New Species of Myxobolus (Myxosporea: Myxobolidae) Parasites of Fresh Water Fishes in Cameroon (Central Africa)

Fomena, Abraham; Folefack, Guy Benoît Lekeufack; ., C. Tang Ii

doi:10.3923/jbs.2007.1171.1178

Cited by 8 publications

(2 citation statements)

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“…Morphological features place the present myxosporean under the genus Myxobolus. Among the species of Myxobolus possessing spores with rounded anterior and slightly narrow posterior ends, two equal polar capsules and without sutural ornamentation, the present species exhibit close similarities with M. discrepans infecting Ictiobus bubalis (Rice et al 1943), M. stomum infecting Plectorhincus gaterinus (Ali et al 2003), M. cycloides and M. mulleri infecting Leuciscus cephalus (Molnár et al 2006), M. pethericii infecting Ctenopoma petherici (Fomena et al 2007), M. agolus and M. clarii infecting Oreochromis niloticus (Mohammed et al 2012) and M. nigerae infecting Schizothorax niger (Dar et al 2016). A comparison of the above eight species with the present myxosporean (Table 1)…”

Section: Remarksmentioning

confidence: 67%

Morphological and Molecular Description of a New Species of Myxobolus (Myxosporea: Myxobolidae) Infecting Planiliza Macrolepis (Smith, 1846) From India

Correya

Vijayagopal

N.K.

2021

Preprint

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The present paper describes a novel species of Myxobolus parasitizing the gill filaments of the largescale mullet, Planiliza macrolepis from Cochin backwaters, Kerala, India. The parasite develops in the gill filaments; plasmodia elongated, milky white, measured 1.37 – 2.18 (1.78 ± 0.35) mm x 0.07-0.12 (0.10 ± 0.02) mm in size. Mature myxospores ovoid in valvular view, biconvex in sutural view with smooth shell valves and measured 6.24 - 7.02 (6.63 ± 0.23) × 5.01 - 6.18 (5.68 ± 0.25) μm in size. Polar capsules equal, oval with pointed anterior ends, 3.07 – 3.58 (3.33 ± 0.12) × 1.68 – 2.42 (2.09 ± 0.18) μm in size. Polar filaments with 4 coils, measured 29.61 ± 4.75 μm in length when extruded. Sporoplasm binucleate with a rudimentary nucleus and a vacuole. A comparison with related Myxobolus species revealed significant morphological & morphometric differences. In BLASTN and genetic distance analysis, the present parasite showed high divergence with other myxosporean sequences, indicating its molecular uniqueness. In Maximum Likelihood and Bayesian Interference analysis, the present species stands out with M. ramadus as sister branch within the Myxobolus clade. In infected gill filaments, the plasmodia caused swelling/deformation, compression of lamellae and reduction in respiratory surface area. Three of 222 P. macrolepis screened were infected, indicating a prevalence of 1.3%. Considering the morphological, morphometric, molecular and phylogenetic differences with the previously described species of myxosporeans, along with the dissimilarities in host and geographical locations, the present parasite is treated as a new species and the name Myxobolus cochinensis n. sp. is proposed.

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Section: Remarksmentioning

confidence: 67%

Morphological and Molecular Description of a New Species of Myxobolus (Myxosporea: Myxobolidae) Infecting Planiliza Macrolepis (Smith, 1846) From India

Correya

Vijayagopal

N.K.

2021

Preprint

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“…In addition, this could be attributed to the low prevalence and intensity observed in the area of study. However, the pathogenic effect is rarely caused by a single specie of parasite (Fomena et al, 1996). Indeed, the migration of parasites can cause tissue lesions in fish, which constitutes entry points for secondary pathogens (fungi, bacteria and viruses) that can lead to massive mortality, especially in young fish (Thié ry and al., 2003).…”

Section: Discussionmentioning

confidence: 99%

Internal parasitic helminth infecting reared fishes from the West Region of Cameroon: Epidemiological profile and effects on fish health

FabriceNgueguim,

KenmogneKouam,

Fonkwa

et al. 2023

ERSR

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Intensification of the fish farming sector in Cameroon can result to reduction of profitability and public health concerns due to emergence of parasites amongst which zoonotic ones. Unfortunately, limited and outdated data are available on internal parasites of reared fish as well as their impact on the infected fish. A total of 2254 live fish samples of males and females were randomly obtained made up of Clarias gariepinus (692), Cyprinus carpio (593) and Oreochromis niloticus (969). The skin, the gastrointestinal tract of the fish was examined for the presence of parasite, using standard procedures. An overall prevalence of 8.47% coupled with a very low intensity was assessed. This study revealed a diverse parasitic fauna made up of Acanthocephala sp. (4.84%), Cappilaria sp. (1.91%), Eustrongylides sp. (1.06%), Camallanus sp. (1.2%) and Orientatractis sp. (0.34%). Meanwhile, intensities mean values were higher in Cappilaria sp. followed by Eustrongyloides sp., Camallanus sp. and finally Acanthocephalus sp. Prevalence of internal parasites was higher in Cyprinus carpio (8.77%). Clarias Gariepinus on the other hand, had a higher intensity. Fish were mostly infected during the dry season. Nevertheless, a high parasitic load was observed in the rainy season. Specimens collected in the earthen ponds show a higher prevalence (p < 0.05), while those in concrete ponds had a higher infection intensity. Females were more prevalent contrary to males which have a higher intensity. Parasites were identified from the body cavities and gastrointestinal tracts of fishes. Comparison of Length/Weight relationship and Fulton condition index K does not show any differences between the parasitized and non-parasitized specimens. Parasites with a zoonotic potential were detected in this study, highlighting the importance of intensifying biosecurity and parasite control measures in fish farms in West Cameroon.

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Synopsis of the species of Myxobolus Bütschli, 1882 (Myxozoa: Myxosporea, Myxobolidae) described between 2005 and 2013

2014

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A synopsis of the species of Myxobolus Bütschli, 1882 (Myxozoa, Myxosporea, Myxobolidae) described between 2005 and 2013 is presented, including 112 nominal species. For each species the most important morphological and morphometric features are indicated in tabulated format. Included are also accession numbers for molecular data (when available), site of the infection within the host, features of the vegetative stage, organ infected, etc., plus a full bibliography of the original records for these species.

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New Species of Myxobolus (Myxosporea: Myxobolidae) Parasites of Fresh Water Fishes in Cameroon (Central Africa)

Cited by 8 publications

References 1 publication

Morphological and Molecular Description of a New Species of Myxobolus (Myxosporea: Myxobolidae) Infecting Planiliza Macrolepis (Smith, 1846) From India

Morphological and Molecular Description of a New Species of Myxobolus (Myxosporea: Myxobolidae) Infecting Planiliza Macrolepis (Smith, 1846) From India

Internal parasitic helminth infecting reared fishes from the West Region of Cameroon: Epidemiological profile and effects on fish health

Synopsis of the species of Myxobolus Bütschli, 1882 (Myxozoa: Myxosporea, Myxobolidae) described between 2005 and 2013

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