Pub Date : 2021-03-27DOI: 10.20950/1678-2305.2020.46.4.600
Camila Primitivo, A. Schiavetti, K. Freire
The aim of this study was to analyze the oceanic recreational fishing in the Royal Charlotte Bank, state of Bahia, Brazil. Only data from an oceanic recreational fishing operator based in the municipality of Canavieiras, southern Bahia, were used, from 2012 to 2017. Overall, 103 fish specimens were caught and released, during this period, belonging to the following species: Makaira nigricans, Kajikia albida, and Istiophorus platypterus. Fishery operations occurred from October to March, with the highest catch in number in December (56.3%). The largest annual catch was recorded in 2013, with 39 individuals. The catch per unit effort ranged from 1.0 to 1.4 fishes per trip, with the highest value in December. Even though data presented here are partial, they can help to establish a strategic scenario for the fishing sector in Bahia, along with data from other fishing sectors (artisanal, industrial, subsistence and scientific).
{"title":"BILLFISH CATCHES FROM OCEANIC RECREATIONAL FISHING IN THE ROYAL CHARLOTTE BANK, BAHIA, BRAZIL","authors":"Camila Primitivo, A. Schiavetti, K. Freire","doi":"10.20950/1678-2305.2020.46.4.600","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.600","url":null,"abstract":"The aim of this study was to analyze the oceanic recreational fishing in the Royal Charlotte Bank, state of Bahia, Brazil. Only data from an oceanic recreational fishing operator based in the municipality of Canavieiras, southern Bahia, were used, from 2012 to 2017. Overall, 103 fish specimens were caught and released, during this period, belonging to the following species: Makaira nigricans, Kajikia albida, and Istiophorus platypterus. Fishery operations occurred from October to March, with the highest catch in number in December (56.3%). The largest annual catch was recorded in 2013, with 39 individuals. The catch per unit effort ranged from 1.0 to 1.4 fishes per trip, with the highest value in December. Even though data presented here are partial, they can help to establish a strategic scenario for the fishing sector in Bahia, along with data from other fishing sectors (artisanal, industrial, subsistence and scientific).","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"20 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73232714","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}
Pub Date : 2021-03-27DOI: 10.20950/1678-2305.2020.46.4.608
G. S. Mello, J. Rosa, D. R. Silveira, Patrícia Gomes Vivian, Natacha Deboni Cereser, C. D. Timm
Species of the Vibrio genus are commonly reported as agents of food poisoning outbreaks associated with fish consumption. The objective of this study was to assess the antimicrobial activity of the essential oils of Origanum vulgare and Ocimum basilicum against Vibrio parahaemolyticus and Vibrio vulnificus, as well as to assess their addition to fillets of Mugil platanus and sensorial acceptance among consumers. The antimicrobial activity was analyzed by the disc diffusion test and minimal bactericidal concentration (MBC). M. platanus fillets, experimentally contaminated, were marinated for 24 hours in a solution containing 1.0% and 1.5% of essential oil of O. vulgare. For the sensory analysis, samples marinated in 1.5% of O. vulgare oil were prepared and offered to 100 testers. The oil of O. basilicum shows no antimicrobial activity, so its application would be ineffective; for such reason the subsequent tests were not performed. However, the essential oil of O. vulgare produced inhibition halo diameters ranging from 24.6 to 34.1 mm, on average, and the MBC ranging from 3.9% to 15.6%. When added to the product, the essential oil of O. vulgare eliminated the microorganisms that were experimentally inoculated. In the sensorial analysis, samples marinated in 1.5% of O. vulgare essential oil obtained an average of 6.82 of acceptance note among consumers.
弧菌属的种类通常被报道为与食用鱼类有关的食物中毒暴发的媒介。本研究的目的是评估寻常木和罗勒木精油对副溶血性弧菌和创伤弧菌的抑菌活性，以及评估它们在平头木鱼片中的添加量和消费者的感官接受度。采用圆盘扩散试验和最小杀菌浓度(MBC)对其抑菌活性进行了分析。将实验污染的桔黄鱼片在含1.0%和1.5%桔黄精油的溶液中浸泡24小时。为了进行感官分析，制备了1.5%的油浸泡样品，并提供给100名测试者。罗勒油无抑菌活性，应用效果不理想;因此，没有进行后续的测试。结果表明，精油的抑制晕直径平均为24.6 ~ 34.1 mm, MBC为3.9% ~ 15.6%。当加入到产品中时，野藿香精油消除了实验接种的微生物。在感官分析中，在1.5%的精油中浸泡的样品在消费者中的平均接受度为6.82。
{"title":"ANTIMICROBIAL ACTIVITY OF ESSENTIAL OILS OF Origanum vulgare AND Ocimum basilicum AGAINST Vibrio parahaemolyticus AND Vibrio vulnificus AND ADDITION OF THESE OILS ON Mugil platanus FILLETS","authors":"G. S. Mello, J. Rosa, D. R. Silveira, Patrícia Gomes Vivian, Natacha Deboni Cereser, C. D. Timm","doi":"10.20950/1678-2305.2020.46.4.608","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.608","url":null,"abstract":"Species of the Vibrio genus are commonly reported as agents of food poisoning outbreaks associated with fish consumption. The objective of this study was to assess the antimicrobial activity of the essential oils of Origanum vulgare and Ocimum basilicum against Vibrio parahaemolyticus and Vibrio vulnificus, as well as to assess their addition to fillets of Mugil platanus and sensorial acceptance among consumers. The antimicrobial activity was analyzed by the disc diffusion test and minimal bactericidal concentration (MBC). M. platanus fillets, experimentally contaminated, were marinated for 24 hours in a solution containing 1.0% and 1.5% of essential oil of O. vulgare. For the sensory analysis, samples marinated in 1.5% of O. vulgare oil were prepared and offered to 100 testers. The oil of O. basilicum shows no antimicrobial activity, so its application would be ineffective; for such reason the subsequent tests were not performed. However, the essential oil of O. vulgare produced inhibition halo diameters ranging from 24.6 to 34.1 mm, on average, and the MBC ranging from 3.9% to 15.6%. When added to the product, the essential oil of O. vulgare eliminated the microorganisms that were experimentally inoculated. In the sensorial analysis, samples marinated in 1.5% of O. vulgare essential oil obtained an average of 6.82 of acceptance note among consumers.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"20 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77389917","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}
Pub Date : 2021-03-26DOI: 10.20950/1678-2305.2020.46.4.554
I. A. Tribuzy-Neto, H. Beltrão, Zehev Schwartz Benzaken
The updated status of the ornamental fish trade from the Amazonas state was analyzed between the years of 2006-2015 (IBAMA database). The trade of ornamental fish from Amazonas State mainly consists of wild species. A total of 142,552,253 specimens were exported during the studied period. Sales plummeted since 2006 from 26,075,241 specimens exported to 2,729,846 specimens in 2015 (Jan-Jul). Between 2006 and 2015, a total of US$ 23.0 million in revenue was generated from fish exports destined to 35 countries. Germany, Taiwan, USA and Japan accounted for 75.5% of the volume and 76.7% of the value exported. During this time 375 species were exported, included Paracheirodon axelrodi, P. simulans, Hemigrammus bleheri, Otociclus affinis and O. hoppei that together represented 84.5% of exports. Thirty of them are not on the list of Brazilian Institute of the Environment and Renewable Natural Resources IBAMA species released for export, and six are currently on the list of endangered fauna of Brazil: Hopliancistrus tricornis, Leporacanthicus joselimai, Parancistrus nudiventris, Peckoltia compta, Scobinancistrus auratus and S. pariolispos. The collection of this information can help producers, managers and environmentalists in the elaboration of the political policies to establish regulations to govern the trade.
{"title":"ANALYSIS OF THE ORNAMENTAL FISH EXPORTS FROM THE AMAZON STATE, BRAZIL","authors":"I. A. Tribuzy-Neto, H. Beltrão, Zehev Schwartz Benzaken","doi":"10.20950/1678-2305.2020.46.4.554","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.554","url":null,"abstract":"The updated status of the ornamental fish trade from the Amazonas state was analyzed between the years of 2006-2015 (IBAMA database). The trade of ornamental fish from Amazonas State mainly consists of wild species. A total of 142,552,253 specimens were exported during the studied period. Sales plummeted since 2006 from 26,075,241 specimens exported to 2,729,846 specimens in 2015 (Jan-Jul). Between 2006 and 2015, a total of US$ 23.0 million in revenue was generated from fish exports destined to 35 countries. Germany, Taiwan, USA and Japan accounted for 75.5% of the volume and 76.7% of the value exported. During this time 375 species were exported, included Paracheirodon axelrodi, P. simulans, Hemigrammus bleheri, Otociclus affinis and O. hoppei that together represented 84.5% of exports. Thirty of them are not on the list of Brazilian Institute of the Environment and Renewable Natural Resources IBAMA species released for export, and six are currently on the list of endangered fauna of Brazil: Hopliancistrus tricornis, Leporacanthicus joselimai, Parancistrus nudiventris, Peckoltia compta, Scobinancistrus auratus and S. pariolispos. The collection of this information can help producers, managers and environmentalists in the elaboration of the political policies to establish regulations to govern the trade.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"11 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87867704","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}
Pub Date : 2021-03-26DOI: 10.20950/1678-2305.2020.46.4.592
Jackellynne Fernanda Farias Fernandes, J. Freitas, Yago Bruno Silveira Nunes, R. Lobato, Marina Bezerra Figueiredo
The feeding habit of lane snapper Lutjanus synagris was analyzed qualitatively and quantitatively, related to seasonality, its ontogenetic development, and the relationship between food and biotic and abiotic conditions on the Amazon Coast of Maranhão, between June 2018 and May 2019. Numerical, gravimetric, and ecological index methods were used to show the relative importance or preference of a category or food item in the diet. The food composition was studied related to the sex, size of the predator and seasonality. Of 359 stomachs sampled, 54 were empty due to regurgitation and presented a vacuity coefficient (Cv%) of 15.04%. In the analysis of diets between the sexes, it was possible to identify a greater participation of fish (30.43%) and Crabs (26.10%) for females, Shrimp (36.23%) and Organic Matter Not Identified (OMNI) (18.84%) in males. The diet showed spatial differences in length distributions. The analysis of stomach contents showed the presence synthetic materials (mesoplastics ranging from 5.0 mm to 2.5 cm) in 5.52% of the samples. The main food items found were from the Brachyura and Caridea species. The results clearly demonstrate that lane snapper prefers benthic prey, presenting a carnivorous and generalist-opportunistic habit. Its diet is also composed of demersal-pelagic species, such as Cephalopods and Teleost fish.
2018年6月至2019年5月，对maranh亚马孙河沿岸梭鲈(lujanus synagris)的食性、季节性、个体发育、食物与生物和非生物条件的关系进行了定性和定量分析。数值法、重量法和生态指数法被用来显示饮食中一个类别或食物项目的相对重要性或偏好。研究了食物组成与捕食者的性别、体型和季节的关系。在359个胃样本中，54个胃因反流而空，其真空系数(Cv%)为15.04%。在两性之间的饮食分析中，可以确定雌性中鱼类(30.43%)和螃蟹(26.10%)的比例更高，雄性中虾(36.23%)和未识别有机物(OMNI)(18.84%)的比例更高。日粮长度分布存在空间差异。胃内容物分析显示，5.52%的样品中存在合成材料(5.0 mm ~ 2.5 cm的中塑料)。发现的主要食物来自短尾目和栉齿目。结果清楚地表明，鲷鱼偏爱底栖动物，表现出食肉性和多方位机会主义的习性。它的饮食也包括底栖-远洋物种，如头足类和硬骨鱼。
{"title":"FEEDING HABITS OF Lutjanus synagris (TELEOSTEI: LUTJANIDAE) IN THE AMAZON COAST OF THE NORTHEAST REGION OF BRAZIL","authors":"Jackellynne Fernanda Farias Fernandes, J. Freitas, Yago Bruno Silveira Nunes, R. Lobato, Marina Bezerra Figueiredo","doi":"10.20950/1678-2305.2020.46.4.592","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.592","url":null,"abstract":"The feeding habit of lane snapper Lutjanus synagris was analyzed qualitatively and quantitatively, related to seasonality, its ontogenetic development, and the relationship between food and biotic and abiotic conditions on the Amazon Coast of Maranhão, between June 2018 and May 2019. Numerical, gravimetric, and ecological index methods were used to show the relative importance or preference of a category or food item in the diet. The food composition was studied related to the sex, size of the predator and seasonality. Of 359 stomachs sampled, 54 were empty due to regurgitation and presented a vacuity coefficient (Cv%) of 15.04%. In the analysis of diets between the sexes, it was possible to identify a greater participation of fish (30.43%) and Crabs (26.10%) for females, Shrimp (36.23%) and Organic Matter Not Identified (OMNI) (18.84%) in males. The diet showed spatial differences in length distributions. The analysis of stomach contents showed the presence synthetic materials (mesoplastics ranging from 5.0 mm to 2.5 cm) in 5.52% of the samples. The main food items found were from the Brachyura and Caridea species. The results clearly demonstrate that lane snapper prefers benthic prey, presenting a carnivorous and generalist-opportunistic habit. Its diet is also composed of demersal-pelagic species, such as Cephalopods and Teleost fish.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"41 3","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72612129","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}
Pub Date : 2021-03-01DOI: 10.20950/1678-2305.2020.46.4.603
Cesar Santos, Roberto Schwarz Júnior, H. Pichler, O. R. Cardoso, M. R. Lamour, H. Spach
The composition and structure of fish assemblages in the inner continental shelf of the Paraná State are affected by cold fronts and the rainfall regime. Data from fishing activities in this region, as well as the analysis of environmental characteristics, are the main tools available for understanding fish dynamics, under influence of increasing human activities. In order to better understand patterns and temporal variations in fish assemblages in the inner continental shelf of the Paraná State, a total of 24 double trawls were performed with an otter trawl between August 2000 and July 2001, in two sampling areas, the North area in front of the northern mouth of the Paranaguá Estuary Complex, and the South area, in front of the Leste beach. A total of 45,277 fish specimens belonging to 35 families and 97 species were caught. Sciaenidae was the most abundant family, with 37.1% of the total number of individuals caught, and with the highest richness (18 species). Statistical analyses evidenced significant differences in environmental characteristics and in fish fauna, and that both areas disturbances were observed in the fish assemblages during the dry and wet season, being more intense in the Southern area, disturbances that would be related to the shrimp fishing present in the two areas sampled in this study.
{"title":"ICHTHYOFAUNA IN THE INNER CONTINENTAL SHELF NEXT TO THE PARANAGUÁ ESTUARINE COMPLEX, SOUTHERN BRAZIL","authors":"Cesar Santos, Roberto Schwarz Júnior, H. Pichler, O. R. Cardoso, M. R. Lamour, H. Spach","doi":"10.20950/1678-2305.2020.46.4.603","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.603","url":null,"abstract":"The composition and structure of fish assemblages in the inner continental shelf of the Paraná State are affected by cold fronts and the rainfall regime. Data from fishing activities in this region, as well as the analysis of environmental characteristics, are the main tools available for understanding fish dynamics, under influence of increasing human activities. In order to better understand patterns and temporal variations in fish assemblages in the inner continental shelf of the Paraná State, a total of 24 double trawls were performed with an otter trawl between August 2000 and July 2001, in two sampling areas, the North area in front of the northern mouth of the Paranaguá Estuary Complex, and the South area, in front of the Leste beach. A total of 45,277 fish specimens belonging to 35 families and 97 species were caught. Sciaenidae was the most abundant family, with 37.1% of the total number of individuals caught, and with the highest richness (18 species). Statistical analyses evidenced significant differences in environmental characteristics and in fish fauna, and that both areas disturbances were observed in the fish assemblages during the dry and wet season, being more intense in the Southern area, disturbances that would be related to the shrimp fishing present in the two areas sampled in this study.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"46 1","pages":"1-13"},"PeriodicalIF":0.4,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87157888","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}
Pub Date : 2021-03-01DOI: 10.20950/1678-2305.2020.46.4.601
Helen Cristina PARAZZI de Freitas, C. Doria, R. Sousa
In the Amazon region, fisheries play an important role in the socioeconomic and cultural context and are directly affected by changes in the hydrological cycle, which can interfere with the numbers and frequency of fish species landed. This study analyzed the variation of fishery production against the seasonality of the water level of the Guaporé River (a tributary of the Madeira River) using information contained in the records of fishery landings in the area under study. In addition, two periods pre (2000 to 2008) and post (2009 to 2019) installation of the Jirau and Santo Antônio dams in the Madeira River were considered. Fish production in the period prior to damming indicated linearity (r2 = 0.41) which was inversely proportional to the water levels of the Guaporé River, with low fish production in the flood and high production during the low water phases. However, for the period after damming, these variables showed low correlation (r2 = 0.14). Among the fish species exploited, 35.13% presented significant differences (p <0.05) between the production values for the periods before and after installation of the dams. Therefore, the results showed significant differences between the values of fishery production by species and phases of the hydrological cycle of the Guaporé River, which occurred in the periods pre and post damming of the Madeira River, which indicates that the hydroelectric dams have negatively impacted the fish stocks of this region. The information contained in this study is useful and serves as a basis for coherent decision-making, since it aids in the sustainable management and monitoring of fish stocks in the Madeira River Basin.
{"title":"HYDROELECTRIC DAMS FROM MADEIRA RIVER SEASONALLY IMPACTS THE FISHERIES PRODUCTION IN THE GUAPORÉ BASIN (RONDÔNIA, BRAZIL)","authors":"Helen Cristina PARAZZI de Freitas, C. Doria, R. Sousa","doi":"10.20950/1678-2305.2020.46.4.601","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.601","url":null,"abstract":"In the Amazon region, fisheries play an important role in the socioeconomic and cultural context and are directly affected by changes in the hydrological cycle, which can interfere with the numbers and frequency of fish species landed. This study analyzed the variation of fishery production against the seasonality of the water level of the Guaporé River (a tributary of the Madeira River) using information contained in the records of fishery landings in the area under study. In addition, two periods pre (2000 to 2008) and post (2009 to 2019) installation of the Jirau and Santo Antônio dams in the Madeira River were considered. Fish production in the period prior to damming indicated linearity (r2 = 0.41) which was inversely proportional to the water levels of the Guaporé River, with low fish production in the flood and high production during the low water phases. However, for the period after damming, these variables showed low correlation (r2 = 0.14). Among the fish species exploited, 35.13% presented significant differences (p <0.05) between the production values for the periods before and after installation of the dams. Therefore, the results showed significant differences between the values of fishery production by species and phases of the hydrological cycle of the Guaporé River, which occurred in the periods pre and post damming of the Madeira River, which indicates that the hydroelectric dams have negatively impacted the fish stocks of this region. The information contained in this study is useful and serves as a basis for coherent decision-making, since it aids in the sustainable management and monitoring of fish stocks in the Madeira River Basin.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"17 1","pages":"1-11"},"PeriodicalIF":0.4,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75178995","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}
Pub Date : 2021-03-01DOI: 10.20950/1678-2305.2020.46.4.610
Joelson Musiello-Fernandes, Pablo da Costa Oliveira, S. C. A. Araujo, J. Abreu, A. D. Di Beneditto, A. A. Braga, M. Hostim-Silva, C. Zappes
Artisanal fishing is an important traditional activity on the coast of Espírito Santo (ES) State, southeastern Brazil. Despite this, there is a lack of updated data on artisanal fishing and its interfaces with socioenvironmental oceanography. The present study describes the social profile of fishers (gender, age, education, and period of professional activity) and the fishing activity (fishing gear and target species) along the coast of Espírito Santo State. Interviews with semi-structured questionnaires were carried out with 366 artisanal fishers living in 10 fishing communities. The interviewed fishers are mostly male, with low education, who had been fishing for more than 41 years (32%). The fishers described 59 target ethnospecies, with eight being common in 90% (n = 9) of the communities under study. These workers use the following fishing gear: line, longline, gillnet, trawl net, and harpoon. Socioenvironmental oceanography enables obtaining basic information on artisanal fishing, which can support the development of public policies for the sector with a view to maintaining this activity in Espírito Santo State.
{"title":"ARTISANAL FISHING ON THE COAST OF ESPÍRITO SANTO STATE, SOUTHEASTERN BRAZIL: AN APPROACH TO SOCIOENVIRONMENTAL OCEANOGRAPHY","authors":"Joelson Musiello-Fernandes, Pablo da Costa Oliveira, S. C. A. Araujo, J. Abreu, A. D. Di Beneditto, A. A. Braga, M. Hostim-Silva, C. Zappes","doi":"10.20950/1678-2305.2020.46.4.610","DOIUrl":"https://doi.org/10.20950/1678-2305.2020.46.4.610","url":null,"abstract":"Artisanal fishing is an important traditional activity on the coast of Espírito Santo (ES) State, southeastern Brazil. Despite this, there is a lack of updated data on artisanal fishing and its interfaces with socioenvironmental oceanography. The present study describes the social profile of fishers (gender, age, education, and period of professional activity) and the fishing activity (fishing gear and target species) along the coast of Espírito Santo State. Interviews with semi-structured questionnaires were carried out with 366 artisanal fishers living in 10 fishing communities. The interviewed fishers are mostly male, with low education, who had been fishing for more than 41 years (32%). The fishers described 59 target ethnospecies, with eight being common in 90% (n = 9) of the communities under study. These workers use the following fishing gear: line, longline, gillnet, trawl net, and harpoon. Socioenvironmental oceanography enables obtaining basic information on artisanal fishing, which can support the development of public policies for the sector with a view to maintaining this activity in Espírito Santo State.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"8 1","pages":"1-11"},"PeriodicalIF":0.4,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73161496","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}
Pub Date : 2021-01-01DOI: 10.20950/1678-2305/bip.2021.47.e627
Kristhian Franchesco Paul PINAZO Beltran, Jesús Miguel Angel BERRÚ Beltran, E. B. BOCARDO Delgado
The prawn (Cryphiops caementarius) is the only resource in the Peruvian coastal rivers that supports a commercial fishery. Bioeconomic-fishing aspects are reported based on data (fishing, costs and income derived from fishing) acquired in situ monthly in four altitudinal strata (every 200 meters above sea level - masl) of the Majes-Camaná river during 2019. The catch per unit of effort (CPUE) was expressed in kg h-1, monthly income was estimated based on the average catch values, number of tasks and price of the resource. To evaluate the profitability of the activity of an average fisherman (by stratum), a cash flow based on income and expenses was executed under situations with a constant future, using economic profitability indicators such as the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost ratio (B/C) and Discounted Payback Period (DPB). There was a predominance of the diving method, the catches (kg) and the fishing yield increased throughout the fishing period (April-December) with a maximum value of 4.8 kg h-1 (December - high strata). Investment costs per fisherman were low, roughly 1,000 soles. The sale price increases with altitude, decreasing over the course of the year depending on the availability of the resource; the monthly income per fisherman varied from 964 soles (April - low stratum) to 6,760 soles (December - high stratum). The economic simulation model showed that the income exceeded the costs of the fishing activity from the first year of activity in all the altitudinal strata, the economic profitability indicators showed high profitability for the activity.
对虾(隐虾)是秘鲁沿海河流中唯一支持商业渔业的资源。生物经济捕鱼方面的报告是基于2019年期间在马耶斯-卡马纳河四个垂直地层(海拔每200米)每月就地获得的数据(捕鱼、捕鱼成本和收入)。单位努力渔获量(CPUE)以kg h-1表示，月收入根据平均渔获量、任务数和资源价格估算。为了评估普通渔民(按阶层)活动的盈利能力，在未来不变的情况下，使用净现值(NPV)、内部收益率(IRR)、收益成本比(B/C)和贴现回收期(DPB)等经济盈利指标，计算基于收入和支出的现金流。在整个捕捞期(4 - 12月)，渔获量(kg)和渔获量均呈上升趋势，最高值为4.8 kg h-1(12月-高地层)。每位渔民的投资成本很低，约为1,000鳎。销售价格随着海拔的增加而增加，根据资源的可用性在一年中下降;每个渔民的月收入从964底(4月-低地层)到6760底(12月-高地层)不等。经济模拟模型表明，在所有海拔层，捕捞活动第一年的收益都超过了捕捞活动的成本，经济盈利指标显示该活动具有较高的盈利能力。
{"title":"ECONOMIC-FISHING ANALYSIS OF THE PRAWN Cryphiops caementarius (MOLINA, 1782) IN THE MAJES-CAMANÁ RIVER AREQUIPA-PERÚ (2019)","authors":"Kristhian Franchesco Paul PINAZO Beltran, Jesús Miguel Angel BERRÚ Beltran, E. B. BOCARDO Delgado","doi":"10.20950/1678-2305/bip.2021.47.e627","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e627","url":null,"abstract":"The prawn (Cryphiops caementarius) is the only resource in the Peruvian coastal rivers that supports a commercial fishery. Bioeconomic-fishing aspects are reported based on data (fishing, costs and income derived from fishing) acquired in situ monthly in four altitudinal strata (every 200 meters above sea level - masl) of the Majes-Camaná river during 2019. The catch per unit of effort (CPUE) was expressed in kg h-1, monthly income was estimated based on the average catch values, number of tasks and price of the resource. To evaluate the profitability of the activity of an average fisherman (by stratum), a cash flow based on income and expenses was executed under situations with a constant future, using economic profitability indicators such as the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost ratio (B/C) and Discounted Payback Period (DPB). There was a predominance of the diving method, the catches (kg) and the fishing yield increased throughout the fishing period (April-December) with a maximum value of 4.8 kg h-1 (December - high strata). Investment costs per fisherman were low, roughly 1,000 soles. The sale price increases with altitude, decreasing over the course of the year depending on the availability of the resource; the monthly income per fisherman varied from 964 soles (April - low stratum) to 6,760 soles (December - high stratum). The economic simulation model showed that the income exceeded the costs of the fishing activity from the first year of activity in all the altitudinal strata, the economic profitability indicators showed high profitability for the activity.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"139 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74884294","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}
Pub Date : 2021-01-01DOI: 10.20950/1678-2305/bip.2021.47.e643
Fabiano Müller Silva, B. C. Silva, V. Cerqueira
Two growth stages of juvenile snook (Centropomus undecimalis) under three different densities were evaluated: 10, 20, and 40 fish m-3, in 2.5-m3 cages with 12-mm mesh. In phase I, snooks of 72.0 g and 21.2 cm were raised for 270 days. In phase II, snooks of 204.6 g and 29.2 cm were raised for 202 days. The average water temperature and salinity were 24.3°C and 34.5, respectively, at Santa Catarina Island, Brazil. The data were evaluated using regression models. Density increase did not influence survival rate, with 51.0% (phase I) and 88.7% (phase II). The density of 20 fish m-3 provided the best results, such as body weight, in the two phases, with 215.7 and 364.7 g, respectively. Water temperature was the main limiting factor for the growth of snook. Therefore, in a subtropical climate, it is recommended to start growing in the spring (> 24°C) and avoid handling fish when the temperature is below 20°C. Regression analysis on the final weight showed that densities of 24 fish m-3 could be indicated for common snook under the conditions of this study.
{"title":"DIFFERENT DENSITIES OF COMMON SNOOK REARED IN MARINE CAGES IN SOUTHERN BRAZIL","authors":"Fabiano Müller Silva, B. C. Silva, V. Cerqueira","doi":"10.20950/1678-2305/bip.2021.47.e643","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e643","url":null,"abstract":"Two growth stages of juvenile snook (Centropomus undecimalis) under three different densities were evaluated: 10, 20, and 40 fish m-3, in 2.5-m3 cages with 12-mm mesh. In phase I, snooks of 72.0 g and 21.2 cm were raised for 270 days. In phase II, snooks of 204.6 g and 29.2 cm were raised for 202 days. The average water temperature and salinity were 24.3°C and 34.5, respectively, at Santa Catarina Island, Brazil. The data were evaluated using regression models. Density increase did not influence survival rate, with 51.0% (phase I) and 88.7% (phase II). The density of 20 fish m-3 provided the best results, such as body weight, in the two phases, with 215.7 and 364.7 g, respectively. Water temperature was the main limiting factor for the growth of snook. Therefore, in a subtropical climate, it is recommended to start growing in the spring (> 24°C) and avoid handling fish when the temperature is below 20°C. Regression analysis on the final weight showed that densities of 24 fish m-3 could be indicated for common snook under the conditions of this study.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79790327","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}
Pub Date : 2021-01-01DOI: 10.20950/1678-2305/bip.2021.47.e621
J. Ferraz, D. Garcia, A. C. R. Casimiro, I. Geller, F. S. Almeida, M. Orsi
Studies on length-weight relationships are of great importance in fishery assessments. These studies are substantial to evaluate fish population dynamics, and in communion with the relative condition factor, could provide an estimation of potential acting environmental conditions. In this paper, we evaluated the length weight relationship and relative condition factor of small sized fish species. Fish were sampled quarterly between the years 2012-2013 and 2018-2020 in lagoons and tributaries of Rosana and Taquaruçu reservoirs, located at the lower Paranapanema River basin, Brazil. The standard length (SL) in millimeters and weight (W) in grams were measured, and the length-weight relationship was calculated using linear regression analysis (W = log (a) + b log (SL)). After, the relative condition factor (Kn) was calculated from the expression We = a.SLb. Thus, the length-weight relationships of 31 species were calculated in each environment considered, giving rise to 74 population allometric coefficients (b) and relative condition factors (Kn). As result, 24 b coefficients were concentrated between 2.5 and 3.5 and seven were out of the confidence interval, while the 74 Kn values demonstrated close to the central mean and not statistical different. Our results are relevant to the conservation of fish fauna, improving knowledge regarding small-sized fish and those living environment.
{"title":"LENGTH-WEIGHT RELATIONSHIP AND RELATIVE CONDITION FACTOR OF 31 SMALL-SIZED FISHES OF THE PARANAPANEMA RIVER BASIN","authors":"J. Ferraz, D. Garcia, A. C. R. Casimiro, I. Geller, F. S. Almeida, M. Orsi","doi":"10.20950/1678-2305/bip.2021.47.e621","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e621","url":null,"abstract":"Studies on length-weight relationships are of great importance in fishery assessments. These studies are substantial to evaluate fish population dynamics, and in communion with the relative condition factor, could provide an estimation of potential acting environmental conditions. In this paper, we evaluated the length weight relationship and relative condition factor of small sized fish species. Fish were sampled quarterly between the years 2012-2013 and 2018-2020 in lagoons and tributaries of Rosana and Taquaruçu reservoirs, located at the lower Paranapanema River basin, Brazil. The standard length (SL) in millimeters and weight (W) in grams were measured, and the length-weight relationship was calculated using linear regression analysis (W = log (a) + b log (SL)). After, the relative condition factor (Kn) was calculated from the expression We = a.SLb. Thus, the length-weight relationships of 31 species were calculated in each environment considered, giving rise to 74 population allometric coefficients (b) and relative condition factors (Kn). As result, 24 b coefficients were concentrated between 2.5 and 3.5 and seven were out of the confidence interval, while the 74 Kn values demonstrated close to the central mean and not statistical different. Our results are relevant to the conservation of fish fauna, improving knowledge regarding small-sized fish and those living environment.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"41 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88488950","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}
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