The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia

Sagittal otolith morphometric measurements from Malaysian Mugilidae species were selected to investigate their possible role in species identification, due to the Mugilidae species’ morphological similarities, and age determination. Fish standard length (cm), otolith length (μm), width (μm) and mass...

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Main Authors: See, Morwenna, Marsham, Sara, Chang, Chih Wei, Chong, Ving Ching, A. Sasekumar, Dhillon, Sarinder Kaur, Loh, Kar Hoe
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2016
Online Access:http://journalarticle.ukm.my/9877/
http://journalarticle.ukm.my/9877/1/09_Morwenna.pdf
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author See, Morwenna
Marsham, Sara
Chang, Chih Wei
Chong, Ving Ching
A. Sasekumar,
Dhillon, Sarinder Kaur
Loh, Kar Hoe
author_facet See, Morwenna
Marsham, Sara
Chang, Chih Wei
Chong, Ving Ching
A. Sasekumar,
Dhillon, Sarinder Kaur
Loh, Kar Hoe
author_sort See, Morwenna
building UKM Institutional Repository
collection Online Access
description Sagittal otolith morphometric measurements from Malaysian Mugilidae species were selected to investigate their possible role in species identification, due to the Mugilidae species’ morphological similarities, and age determination. Fish standard length (cm), otolith length (μm), width (μm) and mass (g) measurements were taken from eight species: Chelon macrolepis, C. melinopterus, C. subviridis, Ellochelon vaigiensis, Moolgarda cunnesius, M. seheli, Mugil cephalus and Valamugil engeli. Otolith aspect ratio, OAS (otolith length divided by width), was calculated and compared between species. The four homogenous groups based on their OAS were C. melinopterus (mean=1.65) and V. engeli (1.66) and M. cunnesius (1.89) and E. vaigiensis (1.89); M. seheli (2.08), C. macrolepis (2.14) and M. cephalus (2.17); and the latter two with C. subviridis (2.43). The relationships between fish standard length and otolith length/mass showed positive correlations for both, with otolith length providing the stronger correlation (rs = 0.897, P < 0.001) than otolith mass (rs = 0.795, P < 0.001). It is concluded that the more morphologically similar species have similar otolith aspect ratios, related to head shape; however, otolith shape is also affected by a variety of other environmental factors that have to be taken account of.
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spelling oai:generic.eprints.org:98772016-12-14T06:51:07Z http://journalarticle.ukm.my/9877/ The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia See, Morwenna Marsham, Sara Chang, Chih Wei Chong, Ving Ching A. Sasekumar, Dhillon, Sarinder Kaur Loh, Kar Hoe Sagittal otolith morphometric measurements from Malaysian Mugilidae species were selected to investigate their possible role in species identification, due to the Mugilidae species’ morphological similarities, and age determination. Fish standard length (cm), otolith length (μm), width (μm) and mass (g) measurements were taken from eight species: Chelon macrolepis, C. melinopterus, C. subviridis, Ellochelon vaigiensis, Moolgarda cunnesius, M. seheli, Mugil cephalus and Valamugil engeli. Otolith aspect ratio, OAS (otolith length divided by width), was calculated and compared between species. The four homogenous groups based on their OAS were C. melinopterus (mean=1.65) and V. engeli (1.66) and M. cunnesius (1.89) and E. vaigiensis (1.89); M. seheli (2.08), C. macrolepis (2.14) and M. cephalus (2.17); and the latter two with C. subviridis (2.43). The relationships between fish standard length and otolith length/mass showed positive correlations for both, with otolith length providing the stronger correlation (rs = 0.897, P < 0.001) than otolith mass (rs = 0.795, P < 0.001). It is concluded that the more morphologically similar species have similar otolith aspect ratios, related to head shape; however, otolith shape is also affected by a variety of other environmental factors that have to be taken account of. Penerbit Universiti Kebangsaan Malaysia 2016-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9877/1/09_Morwenna.pdf See, Morwenna and Marsham, Sara and Chang, Chih Wei and Chong, Ving Ching and A. Sasekumar, and Dhillon, Sarinder Kaur and Loh, Kar Hoe (2016) The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia. Sains Malaysiana, 45 (5). pp. 735-743. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid45bil5_2016/KandunganJilid45Bil5_2016.html
spellingShingle See, Morwenna
Marsham, Sara
Chang, Chih Wei
Chong, Ving Ching
A. Sasekumar,
Dhillon, Sarinder Kaur
Loh, Kar Hoe
The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title_full The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title_fullStr The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title_full_unstemmed The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title_short The use of otolith morphometrics in determining the size and species identification of eight mullets (Mugiliformes: Mugilidae) from Malaysia
title_sort use of otolith morphometrics in determining the size and species identification of eight mullets (mugiliformes: mugilidae) from malaysia
url http://journalarticle.ukm.my/9877/
http://journalarticle.ukm.my/9877/
http://journalarticle.ukm.my/9877/1/09_Morwenna.pdf