Preliminary study on the morphology and biology of coexist Nemipterus furcosus and Nemipterus tambuloides from Terengganu waters, Peninsular Malaysia

Ying Giat Seah, Muhammad Nabilsyafiq, Mazlan Abd. Ghaffar

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Abstract

Background and Objective: Ichthyological study in Malaysia are still lacking and generally bycatch are received little attention. The study describes the differences between two coexist commercially important dominant species Nemipterus furcosus and Nemipterus tambuloides for morphological characteristics, length-weight relationship and some biological aspects. Materials and Methods: The specimen were collected from Pulau Kambing fish landing port, Terengganu during October, 2013. Fishes were examined for their systematic account differences. Length-weight relationships were calculated using the allometric regression analysis (W = aLb). Trophic levels were assessed by relative length of gut (RLG) and reproductive information obtained by gonadosomatic index (GSI) and hepatosomatic index (HSI). Results: Nemipterus furcosus and N. tambuloides were easily distinguished in fresh condition, but displayed almost similar appearances in faint or preservation condition. Through detailed examination on morphological parameters both species had high similarities in meristic counts and morphometric measurements. There were however, three parameters, that significantly differentiated the two species: length of dorsal fin base, predorsal length and length of pectoral fin. In similar unit of standard length, N. furcosus had greater body weight compare to N. tambuloides. The population growth pattern indicated both N. furcosus (2.71±0.17) and N. tambuloides (2.54±0.16) experience negative allometric growth, i.e., both species became more slender as their lengths increased. The estimated mean RLG for N. furcosus and N. tambuloides were >1 (1.28±0.18 and 1.17±0.09, respectively), which indicated that both species were omnivorous fish. However, a negative relationship between RLG and total length was also found suggesting that both species tended towards a carnivorous diet as they grew bigger, especially for N. tambuloides. The gut lengths and RLG values for N. furcosus were greater than N. tambuloides. Gonad and liver weights for both species increased with body weight and the rate of increase in gonad weight was greater than liver weight. However, the GSI and HSI values almost remain constant for both species, revealing all samples were in the same state of gonad maturation in present study. Conclusion: The N. furcosus having shorter predorsal and pectoral fin length but longer dorsal fin base compare to N. tambuloides. Both species have newly discovered as omnivorous fish but tended towards a carnivorous diet during growth. These coexist species share similar pattern on population growth and reproductive biology.

Original languageEnglish
Pages (from-to)418-424
Number of pages7
JournalJournal of Fisheries and Aquatic Science
Volume11
Issue number6
DOIs
Publication statusPublished - 2016

Fingerprint

Nemipterus
Malaysia
Biological Sciences
water
digestive system
fins
length-weight relationship
fish
gonads
population growth
hepatosomatic index
gonadosomatic index
diet
meristics
reproductive biology
bycatch
trophic level
liver
maturation
body weight

Keywords

  • Gonadosomatic index
  • Hepatosomatic index
  • Length-weight relationship
  • Morphological characteristic
  • Relative length of gut

ASJC Scopus subject areas

  • Aquatic Science
  • Animal Science and Zoology

Cite this

@article{d8630755f1d841ffa939a88f8e9ef9bc,
title = "Preliminary study on the morphology and biology of coexist Nemipterus furcosus and Nemipterus tambuloides from Terengganu waters, Peninsular Malaysia",
abstract = "Background and Objective: Ichthyological study in Malaysia are still lacking and generally bycatch are received little attention. The study describes the differences between two coexist commercially important dominant species Nemipterus furcosus and Nemipterus tambuloides for morphological characteristics, length-weight relationship and some biological aspects. Materials and Methods: The specimen were collected from Pulau Kambing fish landing port, Terengganu during October, 2013. Fishes were examined for their systematic account differences. Length-weight relationships were calculated using the allometric regression analysis (W = aLb). Trophic levels were assessed by relative length of gut (RLG) and reproductive information obtained by gonadosomatic index (GSI) and hepatosomatic index (HSI). Results: Nemipterus furcosus and N. tambuloides were easily distinguished in fresh condition, but displayed almost similar appearances in faint or preservation condition. Through detailed examination on morphological parameters both species had high similarities in meristic counts and morphometric measurements. There were however, three parameters, that significantly differentiated the two species: length of dorsal fin base, predorsal length and length of pectoral fin. In similar unit of standard length, N. furcosus had greater body weight compare to N. tambuloides. The population growth pattern indicated both N. furcosus (2.71±0.17) and N. tambuloides (2.54±0.16) experience negative allometric growth, i.e., both species became more slender as their lengths increased. The estimated mean RLG for N. furcosus and N. tambuloides were >1 (1.28±0.18 and 1.17±0.09, respectively), which indicated that both species were omnivorous fish. However, a negative relationship between RLG and total length was also found suggesting that both species tended towards a carnivorous diet as they grew bigger, especially for N. tambuloides. The gut lengths and RLG values for N. furcosus were greater than N. tambuloides. Gonad and liver weights for both species increased with body weight and the rate of increase in gonad weight was greater than liver weight. However, the GSI and HSI values almost remain constant for both species, revealing all samples were in the same state of gonad maturation in present study. Conclusion: The N. furcosus having shorter predorsal and pectoral fin length but longer dorsal fin base compare to N. tambuloides. Both species have newly discovered as omnivorous fish but tended towards a carnivorous diet during growth. These coexist species share similar pattern on population growth and reproductive biology.",
keywords = "Gonadosomatic index, Hepatosomatic index, Length-weight relationship, Morphological characteristic, Relative length of gut",
author = "Seah, {Ying Giat} and Muhammad Nabilsyafiq and {Abd. Ghaffar}, Mazlan",
year = "2016",
doi = "10.3923/jfas.2016.418.424",
language = "English",
volume = "11",
pages = "418--424",
journal = "Journal of Fisheries and Aquatic Science",
issn = "1816-4927",
publisher = "Asian Network for Scientific Information",
number = "6",

}

TY - JOUR

T1 - Preliminary study on the morphology and biology of coexist Nemipterus furcosus and Nemipterus tambuloides from Terengganu waters, Peninsular Malaysia

AU - Seah, Ying Giat

AU - Nabilsyafiq, Muhammad

AU - Abd. Ghaffar, Mazlan

PY - 2016

Y1 - 2016

N2 - Background and Objective: Ichthyological study in Malaysia are still lacking and generally bycatch are received little attention. The study describes the differences between two coexist commercially important dominant species Nemipterus furcosus and Nemipterus tambuloides for morphological characteristics, length-weight relationship and some biological aspects. Materials and Methods: The specimen were collected from Pulau Kambing fish landing port, Terengganu during October, 2013. Fishes were examined for their systematic account differences. Length-weight relationships were calculated using the allometric regression analysis (W = aLb). Trophic levels were assessed by relative length of gut (RLG) and reproductive information obtained by gonadosomatic index (GSI) and hepatosomatic index (HSI). Results: Nemipterus furcosus and N. tambuloides were easily distinguished in fresh condition, but displayed almost similar appearances in faint or preservation condition. Through detailed examination on morphological parameters both species had high similarities in meristic counts and morphometric measurements. There were however, three parameters, that significantly differentiated the two species: length of dorsal fin base, predorsal length and length of pectoral fin. In similar unit of standard length, N. furcosus had greater body weight compare to N. tambuloides. The population growth pattern indicated both N. furcosus (2.71±0.17) and N. tambuloides (2.54±0.16) experience negative allometric growth, i.e., both species became more slender as their lengths increased. The estimated mean RLG for N. furcosus and N. tambuloides were >1 (1.28±0.18 and 1.17±0.09, respectively), which indicated that both species were omnivorous fish. However, a negative relationship between RLG and total length was also found suggesting that both species tended towards a carnivorous diet as they grew bigger, especially for N. tambuloides. The gut lengths and RLG values for N. furcosus were greater than N. tambuloides. Gonad and liver weights for both species increased with body weight and the rate of increase in gonad weight was greater than liver weight. However, the GSI and HSI values almost remain constant for both species, revealing all samples were in the same state of gonad maturation in present study. Conclusion: The N. furcosus having shorter predorsal and pectoral fin length but longer dorsal fin base compare to N. tambuloides. Both species have newly discovered as omnivorous fish but tended towards a carnivorous diet during growth. These coexist species share similar pattern on population growth and reproductive biology.

AB - Background and Objective: Ichthyological study in Malaysia are still lacking and generally bycatch are received little attention. The study describes the differences between two coexist commercially important dominant species Nemipterus furcosus and Nemipterus tambuloides for morphological characteristics, length-weight relationship and some biological aspects. Materials and Methods: The specimen were collected from Pulau Kambing fish landing port, Terengganu during October, 2013. Fishes were examined for their systematic account differences. Length-weight relationships were calculated using the allometric regression analysis (W = aLb). Trophic levels were assessed by relative length of gut (RLG) and reproductive information obtained by gonadosomatic index (GSI) and hepatosomatic index (HSI). Results: Nemipterus furcosus and N. tambuloides were easily distinguished in fresh condition, but displayed almost similar appearances in faint or preservation condition. Through detailed examination on morphological parameters both species had high similarities in meristic counts and morphometric measurements. There were however, three parameters, that significantly differentiated the two species: length of dorsal fin base, predorsal length and length of pectoral fin. In similar unit of standard length, N. furcosus had greater body weight compare to N. tambuloides. The population growth pattern indicated both N. furcosus (2.71±0.17) and N. tambuloides (2.54±0.16) experience negative allometric growth, i.e., both species became more slender as their lengths increased. The estimated mean RLG for N. furcosus and N. tambuloides were >1 (1.28±0.18 and 1.17±0.09, respectively), which indicated that both species were omnivorous fish. However, a negative relationship between RLG and total length was also found suggesting that both species tended towards a carnivorous diet as they grew bigger, especially for N. tambuloides. The gut lengths and RLG values for N. furcosus were greater than N. tambuloides. Gonad and liver weights for both species increased with body weight and the rate of increase in gonad weight was greater than liver weight. However, the GSI and HSI values almost remain constant for both species, revealing all samples were in the same state of gonad maturation in present study. Conclusion: The N. furcosus having shorter predorsal and pectoral fin length but longer dorsal fin base compare to N. tambuloides. Both species have newly discovered as omnivorous fish but tended towards a carnivorous diet during growth. These coexist species share similar pattern on population growth and reproductive biology.

KW - Gonadosomatic index

KW - Hepatosomatic index

KW - Length-weight relationship

KW - Morphological characteristic

KW - Relative length of gut

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EP - 424

JO - Journal of Fisheries and Aquatic Science

JF - Journal of Fisheries and Aquatic Science

SN - 1816-4927

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