TY - JOUR TI - Examination of sex-related differences in intestinal and gonadal lipid metabolism in the sea cucumber Apostichopus japonicus AU - Zhang, Shuangyan AU - Ru, Xiaoshang AU - Zhang, Libin AU - Gonçalves, David AU - Yang, Hongsheng T2 - Aquaculture AB - Reproduction of the sea cucumber Apostichopus japonicus is critical for aquaculture production. Gonadal development is the basis of reproduction, and lipids, which are among the main nutrients required for gonadal development, directly affect reproduction. We investigated whether gonadal and intestinal lipid metabolism differed between male and female A. japonicus. Transcriptome analysis of the intestines of sexually mature male and female wild-caught individuals revealed differences in gene expression, with 27 and 39 genes being up-regulated in females and males, respectively. In particular, the expression of the fatty acid synthase gene was higher in males than in females. Metabolome analysis of the gonads identified 141 metabolites that were up-regulated and 175 metabolites that were down-regulated in the testes compared with the ovaries in the positive/negative mode of an LC-MS/MS analysis. A variety of polyunsaturated fatty acids were found at higher concentrations in the testes than in the ovaries. 16 s rDNA sequencing analysis showed that the composition and structure of the intestinal microbiota were similar between males and females. These results suggest that sex differences in intestinal metabolism of A. japonicus are not due to differences in the microbiota, and we speculate that gonadal metabolism may be related to intestinal morphology. This information might be useful in improving the reproductive efficiency of sea cucumbers in captivity. DA - 2023/01/15/ PY - 2023 DO - 10.1016/j.aquaculture.2022.738787 DP - ScienceDirect VL - 562 SP - 738787 J2 - Aquaculture LA - en SN - 0044-8486 UR - https://www.sciencedirect.com/science/article/pii/S0044848622009048 Y2 - 2023/04/11/10:01:48 KW - Gonads KW - Intestines KW - Lipid metabolism KW - Sea cucumber KW - Sex differences ER - TY - JOUR TI - A metamorphic devolatilization model for the genesis of the Baiyun gold deposit in the North China Craton: A novel Fe-S isotopes perspective AU - Liu, Shuaijie AU - Chen, Bin AU - Zheng, Jiahao AU - Wu, Yafei AU - Bao, Chuang AU - Zhao, Guochun T2 - Gondwana Research AB - The Mesozoic gold deposits in the North China Craton (NCC) were hosted by the Precambrian basement and Mesozoic intrusions. Thus, most researchers consider that these gold deposits were genetically linked to the Mesozoic intrusions. However, we suggest that a metamorphic devolatilization model provides an alternative based on a combined Fe and in-situ S isotopes study on auriferous pyrites from the Baiyun gold deposit in the NCC. The Triassic Baiyun gold deposit contains the quartz vein and altered rock ores that were developed in the Paleoproterozoic metavolcanic-sedimentary rocks (the Liaohe Group). Our in-situ S isotopic analyses show that pyrites from the quartz vein ores are characterized by negative δ34S values (-10.7 ∼ -5.5‰), while those from the altered rock ores have two distinct groups of δ34S values, one being positive (+13.5 ∼ +16.2‰) and the other negative (-10.6 ∼ -3.0‰). We suggest that pyrite grains with positive δ34S values should be relicts from the host rocks, because they show comparable δ34S values with those from the host rocks schists (+3.3 ∼ +16.1‰). Thus, only the negative δ34S values of pyrites in ores (-10.7 ∼ -3.0‰) and the Fe isotopes of the quartz vein ores (δ56Fe = +0.30 ∼ +0.48‰) can represent the isotopic characteristics of ore-forming fluids at Baiyun. Our study shows that the sulfur were probably from the pyritic volcanic-sedimentary sequences of the Liaohe Group, rather than from magmas. The calculated δ56Fe values of the ore-forming fluids (-0.78 ∼ -0.37‰; pyrite-fluid isotope fractionation) could be modelled in a metamorphic devolatilization model with Fe-species (pyrite&magnetite) of the Liaohe Group as sources. Therefore, our combined S- and Fe- isotope data indicate that the metamorphic devolatilization of the Liaohe Group could account for the genesis of the Baiyun gold deposit. DA - 2022/06/01/ PY - 2022 DO - 10.1016/j.gr.2022.01.003 DP - ScienceDirect VL - 106 SP - 126 EP - 141 J2 - Gondwana Research LA - en SN - 1342-937X ST - A metamorphic devolatilization model for the genesis of the Baiyun gold deposit in the North China Craton UR - https://www.sciencedirect.com/science/article/pii/S1342937X22000041 Y2 - 2023/04/11/13:17:30 KW - Baiyun gold deposit KW - Fe isotope KW - Metamorphic devolatilization model KW - Orogenic gold deposits KW - S isotope ER - TY - JOUR TI - Acculturative stress and coping among migrant workers: A global mixed-methods systematic review AU - Liem, Andrian AU - Renzaho, Andre M. N. AU - Hannam, Kevin AU - Lam, Agnes I. F. AU - Hall, Brian J. T2 - Applied Psychology: Health and Well-Being AB - No existing review has synthesized key questions about acculturation experiences among international migrant workers. This review aimed to explore (1) What are global migrant workers’ experiences with acculturation and acculturative stress? (2) What are acculturative stress coping strategies used by migrant workers? And (3) how effective are these strategies for migrant workers in assisting their acculturation in the host countries? Peer-reviewed and gray literature, without time limitation, were searched in six databases and included if the study: focused on acculturative stress and coping strategies; was conducted with international migrant workers; was published in English; and was empirical. Eleven studies met the inclusion criteria. Three-layered themes of acculturation process and acculturative stress were identified as: individual layer; work-related layer; and social layer. Three key coping strategies were identified: emotion-focused; problem-focused; and appraisal-focused. These coping strategies were used flexibly to increase coping effectiveness and evidence emerged that a particular type of acculturative stress might be solved more effectively by a specific coping strategy. Migrant workers faced numerous challenges in their acculturative process. Understanding this process and their coping strategies could be used in developing research and interventions to improve the well-being of migrant workers. DA - 2021/08// PY - 2021 DO - https://doi.org/10.1111/aphw.12271 VL - 13 IS - 3 SP - 491 EP - 517 LA - en SN - 1758-0854 ST - Acculturative stress and coping among migrant workers UR - https://iaap-journals.onlinelibrary.wiley.com/doi/abs/10.1111/aphw.12271 Y2 - 2021/04/07/01:27:52 KW - acculturation KW - cultural adaptation KW - global mental health KW - health disparities KW - healthcare access KW - migrant health ER -