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Synthesis and properties of pentabutyryl glucose ester and its effects on the growth, liver and intestinal health, and gut microbiota of zebrafish (Danio rerio) 五丁基葡萄糖酯的合成、性质及其对斑马鱼生长、肝脏和肠道健康及肠道菌群的影响
IF 4.4
Water Biology and Security Pub Date : 2025-03-19 DOI: 10.1016/j.watbs.2025.100387
Yanqing Li , Yulian Zeng , Daojun Li , Lijuan Yu , Qianwen Ding , Yalin Yang , Chao Ran , Yuanyuan Yao , Rolf Erik Olsen , Einar Ringø , Jihong Liu Clarke , Zhen Zhang , Zhigang Zhou
{"title":"Synthesis and properties of pentabutyryl glucose ester and its effects on the growth, liver and intestinal health, and gut microbiota of zebrafish (Danio rerio)","authors":"Yanqing Li ,&nbsp;Yulian Zeng ,&nbsp;Daojun Li ,&nbsp;Lijuan Yu ,&nbsp;Qianwen Ding ,&nbsp;Yalin Yang ,&nbsp;Chao Ran ,&nbsp;Yuanyuan Yao ,&nbsp;Rolf Erik Olsen ,&nbsp;Einar Ringø ,&nbsp;Jihong Liu Clarke ,&nbsp;Zhen Zhang ,&nbsp;Zhigang Zhou","doi":"10.1016/j.watbs.2025.100387","DOIUrl":"10.1016/j.watbs.2025.100387","url":null,"abstract":"<div><div>Butyric acid and its derivatives are widely applied in aquaculture as an alternative to antibiotics, which are beneficial for the growth and health of aquatic animals. However, these products have some disadvantages including poor stability, a bitter taste, and low bioavailability. In this study, a novel butyric acid, namely pentabutyryl glucose ester (PGE), was synthesized, and the effects of PGE on the growth, liver and intestinal health, and gut microbiota of zebrafish were evaluated. We found that the supplementation of PGE at a level of 0.05% promoted the growth performance of zebrafish, decreased the level of serum LPS, ALT, and AST, and improved liver health. The expression levels of pro-inflammatory factors (<em>NF-κB</em> <span><math><mrow><mi>p</mi><mn>65</mn></mrow></math></span> and <em>IL-6</em>) were notably downregulated, while those of anti-inflammatory factors (<em>TGF-β</em> and <em>IL-10</em>) were upregulated, in the intestines of zebrafish fed 0.05% PGE compared with the control group. Additionally, inclusion of PGE in the diet of zebrafish increased the relative abundance of probiotic bacteria such as <em>Bacillus</em> and <em>Lentilactobacillus</em>. Overall, this study demonstrated that PGE is beneficial for the growth, liver and intestinal health, and the gut microbiota of zebrafish, providing a novel pathway to improve the application of butyric acid as a feed additive in aquaculture.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100387"},"PeriodicalIF":4.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Family evolution and functional divergence of bony fish-specific Gig1 homologs 硬骨鱼特异性Gig1同源物的家族进化和功能分化
IF 4.4
Water Biology and Security Pub Date : 2025-03-12 DOI: 10.1016/j.watbs.2025.100382
Li-Li An , Xiu-Ying Gong , Cheng Dan , Hao-Yu Sun , Wen-Hao Guo , Hong-Yu Luan , Meng-Yao Wu , Ji-Cheng Yu , Yi-Bing Zhang
{"title":"Family evolution and functional divergence of bony fish-specific Gig1 homologs","authors":"Li-Li An ,&nbsp;Xiu-Ying Gong ,&nbsp;Cheng Dan ,&nbsp;Hao-Yu Sun ,&nbsp;Wen-Hao Guo ,&nbsp;Hong-Yu Luan ,&nbsp;Meng-Yao Wu ,&nbsp;Ji-Cheng Yu ,&nbsp;Yi-Bing Zhang","doi":"10.1016/j.watbs.2025.100382","DOIUrl":"10.1016/j.watbs.2025.100382","url":null,"abstract":"<div><div>Grass carp reovirus (GCRV)-induced gene 1 (Gig1) is identified initially in crucian carp <em>C. auratus</em> as a novel interferon-stimulated gene (ISG) encoding an antiviral protein and subsequently as the founder member of Gig1 gene family. However, the evolution and function of Gig1 family members remain largely unknown. In this study, genome-wide searchs of 100 vertebrate species representing the main taxonomic lineages revealed that the Gig1 family originated from a common ancestor of bony fish but was completely lost in tetrapods. The Gig1 family is divided into three subfamilies, each with its own characteristics in gain and loss. Compared to subfamily I that originated the earliest and showed no significant change in gene copies, subfamilies II and III were expanded robustly with teleost radiation. Despite no known domains having been identified, motif prediction revealed a conserved motif arrangement in all Gig1 family proteins. Functionally, both zebrafish and grass carp have subfamilies I and II but not subfamily III. However, only certain subfamily II genes were highly induced by viral infection and thus capable of inhibiting viral replication by overexpression and knockout assays. The Japanese rice fish medaka has no subfamily II and, strikingly, one subfamily III gene acquired antiviral feature. Site-directed mutation showed that three leucine residues conserved in the motif 1 were essential for the antiviral role of subfamily II genes in zebrafish. In summary, our results indicate that bony fish-specific Gig1 gene family has been undergoing diversification in expression and function toward virus infection in a given species.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100382"},"PeriodicalIF":4.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From primary to secondary invasions: Strategies to mitigate the invasion risk of pikeperch 从初生入侵到次生入侵:降低猪鲈入侵风险的策略
IF 4.4
Water Biology and Security Pub Date : 2025-03-11 DOI: 10.1016/j.watbs.2025.100380
Xin Wang , Zhili Pan , Yahui Zhao
{"title":"From primary to secondary invasions: Strategies to mitigate the invasion risk of pikeperch","authors":"Xin Wang ,&nbsp;Zhili Pan ,&nbsp;Yahui Zhao","doi":"10.1016/j.watbs.2025.100380","DOIUrl":"10.1016/j.watbs.2025.100380","url":null,"abstract":"<div><div>Aquaculture, as a major source of protein in the food industry, heavily relies on the introduction and farming of non-native species. Pikeperch, <em>Sander lucioperca</em>, an important fish in aquaculture, poses a threat to the survival of native species because it is a piscivore and has been introduced globally. To address this issue, we examined the niche dynamics of invasive populations by comparing the climatic niches of native and invasive populations of Pikeperch. Predictive models based on global occurrence data were used to assess the distribution areas of native and invasive populations, and the model results were converted into area measurements to estimate the potential invasion risk of pikeperch. The results show that invasive populations, especially those in Asia, occupy broader climatic niches. The main difference is that, compared to native-range populations, non-natives occupy warmer and more humid regions. These climatic differences have led to niche expansion by invasive populations, with invasive populations (particularly in Asia) showing a greater potential for invasion. we applied niche modeling to evaluate the potential invasion risks associated with introducing different geographic populations. Our models provide a scientific basis for managing aquaculture introductions, aiming to reduce invasion risks and minimiz both ecological and economic impacts.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100380"},"PeriodicalIF":4.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seasonal variation and driving factors of beta diversity of macroinvertebrate assemblages in subtropical Chinese high-mountain streams 中国亚热带高山溪流大型无脊椎动物群落β多样性的季节变化及其驱动因素
IF 4.4
Water Biology and Security Pub Date : 2025-03-10 DOI: 10.1016/j.watbs.2025.100379
Chenghui Wei , Hongtao Li , Jani Heino , Xiaoming Jiang
{"title":"Seasonal variation and driving factors of beta diversity of macroinvertebrate assemblages in subtropical Chinese high-mountain streams","authors":"Chenghui Wei ,&nbsp;Hongtao Li ,&nbsp;Jani Heino ,&nbsp;Xiaoming Jiang","doi":"10.1016/j.watbs.2025.100379","DOIUrl":"10.1016/j.watbs.2025.100379","url":null,"abstract":"<div><div>High-mountain stream ecosystems are recognized as ideal arenas for natural experiments and for ecological monitoring and assessment research, owing to their sensitivity to climate gradients and human-mediated disturbances. In this study, we chose a subtropical mountainous stream system in southwestern China, to explore the spatiotemporal patterns and driving factors of taxonomic, phylogenetic, and functional beta diversity of macroinvertebrate assemblages. We found that taxonomic beta diversity was highest (on average, 0.577 in spring and 0.645 in autumn) across seasons, followed by phylogenetic (0.491 and 0.545) and functional (0.350 and 0.383) beta diversity, with the replacement component predominantly (57%–73%) contributing to all three facets of diversity. The taxonomic local contributions to beta diversity (LCBD) values were roughly equivalent among different sites in both spring and autumn, whereas phylogenetic LCBD (PLCBD) and functional LCBD (XLCBD) indices varied from site to site. Therefore, we recommend prioritizing site conservation based on LCBD, PLCBD, and XLCBD values to optimize biodiversity conservation strategies. The three-facets of dissimilarities were all somewhat higher in autumn than spring, possibly due to recolonization events in the metacommunity after the summer flood. Variation partitioning analysis indicated that environmental factors were more important than spatial factors in structuring all three facets of beta diversity and their components, although different sets of variables were identified as important for different diversity facets and between seasons. In summary, our study offers valuable insights into the patterns and drivers of macroinvertebrate beta diversity in high mountain streams and lays a baseline for targeted conservation strategies in these ecosystems.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100379"},"PeriodicalIF":4.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biologging as a potential platform for resolving ocean environmental issues and threats: Towards the development of the Internet of Animals 生物学作为解决海洋环境问题和威胁的潜在平台:迈向动物互联网的发展
IF 4.4
Water Biology and Security Pub Date : 2025-03-07 DOI: 10.1016/j.watbs.2025.100383
Takashi Iwata , Tomonari Akamatsu
{"title":"Biologging as a potential platform for resolving ocean environmental issues and threats: Towards the development of the Internet of Animals","authors":"Takashi Iwata ,&nbsp;Tomonari Akamatsu","doi":"10.1016/j.watbs.2025.100383","DOIUrl":"10.1016/j.watbs.2025.100383","url":null,"abstract":"<div><div>Biologging is a method that utilizes animal-borne devices to study the behavioural ecology, physiology, and surrounding environment of animals. This is the Lagrangian observation method, which assigns a coordinate system origin to each animal, making the biologging unique among observation platforms. This study reviews biologging as a new tool for understanding the ocean by combining other observation methods, and proposes strategies for applying biologging technology to address various marine issues through relevant policies. Attempts to resolve marine issues using biologging are described, including ocean warming, weather forecasting, marine debris, marine chemical pollution, anthropogenic noise, preservation of marine protected areas, bycatch from fisheries, and anthropogenic disturbance of habitats used by marine top predators. While biologging alone is insufficient to resolve marine issues, it can complement other Lagrangian platforms such as drifting buoys and Eulerian remote sensing, enhancing the predictive accuracy of models, and filling existing gaps in knowledge. The Internet of Animals (IoA), which is a derivative concept of the Internet of Things (IoT), will be a future solution that collects a range of data from inaccessible ocean from animals equipped with devices through a network, making open data access crucial. Conclusively, we present research examples and potential methods involving biologging that will guide the formulation of sustainable ocean management policies.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100383"},"PeriodicalIF":4.4,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Non-native aquatic species in the Dongting Lake basin, China 洞庭湖流域的外来水生物种
IF 4.4
Water Biology and Security Pub Date : 2025-02-26 DOI: 10.1016/j.watbs.2025.100378
Wen Xiong , Wei Zhang , Lu Cai , Peter A. Bowler , Chuanxin Chao , Baoqiang Wang
{"title":"Non-native aquatic species in the Dongting Lake basin, China","authors":"Wen Xiong ,&nbsp;Wei Zhang ,&nbsp;Lu Cai ,&nbsp;Peter A. Bowler ,&nbsp;Chuanxin Chao ,&nbsp;Baoqiang Wang","doi":"10.1016/j.watbs.2025.100378","DOIUrl":"10.1016/j.watbs.2025.100378","url":null,"abstract":"<div><div>Dongting Lake is the second largest freshwater lake in China, supports high biodiversity and many endemic or endangered species, such as finless porpoise (<em>Neophocaena phocaenoides</em>), Baer's pochard (<em>Aythya baeri</em>), and east Asian minnow (<em>Ochetobius elongatus</em>), and is thus a global biodiversity hotspot. It is located within an important aquaculture and agricultural region, and many non-native species were introduced into the lake for aquaculture and the ornamental trade. However, information about these non-native species is scarce. We sampled the lake and updated a list of the lake's non-native species, reviewed their status, and threat to biodiversity, as well as their contribution to aquaculture and fisheries. A total of 157 non-native species, including 14 fishes, 136 vascular plants, 1 amphibian, 2 crustacea, 2 mollusca, and 2 reptile species have been imported into Dongting Lake. The main pathways of introduction are through the ornamental trade (97 species, 62%), followed by unintentional introductions (23 species, 15%), aquaculture (13 species, 8%), herbal medicine uses (8 species, 5%), forage grasses (7 species, 4%), food (5 species, 3%), timber (2 species, 1%) and biocontrol and oil (1 species each, 1% respectively). The non-native species origins are North America (43 species, 27%), South America (42 species, 27%), Asia (29 species, 18%), Europe (28 species, 18%), Africa (13 species, 8%), and Oceania (2 species, 1%). Some non-native species, such as red swamp crayfish (<em>Procambarus clarkii</em>), channel catfish (<em>Ictalurus punctatus</em>), and parrot's feather (<em>Myriophyllum aquaticum</em>), are valuable for aquaculture and horticulture. However, other non-native species, such as <em>Alternanthera philoxeroides</em>, <em>Pomacea canaliculate</em>, and <em>Trachemys scripta elegans,</em> pose a potential threat to local biodiversity, human health, and sustainable development. Better management and control of non-native species in Dongting Lake are needed.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100378"},"PeriodicalIF":4.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanism of low temperature-induced intestinal damage in Danio rerio and the mitigating effect of alanylglutamine 低温诱导小鼠肠道损伤的机制及丙氨酰谷氨酰胺的缓解作用
IF 4.4
Water Biology and Security Pub Date : 2025-02-25 DOI: 10.1016/j.watbs.2025.100377
Peng Chu , Yanfang Li , Xiaomen Han , Xiaojun Li , Yuxi Liu , Zhongxing Tang , Shaowu Yin , Tao Wang
{"title":"Mechanism of low temperature-induced intestinal damage in Danio rerio and the mitigating effect of alanylglutamine","authors":"Peng Chu ,&nbsp;Yanfang Li ,&nbsp;Xiaomen Han ,&nbsp;Xiaojun Li ,&nbsp;Yuxi Liu ,&nbsp;Zhongxing Tang ,&nbsp;Shaowu Yin ,&nbsp;Tao Wang","doi":"10.1016/j.watbs.2025.100377","DOIUrl":"10.1016/j.watbs.2025.100377","url":null,"abstract":"<div><div>Recent cold waves and abrupt seasonal temperature drops have significantly impacted aquaculture, slowing fish growth and causing mass mortality. The intestine plays a crucial role in digestion, nutrient absorption, metabolism, and physiological regulation. However, studies on the molecular mechanisms of fish intestinal response to low-temperature stress and methods to mitigate damage are limited. This study investigated the intestinal response of <em>Danio rerio</em> to low temperatures with three groups: a control group at 28 ​°C (CT28), a cryogenic group at 18 ​°C (ST18), and an extreme cryogenic group at 10 ​°C (LT10), with time points of 0, 12, 24, and 48 ​h. Results showed significant structural changes in the 18 ​°C group, with inflammatory infiltration starting at 24 ​h. Damage worsened in the 10 ​°C group, showing severe inflammation. Tunel staining revealed increased cell apoptosis with lower temperatures and longer exposure, peaking at 10 ​°C and 48 ​h following exposure (<em>p</em> ​&lt; ​0.05). Alcian blue periodic acid-schiff stain revealed that lower temperatures promote an increase in the number of goblet cells. Metabolomics analysis compared intestinal metabolites between CT28 vs. ST18 and CT28 vs. LT10. Fifty-three metabolites were shared between the CT28_ST18 and CT28_LT10 groups in positive ion mode, and 16 in negative mode, with 22 and 9 metabolites showing linear changes. These 31 metabolites could serve as potential indicators for low-temperature stress in <em>D. rerio</em>. Specifically, eight metabolites from the lysophosphatidylcholine (LPC) group increased significantly, while antioxidant alanylglutamine (AGD) decreased. Supplementing the diet with 0.5% AGD reduced intestinal damage, and 1.0% AGD improved low-temperature tolerance. This study provides new insights into the molecular mechanisms of fish response to cold stress and lays the foundation for future research.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100377"},"PeriodicalIF":4.4,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mitigating methane emissions during nitrogen removal in constructed wetlands 减少人工湿地除氮过程中的甲烷排放
IF 4.4
Water Biology and Security Pub Date : 2025-02-22 DOI: 10.1016/j.watbs.2025.100375
Ziqian Li , Liping Hu , Chenjun Zeng , Liuling Ye , Huijian Yang , Lingwei Kong , Jun Wei , Wenqing Shi
{"title":"Mitigating methane emissions during nitrogen removal in constructed wetlands","authors":"Ziqian Li ,&nbsp;Liping Hu ,&nbsp;Chenjun Zeng ,&nbsp;Liuling Ye ,&nbsp;Huijian Yang ,&nbsp;Lingwei Kong ,&nbsp;Jun Wei ,&nbsp;Wenqing Shi","doi":"10.1016/j.watbs.2025.100375","DOIUrl":"10.1016/j.watbs.2025.100375","url":null,"abstract":"<div><div>As nitrogen removal requires anaerobic conditions for denitrification, which facilitates the production of methane (CH<sub>4</sub>), a potent greenhouse gas, it is a challenge to achieve nitrogen removal with minimal CH<sub>4</sub> emissions in constructed wetlands (CWs). This study proposed a solution for mitigating CH<sub>4</sub> emissions while achieving nitrogen removal using porous fillers in CWs. We found that active denitrification occurred in the interior pores of these fillers in an oxygen-rich environment. The microbial analysis indicated that the internal pores of porous fillers created anaerobic habitats for denitrifiers as they had a higher <em>nos</em>Z/<em>amo</em>A ratio than on the surface. The anaerobic decomposition of organic matter was inhibited, yielding significantly lower CH<sub>4</sub>/CO<sub>2</sub> ratios (&lt;1.0 ​× ​10<sup>−5</sup>) than those of traditional CWs (0.07). The methanogen proliferation and CH<sub>4</sub> production efficiency also remained at low levels (&lt;1.1 ​× ​10<sup>−3</sup> and 0.045%, respectively), which was significantly lower than in traditional CWs (2.3 ​× ​10<sup>6</sup> and 38%, respectively). Overall, this study proposed a strategy for mitigating the greenhouse effect of carbon emissions from CWs in the future.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100375"},"PeriodicalIF":4.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Overlooked eDNA contamination in human-influenced ecosystems: a call to manage large-scale false positives in biodiversity assessments 在受人类影响的生态系统中被忽视的dna污染:呼吁管理生物多样性评估中的大规模误报
IF 4.4
Water Biology and Security Pub Date : 2025-02-20 DOI: 10.1016/j.watbs.2025.100374
Aibin Zhan
{"title":"Overlooked eDNA contamination in human-influenced ecosystems: a call to manage large-scale false positives in biodiversity assessments","authors":"Aibin Zhan","doi":"10.1016/j.watbs.2025.100374","DOIUrl":"10.1016/j.watbs.2025.100374","url":null,"abstract":"<div><div>The use of environmental DNA (eDNA) has significantly revolutionized studies in biodiversity science. A crucial innovation of eDNA-based biodiversity assessment is the ability to detect species through genetic materials released by organisms into their environments, without the need for direct observation or capture (i.e., organisms remain “unseen”). The fact that organisms remain “unseen” has many pros and cons, many of which have been largely recognized and technically addressed or managed. However, two recent studies have both highlighted another critical issue regarding eDNA-based biodiversity assessments: the prevalence of overlooked eDNA contamination originating from human activities, such as the release of treated wastewater into aquatic ecosystems. Such eDNA contamination derived from human activities can lead to significant false positive errors in eDNA-based biodiversity assessments, particularly in human-disturbed ecosystems such as urban and coastal environments. Here I discuss the causes and consequences of eDNA contamination, stressing that this widespread but often neglected issue can substantially affect both eDNA-based theoretical studies and applied biodiversity management. Additionally, I propose several potential technical solutions to minimize its negative impacts, including well-designed sampling strategies, a deeper understanding of eDNA persistence and its spread in local waterbodies, and the use of environmental RNA (eRNA). Given that eDNA contamination can significantly impact ecosystems such as urban and coastal environments where biodiversity provides essential ecosystem services, I call for precautionary approaches and technical efforts to mitigate false positives derived from eDNA contamination in biodiversity assessments in these ecosystems.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100374"},"PeriodicalIF":4.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distribution and abundance of large pelagic predatory bony fishes in the northwestern Pacific over a half-century 半个世纪以来西北太平洋大型远洋掠食性硬骨鱼的分布和丰度
IF 4.4
Water Biology and Security Pub Date : 2025-02-17 DOI: 10.1016/j.watbs.2025.100373
Alexei M. Orlov , Igor V. Volvenko
{"title":"Distribution and abundance of large pelagic predatory bony fishes in the northwestern Pacific over a half-century","authors":"Alexei M. Orlov ,&nbsp;Igor V. Volvenko","doi":"10.1016/j.watbs.2025.100373","DOIUrl":"10.1016/j.watbs.2025.100373","url":null,"abstract":"<div><div>Large pelagic predatory fishes play an important role in marine ecosystems, occupying the highest position in food webs and accumulating energy and organic matter produced by aquatic organisms of lower trophic levels. Among pelagic predatory fishes, more attention has been given to the sharks, tunas and billfishes inhabiting equatorial and tropical waters, whereas pelagic predatory fishes inhabiting subarctic and temperate waters have been much less studied. We analyzed long-term midwater trawl survey data to investigate changes in the spatial distribution, ranges, and catch rates of the three most abundant large predatory teleosts in the Russian and adjacent waters of the northwestern Pacific, namely, the North Pacific daggertooth <em>Anotopterus nikparini</em>, the longnose lancetfish <em>Alepisaurus ferox</em>, and the Pacific pomfret <em>Brama japonica</em>. The northernmost distributions of daggertooth, lancetfish, and pomfret were observed in summer, spring, and autumn, respectively. All three species were characterized by the greatest northwards occurrence in the 2000s. In the study area, their maximum frequency of occurrence was recorded during the summer, and they were most frequently caught in the 1980s (lancetfish and pomfret) and 1990s (daggertooth). The average catch rates of daggertooth and pomfret were highest in summer, whereas those of lancetfish were highest in winter. The highest average catch rates of daggertooth, lancetfish, and pomfret were recorded in the 2000s, 1990s, and 1980s, respectively. The maximum absolute catch rates of lancetfish were recorded in winter, whereas those of daggertooth and pomfret were recorded in spring and summer, respectively. The maximum absolute catch rates of daggertooth and pomfret were observed in the 1980s, whereas those of lancetfish were observed in the 1990s.</div></div>","PeriodicalId":101277,"journal":{"name":"Water Biology and Security","volume":"4 4","pages":"Article 100373"},"PeriodicalIF":4.4,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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