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Gasparini C, Iori S, Pietropoli E, Bonato M, Giantin M, Barbarossa A, Bardhi A, Pilastro A, Dacasto M, Pauletto M. Sub-acute exposure of male guppies (Poecilia reticulata) to environmentally relevant concentrations of PFOA and GenX induces significant changes in the testis transcriptome and reproductive traits. ENVIRONMENT INTERNATIONAL 2024; 187:108703. [PMID: 38705092 DOI: 10.1016/j.envint.2024.108703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
Poly- and perfluoroalkyl substances (PFAS) are frequently detected in the environment and are linked to adverse reproductive health outcomes in humans. Although legacy PFAS have been phased out due to their toxicity, alternative PFAS are increasingly used despite the fact that information on their toxic effects on reproductive traits is particularly scarce. Here, we exposed male guppies (Poecilia reticulata) for a short period (21 days) to an environmentally realistic concentration (1 ppb) of PFOA, a legacy PFAS, and its replacement compound, GenX, to assess their impact on reproductive traits and gene expression. Exposure to PFAS did not impair survival but instead caused sublethal effects. Overall, PFAS exposure caused changes in male sexual behaviour and had detrimental effects on sperm motility. Sublethal variations were also seen at the transcriptional level, with the modulation of genes involved in immune regulation, spermatogenesis, and oxidative stress. We also observed bioaccumulation of PFAS, which was higher for PFOA than for GenX. Our results offer a comprehensive comparison of these two PFAS and shed light on the toxicity of a newly emerging alternative to legacy PFAS. It is therefore evident that even at low concentrations and with short exposure, PFAS can have subtle yet significant effects on behaviour, fertility, and immunity. These findings underscore the potential ramifications of pollution under natural conditions and their impact on fish populations.
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Affiliation(s)
- C Gasparini
- Department of Biology, University of Padova, Via U. Bassi 58/B, I-35131, Padova, Italy; National Biodiversity Future Center, Piazza Marina 61, I-90133 Palermo, Italy
| | - S Iori
- Department of Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, I-35020 Agripolis Legnaro (Padova), Italy
| | - E Pietropoli
- Department of Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, I-35020 Agripolis Legnaro (Padova), Italy
| | - M Bonato
- Department of Biology, University of Padova, Via U. Bassi 58/B, I-35131, Padova, Italy
| | - M Giantin
- Department of Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, I-35020 Agripolis Legnaro (Padova), Italy
| | - A Barbarossa
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, via Tolara di Sopra 50, I-40064 Ozzano dell'Emilia (Bologna), Italy; Health Sciences and Technologies-Interdepartmental Centre for Industrial Research (CIRI-SDV), Alma Mater Studiorum University of Bologna, I-40064 Ozzano dell'Emilia (Bologna), Italy
| | - A Bardhi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, via Tolara di Sopra 50, I-40064 Ozzano dell'Emilia (Bologna), Italy
| | - A Pilastro
- Department of Biology, University of Padova, Via U. Bassi 58/B, I-35131, Padova, Italy; National Biodiversity Future Center, Piazza Marina 61, I-90133 Palermo, Italy
| | - M Dacasto
- Department of Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, I-35020 Agripolis Legnaro (Padova), Italy
| | - M Pauletto
- Department of Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, I-35020 Agripolis Legnaro (Padova), Italy.
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Lyu L, Yao Y, Xie S, Wang X, Wen H, Li Y, Li J, Zuo C, Yan S, Dong J, Qi X. Mating behaviors in ovoviviparous black rockfish ( Sebastes schlegelii): molecular function of prostaglandin E2 as both a hormone and pheromone. MARINE LIFE SCIENCE & TECHNOLOGY 2024; 6:15-30. [PMID: 38433961 PMCID: PMC10902245 DOI: 10.1007/s42995-023-00214-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 12/08/2023] [Indexed: 03/05/2024]
Abstract
Prostaglandins (PGs) are profound hormones in teleost sexual behavior, especially in mating. PGs act as pheromones that affect the olfactory sensory neurons of males, inducing the initiation of a series of mating behaviors. However, the molecular mechanism by which PGs trigger mating behavior in ovoviviparous teleosts is still unclear. In the present study, we employed the ovoviviparous black rockfish (Sebastes schlegelii), an economically important marine species whose reproductive production is limited by incomplete fertilization, as a model species. The results showed that when the dose of PGE2 was higher than 10 nmol/L, a significant (P < 0.05) increase in mating behaviors was observed. Dual-fluorescence in situ hybridization indicated that PGE2 could fire specific neurons in different brain regions and receptor cells in the olfactory sac. After combining with specific neurons in the central nervous system (CNS), a series of genes related to reproduction are activated. The intracerebroventricular administration of PGE2 significantly increased lhb levels (P < 0.05) in both sexes. Moreover, steroidogenesis in gonads was also affected, inducing an increase (P < 0.05) in E2 levels in males and T levels in females. PGE2 levels were also increased significantly (P < 0.05) in both sexes. The present study revealed that PGE2 can activate mating behavior in black rockfish in both hormone and pheromone pathways, leading to variations in sex steroid levels and activation of reproductive behaviors. Our results provide not only novel insight into the onset of mating behaviors in ovoviviparous teleosts but also solutions for the incomplete fertilization caused by natural mating in cage aquaculture. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00214-w.
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Affiliation(s)
- Likang Lyu
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Yijia Yao
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Songyang Xie
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Xiaojie Wang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Haishen Wen
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Yun Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Jianshuang Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Chenpeng Zuo
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Shaojing Yan
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
| | - Jingyi Dong
- Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
| | - Xin Qi
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, 266003 China
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Sundaray JK, Dixit S, Rather A, Rasal KD, Sahoo L. Aquaculture omics: An update on the current status of research and data analysis. Mar Genomics 2022; 64:100967. [PMID: 35779450 DOI: 10.1016/j.margen.2022.100967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 05/26/2022] [Accepted: 06/15/2022] [Indexed: 11/28/2022]
Abstract
Aquaculture is the fast-growing agricultural sector and has the ability to meet the growing demand for protein nutritional security for future population. In future aquaculture is going to be the major source of fish proteins as capture fisheries reached at its maximum. However, several challenges need to overcome such as lack of genetically improved strains/varieties, lack of species-specific feed/functional feed, round the year availability of quality fish seed, pollution of ecosystems and increased frequencies of disease occurrence etc. In recent years, the continuous development of high throughput sequencing technology has revolutionized the biological sciences and provided necessary tools. Application of 'omics' in aquaculture research have been successfully used to resolve several productive and reproductive issues and thus ensure its sustainability and profitability. To date, high quality draft genomes of over fifty fish species have been generated and successfully used to develop large number of single nucleotide polymorphism markers (SNPs), marker panels and other genomic resources etc in several aquaculture species. Similarly, transcriptome profiling and miRNAs analysis have been used in aquaculture research to identify key transcripts and expression analysis of candidate genes/miRNAs involved in reproduction, immunity, growth, development, stress toxicology and disease. Metagenome analysis emerged as a promising scientific tool to analyze the complex genomes contained within microbial communities. Metagenomics has been successfully used in the aquaculture sector to identify novel and potential pathogens, antibiotic resistance genes, microbial roles in microcosms, microbial communities forming biofloc, probiotics etc. In the current review, we discussed application of high-throughput technologies (NGS) in the aquaculture sector.
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Affiliation(s)
- Jitendra Kumar Sundaray
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751002, Odisha, India
| | - Sangita Dixit
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar 751003, Odisha, India
| | - Ashraf Rather
- Division of Fish Genetics and Biotechnology, College of Fisheries, Sher-e- Kashmir University of Agricultural Science and Technology, Rangil-Ganderbal 190006, Jammu and Kashmir, India
| | - Kiran D Rasal
- Fish Genetics and Biotechnology Division, ICAR-Central Institute of Fisheries Education, Versova, Mumbai 400 061, Maharastra, India
| | - Lakshman Sahoo
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751002, Odisha, India.
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Li X, Wang J, Ba W, Zhang S, Lin Z, Gao M, Tian H, Ru S. Mechanistic revealing of reproductive behavior impairment in male guppy (Poecilia reticulata) induced by environmentally realistic 2,2'-dithiobis-pyridine exposure. CHEMOSPHERE 2022; 286:131839. [PMID: 34403901 DOI: 10.1016/j.chemosphere.2021.131839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/27/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Although (PS)2, the primary degradation product of emerging antifouling biocides metal pyrithiones (MePTs), can disrupt the reproductive behavior of fish at an environmentally relevant ng/L level, the underlying mechanism is still largely unknown. This study exposed sexually mature male guppy (Poecilia reticulata) to 20, 200, and 2000 ng/L (PS)2 to explore the compromised effect of (PS)2 on reproductive behavior through a realistic competing scenario. The results showed that (PS)2 suppressed male guppies' sexual interest to stimulus females, reduced their competitive behavior frequencies toward rival males, and decreased their mating time and frequency. (PS)2 exposure did not affect male guppies' secondary sexual characteristics or induce estrogenic activity. Whole-brain transcriptome sequencing identified 1070 differentially expressed genes (DEGs) with 872 up-regulated genes, which were functionally enriched into Gene Ontology terms pertaining to extracellular matrix (ECM) and extracellular region. KEGG enrichment for the DEGs uncovered that the activations of ECM-receptor interaction and focal adhesion pathways could be the underlying molecular mechanism implicated in the (PS)2 induced reproductive behavior impairment. This work would deliver a substantial contribution to the understanding of the ecological safety of MePTs biocides.
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Affiliation(s)
- Xuefu Li
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China
| | - Jun Wang
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China
| | - Wanyu Ba
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China
| | - Suqiu Zhang
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China
| | - Zhenxian Lin
- School of Biology and Brewing Engineering, Taishan University, 525 Dongyue Street, Tai'an, 271000, Shandong province, China
| | - Ming Gao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, Jiangsu province, China
| | - Hua Tian
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China.
| | - Shaoguo Ru
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong province, China
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Li X, Ru S, Tian H, Zhang S, Lin Z, Gao M, Wang J. Combined exposure to environmentally relevant copper and 2,2'-dithiobis-pyridine induces significant reproductive toxicity in male guppy (Poecilia reticulata). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 797:149131. [PMID: 34346372 DOI: 10.1016/j.scitotenv.2021.149131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
Metal pyrithiones (MePTs), the most widely used biocides in antifouling paints (AFs) coated on the hulls, are usually used in combination with Cu-containing substances. In the aquatic environment, 2,2'-dithiobis-pyridine ((PS)2), the main degradation product of MePTs, and Cu usually coexist. However, their combined impacts on aquatic organisms are unclear. This study exposed male guppy (Poecilia reticulata) to an environmentally realistic concentration of Cu (10 μg/L) alone or Cu (10 μg/L) combined with 20, 200, and 2000 ng/L (PS)2 to explore their combined reproductive toxicity. The results showed that co-exposure to Cu and (PS)2 increased Cu accumulation in the fish body in a dose-dependent manner and induced obvious spermatozoon apoptosis and necrosis, which was mediated by the peroxidation and caspase activation. Compared to Cu alone, co-exposure to Cu and 200, 2000 ng/L (PS)2 significantly decreased the testosterone level and collapsed spermatogenesis, and depressed male's sexual interest and mating behavior were observed in three co-exposure groups. Moreover, co-exposure to Cu and (PS)2 increased the disturbance on cyp19a and cyp19b transcription and suppressed the "display" reproductive behavior. Eventually, co-exposure to Cu and (PS)2 caused male reproductive failure. Therefore, the concurrence of Cu and (PS)2 induced significant reproductive toxicity in male guppies and would threaten the sustainability of fish populations. Considering the extensive usage of MePTs products in the AFs, their ecological risk warrants more evaluation.
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Affiliation(s)
- Xuefu Li
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Shaoguo Ru
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Hua Tian
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Suqiu Zhang
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Zhenxian Lin
- School of Biology and Brewing Engineering, Taishan University, 525 Dongyue Street, Tai'an 271000, Shandong Province, China
| | - Ming Gao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu Province, China
| | - Jun Wang
- Colleges of Marine Life Sciences, Ocean University of China, Qingdao 266003, Shandong Province, China.
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