir Ahmad Dar  4 , Arizo Jan  5 , Fayaz Ahmad  1 , Bilal Ahamad Paray  6 , Aneela Gulnaz  7
Affiliations

Parasitic anomalies observed in snow trout due to anthropogenic stress in water bodies

Nighat Un Nissa et al. Saudi J Biol Sci. 2022 Apr.

Abstract

There is interrelationship of the environmental conditions and fish health. Decrease or increase of pollution in aquatic ecosystem have direct impact on presence or absence of parasites. Fish living under optimum environmental, well-nourished conditions are more resistant to diseases than fish weakened by malnutrition caused by parasite infestation or due to deterioration of environmental conditions because ofpollution. Fish encounters common parasites in wild and in culture systems. Parasites attach to the host through suckers and hooks and make their way inside the host through different means, which include skin, through mouth along with food, by means of gills. The hosts were collected during Jan 2019 to Jan 2020 from river Veshaw. During this study it was observed that presence of parasites causes some changes in fish which can serve as indicators of deterioration in aquatic habitat. Clinical signs were noticed in fish hosts collected from sites which received waste due to anthropogenic activities. Parasitic anomalies in the host collected from polluted site was observed to include body deformaties, gastric distention, lesions in gut, increased mucus production, damage in gill filaments etc.

Keywords: Anthropogenic activities; Clinical signs; Deformities; Fish; Infected; Parasites.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
(A) Metacercaria of Clinostomum sp. (B) White nodules on skin of fish. (C) Leeches attached to fish skin (D) Fish showing excess mucus on skin.
Fig. 2
Fig. 2
Diplozoon sp. Infestation on gill filaments.
Fig. 3
Fig. 3
(A) Gut blockage and rupturing of gut wall due to heavy infestation of Adenoscolex oreini (B) Unusual site of infestation by Adenoscolex oreini in gills. (C) Occurance of Bothriocephalus achelognathi in other visceral organs as heavy infestation caused rupturing of gut wall and discolouration in internal organs.
Fig. 4
Fig. 4
(A) Unusual site of infestation on gills by Pomphorhynchus sp. causing disruption of gill filaments. (B) Acanthocephala inserting their proboscis inside gut lining causing perforations in gut wall.
See this image and copyright information in PMC

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