Parasitofauna of Five Freshwater Fishes in a Nigerian Freshwater Ecosystem

Ejere, Vincent Chikwendu; Aguzie, Ifeanyi Oscar; Ivoke, Njoku; Ekeh, Felicia Nkechi; Ezenwaji, Ngozi Evelyn; Onoja, US; Eyo, Joseph Effiong

doi:10.14798/72.1.682

Cited by 18 publications

(7 citation statements)

References 29 publications

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“…Indication from this result is that such parasite burden in an ecosystem may pose high risk of infection to both fish and man who might feed on the fish species which serve as secondary host of human pathogenic parasites or where fish is a transport host of zoonotic parasites. However, the studies of Ekanem et al (2011) and Ejere et al (2014) are not in agreement with our findings.…”

Section: Discussioncontrasting

confidence: 99%

“…In Nigeria, extensive study has been carried out on parasites prevalence in fish (Okoye et al, 2014;Biu et al, 2014;Ejere et al, 2014;Uruku & Adikwu, 2017;Ani et al, 2017;Abba et al, 2018) but only the study of Adeogun et al (2014) is available in the study area. Aside the fact that very minimal study exist in the study area, none is available on the parasite prevalence in wild fish.…”

Section: Introductionmentioning

confidence: 99%

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Endo and Ecto Parasite Prevalence and Abundance in Some Fish Species From Akomoje, Ogun River South-West Nigeria

Oghenochuko

Ezeri

Takeet

et al. 2020

MJS

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Parasites are the second most abundant microorganisms that infect and cause disease in wild and cultured fish after bacteria. The study investigated the parasite prevalence, abundance, mean intensity and dominance in some fresh water fish from Akomoje, Ogun River, Nigeria from February to May, 2016. Eight fish species were collected and identified to the species level. Experimental fish were measured and weighed. Endo-and ectoparasites were examined for; from Skin/scale, dorsal and caudal fins, gills, intestine and stomach of fish. Water sample was collected from shore, mid and extreme of the landing site and also analysed for parasite abundance. Prevalence of parasite in all fish species varied slightly with size. Myxozoan group revealed the highest dominance of ecto-and endo-parasites in virtually all fish species while mean intensity and abundance of Myxozoan spp. was highest in Oreochromis niloticus and Hemichromis fasciatus. Highest case of a single species of ectoand endo-parasite in a fish sample was that of Nematode larva in Chrysicthys nigrodigitatus (41.43 %) and Trichocerca sp. (Rotifera) in Mormyrus rume (52.9 %).Water analysis revealed three parasite groups that were present in the sampled fish. Conclusively, Akomoje landing site of Ogun River has a rich burden of parasites.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Endo and Ecto Parasite Prevalence and Abundance in Some Fish Species From Akomoje, Ogun River South-West Nigeria

Oghenochuko

Ezeri

Takeet

et al. 2020

MJS

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“…The total internal parasitic infection rate was 41% (including trematodes, acanthocephala, nematodes and protozoa), which is similar to that in a previous study in Nigeria, which revealed a prevalence rate of 32.9% [ 52 ], and to that in a study by Gebreegziabher et al (2020) [ 53 ] in Ethiopia, which found a rate of 38.6%. On the other hand, our findings are higher than the rate recorded in Fayom (48%) [ 45 ].…”

Section: Discussionsupporting

confidence: 87%

Prevalence and Morphological Investigation of Parasitic Infection in Freshwater Fish (Nile Tilapia) from Upper Egypt

Abd-ELrahman

Gareh

Mohamed

et al. 2023

Animals

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Fish are a source of high-quality protein with low cholesterol, but they are susceptible to parasitic infections, which have a significant impact on aquaculture, in addition to their zoonotic potential. The present study estimated parasitic infections and evaluated the diversity of zoonotic parasites in freshwater Nile tilapia (Oreochromis niloticus) in Assiut Governorate, Upper Egypt. A total of 300 samples were randomly collected from the Assiut Governorate. These fish were examined for both ectoparasites and endoparasites, followed by the experimental infection of mice with encysted metacercariae (EMC) for the retrieval of the adult worms. The overall prevalence of the variable parasites was 82% (246 of 300). Both ecto- and endoparasites were detected in 41% (123 of 300) of the examined fish. The identified ectoparasites were Gyrodactylus, Dactylogrus, Cichlidogyrus, Trichodina and Icthyophthirius multifiliis, in 5%, 4%, 22%, 6% and 4% of the fish, respectively. The endoparasites were trematodes (Orientocreadium batrachoides 3%), nematodes (Contracaecum. 2%), acanthocephala (Acanthosentis tilapiae 25%) and protozoa that included Isospora and Eimeria spp., in 1% and 8% of fish, respectively. Myxobolus was detected in 2% of the examined fish. The overall prevalence of encysted metacercariae (EMC) was 95% (285 of 300), while infection with macroscopic EMC had a prevalence of 37% and microscopic EMC had a prevalence of 58%. The adult worms recovered from the experimental infections were Prohemistomum vivax and Mesostephanus spp., which belong to the family Cyathocotylidae. Collectively, these findings reflect the relatively high occurrence of parasites among the studied fish, confirming the necessity of strict measures to control infection.

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“…The parasitological examination of B. bayad and P. annectens from Upper River Benue showed a high parasite prevalence of 58.50%, consisting of 4 parasitic group/taxa with 12 different parasite species. The high overall parasite prevalence in this work is in agreement with the observation of Yakubu et al [39] who reported high infection prevalence of 59% in their comparative study of gut helminths of Tilapia Zilli and Clarias gariepinus from River Uke, Plateau State, Nigeria but higher than the (40.85% ) recorded by Dankshaya and Zakari [40], 25.34% recorded in Edo State, Nigeria [41], 32.90% recorded in Warri River, Delta State [42], 6.90% in Okhuo River [43] and 3.30% recorded in Great Kwa River [37]. However, The high overall parasite prevalence in this work is lower than the 100% recorded for Nile Tilapia (Oreochromis niloticus) from Lake Koftu in central Ethiopia [44], 67.5% recorded in Abuja, Nigeria [45], 65.0% recorded in Ebonyi River, Enugu State, Nigeria (Onyishi and Aguzie, 2018), 61.00 and 62% recorded for O. niloticusfrom River Nile and drainage branch, respectively in Egypt [46] and 59.20% recorded for fishes in Niger River at Illushi, Edo State, Nigeria [33].…”

Section: The Prevalence Of Parasite Infection In Relation To the Sexe...supporting

confidence: 91%

Prevalence of fish Parasites IN Bagrus bayad and Protopterus annectens from Upper River Benue in Mutum Biu, Taraba State, Nigeria

Omeji¹,

Solomon²,

Ogaba³

2022

AJFAR

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The prevalence of fish parasites in Bagrus bayad and Protopterus annectens from Upper River Benue in Mutum Biu, Taraba State, Nigeria was carried out using standard parasitological method. The objectives of this study were to investigate the parasite species spectrum, prevalence of each parasites species, overall prevalence, prevalence of parasite infection in relation to the size and sexes of Bagrus bayad and Protopterus annectens and the infection induced by parasites on/in their body parts, with the view of providing relevant information that can be used in combating the rate of economic losses that could be experienced as a result of parasitic infestations. 4 parasite taxa comprising of Twelve (12) parasite species (Trichodina spp., Henneguya spp. Cryptobia iubilans, Diphillobothrium latum, Hymenolepis nanna and Bothriocephalus aengypticus, Capillaria philipinensis, Caenorhabditis briggsae, Camallanus spp., Eustrongylides spp., Contracaecum spp. and Clinostomum spp. were recovered from the samples of fish species used during the study period. Twelve (12) of the parasite species were recovered from Bagrus bayad while seven (7) were recovered from Protopterus annectens. Among the body parts of Bagrus bayad, while intestine had the highest percentage parasite load (56.37%), highest percentage parasite load (46.22%) in Protopterus annectens was recorded for stomach (46.22%). Out of the 400 fish samples comprising of 200 each of Bagrus bayad and Protopterus annectens, 234 (58.50%) comprising of 99 (49.50%) and 135 (67.50%) samples each of Bagrus bayad and Protopterus annectens were infested with 369 and 119 parasites, respectively. However, there was no significant difference in the prevalence of infection and parasite load between the fish species, respectively (P>0.05). Generally, larger sized samples of Bagrus bayad and Protopterus annectens had higher percentage of infection compared to the smaller sized of both samples although, the prevalence of infection in relation to sizes of both fish species was not statistically significant (P>0.05). Female Bagrus bayad and Protopterus annectens had higher prevalence of infection (21.61%) and (16.63%) than the males (6.37%) and (6.24%), respectively. There was no significant difference in the prevalence of infection in relation to the sexes of both fish species (P>0.05). Epidermal necrosis of the caudal fin and skin, thickened intestinal epithelium at the site of parasite attachment, hyperplasia of the intestinal villi and lamina propria, hyperplasia of infected gills at the secondary lamellae, ulceration of the stomach, abdominal distention, eroded and flattened intestinal folds and lymphocytic infiltration of intestinal mucosa and edema of the lamina propria of the intestine were observed with the infected samples of B. bayad. The infected samples of P. annectens exhibited epidermal necrosis of the skin.

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Parasitofauna of Five Freshwater Fishes in a Nigerian Freshwater Ecosystem

Cited by 18 publications

References 29 publications

Endo and Ecto Parasite Prevalence and Abundance in Some Fish Species From Akomoje, Ogun River South-West Nigeria

Endo and Ecto Parasite Prevalence and Abundance in Some Fish Species From Akomoje, Ogun River South-West Nigeria

Prevalence and Morphological Investigation of Parasitic Infection in Freshwater Fish (Nile Tilapia) from Upper Egypt

Prevalence of fish Parasites IN Bagrus bayad and Protopterus annectens from Upper River Benue in Mutum Biu, Taraba State, Nigeria

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