The present study was conducted to know
gender ratios of prawns and shrimps from U-To Creek
of Chaungtha, Pathein Township, Ayeyawady Region
from January to December 2017. Samples of prawn and
shrimp were collected from monthly visit (three
consecutive days / month). From the monthly collection
of females and males, twenty subsamples of each species
were randomly taken from fisherman. Genders were
determined as males, females and ovigerous females. A
total of 14 species belonging to five genera under three
families were recorded. Male, female and ovigerous
female proportion of different species were different
seasonally in the catches. Highly significant catch
weight of female was recorded more than male.
Keywords : Prawns and Shrimps; Overall Sex Ratio; Ovigerous Females.