IMPACT OF CLIMATE ANOMALY ON CATCH COMPOSITION OF NERITIC TUNA IN SUNDA STRAIT
Abstract: Tongkol
komo/kawakawa (Euthynnus affinis) and tenggiri (Scomberomerus guttatus) are
commonly caught by mini purseiners operated in Sunda Straits and landed in
Labuan, West Java. This species inhabits coastal water and has preference
staying in relatively warm water. Oceanography parameters commonly influencing
the distribution of Euthynnus affinis are temperature, current, and salinity.
The oceanography of Sunda Strait is influenced by water masses coming from the
north that mainly originated from the Java Sea and water masses from the south
mainly originated from Indian Ocean. The internal oceanography of Sunda Strait
is also influenced by upwelling and monsoon as regional climate anomaly (ENSO
and Indian Ocean Dipole Mode). This paper describes the influence of Dipole
Mode (positive and negative event) and ENSO (El- Nino/La-Nina) to the catch
dynamics of neritic tuna particularly in Sunda Straits waters. The results
shown that regional climate anomaly influenced neritic tuna catch and its
composition. The catches Euthynnus affinis in phase negative dipole mode or
La-Nina were higher and dominated the catch composition of pelagic fishes of
Sunda Strait. Similar situation also is showen by Scomberomorus commerson.
Keywords: Neritic tuna;
climate anomaly impact; Sunda Strait
Author: Khairul Amri, Fayakun
Satria
Journal Code: jpperikanangg130026
