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

Jawad, Laith A.; AL-Shwafi, Nabil A. A.

doi:10.26881/oahs-2025.1.09

Figures & Tables

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.

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

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	CV²_a	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	CV²_a	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

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

Figures & Tables

Figure 1

Figure 2

Figure 3

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_

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_

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