Sex difference in fatty acid composition of six marine teleosts

Zhang, Feiran; Bi, Qingzhu; Ma, Qiang; Wei, Yuliang; Liang, Mengqing; Xu, Houguo

doi:10.1111/jfb.15220

Cited by 2 publications

(9 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Formula for calculating the hepatosomatic index: HSI (%) = wet liver weight/fish body weight × 100 Formula for calculating the condition factor: CF = body weight/(body length 3 ) × 100 The inter-sex distance coefficient (D sex ) is used to indicate the difference in fatty acid composition between different sexes [19]. The D sex is calculated according to the following equation [12]:…”

Section: Calculations and Statistical Methodsmentioning

confidence: 99%

“…Besides, the multi-variate similarity of percentages analysis (SIMPER) was also used to analyze the fatty acid dissimilarities between sexes [12,20]. The fatty acid compositions were pretreated with Prime-E (Version 6.1.10, Plymouth Routines in Multivariate Ecological Research, Ivybridge, UK).…”

Section: Calculations and Statistical Methodsmentioning

confidence: 99%

“…Indeed, several studies have shown the selective deposition of fatty acids depending on sex, season and reproductive cycle [10][11][12][13][14]. The selective deposition of fatty acids in fish of specific sexes may reflect the specific fatty acid preference and utilization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sex Differences in Fatty Acid Composition of Chinese Tongue Sole (Cynoglossus semilaevis) Tissues

Liu,

Zhang,

et al. 2023

Fishes

Self Cite

View full text Add to dashboard Cite

The fatty acid accumulation in fish tissues are closely related to fish sex, yet the sex differences in fish fatty acids have not been fully known. This experiment investigated the sex differences in fatty acid composition of Chinese tongue sole (Cynoglossus semilaevis), which have typical sexual dimorphism and reversal. Three sexes, namely females, males and pseudomales, were involved in this study. Five batches of fish samples were collected from different fish farms in Shandong Province, China. These fish were identified to be at the gonadal development stage of III–IV. The disparity of fatty acid between sexes (female vs male and pseudomale vs. male) was evaluated by the distance coefficient (Dsex) and multi-variate similarity of percentages analysis (SIMPER). The highest Dsex values between females and males were found in gonad, followed by liver and eye. The fatty acids that differed between females and males were mainly DHA, 16:1n-7, 18:1n-9, and 18:0. The sex difference in DHA and 18:1n-9 contributed significantly to the overall sex difference in fatty acid of brain, eye, and gonad, whereas that in 16:1n-7 contributed significantly in heart, gill, liver, and muscle. The sex difference in 18:0 contributed significantly to the overall sex difference in fatty acid of heart, gill, gut, and skin. The sex differences in fatty acid between pseudomales and males were generally insignificant. In conclusion, at this gonadal development stage (III–IV), the sex differences in fatty acid between female and male Chinese tongue sole have emerged, mainly in the gonad. The testes had higher DHA levels but lower levels of 16:1n-7 and 18:1n-9 than ovaries. In addition, for pseudomales, the phenotypic sex more substantially determined the fatty acid composition than the genetic sex.

show abstract

Section: Calculations and Statistical Methodsmentioning

confidence: 99%

Section: Calculations and Statistical Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Sex Differences in Fatty Acid Composition of Chinese Tongue Sole (Cynoglossus semilaevis) Tissues

Liu,

Zhang,

et al. 2023

Fishes

Self Cite

View full text Add to dashboard Cite

show abstract

“…While seahorses are usually consumed whole (muscle, viscera, bones and skin), the present study only analyzed the FA profile of trunk muscle. Muscle is an important lipid storage tissue in fish (Jobling et al, 1998) and while the FA profile of trunk muscle does not reflect the full FA pool of seahorses, it displays a more stable profile than that of gonads (e.g., ovaries) and reserve organs (e.g., liver) which are more susceptible to short-term shifts promoted by diet and abiotic factors (Planas et al, 2020;Zhang et al, 2022). Therefore, when aiming to perform intraspecific comparisons (e.g., male vs. female specimens), a more stable biological matrix will be less prone to bias in the pool of FA promoted by diet or different stages of sexual maturation (Zhang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Muscle is an important lipid storage tissue in fish (Jobling et al, 1998) and while the FA profile of trunk muscle does not reflect the full FA pool of seahorses, it displays a more stable profile than that of gonads (e.g., ovaries) and reserve organs (e.g., liver) which are more susceptible to short-term shifts promoted by diet and abiotic factors (Planas et al, 2020;Zhang et al, 2022). Therefore, when aiming to perform intraspecific comparisons (e.g., male vs. female specimens), a more stable biological matrix will be less prone to bias in the pool of FA promoted by diet or different stages of sexual maturation (Zhang et al, 2022). The FA profiles of cultured short-snout seahorse's trunk muscles are compared, from a nutritional point of view, to those of the whole-body of other cultured Hippocampus species described in the literature, acknowledging that the pool of FA of H. hippocampus is only partly represented by trunk muscle.…”

Section: Introductionmentioning

confidence: 99%

Fatty acid profiles of cultured Hippocampus hippocampus trunk muscles and potential nutritional value

et al. 2023

View full text Add to dashboard Cite

Syngnathids (seahorses, pipefishes and seadragons) are an attractive resource for Traditional Chinese Medicine (TCM). Despite few scientific studies supporting seahorse nutritional benefits, they are believed to possess medicinal properties that enhance human health. The European short-snout seahorse Hippocampus hippocampus is classified as Data Deficient by the IUCN Red List of Threatened Species. Nevertheless, there are increasing records of this species being illegally captured and traded to supply TCM. This study investigated the fatty acid (FA) profiles of the trunk muscles of cultured female and male H. hippocampus, to assess sex and intraspecific variation, as well as their potential nutritional value. The contents of crude lipid (4.05 ± 2.15% dry weight, DW in females and 2.82 ± 1.48% DW in males) and phospholipid (8.23 ± 3.34 μg mg−1 DW in females and 7.91 ± 2.36 μg mg−1 DW in males) were not significantly different between the two sexes. The absolute FA compositions of H. hippocampus trunk muscles revealed higher mean values for FA 16:0, 18:0, 18:1 n-9 and 22:6 n-3 (DHA), in both female (2.82 ± 1.11, 1.81 ± 0.89, 0.90 ± 0.41 and 0.93 ± 0.35 μg mg−1 DW, respectively) and male specimens (1.99 ± 0.95, 1.52 ± 0.78, 0.74 ± 0.44 and 0.80 ± 0.41 μg mg−1 DW, respectively). In terms of FA classes, saturated fatty acids (SFA) showed the highest absolute value of the total pool of FA, for both sexes (4.73 ± 1.94 μg mg−1 DW in females and 3.58 ± 1.76 μg mg−1 DW in males). Males tended to exhibit a more suitable profile for human nutrition, displaying a lower atherogenic index (AI) and thrombogenic index (TI). The relative composition of H. hippocampus trunk muscles followed the patterns of seahorse species valued in TCM, with DHA ranking amongst the PUFA with higher mean relative abundances (12.0% of total FA). While seahorse FA profiles may be of interest in terms of their nutritional value for humans, only specimens originating from sustainable production practices should be traded and the conservation of their populations in the wild should continue to be a global priority.

show abstract

Sex difference in fatty acid composition of six marine teleosts

Cited by 2 publications

References 31 publications

Sex Differences in Fatty Acid Composition of Chinese Tongue Sole (Cynoglossus semilaevis) Tissues

Sex Differences in Fatty Acid Composition of Chinese Tongue Sole (Cynoglossus semilaevis) Tissues

Fatty acid profiles of cultured Hippocampus hippocampus trunk muscles and potential nutritional value

Contact Info

Product

Resources

About