Monocystis eutyphae, Sarkar & Kundu & Bandyopadhyay, 2019
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publication ID |
https://doi.org/ 10.26515/rzsi/v119/i4/2019/142223 |
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persistent identifier |
https://treatment.plazi.org/id/0387AA00-9B0C-B219-1056-DEECFBB2B423 |
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treatment provided by |
Felipe |
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scientific name |
Monocystis eutyphae |
| status |
sp. nov. |
Monocystis eutyphae sp. nov. Figures 1 View Figure 1 (A-D), 2(AD) Table A & Table 1
Description
In Monocystis eutyphae sp. nov. gamonts are fusiform, anterior portion is wider than the posterior end. The anterior end contains mucron. Nucleus is rounded, situated in the middle portion of the body. The pellicle is thin. Presence of highly granulated endosarc contains paraglycogen granules. Gametocyst ovoid with two unequal gametocytes. Oocysts are biconical.
Gamont measures 100.7 - 107.8 (104.83 ± 2.02) µm in length and width of the anterior part of gamont is 51.93 - 59.67 (55.68±3.13) µm and Posterior part is 20.99-23.86 (22.69 ± 1.08) µm. Diameter of nucleus is 10.5-11.0 (9.0 ± 1.05). Gametocyst measures 89.50-96.13(93.04 ± 2.81) µm in length and 67.40 - 78.45(72.37 ± 4.35) µm in width. Length of the oocyst measuring 13.25-15.47(14.30 ± 0.91) µm and width measuring 9.94-13.26 (11.70 ± 1.40) µm.
Taxonomic Summary
Type host: Eutyphoeus orientalis .
Site of infection: Seminal vesicles.
Type locality: Ashoknagar, North 24 Parganas (23º15’2’’ N- 89º5’E), West Bengal, India GoogleMaps .
Prevalence: 20 out of 40 host earthworms (50%) were infested with the parasite.
Material deposited
Holotype: PR/ MC/01 /12 has been deposited at the Parasitology Laboratory , Department of Zoology, University of Kalyani 741235, and West Bengal, India.
Paratype: The paratype has been deposited in the Harold W Manter, Laboratory of Parasitology , Systematic Research Collections, University of Nebraska State Museum, W 436, Nebraska Hall, Lincoln, Nebraska 68588-0514 USA,(Accession no. P-2014-002; Reg.no. HWML 49901 View Materials ) .
Etymology: The species name has been derived from the generic name of the host specimen, Eutyphoeus orientalis .
Remark
The species under discussion shows similarities and dissimilarities with Monocystis lalbagensis and Monocystis nadiensis respectively. The present species differs from M. Lalbagensis relating its shape and size of the body. Trophozoites are cone shaped in M. lalbagensis , while they are balloon shaped in M. nadiensis and fusiform in M eutyphae sp. nov. In M. lalbagensis vacuoles excavate the endosarc whereas, in M. nadiensis , cytoplasm is densely granulated as like as that of present species. The anterior end of present species is wider than the posterior end which looks like blunt shaped. A big ovoidal distinct mucron is present in the anterior portion. The nucleus is rounded, present near the mucron at anterior portion of the body. Pellicle is thin. In the present form syzygy stage is present in the life cycle, while this stage is absent in the earlier described species. The position, shape and size of the nucleus, gametocyst and oocyst, host and the geographic location of the present species differ from the earlier described species ( Table 1).
Taking into consideration all the differences with the closely related species, the present species seems to be new to science. Hence the name Monocystis eutyphae sp. nov. is being proposed here.
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