alexa Interactions of Squid and Small Pelagic Resources in the Alas Strait, Indonesia | OMICS International | Abstract
ISSN: 2473-3350

Journal of Coastal Zone Management
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Research Article

Interactions of Squid and Small Pelagic Resources in the Alas Strait, Indonesia

Abstract

Small pelagic and squid fisheries of the Alas Strait in Indonesia are compared, to explore potential
interactions between major components caught, which may then be taken into management
consideration. The data time series used for analysis were taken from major fishing harbours and
landing places, and go back as far as 1970s.
The small pelagic fishery in Alas Strait is mainly targeted upon squid (mostly Loligo edulis) by
means of ‘jala-oras’ (payang-type) fishing, which is also used to catch small pelagic fishes during
squid-off season. The small pelagic catches consist primarily of lemuru (Sardinella lemuru), tembang
(Sardinella fimbriata), layang scad (Decapterus spp), and kembung (Rastrelliger spp), which are
usually taken by various pelagic fishing gears. There was a general increase in the small pelagic
catches from around 4,000t in 1976 to nearly 12,000t in 1990, after which a considerable fluctuation
occurred, reaching a level of 8,000t in 1999. Squid catches increased steadily from <100t to 1,700t
prior to1978 due to “jala-oras” boat motorization, but fluctuated sharply afterward. Another peak
catch may be observed to approach 1,900t in 1997. During this period of large fluctuation, again, the
landings of small pelagic fishes tend to replace squid position.
There is a strong indication of the existence of interaction between squid and small pelagic
fisheries. In general the overall small pelagic exhibits a strong linear relationships with a correlation
coefficient, r, of 0.5270 (highly significant). More specifically their species components also shows even
stronger correlations, with coefficient correlation of 0.5898, 0.6686 and 0.6358 respectively for layang,
kembung and lemuru. Interactions of the species group and their substantial implication in fisheries
research and management are discussed in this paper.

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