A. Anuja Vinod K. Yadav


Kombuthurai has been described as a fishing village in Thoothukudi district, Tamil Nadu which has gained immense importance by practicing sustainable fishing practices. In Kombuthurai village during 2009-2013, catch per unit effort (CPUE) has varied from 0.20 tonnes to the maximum of 0.25 tonnes during this period. It is interesting to know that despite the range of effort varying from 1598hrs to 1720hrs, the catch remained in the range of 347.4 tonnes to a maximum of 430.8tonnes. The influence of various variables (latitude, longitude, distance, depth, seasons, years and fishing gear type) on CPUE was studied by General Linear Model (GLM) and Generalized Linear Model (GLMs). Normal distribution with identity link function and a gamma distribution with log link function were used in GLMs. The variables that were found to be significant in both of the models and distributions are year and season. GLM model was good fit with R2 ranging from 67.60% to a high of 91.7%.The low and high abundance of CPUE were categorized taking the below and above average CPUE. A binary logistic regression model was used between the CPUE abundance and with above mentioned independent variables. The binary logistic regression model explained 75.4% (Nagelkerke R2) of the variance in high CPUE abundance and correctly classified 88% of cases. The independent variable such as latitude, longitude, depth, and distance added significantly to the model, but the year, season and hooks did not add significantly to the model.


Download data is not yet available.




Binary logistic regression, CPUE, General Linear Model (GLM), Hooks and line fishery

Anuja, A., V.K. Yadav, M. Krishnan and N.R. Kumar (2018). Catch rates and sustainable yield of Hook and Line Fishery -A Case Study of Kombuthurai village of Thoothukudi district of Tamilnadu. Indian Journal of Geo-Marine Science,47(2):489-497
Allen, R. and Punsly, R. (1984). Catch rates as indices of abundance of yellowfin tuna, Thunnusalbacares, in the eastern Pacific Ocean. Bull. Inter-Amer.Trop.Tuna Comm. 18(4): 301-379.
FAO (2005). The state of world fisheries and aquaculture. Food and Agriculture Organization of the united nations, Rome, pp.3-42
GOT(2012). Government of Tamil Nadu, Department of Economics and Statistics, Statistical Hand Book of Tamil Nadu, 2012. p.41.
Gavaris, S. (1980).Use of a multiplicative model to estimate catch rate and effort from commercial data. Can.J.Fish. Aquati.Sci.37, 2272-2275
Maunder, M.N., and Punt, A.E. (2004). Standardizing catch and effort data: a review of recent approaches, Fisheries Research 70: 141-159
Nelder, J.A., Wedderburn, R.W.M.(1972). Generalised linear models, J. R.Statist. Soc. A 137: 370–384.
Citation Format
How to Cite
Anuja, A., & Yadav, V. (2018). Use of different approach in finding catch effort relationship in hook and line fishery in Kombuthurai village of Thoothukudi district of Tamil Nadu. Journal of Applied and Natural Science, 10(2), 648-654. https://doi.org/10.31018/jans.v10i2.1756
More Citation Formats:
Research Articles