SEX- RATIO STRUCTURE OF Puntius ticto IN SPRING FED RIVER AASAN FROM DISTRICT-DEHRADUN, UTTARAKHAND, INDIA
RAJESH RAYAL
Department of Zoology, School of Basic and Applied Sciences, SGRR University, Patel Nagar, Dehradun-248001, Uttarakhand, India.
VAISHALI SHARMA *
Department of Zoology, School of Basic and Applied Sciences, SGRR University, Patel Nagar, Dehradun-248001, Uttarakhand, India.
DEEKSHA MAMGAIN
Department of Zoology, School of Basic and Applied Sciences, SGRR University, Patel Nagar, Dehradun-248001, Uttarakhand, India.
PANKAJ BAHUGUNA *
Ecology Lab, Department of Zoology, B. D. Govt. P. G. College, Jaiharikhal-246193, Pauri Garhwal, Uttarakhand, India.
*Author to whom correspondence should be addressed.
Abstract
The present study was conducted to assess the sex ratio of the fish, Puntius ticto in the spring fed river Aasan in western Doon valley for a period of one year. Being an economically important but ignored species, its sex ratio assessment will help in understanding its occurrence and abundance in this area. During the study a total of 109 individuals were collected and their sex determined. In monthly study, the sex ratio varied from 1.66 male:1.00 female in the month of June to 1.00 male:1.60 female in the month of July, whereas in seasonal study it was recorded highest in spring season as 1.22 male:1.0 female and lowest in monsoon season as 1.00 male:1.56 female.
Keywords: Puntius ticto, sex ratio, River Aasan, Doon valley