Nematodes of the order Rhabditida from Tehran province, Iran. The family Panagrolaimidae with description of Halicephalobus persicus sp. n. and a key to species of Halicephalobus Timm, 1956

Shokoohi, Ebrahim; Abolafia, Joaquín; Zad, J.

doi:10.1163/156854107782024785

Cited by 7 publications

(1 citation statement)

References 4 publications

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“…They were all light-microscopically identified as the morphospecies Halicephalobus gingivalis using different identification keys (Geraert et al 1988;Shokoohi et al 2007). No males were observed confirming that this species is parthenogenetic (Stefansky, 1954;Andrássy, 1984;Akagami et al 2007;Fonderie et al 2009).…”

Section: Maintenance Of Culturesmentioning

confidence: 95%

Anthelmintic tolerance in free-living and facultative parasitic isolates ofHalicephalobus(Panagrolaimidae)

et al. 2012

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S U M M A R YStudies on anthelmintic resistance in equine parasites do not include facultative parasites. Halicephalobus gingivalis is a freeliving bacterivorous nematode and a known facultative parasite of horses with a strong indication of some form of tolerance to common anthelmintic drugs. This research presents the results of an in vitro study on the anthelmintic tolerance of several isolates of Halicephalobus to thiabendazole and ivermectin using an adaptation of the Micro-Agar Larval Development Test hereby focusing on egg hatching and larval development. Panagrellus redivivus and Panagrolaimus superbus were included as a positive control. The results generally show that the anthelmintic tolerance of Halicephalobus to both thiabendazole and ivermectin was considerably higher than that of the closely related Panagrolaimidae and, compared to other studies, than that of obligatory equine parasites. Our results further reveal a remarkable trend of increasing tolerance from fully freeliving isolates towards horse-associated isolates. In vitro anthelmintic testing with free-living and facultative parasitic nematodes offers the advantage of observing drug effect on the complete life cycle as opposed to obligatory parasites that can only be followed until the third larval stage. We therefore propose Halicephalobus gingivalis as an experimental tool to deepen our understanding of the biology of anthelmintic tolerance.

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Section: Maintenance Of Culturesmentioning

confidence: 95%

Anthelmintic tolerance in free-living and facultative parasitic isolates ofHalicephalobus(Panagrolaimidae)

et al. 2012

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Morphological and molecular analysis of Propanagrolaimus siweyae sp. n. (Nematoda: Panagrolaimidae) from Molepo dam, Limpopo Province, South Africa, and its relationship with water parameters

Shokoohi,

Masoko

2024

Biologia

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Panagrolaimidae members are bacterivorous with global distribution. There is no information on this species' morphology and molecular characterization in South Africa. During a survey of Molepo dam, Limpopo Province, a population of Propanagrolaimus nematodes belonging to the family Panagrolaimidae was recovered and determined utilizing conventional and molecular characters. Propanagrolaimus siweyae sp. n., was confirmed by morphological and molecular informations. Propanagrolaimus siweyae sp. n. is characterized by a body length 1026–1258 µm (a = 39.4–45.5, b = 5.4–6.5, c = 8.1–10.0, c’ = 6.9–7.8, V = 53–57), post vulval uterine sac 25–53 µm, and tail length 108–158 µm long. The scan electron microscopy (SEM) photographs revealed a tessellated cuticle and six slightly separated lips. The discriminant analysis placed populations of P. siweyae sp. n. close to P. hygrophilus with clear separation from the mentioned species. Partial sequences of the 18S and 28S regions of the ribosomal DNA gene were amplified for P. siweyae sp. n. The phylogenetic analysis grouped P. siweyae sp. n. in a clade with 1.00 and 0.87 posterior probability values together with other Propanagrolaimus and Halicephalobus based on 18S and 28S rDNA, respectively. Principal component analysis revealed no correlation between Propanagrolaimus and water parameters. However, the result showed a high correlation with diatoms (r = 0.937) in Molepo dam (site MD-6). In contrast, The PCA showed salinity, pH, and temperature with no significant effect on nematodes in Molepo dam, Limpopo Province, South Africa. In conclusion, the usefulness of free-living nematodes as bioindicators is an advantage to studying pollution in aquatic systems. Limpopo Province is facing pollution in the river and dam systems. Therefore, finding a bioindicator is critical to examine the ecological role of free-living nematodes such as Propanagrolaimus.

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Maxillary Granulomatous Inflammation Caused by Halicephalobus gingivalis (Nematoda) in a Connemara Mare in Belgium

Fonderie

Vries

Verryken

et al. 2013

Journal of Equine Veterinary Science

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Nematodes of the order Rhabditida from Tehran province, Iran. The family Panagrolaimidae with description of Halicephalobus persicus sp. n. and a key to species of Halicephalobus Timm, 1956

Cited by 7 publications

References 4 publications

Anthelmintic tolerance in free-living and facultative parasitic isolates ofHalicephalobus(Panagrolaimidae)

Anthelmintic tolerance in free-living and facultative parasitic isolates ofHalicephalobus(Panagrolaimidae)

Morphological and molecular analysis of Propanagrolaimus siweyae sp. n. (Nematoda: Panagrolaimidae) from Molepo dam, Limpopo Province, South Africa, and its relationship with water parameters

Maxillary Granulomatous Inflammation Caused by Halicephalobus gingivalis (Nematoda) in a Connemara Mare in Belgium

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