Discovery of a Population of a Virtually Unknown Large Freshwater Bivalve Parreysia rajahensis (Lea, 1841) (Unionoidea : Amblemidae) in the River Subernarekha, India

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Authors

  • Gopal Sharma
     Zoological Survey of India, Gangetic Plains Regional Station, Rajendra Nagar, Patna-800 016, Bihar ,IN
  • Hasko Nesemann
     Aquatic Ecology Centre, School of Science, Dep. of Environmental Sciences and Engineering, Kathmandu University, P.O.Box. No. 6250, Dhulikhel, Kavre district ,NP
  • Subodh Sharma
     Aquatic Ecology Centre, School of Science, Dep. of Environmental Sciences and Engineering, Kathmandu University, P.O.Box. No. 6250, Dhulikhel, Kavre district ,NP

Keywords:

Bivalve, Perreysia rajahensis, Subernarekha River, Population, Water Quality, Abundance.

Abstract

Living populations of a large freshwater bivalve. Parreysia rajahensis (Lea, 1841) were found for the first time in the river Subernarekha. This bivalve species was found to occur in six localities of that river in altitudes ranging from 11 m to 196 m above mean sea level. In the middle reach of the river at Moori, Lupungdih and Maubhandar only empty shells of this bivalve species were available. Whereas, living populations of this bivalve were observed in the lower reach of the river at Gopiballabhpur and Jaleshwar. In addition, one living specimen of P. rajahensis was found in Kharkai confluence at Domuhani. Water qualities of the sampling sites were measured and relative abundance of this bivalve species along with its associate benthic molluscs was also estimated.

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Published

2009-12-01

Issue

Volume 6, Issue 2, December 2009

Section

Articles

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