Latin American Journal of Aquatic Research最新文献_第7页

Toxicity of secondary treated sewage disinfected with chlorine gas and hypochlorite to zebrafish Danio rerio 氯气和次氯酸盐二次处理污水对斑马鱼的毒性

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2893

Kevin Omar Ponce-Palomera, S. Guerrero-Galván, F. Vega-Villasante, Daniela Rodríguez-Partida

{"title":"Toxicity of secondary treated sewage disinfected with chlorine gas and hypochlorite to zebrafish Danio rerio","authors":"Kevin Omar Ponce-Palomera, S. Guerrero-Galván, F. Vega-Villasante, Daniela Rodríguez-Partida","doi":"10.3856/vol50-issue5-fulltext-2893","DOIUrl":"https://doi.org/10.3856/vol50-issue5-fulltext-2893","url":null,"abstract":"The sewage contains toxic chemical compounds that secondary treatment plants do not eliminate, and chlorine is usually added for disinfection before discharge. Chlorine reacts with sewage compounds forming other toxic compounds. The objective of this study was to evaluate the toxicity of treated sewage from a secondary treatment plant using Danio rerio embryos. Three types of treated sewage were tested, one disinfected with chlorine gas (dCl2), another with sodium hypochlorite (dClO), and the plant discharge, which is a mixture of the two sewage disinfection methods (mCl) with a proportion of 70% of dCl2 and 30% of dClO. To estimate the median lethal dilution treated sewage was diluted with dechlorinated tap water at 20, 40, 60, and 80%. Two additional points were made with pure treated sewage and pure dechlorinated tap water. Embryos were exposed 1 h after fertilization (hpf) to 144 hpf. The dCl2 and the mCl were lethal at 60 and 72 hpf, respectively, while the dClO did not show lethality. The embryos exposed to the mCl showed heart failure and slower blood circulation. Those exposed to dCl2 showed teratogenic effects such as pericardial edema and spinal curvature, while those exposed to dClO presented malformations such as incomplete eye development and otolith formation absence.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44479983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of synophthalmia and leucism in a bull shark (Carcharhinus leucas) embryo from the southeastern Gulf of Mexico 墨西哥湾东南部一头牛鲨（Carcharhinus leucas）胚胎中的同眼症和亮氨酸血症的首次报告

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2896

A. Wakida-Kusunoki, V. Anislado-Tolentino, L. F. Del Moral-Flores

引用次数: 0

Geomorphology and sedimentary features of the Simpson Submarine Canyon, 44°S, southern Chilean margin 智利南部44°S辛普森海底峡谷地貌与沉积特征

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2870

C. Rodrigo, M. Fernández, X. Contardo, R. Fernández

引用次数: 1

Two-year monitoring of enterovirus and rotavirus A in recreational freshwater from an island region, Pará State, northern Brazil 巴西北部帕拉州一个岛屿地区休闲淡水中肠道病毒和轮状病毒A的两年监测

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2844

J. C. S. Alves, D. M. Teixeira, Danielle Rodrigues De Deus, V. C. Smith, D. S. A. Santos, R. D. S. Bandeira, J. A. M. Siqueira, L. Morais, J. Monteiro, L. Soares, F. N. Tavares, Y. Gabbay

{"title":"Two-year monitoring of enterovirus and rotavirus A in recreational freshwater from an island region, Pará State, northern Brazil","authors":"J. C. S. Alves, D. M. Teixeira, Danielle Rodrigues De Deus, V. C. Smith, D. S. A. Santos, R. D. S. Bandeira, J. A. M. Siqueira, L. Morais, J. Monteiro, L. Soares, F. N. Tavares, Y. Gabbay","doi":"10.3856/vol50-issue5-fulltext-2844","DOIUrl":"https://doi.org/10.3856/vol50-issue5-fulltext-2844","url":null,"abstract":"Enteric viruses are major causes of waterborne diseases and are present in large quantities in the stools of infected individuals. Its viability in the environment lasts for months, favoring the contamination of water used for consumption and recreation. The study aimed to monitor monthly the circulation of enterovirus (EV) and group A rotavirus (RVA) in recreational freshwater from an island region used as a bathhouse in northern Brazil, from January 2012 to December 2013. The viral RNA was obtained using guanidine isothiocyanate/silica after viral concentration by adsorption-elution method. The molecular detection was carried out by semi (EV) and nested-PCR (RVA) and the amplicons were sequenced on automated sequencer. At least one of these viruses was detected on 40.4% (42/104) of the samples. RVA was the most frequent (n = 32; 30.8%) when compared to EV (n = 20; 19.2%). Co-circulation between both was identified in 9.6% (n = 10). The highest viral positivity was found in SP02 (46.1%). The highest viral positivity was observed during high tides (57.7%; 60/104). Most EV samples were characterized as coxsackievirus (CV) A5 (85.7%, 12/14) and others as Sabin 1 poliovirus (14.2%, 2/14). The RVA positive samples were genotyped as G2, G3, G9, G12, P[8], P[4], and P[6]. These viruses were detected in 35.6% (37/104) of the samples with an acceptable concentration of fecal coliform bacteria. These results demonstrate the contamination of surface water intended for recreation by enteric viruses of Public Health concern even when bacterial indicators are within the tolerated limit, a factor that confirms the need for public policies aimed the sewage treatment before its release into water bodies.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45153665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the identity of "Dendrilla membranosa" (Porifera, Dendroceratida) sensu Burton, and the specimens collected in Argentina, SW Atlantic Ocean 关于“Dendrilla membranosa”（Porifera，Dendroceratida）的身份和在大西洋西南部阿根廷采集的标本

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2939

L. Schejter, P. Ríos, J. Cristobo, R. V. VAN SOEST

引用次数: 0

Reproductive dynamics of Peprilus medius captured in the Ecuadorian Pacific 在厄瓜多尔太平洋捕获的中型红毛蚶的繁殖动态

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2928

Kléver Mendoza-Nieto, Mila C. Soriguer Escofet, M. Carrera-Fernández, J. Alió, Félix Figueroa-Chávez

{"title":"Reproductive dynamics of Peprilus medius captured in the Ecuadorian Pacific","authors":"Kléver Mendoza-Nieto, Mila C. Soriguer Escofet, M. Carrera-Fernández, J. Alió, Félix Figueroa-Chávez","doi":"10.3856/vol50-issue5-fulltext-2928","DOIUrl":"https://doi.org/10.3856/vol50-issue5-fulltext-2928","url":null,"abstract":"In Ecuador, Peprilus medius is an important fishery resource whose destination is for local consumption and export. There are few local studies on its reproductive biology, and its capture is not regulated. Therefore, this study evaluates the most relevant aspects of its reproductive activity. Samples were obtained monthly from January to December 2017 from the capture of the purse seine fleet and the artisanal gillnet fleet landing near Manta. The morphometric analysis included the length-weight relationship, estimated using the allometry equation. The size at sexual maturity is based on the L50 criterion; the reproductive cycle was determined according to the monthly analyses of the gonadosomatic index (GSI), hepatosomatic index (HSI), and relative condition factor (Kn). A total of 334 specimens were analyzed, with average sizes of 22.0, 21.87, and 21.91 cm of total length (TL), for males, females, and combined sexes, respectively. Sex ratio was 1.17M: 1F (P > 0.05), while the length-weight relationship showed negative allometric growth for both males and females (b = 2.58; CI95% 2.48-2.72). Size at sexual maturity L50 was estimated at 21.84 and 21.23 cm TL for males and females, respectively. The GSI and HSI values and Kn showed significant differences among months (P < 0.05), with a marked seasonality during the single reproductive period. Mean size at first capture of 21 cm TL is recommended.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44546603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New records of elasmobranchs (Vertebrata: Elasmobranchii) from the southwestern Gulf of Mexico 墨西哥湾西南部板鳃亚目新记录(脊椎动物:板鳃亚目)

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2917

L. F. Del Moral-Flores, María Belén González-Pérez, A. Wakida-Kusunoki, A. Martínez-Guevara, Guadalupe Del Rosario Vleeshower-Hernández, Nissi Mariane Rodríguez-Rentería

引用次数: 0

Yeast Rhodoturula glutinis as a modulator of innate immune and oxidative stress-related genes in Oreochromis niloticus cultured in a Biofloc system 酵母粘红酵母作为天然免疫和氧化应激相关基因的调节性因子在生物絮团系统中培养的nilochromis

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2937

Daniel Becerril-Cortés, Aida Hamdan-Partida, J. A. Mata-Sotres, Maurício Gustavo Coelho Emerenciano, M. C. Monroy-Dosta

{"title":"Yeast Rhodoturula glutinis as a modulator of innate immune and oxidative stress-related genes in Oreochromis niloticus cultured in a Biofloc system","authors":"Daniel Becerril-Cortés, Aida Hamdan-Partida, J. A. Mata-Sotres, Maurício Gustavo Coelho Emerenciano, M. C. Monroy-Dosta","doi":"10.3856/vol50-issue5-fulltext-2937","DOIUrl":"https://doi.org/10.3856/vol50-issue5-fulltext-2937","url":null,"abstract":"The effect of live yeast Rhodoturula glutinis was evaluated on juvenile Oreochromis niloticus cultivated in a Biofloc system. Growth performance and the expression of innate response and relevant oxidative stress genes were evaluated after a 12-week feeding trial. Three experimental treatments were evaluated in a conventional tilapia culture (control), Biofloc culture (BFT), and Biofloc with the addition of the live yeast R. glutinis 1×106 CFU g-1 (BFT+Rg), with four replicates per treatment. In all cases, commercial food was supplied to the organisms (32% protein and 5% lipids). O. niloticus juveniles (7.02 ± 0.04 g) were randomly distributed in 12 tanks, each with 15 animals. BFT+Rg treatment showed a significant increase in weight gain compared with the other treatments. Significant improvements were found in Fulton's condition factor, feed conversion rate, and hepatosomatic index under Biofloc conditions, BFT, and BFT+Rg treatments. No significant differences were observed in survival. R. glutinis directly influenced gene expression in the liver and intestine. The expression of tnfa, tgfb, hsp70, and gpx, genes in the liver significantly increased in the BFT+Rg treatment compared with the other treatments. Similarly, a significant increase was found in intestinal il1b, tnfa, tgfb, trf, hsp70 gpx, and cat expression patterns in the BFT+Rg treatment. Based on the performance and immune response, the present study suggests the use of R. glutinis as a strategy to increase the productivity of tilapia in Biofloc culture.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46177787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of temperature, pH, and photoperiod on the performance of a freshwater cladoceran Moina micrura culture enriched with Lysinibacillus fusiformis and Bacillus pocheonensis 温度、pH和光周期对富含梭状赖氨芽孢杆菌和波切能芽孢杆菌的淡水枝角虫Moina micrura培养物性能的影响

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2932

N. Samat, F. Yusoff, K. C. Lim, N. W. Rasdi, F. Syukri, M. Karim

{"title":"Effects of temperature, pH, and photoperiod on the performance of a freshwater cladoceran Moina micrura culture enriched with Lysinibacillus fusiformis and Bacillus pocheonensis","authors":"N. Samat, F. Yusoff, K. C. Lim, N. W. Rasdi, F. Syukri, M. Karim","doi":"10.3856/vol50-issue5-fulltext-2932","DOIUrl":"https://doi.org/10.3856/vol50-issue5-fulltext-2932","url":null,"abstract":"The freshwater cladoceran Moina micrura has tremendous potential for mass culture as a live feed for larviculture. This study aimed to evaluate the efficacy of probiotics Lysinibacillus fusiformis A1 and Bacillus pocheonensis S2 in enhancing the population density, growth rate, and production of M. micrura under different environmental conditions. Four different temperatures (15, 20, 25, and 30°C), pH levels (4, 6, 8, and 10), and photoperiods (4L:20D, 6L:18D, 8L:16D, and 12L:12D) were set up. The daily number of individuals incubated under each environmental parameter was monitored for 12 days to determine the population density and growth rate of M. micrura. Meanwhile, the daily number of neonates from five females kept under respective environmental parameters was monitored until they died naturally. Probiotics were added individually at 5×104 CFU mL-1 twice during the first and sixth days of the experiment. M. micrura enriched with B. pocheonensis S2 at 30°C had the highest maximum population density (10 ± 0.2 ind mL-1) and the number of neonates produced (132 ± 6.43 ind), whereas treatment at 20°C had the best growth rate (0.1863 ± 0.006 d-1). M. micrura incubated with B. pocheonensis S2 at a normal photoperiod of 12L:12D had the highest maximum population density (10 ± 0.3 ind mL-1) and the number of neonates produced (129 ± 4.58 ind) while incubation at 8L:16D had the best growth rate (0.2879 ± 0.0007 d-1). M. micrura enriched with L. fusiformis A1 at pH 8 had the highest maximum population density (11 ± 0.8 ind mL-1), growth rate (0.5508 ± 0.04 d-1), and the number of neonates produced (129 ± 4.36 ind). Results recommend that a warmer temperature of 30°C, alkaline pH from 8 to 10, and a normal photoperiod of 12L:12D can be adopted for M. micrura enrichment with B. pocheonensis S2 to maximize its productivity for aquaculture use.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47907680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leocrates ernstehlersi n. sp. (Polychaeta: Hesionidae), a new species from Juan Fernández Archipelago, Chile Leocrates ernstehlersi n.sp.（Polychaeta：Hesionidae），智利胡安·费尔南德斯群岛的一个新种

IF 1 4区农林科学

Latin American Journal of Aquatic Research Pub Date : 2022-11-01 DOI: 10.3856/vol50-issue5-fulltext-2948

O. Díaz-Díaz, N. Rozbaczylo, R. Moreno

引用次数: 0