International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064 Index Copernicus Value (2013): 6.14 | Impact Factor (2013): 4.438 Volume 4 Issue 9, September 2015 www.ijsr.net Licensed Under Creative Commons Attribution CC BY Length-Weight Relationship in Glossogobius giuris (Ham.) from Sukhna Lake, Chandigarh Veerpal Kaur 1 , Y. K. Rawal 2 1 Research Scholar, Division of Fisheries, Department of Zoology, Panjab University, Chandigarh – 160014, India 2 Assistant Professor, Division of Fisheries, Department of Zoology, Panjab University, Chandigarh – 160014, India Abstract: Length Weight Relationship (LWR) has been estimated for fresh water fish species, Glossogobius giuris (Ham.) from Sukhna Lake, Chandigarh. The value of correlation coefficient (r) and exponent ‘b’ has been found to be 0.892** and 3.18 respectively for Glossogobius giuris (Hamilton), thereby signifying a positive allometric growth. Keywords: Length-Weight Relationship, Glossogobius giuris (Ham.), Allometric growth, Sukhna Lake, Chandigarh. 1. Introduction “Lakes have been defined as a body of standing water occupying a basin and lacking continuity with sea” [1]. Lakes support a variety of flora and fauna amongst which fishes are the most important aquatic inhabitants. Length-weight relationship (LWR) is of great importance in fishery assessments [2] as it can give information on the life span, mortality, growth as well as total production [3]. Length-weight relationships allow us to convert growth-in- length equations to growth–in-weight equations in stock assessment models [4]. In addition, it is important in estimating the average weight at a given length group [5] and for assessing the relative well being of a fish population [6], [7]. There is no documentation on study of length weight relationship of fish species from Sukhna Lake. So, in the present investigation, LWR has been studied for Glossogobius giuris (Hamilton) collected from Sukhna Lake, Chandigarh. 2. Study Area Sukhna Lake, Chandigarh (Figure 1) is an artificial lake created at the foothills of the Himalayas, the Shiwalik hills in 1958. It was created by damming the Sukhna Choe, a seasonal stream coming down from the Shivalik Hills. Sukhna Lake is roughly kidney shaped and is located at 32°42' N Latitude and 76°54' E Longitude with its concavity facing the Shiwalik Himalayas. The Lake is 1.52 km long and 1.49 km wide with initial storage capacity of 1,074 ha-m of water. The submergence area is 228 ha (565 acres) at a maximum lake level of 353.57 m (1,160ft) above msl. Figure 1: Photograph of Sukhna Lake, Chandigarh 3. Material and Methods The data for length-weight analysis was collected during the different months of study period i.e. June 2012-May 2014 from Sukhna Lake, Chandigarh. A total of 46 specimens of Glossogobius giuris (Hamilton) have been analysed. Fishes were caught by using cast and gill net with hired help of fisherman through permission of Department of Animal Husbandry and Fisheries, U.T. Chandigarh. Data was measured by a single person so as to avoid handling errors of any kind and up to an accuracy of 0.1 cm and 0.1 gms [8]. The length-weight relationships were calculated by using Le Cren equation [9]. Linear transformation was made by using the natural logarithm of the observed lengths and weights [10]. 4. Results The study of LW data of this fish species will be helpful in fishery management. The sample size along with range of observed total length and total weight for fish species is shown inTable1. Table 1: Total Length, Number of specimens, Total Weight, correlation coefficient (r) of Glossogobius giuris (Ham.) collected from Sukhna Lake, Chandigarh. Total Length (cm) Number of specimens Total Weight (gms) Correlation coefficient „r‟ 4.10-10.20 46 0.81-10.60 0.892** Paper ID: SUB158586 2007