Objective: Biodiversity studies in search of endoparasitic acephaline gregarines of earthworms revealed a new species under the genus Rhynchocystis Hesse, 1909.
Methods: The species has been obtained from the seminal vesicles of the earthworm, Metaphire peguana. The parasite was identified using standard methodology.
Results: Gamonts are solitary, elongated with a conical, enlarged head and blunt posterior end. The mature gamont measures 419.90- 430.95 (425.05±4.70) μm in length and the width at the widest portion is 44.2-50.83 (47.88±2.85) μm and 15.47-17.68 (16.50±1.14) μm in the posterior end. The nucleus is elongated and positioned at the posterior end. The nucleus measures 17.68-22.01 (19.74±1.95) μmx11.05- 15.47 (13.40±1.95) μm. The measurement of the mucron is 13.26-17.68 (15.47±1.86) μmx17.68-22.1 (19.44±1.71) μm. Gametocysts are ovoid with two unequal sized gametocytes. The gametocyst measures 95.03-97.24 (96.20±1.14) μmx77.35-81.77 (79.56±1.86) μm. Large and small gametocytes measure 57.46-61.88 (59.81±1.76) μmx70.72-75.14 (72.48±1.71) μm and 30.94-37.57 (34.47±2.74) μmx61.88-66.3 (64.38±1.84) μm respectively. Oocysts are biconical, measuring 11.05-15.47 (12.81±1.71) μmx6.63-8.84 (7.70±1.20) μm.
Conclusion: A new gregarine parasite species is described.
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http://dx.doi.org/10.5152/tpd.2012.42 | DOI Listing |
Zootaxa
March 2023
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18, Hoangquocviet Rd., Caugiay, Hanoi..
The Metaphire peguana species-group was revised from the earthworm fauna of Vietnam. As a result, a total of seven species/subspecies have been assigned to this species-gro+up, namely M. peguana peguana (Rosa, 1890), M.
View Article and Find Full Text PDFZootaxa
May 2016
Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Email: unknown.
Earthworm specimens collected from various parts of Thailand were found to contain seven new species of the genus Metaphire Sims & Easton, 1972. These are M. songkhlaensis sp.
View Article and Find Full Text PDFTurkiye Parazitol Derg
July 2013
Department of Zoology, University of Kalyani, West Bengal, India.
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