Age composition of two dominant fish species in fringing shallow water of Bidong Island, South China Sea, Malaysia

R. Mat Piah, S. A. Kamaruddin, N. L. Buang, Mazlan Abd. Ghaffar

Research output: Contribution to journalArticle

Abstract

Aim: The age composition of Monogrammed monocle bream, Scolopsis monogramma and Fork-tailed threadfin bream, Nemipterus furcosus in fringing shallow water of Bidong Island, South China Sea was studied for the first time. Methodology: Fish samples were collected by baited portable traps, gill netting and hand-lining during pre-northeast monsoon season. A pair of otoliths were extracted by the open hatch method, cleaned and embedded in epoxy resin. The fish age was determined by counting the opaque zone in sectioned otoliths and was validated by marginal increment analysis. Results: This study found that both species comprised of older fish with S. monogramma in between 4 to 9 years and 4 to 8 years in N. furcosus. No smaller or younger fish was observed, probably due to selective sampling efforts. The marginal increment analysis recorded an increase of 11% from August to September for S. monogramma and by using this increase, the growth ring was expected to be completed in April. In N. furcosus, a 14% increase was observed and expected to be completed in January. Interpretation: This study concluded that the S. monogramma and N. furcosus in the fringing shallow water of Bidong Island comprised of older individuals. Further studies should be carried out by extending the duration of sampling, using a wider range of legal mesh and hook sizes to potentially obtain a more comprehensive size range to investigate the growth parameters of the fish.

Original languageEnglish
Pages (from-to)849-856
Number of pages8
JournalJournal of Environmental Biology
Volume39
Issue number5
DOIs
Publication statusPublished - 1 Sep 2018
Externally publishedYes

Fingerprint

Malaysia
Islands
Oceans and Seas
Fish
China
Fishes
Otolithic Membrane
Water
Chemical analysis
Epoxy Resins
Sampling
Hatches
Growth
Hooks
Linings
Hand
Epoxy resins

Keywords

  • Bidong Island
  • Nemipterus furcosus
  • Otolith
  • Population dynamics
  • Scolopsis monogramma

ASJC Scopus subject areas

  • Environmental Engineering
  • Toxicology
  • Health, Toxicology and Mutagenesis

Cite this

Age composition of two dominant fish species in fringing shallow water of Bidong Island, South China Sea, Malaysia. / Piah, R. Mat; Kamaruddin, S. A.; Buang, N. L.; Abd. Ghaffar, Mazlan.

In: Journal of Environmental Biology, Vol. 39, No. 5, 01.09.2018, p. 849-856.

Research output: Contribution to journalArticle

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