Design and General Characteristics of ‘Disco Dol’ (Two Seam Trawl) Operated along Ratnagiri, Maharashtra
V. G. Yewale *
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
M. M. Shirdhnakar
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
A. S. Mohite
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
S. K. Barve
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
R. H. Rathod
College of Fishery Science, Nagpur, Maharashtra, India.
K. J. Chaudhari
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
S. V. Patil
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
B. M. Yadav
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
S. M. Wasave
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
B. V. Naik
College of Fisheries, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri, Maharashtra, India.
*Author to whom correspondence should be addressed.
Abstract
The present investigation was taken to know the variations with respect to design, net specification, mesh size of Disco dol trawl net operated along the Ratnagiri coast. A total of 42 trawl net was sampled physically by using measurement tape and scale. The data were collected by structured schedule consisting of two major sections. The first section was for vessel details and second for the specifications of trawl nets. The study revealed that, two seam locally known ‘Disco dol’, operated from Ratnagiri was observed with eight belly sections of overall length ranges from 41 to 52m. Wings of the net were triangular in shape with a mesh size variation between 120-440 mm. The dimensions such as breadth, number of meshes along breadth and mesh size were decreasing from first to last belly section, but average number of meshes per metre were increasing from first to last belly. Wide reduction of 400-40 mm was observed in mesh sizes of belly section for Disco dol from first to last belly. Cod end mesh size of trawl operated from Jaigad, Kasarveli, Mirkarwada and Purnagad landing centres was recorded as 20 mm. In Ratnagiri, two seam trawl net was used mainly to catch fishes.
Keywords: Disco dol, fish trawl, two seam trawl, design, ratnagiri