Length-weight relationship and trophic level of hard-tail scad Megalaspis cordyla

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Abstract

Megalaspis cordyla popularly known as hard-tail scad or torpedo scad is a commercially important fish in Malaysia. The present study describes the length-weight relationship and trophic level of M. cordyla collected from the coastal waters of Tanjung Sepat, Selangor, Malaysia from December 2010 to November 2011. A total of 375 specimens ranging from 17.3-37.5 cm total length and 52.40-451.12 g body weight were analysed in this study. The growth form meant that the allometric coefficient b of the length-weight relationships was less than three, suggesting negative allometric growth for males (b = 2.65), females (b = 2.77), and combined sex (b = 2.64). The regression coefficient was not significantly different between the sexes. Stomach content analysis revealed that both males and females fed mostly on teleost (90%, 88%) followed by crustaceans (7%, 8%) and molluscs (4%, 4%), respectively. The estimated mean trophic level for the males and females were 3.67 ± 0.04 and 3.84 ± 0.05, respectively, indicating that they are largely carnivorous. In this study we found less diverse diets compared to previous reports, which might be indicative of anthropogenic disturbance to their food chain and ecosystem.

Original languageEnglish
Pages (from-to)317-322
Number of pages6
JournalScienceAsia
Volume40
Issue number5
DOIs
Publication statusPublished - 1 Oct 2014

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tail
Malaysia
gender
food chain
molluscs
coastal water
anthropogenic activities
stomach
Crustacea
body weight
ecosystems
fish
diet
Megalaspis cordyla
trophic levels

Keywords

  • Diet
  • Feeding niche
  • Pelagic fish
  • Population growth
  • Tropical waters

ASJC Scopus subject areas

  • General

Cite this

Length-weight relationship and trophic level of hard-tail scad Megalaspis cordyla. / Das, Simon Kumar; De, Moumita; Abd. Ghaffar, Mazlan.

In: ScienceAsia, Vol. 40, No. 5, 01.10.2014, p. 317-322.

Research output: Contribution to journalArticle

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