Fisheries Survey On The Presence Of Skipjack (Katsuwonus Pelamis) In Bone Bay

Rini Sahni Putri • Indra Jaya • Sri Pujiyati

Abstrak

The presence of skipjack (Katsuwonus pelamis) is always subject to change depending on the condition of the surrounding waters favored by the fish. This study gives prediction of the existence of skipjack in the Bone Bay waters by using satellite remote sensing data and an overview of length-weight relationship obtained from fisheries survey. Satellite remike mote sensing data such as sea surface temperature and chlorophyll-a obtained from the NASA database with a spatial resolution of 4 km and a temporal resolution 8-day composite in Bone Bay waters. Fishery survey data such as position data, the fish catches, the length and weight of skipjack were obtained fishing base from two different locations namely Sinjai and Luwu. Satellite remote sensing data and fisheries survey data (position of the catch) were overlaid to determine the environmental conditions that are favor by skipjack. The results showed that the skipjack mostly found many in the waters with sea surface temperature range between 28.42°C to 31.12°C and with chlorophyll-a concentration between 0.1335 mg/m³ to 0.9542 mg/m³. Based on the length-weight relationship, the growth pattern of skipjack were caught in the waters of the Gulf of Bone is allometric negative.The presence of skipjack Katsuwonus pelamis is always subject to change depending on the condition of the surrounding watersfavored by the fish. This study gives prediction of the existence of skipjack in the Bone Bay waters by using satellite remote sensing data and an overview of length-weight relationship obtained fromfisheries survey. Satellite remote sensing data such as sea surface temperature and chlorophyll-a obtained from the NASA database with a spatial resolution of 4 km and a temporal resolution 8-day composite in Bone Bay waters. Fishery survey data such as position data, the fish catches, the length and weight of skipjack were obtained fishing base from two different locations namely Sinjai and Luwu. Satellite remote sensing data and fisheries survey data (position of the catch) were overlaidto determine the environmental conditions that are favor by skipjack. The results showed that the skipjack mostly found many in the waters with sea surface temperature range between 28.42°C to 30,73°C and with chlorophyll-a concentration between 0.1335 mg/m³to 0,2309 mg/m³. Based on the length-weight relationship, the growth pattern of skipjack were caught in the waters of the Gulf of Bone is allometric negative.

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