Parasite Communities of Oreochromis niloticus baringoensis (Trewavas, 1983) in Relation to Selected Water Quality Parameters in the Springs of Lorwai Swamp and Lake Baringo, Kenya

Adamba, Stephanie Wangare Kamau; Otachi, Elick O.; Ong'ondo, Geoffrey Odhiambo

doi:10.2478/s11686-020-00178-2

Cited by 10 publications

(6 citation statements)

References 60 publications

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“…The parasite diversity in fishes were from 11 different genera, similar to the 11 parasites previously reported in O. niloticus from Kenya; that study reported nine parasites at the genus level and two at the species level [ 22 ]. The parasitic diversity calculated by the Simpson index showed a value lower than the 0.88 reported in the Turkana fishing environments in Kenya for Tilapia zillii [ 23 ].…”

Section: Discussionsupporting

confidence: 73%

“…in the offspring of O. niliticus . [ 22 ]. This correlation may be due to these compounds degrading water quality and predisposing fish to parasitic infections [ 22 , 34 ].…”

Section: Discussionmentioning

confidence: 99%

“…[ 22 ]. This correlation may be due to these compounds degrading water quality and predisposing fish to parasitic infections [ 22 , 34 ]. Although in this study the monogenean Dactylogyrus spp.…”

Section: Discussionmentioning

confidence: 99%

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Physicochemical Water Quality Influence on the Parasite Biodiversity in Juvenile Tilapia (Oreochromis spp.) Farmed at Valle Del Mezquital in the Central-Eastern Socioeconomic Region of Mexico

Acosta-Pérez¹,

Vega-Sánchez²,

Fernández-Martínez³

et al. 2022

Pathogens

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Aquaculture parasite biodiversity dependents on multiple environmental characteristics, including water quality. The analysis of this relationship aims to support improvements in the production management of tilapia. For this purpose, a total of 100 juvenile fishes (Oreochromis spp.) and 30 water samples were collected at Valle del Mezquital in the Central-Eastern socioeconomical region of Mexico. A study of parasite biodiversity was carried out and water quality parameters were determined. Biodiversity in the habitat was measured using the Simpson diversity index, which considers the number of species present and the abundance of each one; we also calculate the Berger-Parker index to estimate the proportional importance of the most abundant species. In general, it was found that 86% of the examined specimens were parasitized. Parasite biodiversity was 11 genera (Simpson index = 0.55). Trichodina spp. (Ciliophora) was the dominant genus (Berger-Parker index = 0.51). The protozoa Apiosoma spp. was associated with the water hardness (Berger-Parker index = 0.57). Furthermore, the presence of monogeneans showed a positive correlation with the levels of nitrites and ammonium in the water (Berger-Parker index = 0.06–0.55). This characterization may represent a useful tool in the comprehensive management of parasites that affect the farmed tilapia. However, new data is necessary to expand the knowledge about the environment-host-parasite relationship.

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Section: Discussionsupporting

confidence: 73%

“…in the offspring of O. niliticus . [ 22 ]. This correlation may be due to these compounds degrading water quality and predisposing fish to parasitic infections [ 22 , 34 ].…”

Section: Discussionmentioning

confidence: 99%

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Physicochemical Water Quality Influence on the Parasite Biodiversity in Juvenile Tilapia (Oreochromis spp.) Farmed at Valle Del Mezquital in the Central-Eastern Socioeconomic Region of Mexico

Acosta-Pérez¹,

Vega-Sánchez²,

Fernández-Martínez³

et al. 2022

Pathogens

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“…also had a positive relationship with increase in organic load in water while parasites like Clinostomum spp. showed positive correlation with nitrogenous compounds [25,26] . A study conducted in Kirinyaga County showed that the prevalence of Clinostomum cutaneum was positively correlated with water temperature and pH [11] .…”

Section: Discussionmentioning

confidence: 99%

Management practices and risk factors associated with parasitic infestations in farmed Nile tilapia in Bomet and Kericho counties, Kenya

Ageng’o,

Waruiru,

Nyaga

et al. 2024

Int. J. Fish. Aquat. Stud.

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The aquaculture has surged in Kenya owing to dwindling wild stocks. However, this is coupled with challenges such as limited fish health knowledge and biosecurity measures. A cross sectional study was undertaken to determine risk factors and management practices associated with parasitic infestation of farmed Nile tilapia in Bomet and Kericho counties, Kenya. A total of 150 Nile tilapia (Oreochromis niloticus) were collected and subjected to standard parasitological examination. Potential risk factors associated with parasitic infestation in fish were assessed in 88 farms using pretested semi-structured questionnaires and on-site farm visit observations. Logistic regression analysis with the estimation of odds ratios (OR) was used to assess potential risks factors. Tilapia were dominant fish (>95%) and were farmed mainly in earthen ponds (> 61%). Most farmers (52.3%) used river water for ponds and 14% had experienced floods that introduced predators in the ponds. Farmers relied on fisheries department harvesting nets and only 12.5% sun dried the nets after use. Few farmers (37.5%) frequently cleaned and dried ponds before restocking, while 34.1% did not remove the pond bottom soil after fish harvesting. Approximately 3.4% of the farmers rated diseases as the main obstacle in fish farming and, 68.2% could not identify sick fish. Those who identified sick fish reported abnormal swimming (23.9%) and mortality (8%). Out of the 150 fish sampled, 62 (prevalence = 42%) were found to be infected with different genera of parasites including: Dactylogyrus spp. (21%); Epistylis spp. (7.3%); Riboscyphidia spp. (6.7%); Trichodina spp. (6%); Paracamallanus spp. (4.7%); Camallanus spp. (2%); Diplostomum spp. (2%) and Contracaecum spp. (1.3%). Dactylogyrus spp. were common in earthen ponds (91%) (p<0.001). Some management practices identified as possible risk factors for parasitic infestation in fish included; pond fertilization using livestock manure (OR=5.633), siting fish ponds in valleys/gullies (OR=2.028), use of river water for aqua farming (OR=1.654) and earthen pond types (OR=2.023). Farmers and extension workers should be trained on the importance of fish health and biosecurity. The authors recommend further detailed longitudinal controlled studies which consider myriad fish husbandry practices with parasitic infestations.

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“…A related study on parasite communities and related water quality parameters in Lorwai swamp and Lake Baringo, Kenya also reported a positive correlation between nutrients and the abundance of Clinostomum spp. in fish (Adamba et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Occurrence and prevalence of fish parasites and the interaction with water quality parameters in selected small water bodies in western Kenya

Mziri¹,

Outa²

2022

Preprint

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Water quality and the environment greatly influence the existence and proliferation of parasites in the water and consequently, fish. This can have profound implications on aquaculture within the water bodies. Few studies have been conducted on parasite aggregations about the water quality in small water bodies in Kenya. This study assessed the suitability of selected Small Water Bodies (SWBs) for aquaculture as regards fish parasites by assessing the relationship between the occurrence and prevalence of parasites to water quality, water depth, land use, and shoreline habitat type. Standard protocols and procedures were used in the collection, analysis of water quality, and assessment of fish specimens for parasitology. White spot disease, (a parasite with economic significance) was in 4 of the 6 SWBs studied and had varying prevalence rates ranging between 10% to 20%. Clinostomum, a zoonotic parasite was also recorded in one of the SWBs sampled in this study. Additionally, the study realised some significant differences in the water quality from the various selected SWBs (p˂0.05), which could be a pointer to the noted diversities in the parasite communities. The findings of this study indicated that there was a strong positive correlation (r2 > 0.8) between some parasites (Ichthyopthirius multifiliis, Clinostomum spp., Procamallanus, and Camallanus) and some water quality parameters (temperature, turbidity, Soluble Reactive Phosphorous, Total Phosphorous, and Silicates). In light of the increase in focus on fisheries and aquaculture as key drivers of the blue economy and food and nutrition security, and as the country explores new frontiers for investment in aquaculture in SWBs, the water quality and consequent habitat features such as depth and land use, need to be addressed before investment.

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Parasite Communities of Oreochromis niloticus baringoensis (Trewavas, 1983) in Relation to Selected Water Quality Parameters in the Springs of Lorwai Swamp and Lake Baringo, Kenya

Cited by 10 publications

References 60 publications

Physicochemical Water Quality Influence on the Parasite Biodiversity in Juvenile Tilapia (Oreochromis spp.) Farmed at Valle Del Mezquital in the Central-Eastern Socioeconomic Region of Mexico

Physicochemical Water Quality Influence on the Parasite Biodiversity in Juvenile Tilapia (Oreochromis spp.) Farmed at Valle Del Mezquital in the Central-Eastern Socioeconomic Region of Mexico

Management practices and risk factors associated with parasitic infestations in farmed Nile tilapia in Bomet and Kericho counties, Kenya

Occurrence and prevalence of fish parasites and the interaction with water quality parameters in selected small water bodies in western Kenya

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