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Investigation of asymmetry in sagitta otolith features in relation to total length in Lethrinus species from the Red Sea coast of Yemen

Laith A. Jawad

Laith A. Jawad

  • School of Environmental and Animal Sciences, Unitec Institute of TechnologyAuckland, New Zealand
  • Marine and Aquatic Life Research Group, Scientific Research Centre, Al-Ayen Iraqi UniversityAn Nasiriyah, Iraq
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Jawad, Laith A.
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Nabil A. A. AL-Shwafi

Nabil A. A. AL-Shwafi

Environmental Science Department, Faculty of Petroleum and natural resources, Sana’a UniversitySana’a, Yemen
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AL-Shwafi, Nabil A. A.
  
30 giu 2025
Investigation of asymmetry in sagitta otolith features in relation to total length in Lethrinus species from the Red Sea coast of Yemen's Cover Image
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Categoria dell'articolo: Original research paper
Pubblicato online: 30 giu 2025
Pagine: 99 - 108
Ricevuto: 18 mar 2025
Accettato: 18 apr 2025
DOI: https://doi.org/10.26881/oahs-2025.1.09
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© 2025 Laith A. Jawad et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Three species of the family Lethrinidae examined from the Red Sea coast of Yemen. (A) Lethrinus borbonicus, 215 mm TL; (B) Lethrinus lentjan, 220 mm TL; (C) Lethrinus mahsena, 275 mm TL.
Three species of the family Lethrinidae examined from the Red Sea coast of Yemen. (A) Lethrinus borbonicus, 215 mm TL; (B) Lethrinus lentjan, 220 mm TL; (C) Lethrinus mahsena, 275 mm TL.

Figure 2

Map showing the sampling locations of three lethrinid species from the Red Sea coast of Yemen.
Map showing the sampling locations of three lethrinid species from the Red Sea coast of Yemen.

Figure 3

Otolith of (A) Lethrinus borbonicus, 230 mm TL; (B) Lethrinus lentjan, 227 mm TL; (C) Lethrinus mahsena, 281 mm TL.
Otolith of (A) Lethrinus borbonicus, 230 mm TL; (B) Lethrinus lentjan, 227 mm TL; (C) Lethrinus mahsena, 281 mm TL.

Squared coefficient of asymmetry (CV2a) value and character means (Xr+1) of three lethrinid fish species collected from the Red Sea coast of the Republic of Yemen_

Character CV2a N Character mean (mm) ± SD % of individuals with asymmetry
Lethrinus borbonicus
OL 53.54 49 8.39 ± 1.2 45
OW 55.47 49 7.40 ± 1.7 92
OWe 75.67 49 0.271 ± 2.1 76
Lethrinus letnjan
OL 54.78 72 10.9 ± 1.8 55
OW 58.55 72 7.89 ± 1.2 88
OWe 73.74 72 0.338 ± 1.6 65
Lethrinus mahsena
OL 51.77 54 7.9 ± 1.2 71
(OW 57.34 54 6.4 ± 1.3 89
OWe 71.65 54 0.230 ± 1.4 87

Squared coefficient of asymmetry and character means by size class of three lethrinid fish species collected from the Red Sea coast of the Republic of Yemen_

Character CV2a N Character mean (mm) ± SD % of individuals with asymmetry
Lethrinus borbonicus
OL
150–200 32.42 10 8.49 ± 1.5 43
201–250 32.87 15 8.55 ± 1.7 44
251–300 33.41 15 7.98 ± 2.1 54
301–350 33.98 5 8.58 ± 2.5 61
351–400 34.12 4 8.72 ± 2.4 65
OW
150–200 65.59 10 7.73 ± 1.6 89
201–250 65.99 15 7.53 ± 1.5 90
251–300 66.42 15 7.87 ± 2.2 87
301–350 67.53 5 7.96 ± 2.1 86
351–400 68.87 4 7.64 ± 2.5 77
OWe
150–200 54.87 10 0.278 ± 2.1 73
201–250 54.89 15 0.276 ± 1.5 74
251–300 55.62 15 0.266 ± 1.3 70
301–350 56.21 5 0.256 ± 1.2 71
351–400 56.99 4 0.276 ± 1.5 73
Lethrinus letnjan
OL
160–210 53.78 12 11.1 ± 1.6 56
211–250 53.89 11 10.9 ± 1.7 59
251–300 54.11 11 10.2 ± 1.2 61
301–350 54.78 13 10.9 ± 1.5 62
351–400 55.61 10 10.6 ± 1.3 73
401–450 55.81 9 11.2 ± 1.1 74
451–500 56.43 6 10.5 ± 1.3 72
OW
160–210 77.35 12 7.59 ± 1.3 81
211–250 77.69 11 7.49 ± 1.1 80
251–300 78.65 11 7.39 ± 1.3 83
301–350 78.89 13 7.54 ± 1.2 77
351–400 79.21 10 7.64 ± 2.1 79
401–450 79.75 9 7.72 ± 2.5 82
451–500 79.99 6 7.62 ± 2.4 80
OWe
160–210 51.94 12 0.328 ± 1.3 66
211–250 52.22 11 0.321 ± 1.1 62
251–300 52.87 11 0.319 ± 1.4 69
301–350 53.55 13 0.324 ± 2.1 77
351–400 53.87 10 0.325 ± 2.4 72
401–450 54.44 9 0.322 ± 2.3 78
451–500 54.97 6 0.321 ± 2.1 79
Lethrinus mahsena
OL
160–210 30.87 9 7.4 ± 1.4 70
211–250 31.33 8 7.7 ± 1.1 72
251–300 31.87 7 7.5 ± 2.3 78
301–350 32.55 5 8.1 ± 2.1 79
351–400 32.89 5 7.8 ± 1.5 82
401–450 32.99 7 7.4 ± 1.1 84
451–500 33.76 7 7.8 ± 1.2 87
501–550 33.87 6 7.7 ± 1.1 89
OW
160–210 76.64 9 6.1 ± 1.1 78
211–250 76.99 8 6.3 ± 1.4 79
251–300 77.22 7 6.4 ± 1.1 81
301–350 77.83 5 6.1 ± 1.5 82
351–400 77.99 5 6.2 ± 2.1 84
401–450 78.21 7 6.4 ± 1.1 87
451–500 78.65 7 6.3 ± 1.4 88
501–550 78.99 6 6.4 ± 1.1 89
OWe
160–210 50.85 9 0.227 ± 1.3 83
211–250 50.99 8 0.229 ± 1.1 85
251–300 51.33 7 0.228 ± 2.1 87
301–350 51.78 5 0.230 ± 1.4 81
351–400 52.44 5 0.229 ± 1.1 89
401–450 52.65 7 0.227 ± 1.4 90
451–500 53.99 7 0.230 ± 1.4 83
501–550 54.43 6 0.229 ± 1.1 87
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