Journal of Applied Ichthyology最新文献

{"title":"Vertical Patterns in Lake Sturgeon (Acipenser fulvescens) Larval Drift within Two Rivers Directly Connected to Green Bay, Lake Michigan","authors":"Patrick S. Forsythe,&nbsp;Dave A. Lawrence,&nbsp;Ashok Ragavendran,&nbsp;Kari McClellan,&nbsp;Miguel A. Ortiz,&nbsp;Tanna M. Dittmar,&nbsp;Robert F. Elliott,&nbsp;Michael C. Donofrio","doi":"10.1155/2023/6619373","DOIUrl":"10.1155/2023/6619373","url":null,"abstract":"<div>\u0000 <p>Fish larvae in riverine environments often disperse (e.g., drift) from areas of egg deposition at the time of hatch. Several components of drift can be important in terms of survival including timing, distribution in the water column, and body size. The longitudinal and cross-sectional aspects of larval lake sturgeon (<i>Acipenser fulvescens</i>) drift from upstream spawning sites have received considerable study. However, the vertical distribution of larval lake sturgeon in the water column has not been comprehensively evaluated with respect to river size, water depth, the size of larvae in drift over the entire drift period, and the effectiveness of traditional sampling gear (D-frame nets) designed to collect larvae along the river bottom. In 2013, we sampled larval lake sturgeon drifting from upstream spawning sites in the Menominee and Oconto Rivers (Wisconsin, USA) using traditional D-frame nets and custom fabricated sampling nets that vertically partitioned the water column. Drifting larval lake sturgeon were observed from the river bottom to the top of the water column in both systems. Vertical net section was a significant predictor of total larval catch with the highest catch occurring in nets towards the center of the water column but was dependent on net location within the rivers’ cross section and downstream distance from spawning locations. 42% of larvae captured across both rivers were outside of the sampling capability of the traditional D-frame nets (i.e., fish would have drifted over the top). Studies seeking to describe larval production for lake sturgeon, as well as other fish species that exhibit drift in larval dispersal, need to consider a balance between net design and sampling the vertical/cross sectional profiles of rivers. Size-based vertical drift may also have consequences for studies seeking to estimate genetic parameters (e.g., diversity and parentage).</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6619373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135511093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishment of SYBR Green I Real-Time PCR for Detection of Streptococcus agalactiae in Aquaculture Waters","authors":"Zaiyong Si,&nbsp;Zhenhua Ma,&nbsp;Fuguang Luo,&nbsp;Jingu Shi,&nbsp;Jie Huang,&nbsp;Zhiqiang Wang,&nbsp;Yanhong Wen,&nbsp;Yi Yi,&nbsp;Shuyu Han","doi":"10.1155/2023/9199300","DOIUrl":"10.1155/2023/9199300","url":null,"abstract":"<div>\u0000 <p><i>Streptococcus agalactiae</i> has a serious negative impact on tilapia aquaculture, and rapid detection of trace <i>S</i>. <i>agalactiae</i> in aquaculture waters and timely and effective sterilization measures could significantly reduce the probability of its outbreak in tilapia farming. Here, we established a fluorescence quantitative detection method of <i>S. agalactiae</i> in tilapia aquaculture waters based on the Streptococcus agalactiae CAMP factor (<i>cfb</i>) (GU217532.1) sequence of its CAMP factor. The results showed that the Ct value and logarithm of plasmid copy number presented a good linear relationship (<i>y</i> = −3.49<i>x</i> + 38.78; <i>R</i>² = 0.997) in the plasmid concentration range of 1.57 × 10²−1.57 × 10⁹ copies/<i>μ</i>L, and the lowest concentration for sensitive detection of the established method was 1.57 × 10² copies/<i>μ</i>L. The method exhibited high specificity for the detection of <i>S. agalactiae</i> and generated negative results when using the DNA of <i>Aeromonas veronii, Staphylococcus epidermidis, Aeromonas hydrophila,</i> and <i>Edwardsiella tarda</i> as templates for qPCR. Intra- and inter-group repeated experiments produced variation coefficients lower than 2%, indicating high stability and specificity of the method. The method was then used to detect <i>S. agalactiae</i> in two tilapia aquaculture waters. The results showed that the concentration of <i>S. agalactiae</i> was 12 copies/mL and 2 copies/mL in the two water samples, respectively. The method can directly detect trace <i>S. agalactiae</i> in the aquaculture water and facilitate the diagnosis, prevention, and control of <i>S. agalactiae</i> in tilapia aquaculture, which will greatly reduce the probability of large-scale outbreak of <i>S. agalactiae</i> and economic loss.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/9199300","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135568058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length-Weight Relationships and Condition Factor of Four Threatened Riverine Catfish Species in the Meghna River Estuary, Bangladesh","authors":"Jannatul Ferdous Jerin,&nbsp;Shanaz Akther,&nbsp;Joyoti Debnath,&nbsp;Debasish Saha","doi":"10.1155/2023/6651843","DOIUrl":"10.1155/2023/6651843","url":null,"abstract":"<div>\u0000 <p>The current study examined the length-weight relationships (LWRs), length-length relationships (LLRs), and condition factor (<i>K</i>) of four threatened riverine catfish species (<i>Pangasius pangasius</i>, <i>Rita rita</i>, <i>Sperata aor</i>, and <i>Bagarius bagarius</i>) sampled from the Meghna River Estuary (MRE), Bangladesh. A total of 578 individuals were collected from contracted fishermen between January and October 2022. The length and weight of each species exhibited a highly positive correlation. The regression coefficient was 2.24 for <i>P. pangasius</i>, 2.90 for <i>R. rita</i>, 2.91 for <i>S. aor</i>, and 3.25 for <i>B. bagarius</i>. Furthermore, all species demonstrated a highly positive correlation between total length and standard length (<i>r</i> &gt; 0.90). The calculated condition factor (<i>K</i>) values were 0.87 for <i>P. pangasius</i>, 1.18 for <i>R. rita</i>, 0.66 for <i>S. aor</i>, and 0.99 for <i>B. bagarius</i> indicating variations among the species. This study provides the first comprehensive documentation of all four major catfish species found in the MRE.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6651843","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length-Weight Relationships and Relative Condition Factor of 53 Species of Shallow-Water Fish in the Colombian Caribbean Sea","authors":"Alfredo Rodriguez,&nbsp;Katherine Mendoza,&nbsp;Jorge Paramo","doi":"10.1155/2023/6632464","DOIUrl":"10.1155/2023/6632464","url":null,"abstract":"<div>\u0000 <p>Length-weight relationships (LWR) were described for 53 species of shallow-water fish caught with bottom trawls in a depth range between 7.3 and 108.1 m during September 2013 in the Colombian Caribbean Sea (fishing area 31 of the FAO). A linear regression was performed using the logarithmically transformed data to calculate <i>a</i> and <i>b</i> coefficients and their 95% confidence interval of the LWR for 53 fish species corresponding to 28 families and 44 genera. Six fish species showed a maximum total length greater than that reported in FishBase: <i>Astrapogon alutus</i> (102.00 mm), <i>Eucinostomus harengulus</i> (162.00 mm), <i>Haemulopsis corvinaeformis</i> (293.00 mm), <i>Cyclopsetta chittendeni</i> (390.00 mm), <i>Etropus crossotus</i> (224.00 mm), and <i>Bairdiella ronchus</i> (415.00 mm). A total of 24 species (45.3%) exhibited isometric growth, 21 species (39.6%) negative allometric, and 8 species (15.1%) positive allometric. This study shows the first estimates of LWR for 25 species of shallow-water fish in the Colombian Caribbean Sea. We found interdependence of growth parameters as a function of fish body shape. The analysis of the relative condition factor indicated that 21 fish species (39.6%) showed poor growth conditions. The results obtained from this study contribute to fill information gaps on shallow-water fish populations and also help fisheries scientists in future population assessment studies in the Colombian Caribbean Sea.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6632464","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135346888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Different Feeding Rates for the Growth and Body Composition of Manchurian Trout, Brachymystax lenok","authors":"Enhui Liu,&nbsp;Tianqing Huang,&nbsp;Wei Gu,&nbsp;Gaochao Wang,&nbsp;Bingqian Wang,&nbsp;Xiulan Shi,&nbsp;Gefeng Xu","doi":"10.1155/2023/3485493","DOIUrl":"10.1155/2023/3485493","url":null,"abstract":"<div>\u0000 <p>A 50-day feeding trial was conducted to investigate the effects of feeding rates (FRs) on the growth, feed utilisation, and body composition of <i>Brachymystax lenok</i>. Juveniles of <i>B. lenok</i> (initial body weight of 7.6 ± 0.2 g) were fed a commercial diet at the different FRs of 1, 2, 3, 4, and 5% of their body weight. The results indicated that weight gain (WG) and specific growth rate (SGR) were first increased and then decreased with an increase in the FR. The WG and SGR of the 4% group were 299.78% and 3.96%, respectively. The feed conversion ratio (FCR) and protein efficiency ratio (PER) were also significantly affected by the FR (<i>P</i> &lt; 0.05). Furthermore, the condition factor (CF) did not differ significantly among the treatment groups (<i>P</i> &gt; 0.05). However, the FR significantly affected the hepatosomatic index (HSI) and visceral somatic index (VSI) (<i>P</i> &lt; 0.05). With an increase in the FR, the moisture content of the fish decreased, but the ash content changed irregularly. The protein content increased significantly with increasing FR (<i>P</i> &lt; 0.05). The lipid content showed a trend similar to protein in the body. Based on the SGR and FCR data, the optimal FR range was 2.4 to 3.1% for <i>B</i>. <i>lenok</i> (7−30 g body weight) at a water temperature of 16°C.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/3485493","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136108075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cloning, Expression Analysis, and Detection of the Vitellogenin in the Chinese Black Sleeper Bostrychus sinensis","authors":"Yangyang Zhang,&nbsp;Kun Meng,&nbsp;Tingting Zhou,&nbsp;Lei Chen,&nbsp;Tiansheng Chen,&nbsp;Min Long,&nbsp;Kefu Zhou","doi":"10.1155/2023/2172611","DOIUrl":"10.1155/2023/2172611","url":null,"abstract":"<div>\u0000 <p>Endocrine disruptors in marine environments represented by estrogens lead to reverse health phenomena. To obtain a more effective way to reflect and detect environmental estrogens pollution, a method was developed to obtain the full-length cDNA coding <i>vitellogenin</i> gene in <i>B. sinensis</i>, induced by 17<i>β</i>-estradiol (E2) solution. We have downloaded 16 fish gene sequences from the NCBI database and designed PCR primers accordingly. Based on the quantitative real-time PCR method (qRT-PCR), we analyze the differences in gene expression under the conditions of different E2 exposure times in the low, middle, and high-dose groups. The full-length cDNA consists of 4738 nucleotides with a reading frame encoding 1540 amino acid residues. In vitro recombinant plasmids were constructed and transferred to <i>E. coli</i> BL21 for vitellogenin expression. Efficient fusion expression was obtained by IPTG at 16°C, and the expressed target protein (680 amino acids, 75 kDa) existed in a soluble state, accounting for more than 25% of the total soluble protein. We prepared monoclonal antibodies using established immunohistochemistry to detect vitellogenin expression sites in sexually mature female fish. Our study shows that the expression sites of Vg in sexually mature female fish are mainly distributed in the fishtail, hepatopancreas, intestine, muscle, ovary, and pronephric kidney. In conclusion, the vitellogenin from <i>B. sinensis</i> could be used as a biomarker of environmental estrogens to achieve rapid detection in the marine environment and the subsequent experiments of development in colloidal gold strips after this research would be established to provide a highly efficient and convenient detection method for environment pollution.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2172611","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48122370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Young Allis Shad Alosa alosa (Clupeidae) Would Not Be Euryphagous: An Assessment of Juvenile Diet and Prey Selectivity under Riverine-Type Conditions","authors":"Loïc Baumann,&nbsp;Adrien Aries,&nbsp;Jacky Vedrenne,&nbsp;Joris Philip,&nbsp;Sylvia Moreira,&nbsp;William Bouyssonnie,&nbsp;Agnès Bardonnet,&nbsp;Marie-Laure Acolas","doi":"10.1155/2023/2499126","DOIUrl":"10.1155/2023/2499126","url":null,"abstract":"<div>\u0000 <p>Allis shad <i>Alosa alosa</i> hatches and develops in freshwater before migrating to the sea during its first months of life. Some field research works dedicated to the diet of the species in freshwater put forward that young stages of allis shad feed mainly on zooplankton, being opportunistic and euryphagous; their diet would diversify through ontogeny in relation to growth. However, these assumptions have never been confronted to the availability of prey, and the exact age of fish was unknown. In this work, we reared young allis shad under seminatural conditions, from 6 to 10 days posthatching until nearly 3 months old, in a trophic environment representative of a natural river. The rearing structures were designed as artificial rivers, supplied continuously by natural riverine water and zooplankton prey. Additional zooplankton was produced in separate basins and added daily in the structures. One artificial river was used to rear allis shad in 2018, and the experiment was conducted on two allis shad batches in 2019 (one batch per river). We described the nekton communities of potential prey available for allis shad in the rearing structures by sampling the water every week, and we compared these data with the stomach contents of fish captured at one and two months old posthatching to describe their diet and prey selectivity. Our results suggest that young allis shad should not be considered as opportunistic in their feeding, since clear selectivity was observed at both ages. One-month-old allis shad highly selected cladocerans, probably because they are easy to catch for fish at this age, when their swimming abilities are limited. Feeding selection at two months old drifted towards other prey taxa (dipteran larvae, ostracods, and/or copepods), whereas cladocerans were no longer preferred. Our results suggest that fish density and competition may entice two-month-old allis shad to enlarge their diet to other taxa, including benthic organisms, while one-month-old fish do not seem able to shift their diet and would fast in the absence of cladocerans. Thus, this highlights that the feeding of young allis shad may be highly challenging during their first month of growth.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2499126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48565599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sea Surface Temperature Affects the Reproductive Biology of Female Pearl Perch (Glaucosoma scapulare Macleay, 1881) in Queensland, Australia","authors":"Matthew J. Campbell,&nbsp;Jaimee E. Joiner,&nbsp;Mark F. McLennan,&nbsp;Ian R. Tibbetts","doi":"10.1155/2023/5529782","DOIUrl":"10.1155/2023/5529782","url":null,"abstract":"<div>\u0000 <p>Pearl perch (<i>Glaucosoma scapulare</i>) are endemic to the east coast of Australia and have a long history of exploitation. Recent stock assessments indicate that the current rate of fishing mortality is unsustainable in the long term. To better inform the management of the pearl perch stock and to address gaps in our understanding of their reproductive biology, we investigated patterns in gonad development and estimated length- and age-at-maturity and batch fecundity from females collected from southern and central Queensland waters between 2018 and 2022. The mean gonadosomatic index (GSI) varied both temporally and spatially, with maxima in the austral autumn in southern Queensland and in summer in central Queensland, coinciding with sea surface temperatures between 25.26 and 26.32°C. The length- and age-at-maturity of females were 353 mm (fork length, FL) and 4.42 years, respectively, and batch fecundity (<i>B</i>) was correlated to FL such that Ln(<i>B</i>) = 2.45 × Ln(FL) + 3.90. Our results will inform a management strategy to recover the stock to acceptable levels of exploitation.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5529782","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42476086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weight-Length and Length-Length Relationships of the Endangered Zebra Pleco Hypancistrus zebra (Siluriformes, Loricariidae) from the Xingu River, Amazon, Brazil","authors":"Fábio J. T. Barros,&nbsp;Edilberto L. C. Rodrigues,&nbsp;Mayllon C. de S. Moura,&nbsp;Rayane de A. Torres,&nbsp;Eris A. Paula,&nbsp;Leandro M. Sousa","doi":"10.1155/2023/5158180","DOIUrl":"10.1155/2023/5158180","url":null,"abstract":"<div>\u0000 <p><i>Hypancistrus zebra</i> is a <i>Loricariid</i> endemic to a very limited stretch of the Xingu River and has a high value in the ornamental fish trade. The natural populations have experienced high fishing pressure since the late 80s and were recently impacted by the construction of the third largest hydroelectric dam complex in the world, the Belo Monte Project. Since 2004, it has been considered critically endangered and had its capture and trade forbidden. Even with its capture and trade prohibited since 2004, the species continues to be one of the most trafficked fish in the world. The biometric knowledge of the species is essential for monitoring its natural populations and management in <i>ex situ</i> environments. This work aims to establish the weight-length relationship (WLR) and length-length relationship (LLR) of the species and to evaluate the condition factor (<i>K</i>) of <i>H. zebra</i> rescued from trafficking. The study was conducted at the Laboratório de Aquicultura de Peixes Ornamentais do Xingu from February 2022 to June 2022, estimating the parameters of WLR and LLR of 1165 specimens divided into four simple linear regression (SLR) models: all specimens, only juveniles, only females, and only males. The <i>K</i> of 190 specimens rescued from trafficking by the Brazilian Federal Police was evaluated. The WLRs and LLRs were estimated using SLR. The difference between the allometry coefficients (<i>b</i>) and between the residuals of the models (juveniles, females, and males) was evaluated using the ANOVA significance test. The total length of the species ranged from 1.6 to 9.3 cm. The coefficient of allometry (<i>b</i>) of the WLR of the species is 3.22 and of the LLR is 1.04, demonstrating that <i>H. zebra</i> presents positive allometric growth. The evaluation of the residuals of the models showed differences between ontogenetic stages and between sexes. The development of juveniles is isometric until the first sexual maturation phase and differs in negative allometric for females and positive allometric for males, showing sexual dimorphism in the species. Among the specimens rescued from trafficking, 54.74% were underweight, and 13.16% were under 60% of the expected <i>K</i> value, demonstrating the poor conditions in which these animals are transported by trafficking.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5158180","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64796104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic Diversity and Phylogeography of Taenioides cirratus in Five Geographical Populations Based on Mitochondrial COI and Cytb Gene Sequences","authors":"Guoqing Zhang,&nbsp;Cheng Chen,&nbsp;Wenxuan Lu,&nbsp;Jing Li,&nbsp;Ting Fang,&nbsp;Kun Yang,&nbsp;Xiuxia Zhao,&nbsp;Na Gao,&nbsp;Yangyang Liang","doi":"10.1155/2023/4459823","DOIUrl":"10.1155/2023/4459823","url":null,"abstract":"<div>\u0000 <p>The genetic diversity of <i>Taenioides cirratus</i> was investigated on the basis of mitochondrial cytochrome c oxidase subunit I (<i>COI</i>) and cytochrome b (<i>Cytb</i>) gene sequences. A total of 159 specimens collected from the Chaohu Lake (CL), Nansihu Lake (NL), Taihu Lake (TL), Pearl River (PR), and Nandu River (NR) were sequenced. The total length of the sequence was 2485 bp with 412 polymorphic sites. A total of 73 haplotypes were identified, with Hap1 being the most widely distributed. The PR and NR populations showed high genetic diversity, while the CL population showed low genetic diversity. TL and NL showed high haplotype diversity but low nucleotide diversity. The analysis of molecular variance demonstrated that the sequence variations were mainly occurred among populations. <i>T. cirratus</i> populations are declining, and rare alleles are present at low frequencies, as analysed using a neutral test and a mismatched distribution analysis. There was a relatively high level of genetic differentiation among the populations of the Yangtze River basin (including NL), PR, and NR (<i>Fst</i> &gt; 0.15). The two similar phylogenetic trees constructed by the maximum likelihood (ML) and Bayesian inference (BI) methods presented three major lineages, of which lineage II contains haplotypes from PR and NR, lineage III contains haplotypes from CL, NL, TL, and PR, whereas lineage I contains only a portion of haplotypes from NR. Based on the neutral test, mismatch analysis, and Bayesian Skyline Plot (BSP), geological and climatic events were inferred to have played an important role in the historical dynamics of <i>T. cirratus</i> population. Hap1, Hap25, and Hap58 were inferred as possible ancestral haplotypes by network analysis. Our study offers an essential foundation for resource preservation and additional taxonomic clarification of <i>T. cirratus</i>.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/4459823","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45243182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}