eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-04-14 6 1 131 138 7981 article Seema Langer, 1 Archana Kumari 1 Yahya Bakhtiyar 1 Anshu Samyal 1 Department of Zoology, University of Jammu, Jammu - 180 001 (India).February 17, 2009 Eight morphometric characters of Macrobrachium dayanum (Henderson), a freshwater prawn were measured from 6 males and 6 females collected monthly for a period of one year (January 2007- December 2007) from three sites viz. Gho-Manhasan, Kheri and Nagri. Morphometric description of the species, M.dayanum included the parameters viz. length of specimen, carapace length, rostral length, eyestalk length, periopod length, pleopod length, uropod length and rostral formula. Comparison of morphometric characters between sexes indicated significant difference in the length of II periopod. In males, longer II periopod was observed than the females from all the three sites. https://www.biotech-asia.org/vol6no1/studies-on-the-morphometry-of-macrobrachium-dayanum-decapoda-palaemonidae/ Macrobrachium dayanum; morphometric characters; Jammu