Indexing

Evaluation of Fish Catch in Potential Fishing Zones (PFZs) off Veraval Coast, Gujarat

Author: V.M. Chavda, D.T. Vaghela, H.V. Parmar and P.V. Parmar

PDF Download PDF

Abstract

Oceanographic features such as thermal fronts, eddies, gyres, currents and nutrient rich upwelling areas attract certain fish assemblages or affect their distribution. Remote sensing tool can be attempted for optimal harvest of fishery resources as well as to make fishing operation viable through potential fishing zone forecast. Satellite based sea surface temperature (SST) and chlorophyll images were utilized in the present study to locate Potential Fishing Zones (PFZ). Indian National Center for Ocean Information Services (INCOIS) provides satellite-based potential fishing zones (PFZs) forecasts using integration of Ocean Colour derived chlorophyll concentration and Advanced Very High Resolution Radiometer (AVHRR) derived sea surface temperatures (SST). In the present study evaluation of fish catch was carried out during 2017 – 2018 using commercial fishing vessels off Veraval coast at 20 to 50m depth in PFZ demarcated and non-PFZ areas using trawl net. Species-wise CPUE were compa

Keywords

PFZ, Potential fishing zone, SST, Chlorophyll, CPUE, Veraval coast.

Conclusion

Affinity towards oceanographic features and trophic interactions play important role for distribution and availability of desired fish species in the sea. Fish catch in potential fishing zone remains higher compared to random fishing at sea. Catch composition remained in favour of valued species like Clupeids, Carangids, Trichurus, Scombrids in PFZs, which provide higher returns for the given operation cost of fishing vessel. The fishing methods, price behaviour of marine fish varieties remains main factors for economic performance of fishing operation

References

-

How to cite this article

Chavda, V.M., Vaghela, D.T., Parmar, H.V. and Parmar, P.V. (2021). Evaluation of Fish Catch in Potential Fishing Zones (PFZs) off Veraval Coast, Gujarat. Biological Forum – An International Journal, 13(3): 127-133.