Environmental Biology of Fishes最新文献_第5页

Effects of Carnosine Addition in Low-Fishmeal Feed on the Growth Performance, Muscle Antioxidant Capacity and Flesh Quality of Orange-Spotted Grouper (Epinephelus coioides) 低鱼粉饲料中添加肌肽对石斑鱼生长性能、肌肉抗氧化能力和肉质的影响

4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-11-18 DOI: 10.3390/fishes9110467

Dong Li, Weijun Chen, Yanxia Yin, Lulu Yang, Mingfan Chen, Yun‐Zhang Sun, Jidan Ye

{"title":"Effects of Carnosine Addition in Low-Fishmeal Feed on the Growth Performance, Muscle Antioxidant Capacity and Flesh Quality of Orange-Spotted Grouper (Epinephelus coioides)","authors":"Dong Li, Weijun Chen, Yanxia Yin, Lulu Yang, Mingfan Chen, Yun‐Zhang Sun, Jidan Ye","doi":"10.3390/fishes9110467","DOIUrl":"https://doi.org/10.3390/fishes9110467","url":null,"abstract":"Carnosine is a natural dipeptide made up of L-histidine and β-alanine which is rich in muscle tissues and has multiple physiological functions. The current research aimed to investigate the effects of varied carnosine concentrations in low-fishmeal feed on the growth, muscle antioxidant capacity and flesh quality of orange-spotted grouper. Carnosine was supplemented at doses of 0, 10, 20, 40, 80, 160, and 320 mg/kg in low-fishmeal feed. Seven groups with three tanks of fish (11.4 ± 0.1 g/fish) were allotted one of the diets during the 8-week feeding trial. The growth rate, body protein content, muscle activities of superoxide dismutase and catalase, and muscle adhesiveness showed positive linear response and/or an open upward parabola with increasing carnosine concentrations, with a peak at 160 mg/kg of carnosine. Feed utilization, serum total protein content, gut trypsin activity, muscle glutathione peroxidase, total antioxidant capacity, muscle hardness, gumminess, chewiness and resilience followed the same pattern as the growth rate, reaching a peak at 320 mg/kg of carnosine; while the opposite trend was observed, reaching a minimum at 320 mg/kg for muscle malondialdehyde and 160 mg/kg for muscle liquid and water loss. The results indicated that appropriate carnosine addition could improve growth performance, muscle antioxidant capacity and flesh quality of grouper. The suitable inclusion concentration was estimated to be 195.14 mg/kg to achieve the best percent weight gain.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 11","pages":"467-467"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Antibody Preparation, Protein Expression, and Function Analysis of Cyp19a1b in Ovarian Differentiation in a Natural Triploid Teleost Qi River Crucian Carp (Carassius auratus) 天然三倍体齐河鲫卵巢分化中Cyp19a1b的抗体制备、蛋白表达及功能分析

4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-10-31 DOI: 10.3390/fishes9110442

Yongjing Li, Yujiao Jin, Limin Wu, Xuejun Li

{"title":"Antibody Preparation, Protein Expression, and Function Analysis of Cyp19a1b in Ovarian Differentiation in a Natural Triploid Teleost Qi River Crucian Carp (Carassius auratus)","authors":"Yongjing Li, Yujiao Jin, Limin Wu, Xuejun Li","doi":"10.3390/fishes9110442","DOIUrl":"https://doi.org/10.3390/fishes9110442","url":null,"abstract":"Estrogen is an essential sex steroid that functions in numerous biological systems including female reproduction, neuroendocrine, vascular, skeletal, and immune systems. The synthesis of estrogen is controlled by the rate-limiting enzyme, which has been confirmed to exist in two different forms, named brain aromatase and ovary aromatase, and encoded by cyp19a1a and cyp19a1b respectively in teleosts. However, existing studies have primarily focused on the expression and function of cyp19a1b in the brain and cyp19a1a in the gonad, the roles of cyp19a1b in the female gonad of teleosts are largely unknown. In our previous study, we cloned the full length of the cyp19a1b gene from a natural triploid teleost Qi River crucian carp (Carassius auratus), andthe spatial and temporal expression patterns of cyp19a1b mRNA were detected. To further clarify the roles of cyp19a1b in the ovarian differentiation of Qi River crucian carp, we produced a polyclonal antibody of Cyp19a1b in this study. Western blotting results showed that Cyp19a1b was mainly expressed in the brain and then in the ovary, heart, liver, and muscle. During embryogenesis, Cyp19a1b was abundantly expressed in the neurula stage. Immunohistochemistry demonstrated that Cyp19a1b was expressed in the radioactive glial cells (RGCs) of the brain from 20 days after hatching (dah) and the somatic cells of the ovaries from 30 dah, the critical period of ovarian differentiation in Qi River crucian carp. With the treatment of letrozole, an inhibitor of the aromatase, the expression of Cyp19a1b was downregulated both in the brain and gonad. Our results suggested that Cyp19a1b might be involved in the development of the nervous system and also participate in the ovarian differentiation of Qi River crucian carp.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 11","pages":"442-442"},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2410-3888/9/11/442/pdf?version=1730355508","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Construction of a Growth Model and Screening of Growth-Related Genes for a Hybrid Puffer (Takifugu obscurus ♀ × Takifugu rubripes ♂) 杂交河豚（暗色河豚♀×红河河豚♂）生长模型的构建及生长相关基因的筛选

4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-10-06 DOI: 10.3390/fishes9100404

Chaoyu Wang, Yan Shi, Yuanye Gao, Shuo Shi, Mengmeng Wang, Yunlong Yao, Zhenlong Sun, Yaohui Wang, Zhe Zhao

{"title":"Construction of a Growth Model and Screening of Growth-Related Genes for a Hybrid Puffer (Takifugu obscurus ♀ × Takifugu rubripes ♂)","authors":"Chaoyu Wang, Yan Shi, Yuanye Gao, Shuo Shi, Mengmeng Wang, Yunlong Yao, Zhenlong Sun, Yaohui Wang, Zhe Zhao","doi":"10.3390/fishes9100404","DOIUrl":"https://doi.org/10.3390/fishes9100404","url":null,"abstract":"The obscure puffer (Takifugu obscurus) is a popular cultured species and accounts for around 50% of the total pufferfish production in China. A hybrid puffer was generated by crossing a female obscure puffer with a male tiger puffer (T. rubripes). Its growth model has not been developed and the genetic basis underlying its growth superiority has not yet been fully investigated. In this study, the growth model and morphological traits of the hybrid puffer were explored. The results indicated that the hybrid puffer exhibited a significant growth advantage compared to the obscure puffer. There were also significant differences in their morphological traits. We conducted genotyping-by-sequencing (GBS) on hybrid and obscure puffer groups, identifying 215,288 high-quality single nucleotide polymorphisms (SNPs) on 22 chromosomes. Subsequently, a total of 13 growth-related selection regions were identified via a combination of selection signatures and a genome-wide association study (GWAS); these regions were mainly located on chromosomes 10 and 22. Ultimately, the screened regions contained 13 growth-related genes, including itgav, ighv3-43, ighm, atp6v1b2, pld1, xmrk, inhba, dsp, dsg2, and dsc2, which regulate growth through a variety of pathways. Taken together, the growth models and candidate genes used in this study will aid our understanding of production characteristics and the genetic basis of growth rates. The hybrid will also be of great significance for the genome-assisted breeding of pufferfish in the future.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 10","pages":"404-404"},"PeriodicalIF":0.0,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2410-3888/9/10/404/pdf?version=1728213028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Spawning migration, sex-specific home ranges, and seasonal site fidelity in a lacustrine population of Bowfin (Amia ocellicauda) 湖沼中弓鳍鱼（Amia ocellicauda）种群的产卵迁移、特定性别的家园范围和季节性地点忠诚度

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-18 DOI: 10.1007/s10641-024-01585-4

James R. Jackson, Gregory R. Jacobs, Alexander W. Latzka, Tomomi Landsman, Brian P. Young, Amy R. McCune

{"title":"Spawning migration, sex-specific home ranges, and seasonal site fidelity in a lacustrine population of Bowfin (Amia ocellicauda)","authors":"James R. Jackson, Gregory R. Jacobs, Alexander W. Latzka, Tomomi Landsman, Brian P. Young, Amy R. McCune","doi":"10.1007/s10641-024-01585-4","DOIUrl":"https://doi.org/10.1007/s10641-024-01585-4","url":null,"abstract":"Bowfin, Amia spp., are broadly distributed freshwater fishes native to eastern North America. Male bowfin build nuptial nests in the spring and provide parental care for eggs and young. Spawning occurs in or near wetland habitats often associated with larger bodies of water, but the literature suggests wider distribution during the growing season, such that annual movements may structure population and community dynamics. However, bowfin movements and their ecological roles are poorly known. Over 3 years, using radio telemetry, we studied movement patterns and home range size of the bowfin, Amia ocellicauda, in Oneida Lake, a large inland lake in New York State. We found female bowfin tended to range more widely than males. Furthermore, within-year structure in movement data and seasonal step-changes in relocations suggest that most bowfin exhibited migration-like movements to and from a primary spawning area in northwest Oneida Lake. After spawning (and for males, after parental care), bowfin dispersed around the western half of the lake, with some fish traversing the full extent of our study area. Analysis of home range sizes revealed high variability in how widely individuals roamed, but there was a significant tendency for females to exhibit larger home ranges than males during the spring. During the summer, there was a tendency for individual bowfin of both sexes to inhabit the same area in successive years, though males appeared to exhibit site fidelity more often than females. These data provide a new perspective on the movement ecology of bowfin.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"6 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trends and distribution of hardhead catfish in Texas estuaries—shifting relative abundance of a highly ubiquitous generalist predator 德克萨斯河口硬头鲶的趋势和分布--一种高度普遍的食肉动物的相对丰度变化

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-17 DOI: 10.1007/s10641-024-01596-1

Zachary Olsen, Jeremy McCulloch

{"title":"Trends and distribution of hardhead catfish in Texas estuaries—shifting relative abundance of a highly ubiquitous generalist predator","authors":"Zachary Olsen, Jeremy McCulloch","doi":"10.1007/s10641-024-01596-1","DOIUrl":"https://doi.org/10.1007/s10641-024-01596-1","url":null,"abstract":"Hardhead catfish (Ariopsis felis) are one of two Ariidae catfishes in the northern Gulf of Mexico and are one of the most common fishes found in the coastal waters in this region. As a generalist consumer with a unique reproductive life history and limited information on long-term population dynamics in the Western Gulf of Mexico, the objectives of this study were to assess trends in Texas estuaries using long-term fishery independent and dependent data sets and to conduct habitat suitability analyses in these same estuaries for both young-of-the-year and adult hardhead catfish. Some estuaries have experienced decreasing trends in catch-per-unit-effort (CPUE) of adult hardhead catfish beginning in the mid-1990s and early 2000s, and widespread decreasing trends in adult mean length were additionally observed for central and lower coast estuaries. Compared to the CPUE of finfish in the larger community, adult hardhead catfish largely exhibited decreasing trends in their relative contribution (expressed as percentage of CPUE) across most Texas estuaries. When combined with the larger Ariidae species grouping, and compared to the relative contribution of common Sciaenids, it was generally observed that the contributions of these two species groupings were converging for many estuaries. This was primarily characterized by increasing Ariidae trends. Given the trophic role of Ariidae catfishes, they clearly have the potential to exert major trophic influence on estuarine food webs. Our study highlights the value of long-term monitoring and the study of non-gamefish species in the larger assessment of community change across time.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"40 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reef fish biodiversity and occurrence of endangered sharks within a small marine protected area off Sint Maarten, Dutch Caribbean 荷属加勒比圣马丁岛附近一个小型海洋保护区内的珊瑚礁鱼类生物多样性和濒危鲨鱼出没情况

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-17 DOI: 10.1007/s10641-024-01588-1

Nathan Perisic, Leslie Hickerson, Delhon Helwitt, Daniel Norwood, Oliver N. Shipley, Tadzio Bervoets, Austin J. Gallagher

{"title":"Reef fish biodiversity and occurrence of endangered sharks within a small marine protected area off Sint Maarten, Dutch Caribbean","authors":"Nathan Perisic, Leslie Hickerson, Delhon Helwitt, Daniel Norwood, Oliver N. Shipley, Tadzio Bervoets, Austin J. Gallagher","doi":"10.1007/s10641-024-01588-1","DOIUrl":"https://doi.org/10.1007/s10641-024-01588-1","url":null,"abstract":"Marine protected areas (MPAs) are common conservation tools supporting the protection of threatened marine fishes, such as sharks. However, the creation of shark MPAs has been less common in the Greater Caribbean region despite a growing need and opportunity. In this study, we evaluated the occurrence of shark and reef fish biodiversity off Sint Maarten, Dutch Caribbean, with a particular emphasis on endangered shark presence within the Man of War Shoal Marine Protected Area (MPA). We utilized baited remote underwater video systems (BRUVs) to gather non-invasive data on the abundance and diversity of reef fish and shark species inside and outside the local MPA. Generalized linear models (GLMs) revealed no significant effect of protection status on the presence of the endangered Caribbean reef shark (Carcharhinus perezi). However, we found a significant influence of depth on shark occurrence, as well as an effect of habitat type on shark and reef fish biodiversity, with reef habitats showing the greatest significance. These results suggest that the effect of small coastal MPAs on bolstering local endangered species conservation in the Dutch Caribbean is likely to vary according to habitat features and how those species utilize those habitats across various life stages. These findings have implications for adaptive MPA management, which should be informed by the ecology and habitat preferences of target species to achieve maximum benefits for biodiversity conservation.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"2 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the drivers of fish beta diversity from beaches on a reduced flow stretch in an Amazonian River 从亚马逊河流量减少河段的海滩了解鱼类贝塔多样性的驱动因素

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-16 DOI: 10.1007/s10641-024-01597-0

Antonio Augusto Jardim Jr, Jean Carlo Gonçalves Ortega, Ronaldo Souza da Silva, Danielly Torres Hashiguti, Luciano Fogaça de Assis Montag

{"title":"Understanding the drivers of fish beta diversity from beaches on a reduced flow stretch in an Amazonian River","authors":"Antonio Augusto Jardim Jr, Jean Carlo Gonçalves Ortega, Ronaldo Souza da Silva, Danielly Torres Hashiguti, Luciano Fogaça de Assis Montag","doi":"10.1007/s10641-024-01597-0","DOIUrl":"https://doi.org/10.1007/s10641-024-01597-0","url":null,"abstract":"In this study, we aimed to identify the factors that drive the patterns in beta diversity of fish assemblages on the beaches of the Volta Grande do Xingu, a river stretch under the influence of Belo Monte dam. Fishes were collected using a trawl net in 28 sandy beaches during the low water period of 2021 (each beach was sampled once during this period). Measurements of environmental variables were carried out on-site, while spatial variables were obtained using Asymmetric Eigenvector Maps (AEM). Using the Bray–Curtis dissimilarity index, we calculated beta diversity and conducted a distance-based redundancy analysis (db-RDA) with the dissimilarity matrix to assess its relationship between beta diversity and environmental and spatial variables. Additionally, we performed a variance partition to quantify the pure and shared contributions of the explanatory matrices to our response matrix. The results revealed low beta diversity among the sampled beaches, and that this beta diversity was explained in part by the spatial variables and pH. Our findings underscore the influence of spatial structure on the assembly of local communities, indicating that dispersion processes and spatial connectivity are relevant mechanisms that contribute to the beta diversity of beach fish communities under influence of a reduced flow by a Hydropower Plant.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"28 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Commercial harvest and population characteristics of freshwater drum and buffalo Ictiobus spp. in Ohio waters of Lake Erie 伊利湖俄亥俄水域淡水鼓和水牛 Ictiobus spp.的商业捕捞和种群特征

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-14 DOI: 10.1007/s10641-024-01598-z

Graham F. Montague, Douglas L. Zentner, Richard A. Snow, Jory B. Bartnicki, Daniel E. Shoup, Brian A. Schmidt

{"title":"Commercial harvest and population characteristics of freshwater drum and buffalo Ictiobus spp. in Ohio waters of Lake Erie","authors":"Graham F. Montague, Douglas L. Zentner, Richard A. Snow, Jory B. Bartnicki, Daniel E. Shoup, Brian A. Schmidt","doi":"10.1007/s10641-024-01598-z","DOIUrl":"https://doi.org/10.1007/s10641-024-01598-z","url":null,"abstract":"Lake Erie supports many native nongame fishes including freshwater drum, bigmouth buffalo, and smallmouth buffalo. Commercial fisheries in Ohio waters of Lake Erie have no specific regulations on these species. We reviewed the commercial harvest records for these species and quantified population characteristics (size structure, age and growth, length and age at maturity, recruitment variability, and mortality rates) with fishery-independent samples. Commercial harvest effort has generally declined through time, but commercial harvest totals have increased, suggesting potential increases in population size. Sexually dimorphic growth occurred for each species, with females attaining larger sizes than males. Total annual mortality was 6.7–12.2% and recruitment variability indexes ranged from 0.44 to 0.51. Most fish of all species matured by age 6 or 7, and maximum observed ages were 56 years for freshwater drum and 48 years for buffalo species. A catch-only surplus production model suggested overharvest of freshwater drum, and buffalo species has occurred in the past and is likely ongoing. However, these results disagree with biological information collected on the fishery (i.e., age structure, growth, and recruitment). We suggest it is likely some level of overharvest is currently occurring in this fishery; however, more detailed assessment of harvest (i.e., information about size structure rather than aggregate total biomass removed) should be conducted to ensure it can be sustainably managed.\u0000","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"23 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Best practices for producing actionable knowledge to inform fisheries management and conservation 为渔业管理和养护提供可操作知识的最佳做法

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-10 DOI: 10.1007/s10641-024-01591-6

Cosette Arseneault-Deraps, Raegan Davis, M. E. Cole MacLeod, Erin Wilson, Ben Aubrey, Alyssa Goodenough, Jamie C. Madden, Kevin A. Adeli, Christopher Cvitanovic, Nathan Young, Julie M. Hinderer, Elizabeth A. Nyboer, Vivian M. Nguyen, Morgan L. Piczak, Steven J. Cooke

{"title":"Best practices for producing actionable knowledge to inform fisheries management and conservation","authors":"Cosette Arseneault-Deraps, Raegan Davis, M. E. Cole MacLeod, Erin Wilson, Ben Aubrey, Alyssa Goodenough, Jamie C. Madden, Kevin A. Adeli, Christopher Cvitanovic, Nathan Young, Julie M. Hinderer, Elizabeth A. Nyboer, Vivian M. Nguyen, Morgan L. Piczak, Steven J. Cooke","doi":"10.1007/s10641-024-01591-6","DOIUrl":"https://doi.org/10.1007/s10641-024-01591-6","url":null,"abstract":"In applied research, there is an expectation that knowledge generators will produce information that can be acted upon by knowledge end users (i.e., actionable knowledge); however, this is not always the case, resulting in a knowledge-action gap. Currently, there is no literature directly targeted at fisheries knowledge generators (e.g., researchers) to guide them in producing knowledge that could be readily used to inform fisheries management and conservation. To that end, this paper provides evidence-based recommendations for researchers to produce actionable knowledge. Key recommendations include the following: (1) embrace co-production; (2) prioritize capacity building; (3) include Indigenous and local knowledge systems; (4) diversify forms of knowledge exchange; (5) participate in interdisciplinary research; and (6) provide training for early-career researchers on producing actionable knowledge. We also analyze challenges to producing actionable knowledge, such as trust imbalances, costs of engaging in highly collaborative work, and difficulties related to effective knowledge exchange with fast-moving research timeframes, funding restrictions, and lack of institutional support. Using several case studies, we examine how knowledge generators overcome such challenges to successfully implement the key recommendations. It is our hope these recommendations will encourage and facilitate actionable research, contributing to more effective fisheries management and conservation.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"26 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diet and feeding ecology of the pike perch (Sander lucioperca), an invasive fish species: seasonal diet shifts 入侵鱼种梭鲈鱼（Sander lucioperca）的饮食和摄食生态：季节性饮食变化

IF 1.4 4区环境科学与生态学

Environmental Biology of Fishes Pub Date : 2024-09-10 DOI: 10.1007/s10641-024-01599-y

Meriem Bousseba, Sara Ouahb, Loubna Ferraj, Sana Farid, Mohammed Droussi, Mustapha Hasnaoui

{"title":"Diet and feeding ecology of the pike perch (Sander lucioperca), an invasive fish species: seasonal diet shifts","authors":"Meriem Bousseba, Sara Ouahb, Loubna Ferraj, Sana Farid, Mohammed Droussi, Mustapha Hasnaoui","doi":"10.1007/s10641-024-01599-y","DOIUrl":"https://doi.org/10.1007/s10641-024-01599-y","url":null,"abstract":"Sander lucioperca represents a potential candidate for aquaculture in Moroccan freshwater, but information concerning its diet and feeding habits is still lacking. This study therefore aims to contribute to the knowledge of the feeding ecology of this invasive species in Al Massira Reservoir, with particular emphasis on seasonal and intraspecific diet variation. Analysis of stomach contents revealed that the pike perch diet consists of various prey items, with an abundance of Lepomis gibbosus. However, S. lucioperca is also an opportunistic predator, capable of consuming other food resources when they become available in its habitat. This opportunistic behavior may account for the successful establishment of this species' population in a large reservoir, despite the coexistence of other carnivorous fish species. The dietary composition indicated a carnivorous diet with considerable seasonal variation. There was no significant sex-related or ontogenetic variation in the diet. The feeding intensity is similar between males and females, as well as across different size classes, but it varies according to the seasons. The results provide fundamental information about the feeding habits of this species, which is used for artificial culture research.","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"163 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0