COMPARISON OF DAY AND NIGHT CATCH WITH DRIFT GILLNET GEAR IN THE OF PASAR II NATAL MANDAILING NATAL REGENCY NORTH SUMATERA PROVINCE

Abstract

ABSTRACT

Driftgillnets are gill nets in which the way of operation is left to be washed away in the water, whether it is washed away on the surface, water column or at the bottom of the water. This study aims to calculate the number of catches of  driftgillnet during the day and nightin the District of Natal. The method used in this study is a survey method, where research data are obtained directly to the field by evaluating thedrift gillnet fishing gear operated by fishermen in Natal District.The date analysis used in this study was a t-test (Sudjana, 1982) to find the difference between day and night catches. From the result of the calculation of t-test catches during the day and night there are differences in catches, namely by  and db= 32, then obtained t_hit= -3,77, is outside the receiving area H₀ so that the alternative hypothesis H₁ is accepted, meaning that there are differences in catch based on the amount of weight (kg) during the day and night. While to find out the differences in catch based on the number of individuals (tails) namely with and db= 38, then obtainedt_hit= -3,333, is outside the receiving area H₀ so that the alternative hypothesis H₁ is accepted, meaning that there are differences in catch based on the number of individuals (tails) during the day and night.

Keywords: drift gillnet, catch comparisons, catches day and night