Monocystis indicus, 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/0387AA00-9B09-B21D-13B5-DA9DFF3CB252 |
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treatment provided by |
Felipe |
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scientific name |
Monocystis indicus |
| status |
sp. nov. |
Monocystis indicus sp. nov. Figures 3 View Figure 3 (A-D), 4(A-D) Table B & Table 2
Description
(31.50±2.50) µm. Oocyst measures 10.55-11.00 (10.77±
0.46) µm x 7.00-8.50 (6.0± 0.50) µm.
In Monocystis indicus sp. nov. gamonts are oval shaped. Rounded nucleus is present at middle region of the body. Presence of smooth, thin and irregular shaped ectosarc. It contains highly granulated endosarc. At the anterior end of the body spherical mucron is present. Syzygy stage present in the life cycle. Gametocyst contains two unequal gametocytes and almost rounded in shape. Oocyst are biconical.
Gamont measures 89.61-111.6 (102.95±9.69) µm. x 59.29-70.72 (66.20±4.33) µm. Nucleus measures
14.30-20.4 (18.50±2.00) µm in diameter. Gametocyst measures 90.25-102.50 (39.25±5.55) µm in diameter. Large gametocyte measures 66.50-75.50 (70.90±4.50) µm x 35.80-45.50 (40.50±3.25) µm and small gametocyte measures 60.40-65.20 (64.54±3.54) µm x25.50-35.28
Taxonomic Summary
Type host: Eutyphoeus orientalis
Site of infection: Seminal vesicles
Type locality: Ashoknagar, North 24 Parganas (23°15'2" N-89 °5'E), West Bengal, India GoogleMaps .
Prevalence: 15 out of 40 host earthworms (37.5%) were infested with the parasite.
Material deposited
Holotype: PR/ MC/03 /12 has been deposited in the Parasitology Laboratory , Department of Zoology , University of Kalyani, Kalyani 741235, West Bengal, India.
Paratype: Systematic Research Collection , University of Nebraska State Museum, W 436. Nebraska Hall.Lincoin, Nebraska 68588-0514 USA (Acession no. P-2014-002; Reg. no. HWML 49896 View Materials ) .
Etymology: The species names have been given after the name of the nation India.
Remark
While comparing the present species with earlier described species Monocystis ayeshae and M. arabindae , it appears that the gamont of M. ayeshae is oval shaped bearing swolen middle part as that of the present species and in Monocystis arabindae the gamont is solitary, cylindrical curved due to presence of constriction at the lateral surface. In present species, mucron is prominent while in M. ayeshae and M. arabindae it is absent. In M. ayeshae , ectosarc is smooth, thin and granulated endosarc devoid of any spots. Nucleus is large and oval shaped. Whereas, ectosarc is smooth and thin in present species and highly granulated endosarc contains large granules. Nucleus is rounded and present at the middle portion of the body. In M. arabindae ectosarc is granulated and vaculated endosarc, nucleus rounded. The gametocyst of M. ayeshae is almost rounded contains unequal gametocytes as that of present species. While in M. arabindae gametocyst is ellipsoidal. In M. ayeshae , oocyst is navicular with pointed ends while it is biconical in M.arabindae as that of present form. Syzygy stage found in present form. While it is not present in M. ayeshae and M. arabindae . Moreover, M. ayeshae and M. arabindae have been reported from Metaphire posthuma of Satkhira, Bangladesh and Eutyphoeus incommodus from West Midnapore, West Bengal, India respectively but the present species have been described from the Eutypohoeus orientalis collected from Ashoknagar, West Bengal, India ( Table 2).
Considering all the differences with the closely related species the present species seems to be new to science. Hence the name Monocystis indicus sp. nov. is being proposed.
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