Effect of oceanographic conditions on skipjack tuna catches from FAD versus free-swimming school fishing in the Makassar Strait

A. R.S. Putri, M. Zainuddin, M. Musbir, M. A. Mustapha, R. Hidayat

Research output: Contribution to journalConference article

Abstract

Fish Aggregating Devices (FADs) have become the preferred choice in skipjack tuna fisheries rather than looking for free-swimming schools (FSS) which is considered less effective. This study aimed to identify the effect of oceanographic conditions on skipjack tuna catches in the FADs versus free-swimming schools in the Makassar Strait. We collected fishing data from vessels using purse seine fishing gear and satellite-based oceanographic data (Sea Surface Temperature (SST) and chlorophyll-a (chl-a)) from May to July 2017. The satellite and catch data were analysed using a Generalized Additive Model implemented in R and mapped using Spatial Analyst in ArcGIS 10.6. The results showed that SST ranges in the FAD areas were relatively wider (29 - 31C) than those in free-swimming school areas (29.5 - 30.5C). The chl-a concentrations in free-swimming school areas were relatively higher (0.25 - 0.80 mg m-3) than those in the FAD areas (0.15 - 0.50 mg m-3). It was also found that mean skipjack tuna catches in the FAD areas (337 fish/setting) were relatively higher than in the free-swimming school areas (145 fish/setting). These findings suggest that the high skipjack tuna catches in Makassar Strait were significantly affected by specific SST ranges and relatively low chl-a.

Original languageEnglish
Article number012008
JournalIOP Conference Series: Earth and Environmental Science
Volume370
Issue number1
DOIs
Publication statusPublished - 3 Dec 2019
Event2nd International Symposium on Marine Science and Fisheries, ISMF 2019 - Makassar, Indonesia
Duration: 22 Jun 2019 → …

Fingerprint

fish aggregating device
strait
fishing
chlorophyll a
sea surface temperature
tuna fishery
catch statistics
fishing gear
fish
satellite data
vessel
effect
school

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Effect of oceanographic conditions on skipjack tuna catches from FAD versus free-swimming school fishing in the Makassar Strait. / Putri, A. R.S.; Zainuddin, M.; Musbir, M.; Mustapha, M. A.; Hidayat, R.

In: IOP Conference Series: Earth and Environmental Science, Vol. 370, No. 1, 012008, 03.12.2019.

Research output: Contribution to journalConference article

@article{3f8b0c859eee48df808dbd7899d89afc,
title = "Effect of oceanographic conditions on skipjack tuna catches from FAD versus free-swimming school fishing in the Makassar Strait",
abstract = "Fish Aggregating Devices (FADs) have become the preferred choice in skipjack tuna fisheries rather than looking for free-swimming schools (FSS) which is considered less effective. This study aimed to identify the effect of oceanographic conditions on skipjack tuna catches in the FADs versus free-swimming schools in the Makassar Strait. We collected fishing data from vessels using purse seine fishing gear and satellite-based oceanographic data (Sea Surface Temperature (SST) and chlorophyll-a (chl-a)) from May to July 2017. The satellite and catch data were analysed using a Generalized Additive Model implemented in R and mapped using Spatial Analyst in ArcGIS 10.6. The results showed that SST ranges in the FAD areas were relatively wider (29 - 31C) than those in free-swimming school areas (29.5 - 30.5C). The chl-a concentrations in free-swimming school areas were relatively higher (0.25 - 0.80 mg m-3) than those in the FAD areas (0.15 - 0.50 mg m-3). It was also found that mean skipjack tuna catches in the FAD areas (337 fish/setting) were relatively higher than in the free-swimming school areas (145 fish/setting). These findings suggest that the high skipjack tuna catches in Makassar Strait were significantly affected by specific SST ranges and relatively low chl-a.",
author = "Putri, {A. R.S.} and M. Zainuddin and M. Musbir and Mustapha, {M. A.} and R. Hidayat",
year = "2019",
month = "12",
day = "3",
doi = "10.1088/1755-1315/370/1/012008",
language = "English",
volume = "370",
journal = "IOP Conference Series: Earth and Environmental Science",
issn = "1755-1307",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Effect of oceanographic conditions on skipjack tuna catches from FAD versus free-swimming school fishing in the Makassar Strait

AU - Putri, A. R.S.

AU - Zainuddin, M.

AU - Musbir, M.

AU - Mustapha, M. A.

AU - Hidayat, R.

PY - 2019/12/3

Y1 - 2019/12/3

N2 - Fish Aggregating Devices (FADs) have become the preferred choice in skipjack tuna fisheries rather than looking for free-swimming schools (FSS) which is considered less effective. This study aimed to identify the effect of oceanographic conditions on skipjack tuna catches in the FADs versus free-swimming schools in the Makassar Strait. We collected fishing data from vessels using purse seine fishing gear and satellite-based oceanographic data (Sea Surface Temperature (SST) and chlorophyll-a (chl-a)) from May to July 2017. The satellite and catch data were analysed using a Generalized Additive Model implemented in R and mapped using Spatial Analyst in ArcGIS 10.6. The results showed that SST ranges in the FAD areas were relatively wider (29 - 31C) than those in free-swimming school areas (29.5 - 30.5C). The chl-a concentrations in free-swimming school areas were relatively higher (0.25 - 0.80 mg m-3) than those in the FAD areas (0.15 - 0.50 mg m-3). It was also found that mean skipjack tuna catches in the FAD areas (337 fish/setting) were relatively higher than in the free-swimming school areas (145 fish/setting). These findings suggest that the high skipjack tuna catches in Makassar Strait were significantly affected by specific SST ranges and relatively low chl-a.

AB - Fish Aggregating Devices (FADs) have become the preferred choice in skipjack tuna fisheries rather than looking for free-swimming schools (FSS) which is considered less effective. This study aimed to identify the effect of oceanographic conditions on skipjack tuna catches in the FADs versus free-swimming schools in the Makassar Strait. We collected fishing data from vessels using purse seine fishing gear and satellite-based oceanographic data (Sea Surface Temperature (SST) and chlorophyll-a (chl-a)) from May to July 2017. The satellite and catch data were analysed using a Generalized Additive Model implemented in R and mapped using Spatial Analyst in ArcGIS 10.6. The results showed that SST ranges in the FAD areas were relatively wider (29 - 31C) than those in free-swimming school areas (29.5 - 30.5C). The chl-a concentrations in free-swimming school areas were relatively higher (0.25 - 0.80 mg m-3) than those in the FAD areas (0.15 - 0.50 mg m-3). It was also found that mean skipjack tuna catches in the FAD areas (337 fish/setting) were relatively higher than in the free-swimming school areas (145 fish/setting). These findings suggest that the high skipjack tuna catches in Makassar Strait were significantly affected by specific SST ranges and relatively low chl-a.

UR - http://www.scopus.com/inward/record.url?scp=85077496267&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85077496267&partnerID=8YFLogxK

U2 - 10.1088/1755-1315/370/1/012008

DO - 10.1088/1755-1315/370/1/012008

M3 - Conference article

AN - SCOPUS:85077496267

VL - 370

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

SN - 1755-1307

IS - 1

M1 - 012008

ER -