Metacercariae of new trematode species of the genus Diplostomum (Trematoda, Diplostomidae) from fishes of Lake Tana, Ethiopia

Zhokhov, A. E.

doi:10.1134/s1995082914010167

Cited by 5 publications

(10 citation statements)

References 7 publications

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“…Morphologically, the metacercariae of Diplostomum sp. strongly resemble the metacercariae of Diplostomum longicollis Zhokhov (2014) reported by Zhokhov (2014) from Enteromius humilis (Boulenger, 1902) and Garra dembecha Getahun and Stiassny, 2007 in Ethiopia in the presence of pseudosuckers of the sunken type. However, morphometric data comparisons of the fixed metacercariae revealed that the specimens in our study exhibit shorter body [379–615 (497) vs 612–1,008 (748)], smaller oral sucker [36–55 × 48–54 (48 × 50) vs 66–72 × 66–72 (63 × 65)], shorter prepharynx (42–92 vs 72–180), lower low limits for pharynx length (42–65 vs 60–66) and ventral sucker length (66–87 vs 72–96), and smaller holdfast organ [104–123 × 141–196 (115 × 165) vs 132–180 × 150–252 (158 × 183)].…”

Section: Resultsmentioning

confidence: 54%

“…14 Diplostomum sp. 16 Diplostomum garrae Zhokhov (2014) Diplostomum montanum Zhokhov (2014) Diplostomum tilapiae Zhokhov (2014)Host Anguilla bengalensis labiata, Oreochromis mossambicus , Synodontis zambezensis Pseudocrenilabrus philander Garra dembecha Enteromius humilis , Garra dembecha , Labeobarbus gorgorensis , Varicorhinus beso Oreochromis niloticus CountrySouth AfricaSouth AfricaEthiopiaEthiopiaEthiopiaSourcePresent studyPresent studyZhokhov (2014)Zhokhov (2014)Zhokhov (2014)RangeMeanRangeMeanRangeMeanRangeMeanRangeMeanBL237–372302284–434356306–414380432–621552531–828653BW206–271240212–306254252–306283240–372289198–234212FL216–346274293–414346––––––FW206–271237231–277250–…”

Section: Resultsmentioning

confidence: 99%

“…14 are morphologically most similar to the metacercariae of D . montanum Zhokhov (2014) from the eye lenses of E . humilis, G .…”

Section: Resultsmentioning

confidence: 99%

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Resolution of the identity of three species of Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, combining molecular and morphological evidence

Hoogendoorn

Smit

Kudlai

2020

International Journal for Parasitology: Parasites and Wildlife

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Reliable data on the diversity of the genus Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, as well as in Africa, is almost non-existent. Most of the morphology-based identifications of species within this genus reported from Africa require critical revision. The aim of the present study was to determine the diversity of Diplostomum metacercariae in South African fishes applying molecular and traditional morphological techniques. To achieve this aim, a total of 216 fishes belonging to 21 species collected in the Rivers Phongolo, Riet, Usuthu and Mooi in three provinces of South Africa were examined. Metacercariae of Diplostomum were recovered from the eye lenses of 38 fishes belonging to five species of the families Anguillidae, Cichilidae and Mochokidae, with an overall low prevalence of infection (18%). Metacercariae were subjected to morphological study and molecular sequencing of the partial mithochondrial cox1 and ribosomal 28S rDNA genes as well as of ribosomal ITS1-5.8S-ITS2 region. Morphological and phylogenetic analyses revealed the presence of three species which matched those previously reported from Nigeria, Iraq and China, therefore those from Tilapia sparrmanii and Synodontis zambezensis were named Diplostomum sp.; those from Anguilla labiata, Oreochromis mossambicus and S. zambezensis were named Diplostomum sp. 14; and those from Pseudocrenilabrus philander were named Diplostomum sp. 16. Geographic distribution of several species of Diplostomum appeared to be wider than expected. Morphological description and novel sequence data generated during this study will contribute to the elucidation of the life cycles of Diplostomum sp., Diplostomum sp. 14 and Diplostomum sp. 16 and advance further research of diplostomids in Africa.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

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Resolution of the identity of three species of Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, combining molecular and morphological evidence

Hoogendoorn

Smit

Kudlai

2020

International Journal for Parasitology: Parasites and Wildlife

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“…For instance, when the genus Clarias was reviewed by [39], African Diplostomum species with similar features may follow a similar fate. This idea was supported by Zhokhov et al [40] and Zhokhov [38] of Congo (DRC) [36] and T.…”

Section: Taxonomy Of Diplostomum (Sensu Dubois 1970) Species In Africamentioning

confidence: 82%

“…xenopi [21]. Nevertheless, more than 15 Diplostomum species have been reported as metacercaria in different fi sh hosts species [29,37,38]. Although some authors tried to name the metacercarial stages to species level, for example D. garrae, D. longicollum, D. montanum and D. tilapiae described by Zhokhov [38], have further exacerbated the taxonomic problem.…”

Section: Taxonomy Of Diplostomum (Sensu Dubois 1970) Species In Africamentioning

confidence: 99%

African Diplostomum (sensu Dubois 1961): Minireview on taxonomy and biology

Chibwana¹

2018

Int J Aquac Fish Sci

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Freshwater fi sheries has a signifi cant contribution to development as an important source of human proteins as well as in sport fi shing and aquarium. Despite their importance, both wild and aquaculture fi sh suffer from a problem of parasitism, notably Diplostomum species, causing fi sh mortalities particularly in fi ngerlings. Although a considerable effort in understanding Diplostomum species taxonomy, biology and control of fi sh parasites has been well developed in the northern hemisphere, the knowledge of these aspects in Africa is not clearly known. Therefore the present work reviews the aspects of biology and taxonomy of African Diplostomum. The traditional approach to uncover these aspects would be to complete the life cycles in the laboratory, which would lead to morphological characterisation of all life cycle stages. However, establishing and maintaining life cycles of Diplostomum species is diffi cult, laborious and expensive. Although, molecular methods have been proven to provide an alternative solution, are not common in Africa due to lack of equipment and expertise. However, improvement of some weaknesses for some studies like providing pictures or diagrams of the Diplostomum species found is recommended. In addition, for laboratories that have the capacity to do molecular analysis, the use of a familiar molecular marker like a barcode region could be a prospective development in future.

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Molecular and morphological characterisation of four diplostomid metacercariae infecting Tilapia sparrmanii (Perciformes: Cichlidae) in the North West Province, South Africa

2019

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Metacercariae of new trematode species of the genus Diplostomum (Trematoda, Diplostomidae) from fishes of Lake Tana, Ethiopia

Cited by 5 publications

References 7 publications

Resolution of the identity of three species of Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, combining molecular and morphological evidence

Resolution of the identity of three species of Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, combining molecular and morphological evidence

African Diplostomum (sensu Dubois 1961): Minireview on taxonomy and biology

Molecular and morphological characterisation of four diplostomid metacercariae infecting Tilapia sparrmanii (Perciformes: Cichlidae) in the North West Province, South Africa

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