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All issues Volume 38 (2025) Aquat. Living Resour., 38 (2025) 20 Full HTML
Open Access

Table 3

The 24 FAs responsible for 80% of the dissimilarity between stations and sterols mean compositions (mean ± standard deviation), in % of total FAs and in % of total sterols, respectively, in the digestive gland of S. senilis and stable isotopes values of δ13C and δ15N (in ‰) in the abductor muscle of S. senilis at 4 stations and 2 seasons in the Sine Saloum estuary, Senegal.

Season Dry Monsoon Monsoon Monsoon Dry Monsoon
Station 1 1 2 3 4 4
N=28 N=28 N=30 N=30 N=30 N=29
δ15N 5.8 ± 0.3 6.5 ± 0.4 6.6 ± 0.4 8 ± 0.5 9.2 ± 0.4 8.5 ± 0.2
δ13C −20.2 ± 0.3 −19.6 ± 0.8 −20.4 ± 0.3 −20.8 ± 0.3 −18.8 ± 0.2 −19.2 ± 0.2
14:0 1.7 ± 0.4 1.6 ± 0.8 1.6 ± 0.9 2.8 ± 1.3 2.2 ± 0.9 3.5 ± 1.7
16:0 11.9 ± 1.0 12.1 ± 2.8 11.9 ± 2.6 16.5 ± 3.5 13.4 ± 2.4 18.2 ± 4.9
17:0 3.1 ± 0.2 3.0 ± 0.3 2.8 ± 0.2 2.4 ± 0.3 2.1 ± 0.2 2.3 ± 0.2
18:0 9.7 ± 0.6 9.9 ± 0.7 10.5 ± 0.4 10.5 ± 1.0 10.1 ± 0.7 11.1 ± 0.9
Total SFA 27 27.3 27.4 32.7 28.2 35.6
16:1n-7 1.5 ± 0.4 1.2 ± 0.4 1 ± 0.4 2.7 ± 0.7 2.4 ± 0.8 2.9 ± 0.9
18:1n-7 2.1 ± 0.3 1.6 ± 0.2 1.3 ± 0.2 2.2 ± 0.3 1.4 ± 0.2 2.1 ± 0.3
20:1n-11 3.5 ± 0.3 5.3 ± 0.8 5.1 ± 0.8 3.1 ± 0.7 2.7 ± 0.4 2.7 ± 0.7
22:1n-11 0.7 ± 0.3 0.7 ± 0.3 0.8 ± 0.3 0.6 ± 0.3 0.6 ± 0.3 0.4 ± 0.2
Total MUFA 12.4 13.4 13.1 13.7 11.7 12.6
18:2n-7 0.5 ± 0.1 0.7 ± 0.3 0.5 ± 0.2 0.3 ± 0.1 0.2 ± 0.1 0.2 ± 0.1
18:2n-6 2 ± 0.1 2.0 ± 0.3 2.3 ± 0.2 1.7 ± 0.2 1.9 ± 0.2 1.6 ± 0.2
18:4n-3 0.8 ± 0.1 0.5 ± 0.2 0.5 ± 0.2 0.7 ± 0.2 1.1 ± 0.3 0.7 ± 0.2
20:4n-6 1.1 ± 0.4 4.7 ± 0.7 5.3 ± 0.8 5.2 ± 1 5.5 ± 0.8 4.8 ± 1.4
20:5n-3 2.9 ± 0.4 2.1 ± 0.5 2 ± 0.4 6.6 ± 1.5 5.7 ± 0.9 6.6 ± 1.6
22:4n-6 0.6 ± 0.1 1 ± 0.2 1.3 ± 0.3 0.9 ± 0.2 1 ± 0.2 0.9 ± 0.3
22:5n-6 2.2 ± 0.3 2.6 ± 0.5 2.5 ± 0.7 1.3 ± 0.3 1.1 ± 0.1 1 ± 0.3
22:5n-3 0.8 ± 0.1 0.9 ± 0.6 0.9 ± 0.1 1.3 ± 0.2 1.5 ± 0.1 1.4 ± 0.2
22:6n-3 15.8 ± 1.3 10.1 ± 1.9 9.1 ± 1.1 7.5 ± 1.6 11.1 ± 0.8 7.7 ± 1.6
Total PUFA 11.9 16 16.1 19.1 18.6 18.2
TMTD 1.9 ± 0.3 1.1 ± 0.4 0.9 ± 0.4 1.4 ± 0.4 1.9 ± 0.4 1.7 ± 0.4
Anteiso 17:0 1.3 ± 0.3 1.3 ± 0.3 1.2 ± 0.2 0.8 ± 0.2 0.8 ± 0.1 0.7 ± 0.1
Iso 18:0 0.6 ± 0.1 0.6 ± 0.1 0.5 ± 0.1 0.2 ± 0 0.2 ± 0 0.2 ± 0
Total Branched 5.3 4.7 4 2.9 3.5 3.1
16:0 DMA 0.8 ± 0.2 1 ± 0.2 1.3 ± 0.3 1 ± 0.5 1.2 ± 0.3 0.7 ± 0.3
Anteiso 18:0 DMA 0.6 ± 0.1 0.9 ± 0.2 0.7 ± 0.1 0.3 ± 0.1 0.2 ± 0.1 0.2 ± 0.1
18:0 DMA 7.4 ± 0.7 8.8 ± 0.7 9.9 ± 1 8.8 ± 1.8 10.2 ± 1.5 8.2 ± 1.9
Total DMA 10 12 13.1 10.8 12.4 9.6
22:2i 3.9 ± 0.5 5.3 ± 0.8 6.3 ± 0.9 3.7 ± 0.8 4.7 ± 0.6 3.4 ± 0.7
22:2j 7 ± 0.6 7 ± 0.8 6.5 ± 0.7 6.5 ± 1 6.6 ± 0.8 6.4 ± 1
Total NMI 12 13.3 13.6 11 12 10.6
Lathosterol 2.3 ± 0.4 2.6 ± 0.7 1.9 ± 0.6 0.7 ± 0.2 1.2 ± 0.3 0.8 ± 0.3
Norcholesterol 1.6 ± 0.3 1.4 ± 0.4 1.2 ± 0.3 0.5 ± 0.1 1.1 ± 0.2 0.5 ± 0.1
Cholestanol 3.6 ± 0.5 2.7 ± 0.6 2.4 ± 0.4 2.7 ± 0.5 2.1 ± 0.4 2.6 ± 0.7
Desmosterol 1.6 ± 0.8 1.2 ± 0.5 0.9 ± 0.4 0.7 ± 0.3 0.8 ± 0.3 0.7 ± 0.4
Cholesterol 12.6 ± 1.3 10.9 ± 0.8 9.8 ± 0.8 8.4 ± 0.8 9 ± 0.8 7.9 ± 0.8
Brassicasterol 46 ± 2.1 52.4 ± 2.2 52.3 ± 2.1 51.4 ± 2.2 48.7 ± 2.4 57.1 ± 2.3
Lanosterol 17.1 ± 2.4 16.5 ± 1.5 17.3 ± 1.3 16.9 ± 1.1 18 ± 1 13.6 ± 1
Stigmasterol 1.2 ± 0.6 0.7 ± 0.5 0.7 ± 0.6 1.2 ± 0.5 0.8 ± 0.4 1.2 ± 0.3
Campesterol 6.8 ± 0.8 6.1 ± 1 7.8 ± 0.9 14 ± 1.5 14.7 ± 1.6 12.2 ± 1.3
Norcholestadienol 7.4 ± 1.5 5.6 ± 1 5.8 ± 1 3.6 ± 0.6 3.6 ± 0.7 3.5 ± 1

SFA, Saturated Fatty Acids; MUFA, Monounsaturated Fatty Acids; PUFA, Polyunsaturated Fatty Acids; DMA, Dimethyl Acetal Fatty Acids; NMI, Non-Methylene-Interrupted Fatty Acids.

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