Pub Date : 2021-01-01DOI: 10.20950/1678-2305/bip.2021.47.e639
H. Beltrão, E. S. Magalhães, Zehev Schwartz Benzaken, R. Sousa
The trafficking of ornamental fish is growing on a yearly basis in the Brazilian Amazon. This represents a serious threat to the biodiversity of the region. The objective of this research was to evaluate the trafficking of ornamental fish in the Brazilian Amazon using data from the seizures by the Federal Police and Brazilian Institute of Environment and Renewable Natural Resources - IBAMA. To assess and quantify this illegal trade, we gathered data relating to the period between January 2003 and January 2020. Information was obtained from IBAMA - Amazon - regional superintendence; National Amazon Research Institute - INPA regarding smuggled species that have been recovered and placed in its fish collection. The results show that in 98 seizures made by IBAMA, a total of 170,849 specimens of at least 73 species of 10 families, and 5 orders were recovered. Most of the illegally trafficked species are from the Loricariidae family (31 species, 8.47%). Hypancistrus zebra (Loricariidae), Potamotrygon jabuti, Potamotrygon leopoldi (Potamotrygonidae), Osteoglossum bicirrhosum and Osteoglossum ferreirai (Osteoglossidae) are the most targeted by the traffickers, due to their high value. At least 12 species are undescribed new species and were registered and placed in INPA’s fish collection. The fish followed different routes to reach the border that Brazil, Colombia, and Peru share. We conclude that in order to fight this illegal trade, tougher laws against smugglers, agreements with neighboring countries to combat trafficking, formal environmental education programs for riverine populations, and further scientific studies of smuggled species are necessary.
{"title":"TRAFFICKING OF ORNAMENTAL FISH IN THE BRAZILIAN AMAZON","authors":"H. Beltrão, E. S. Magalhães, Zehev Schwartz Benzaken, R. Sousa","doi":"10.20950/1678-2305/bip.2021.47.e639","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e639","url":null,"abstract":"The trafficking of ornamental fish is growing on a yearly basis in the Brazilian Amazon. This represents a serious threat to the biodiversity of the region. The objective of this research was to evaluate the trafficking of ornamental fish in the Brazilian Amazon using data from the seizures by the Federal Police and Brazilian Institute of Environment and Renewable Natural Resources - IBAMA. To assess and quantify this illegal trade, we gathered data relating to the period between January 2003 and January 2020. Information was obtained from IBAMA - Amazon - regional superintendence; National Amazon Research Institute - INPA regarding smuggled species that have been recovered and placed in its fish collection. The results show that in 98 seizures made by IBAMA, a total of 170,849 specimens of at least 73 species of 10 families, and 5 orders were recovered. Most of the illegally trafficked species are from the Loricariidae family (31 species, 8.47%). Hypancistrus zebra (Loricariidae), Potamotrygon jabuti, Potamotrygon leopoldi (Potamotrygonidae), Osteoglossum bicirrhosum and Osteoglossum ferreirai (Osteoglossidae) are the most targeted by the traffickers, due to their high value. At least 12 species are undescribed new species and were registered and placed in INPA’s fish collection. The fish followed different routes to reach the border that Brazil, Colombia, and Peru share. We conclude that in order to fight this illegal trade, tougher laws against smugglers, agreements with neighboring countries to combat trafficking, formal environmental education programs for riverine populations, and further scientific studies of smuggled species are necessary.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"5 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78574211","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.e642
M Beheşti Aydoğan, O. Uysal
This study’s main objective was to estimate sea bass farms’ technical efficiency and determine the factors affecting production inefficiency using the stochastic frontier approach. The data were collected using questionnaires from 71 farms in 2017. The total sea bass production cost was calculated 5.35 $ kg-1, income 5.65 $ kg-1, gross profit 0.30 $ kg-1. The proportion of variable costs (84.25%) in total costs was higher than the fixed costs (15.75%). The feed cost (57.56%) was the influential primary variable on the total costs, and the benefit-cost ratio was 1.06. The results indicated that seabass farms’ technical efficiency varied between 0.67 to 1.00, and the average was 0.82. The efficiency scores meant the farms could achieve the same production amount by reducing inputs by 18%. One per cent increase in resale value, feed amount, and fingerling amount, increase sea bass production by 0.4%, 0.4%, and 0.2%, respectively. Fish loss rates and subsidies were influential on inefficiency. It would be beneficial to minimize risk factors such as fish loss rates and carry out political and educational activities to improve farms’ infrastructure in breeding and marketing. As a result, policymakers should also include the effective use of production factors in the design of aquaculture subsidy policies.
{"title":"ANALYSIS OF THE TECHNICAL EFFICIENCY OF EUROPEAN SEA BASS FARMS IN TURKEY: A STOCHASTIC FRONTIER PRODUCTION FUNCTION APPROACH","authors":"M Beheşti Aydoğan, O. Uysal","doi":"10.20950/1678-2305/bip.2021.47.e642","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e642","url":null,"abstract":"This study’s main objective was to estimate sea bass farms’ technical efficiency and determine the factors affecting production inefficiency using the stochastic frontier approach. The data were collected using questionnaires from 71 farms in 2017. The total sea bass production cost was calculated 5.35 $ kg-1, income 5.65 $ kg-1, gross profit 0.30 $ kg-1. The proportion of variable costs (84.25%) in total costs was higher than the fixed costs (15.75%). The feed cost (57.56%) was the influential primary variable on the total costs, and the benefit-cost ratio was 1.06. The results indicated that seabass farms’ technical efficiency varied between 0.67 to 1.00, and the average was 0.82. The efficiency scores meant the farms could achieve the same production amount by reducing inputs by 18%. One per cent increase in resale value, feed amount, and fingerling amount, increase sea bass production by 0.4%, 0.4%, and 0.2%, respectively. Fish loss rates and subsidies were influential on inefficiency. It would be beneficial to minimize risk factors such as fish loss rates and carry out political and educational activities to improve farms’ infrastructure in breeding and marketing. As a result, policymakers should also include the effective use of production factors in the design of aquaculture subsidy policies.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"2010 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73772116","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.e676
Igor de Fiuza França, G. M. Heluy, É. Schultz, Wilson de Oliveira Vianna, M. M. Pereira, L. R. V. Ramos
The present study evaluated the influence of thermal management during the larviculture of Betta splendens on survival and sex ratio, aiming to increase the proportion of males. Newly hatched larvae were subjected to different thermal regimes, namely, T25, T28, T30 and T33 (25, 28, 30 and 33ºC, respectively). The experiment was laid out in a completely randomized design, with 4 treatments and 10 repetitions. Thermal treatment was maintained until 15 days post-hatch (DPH). Mortality was determined at the end of the thermal regime and again at 45 DPH. At the end of the experiment, the number of males and females obtained in the different thermal treatments was counted to analyze the obtained sex ratio. There was a significant effect on mortality as a function of temperature only at 15 DPH (p <0.001), with the lowest values recorded in treatments T25, T28 and T30. In terms of sex ratio, up to 65% of males were obtained in treatment T33 (p = 0.037). In conclusion, thermal management during the larval period can be a strategy to increase the proportion of males, but the increase in mortality due to the rise in temperature should be considered.
{"title":"SEX REVERSAL IN SIAMESE FIGHTING FISH LARVAE BY THERMAL MANAGEMENT","authors":"Igor de Fiuza França, G. M. Heluy, É. Schultz, Wilson de Oliveira Vianna, M. M. Pereira, L. R. V. Ramos","doi":"10.20950/1678-2305/bip.2021.47.e676","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e676","url":null,"abstract":"The present study evaluated the influence of thermal management during the larviculture of Betta splendens on survival and sex ratio, aiming to increase the proportion of males. Newly hatched larvae were subjected to different thermal regimes, namely, T25, T28, T30 and T33 (25, 28, 30 and 33ºC, respectively). The experiment was laid out in a completely randomized design, with 4 treatments and 10 repetitions. Thermal treatment was maintained until 15 days post-hatch (DPH). Mortality was determined at the end of the thermal regime and again at 45 DPH. At the end of the experiment, the number of males and females obtained in the different thermal treatments was counted to analyze the obtained sex ratio. There was a significant effect on mortality as a function of temperature only at 15 DPH (p <0.001), with the lowest values recorded in treatments T25, T28 and T30. In terms of sex ratio, up to 65% of males were obtained in treatment T33 (p = 0.037). In conclusion, thermal management during the larval period can be a strategy to increase the proportion of males, but the increase in mortality due to the rise in temperature should be considered.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"51 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83468792","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.e665
P. V. N. Araújo, A. B. Moraes, F. Lucena Frédou, F. A. Freire
The aim of this scientific note was to evaluate the influence of the coastal current on the estimation of relative abundance indices for small-scale marine shrimp trawling to indicate the best relative abundance index to be used for stock assessment and conservation. Georeferenced experimental trawls were carried out with standardized equipment and capture time on the coast of Rio Grande do Norte, northeastern Brazil. Drags followed convergent and divergent orientations in relation to the flow of the local coastal current. The results showed that the direction of the coastal current flow directly influences the distances and drag shifts, generating variations in the sampling effort and, consequently, bias when using Catch per Unit Effort (CPUE) as a relative abundance index. Conversely, the adoption of Catch per Unit of Swept Area (CPUA) as an index of relative abundance for shrimp trawling becomes more suitable since the variations in the distances of trawl shifts are perceptible through this index.
{"title":"THE INFLUENCE OF THE COASTAL CURRENT ON THE ESTIMATION OF RELATIVE ABUNDANCE INDICES IN SMALL-SCALE SHRIMP FISHERY","authors":"P. V. N. Araújo, A. B. Moraes, F. Lucena Frédou, F. A. Freire","doi":"10.20950/1678-2305/bip.2021.47.e665","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e665","url":null,"abstract":"The aim of this scientific note was to evaluate the influence of the coastal current on the estimation of relative abundance indices for small-scale marine shrimp trawling to indicate the best relative abundance index to be used for stock assessment and conservation. Georeferenced experimental trawls were carried out with standardized equipment and capture time on the coast of Rio Grande do Norte, northeastern Brazil. Drags followed convergent and divergent orientations in relation to the flow of the local coastal current. The results showed that the direction of the coastal current flow directly influences the distances and drag shifts, generating variations in the sampling effort and, consequently, bias when using Catch per Unit Effort (CPUE) as a relative abundance index. Conversely, the adoption of Catch per Unit of Swept Area (CPUA) as an index of relative abundance for shrimp trawling becomes more suitable since the variations in the distances of trawl shifts are perceptible through this index.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"8 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89281884","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.e604
Severiano Pereira BRAZ NETO, Antônio Marcos de Melo Xavier, C. R. DE MESQUITA, Laudiceia de ABREU COSTA, Flávia Roseira dos Reis, I. Cintra, T. Giarrizzo, B. Bentes
Dams cause profound changes in the structure of environments and local fishing practices. One example of these impacts is the Tucuruí dam, in the southeast of the state of Pará, in northern Brazil. The changes were gradual, but eventually established unique fishery systems and capture techniques that were consolidated over time. The present study used a rapid analysis technique based on the Métier principle to identify 14 fishing systems with distinct characteristics, although a more holistic approach (dimensions: economic, social, technological, and management), supported the identification of four clearly distinguishable groups. From the management perspective, studies of this type are important because they permit the establishment of more effective practices based on the deficiencies found in the different systems or their respective groups.
{"title":"MULTIDISCIPLINARY APPROACH TO IDENTIFICATION OF FISHERY SYSTEMS IN AMAZONIAN RESERVOIR: CASE STUDY IN TUCURUÍ DAM","authors":"Severiano Pereira BRAZ NETO, Antônio Marcos de Melo Xavier, C. R. DE MESQUITA, Laudiceia de ABREU COSTA, Flávia Roseira dos Reis, I. Cintra, T. Giarrizzo, B. Bentes","doi":"10.20950/1678-2305/bip.2021.47.e604","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e604","url":null,"abstract":"Dams cause profound changes in the structure of environments and local fishing practices. One example of these impacts is the Tucuruí dam, in the southeast of the state of Pará, in northern Brazil. The changes were gradual, but eventually established unique fishery systems and capture techniques that were consolidated over time. The present study used a rapid analysis technique based on the Métier principle to identify 14 fishing systems with distinct characteristics, although a more holistic approach (dimensions: economic, social, technological, and management), supported the identification of four clearly distinguishable groups. From the management perspective, studies of this type are important because they permit the establishment of more effective practices based on the deficiencies found in the different systems or their respective groups.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"62 4 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77528587","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.e666
Cassia Barbosa Constantinidis, M. C. D. Araujo
Food acceptance in different larval stages of Macrobrachium carcinus was evaluated by investigating the stage at which the ingestion of inert moist diet food begins and by the incidence of Artemia nauplii and inert moist diet in the digestive tract throughout development. Two experiments were carried out: in the first study, the acceptance of the inert diet was evaluated in 60 larvae of each stage (I to XII) fed ad libitum after two hours of fasting. The inert diet was 100% accepted at zoea stage V. In the second study, newly hatched larva was then kept in larval tanks and fed with Artemia nauplii and inert moist diet simultaneously. Fifteen minutes after feeding, 50 specimens of each larval stage were examined and evaluated for the ingestion of these foods. Larvae at stage I did not feed, while larvae at stage II consumed both live and inert food. From the stage of zoea IX, the exclusive consumption of Artemia nauplii was not verified. These data indicate that feeding M. carcinus in larviculture can be initiated at stage II with inert moist diet and Artemia nauplii, and an exclusive supply of inert moist diet from stage IX can be recommended.
{"title":"FOOD ACCEPTANCE IN DIFFERENT LARVAL STAGES OF Macrobrachium carcinus","authors":"Cassia Barbosa Constantinidis, M. C. D. Araujo","doi":"10.20950/1678-2305/bip.2021.47.e666","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e666","url":null,"abstract":"Food acceptance in different larval stages of Macrobrachium carcinus was evaluated by investigating the stage at which the ingestion of inert moist diet food begins and by the incidence of Artemia nauplii and inert moist diet in the digestive tract throughout development. Two experiments were carried out: in the first study, the acceptance of the inert diet was evaluated in 60 larvae of each stage (I to XII) fed ad libitum after two hours of fasting. The inert diet was 100% accepted at zoea stage V. In the second study, newly hatched larva was then kept in larval tanks and fed with Artemia nauplii and inert moist diet simultaneously. Fifteen minutes after feeding, 50 specimens of each larval stage were examined and evaluated for the ingestion of these foods. Larvae at stage I did not feed, while larvae at stage II consumed both live and inert food. From the stage of zoea IX, the exclusive consumption of Artemia nauplii was not verified. These data indicate that feeding M. carcinus in larviculture can be initiated at stage II with inert moist diet and Artemia nauplii, and an exclusive supply of inert moist diet from stage IX can be recommended.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"90 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78708842","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.e658
Márcio Luís Chagas Macedo, Sérgio Ricardo Santos, Maurício Düppré de Abreu, Hugo Zecchim, Karina A. Keunecke, Geraldo Timoteo, M. Vianna
Araruama Lagoon (Rio de Janeiro) is the largest hypersaline lagoon in South America. The aim of this study was to survey fishing landings, capture areas and production at this lagoon, in addition to analyzing data from the Pescarte Census. Fishing landings were monitored daily by community agents from March to August/2009, through the Petrobras Mosaico Program. Thirteen landing points were identified in five municipalities, totaling 8,096 recorded landings, and accumulating 469.1 tonnes. São Pedro da Aldeia (39.6%), Arraial do Cabo (27.7%) and areas in the central region (37.6%) and the south coast (29.1%) of the lagoon presented the highest landings and catch volumes. Twelve species were identified, mainly Pogonias courbina (48.9%) and Penaeus spp (33.8%), and gillnets were the most important fishing gear. Very few studies have addressed fishing at Araruama Lagoon, leading to current planning measures supported by little data. We advocate a participatory review of current regulations, to better address gillnet fishing and the capture of different fish species. This study is the result of research financed by the Pescarte Environmental Education Project, a mitigation measure required by the Federal Environmental Licensing, conducted by IBAMA.
Araruama泻湖(里约热内卢)是南美洲最大的高盐泻湖。除了分析Pescarte普查数据外，本研究的目的是调查该泻湖的捕鱼登陆、捕捞面积和产量。2009年3月至8月期间，通过巴西国家石油公司马赛克项目，社区工作人员每天监测渔业登陆情况。在五个城市确定了13个着陆点，总共记录了8096次降落，累积了469.1吨。 o Pedro da Aldeia(39.6%)、Arraial do Cabo(27.7%)以及泻湖中部地区(37.6%)和南海岸(29.1%)的登陆量和捕捞量最高。共鉴定出12种鱼类，以库尔滨Pogonias courbina(48.9%)和对虾(33.8%)为主，刺网是最主要的渔具。很少有研究涉及在Araruama泻湖捕鱼，导致目前的规划措施缺乏数据支持。我们主张对现行法规进行参与性审查，以更好地解决刺网捕鱼和捕获不同鱼类的问题。这项研究是由佩斯卡特环境教育项目资助的研究结果，该项目是由IBAMA执行的联邦环境许可要求的缓解措施。
{"title":"FISHING IN THE LARGEST PERENE HYPERSALINE LAGOON IN SOUTH AMERICA, WITH NOTES ON CURRENT REGULATIONS","authors":"Márcio Luís Chagas Macedo, Sérgio Ricardo Santos, Maurício Düppré de Abreu, Hugo Zecchim, Karina A. Keunecke, Geraldo Timoteo, M. Vianna","doi":"10.20950/1678-2305/bip.2021.47.e658","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e658","url":null,"abstract":"Araruama Lagoon (Rio de Janeiro) is the largest hypersaline lagoon in South America. The aim of this study was to survey fishing landings, capture areas and production at this lagoon, in addition to analyzing data from the Pescarte Census. Fishing landings were monitored daily by community agents from March to August/2009, through the Petrobras Mosaico Program. Thirteen landing points were identified in five municipalities, totaling 8,096 recorded landings, and accumulating 469.1 tonnes. São Pedro da Aldeia (39.6%), Arraial do Cabo (27.7%) and areas in the central region (37.6%) and the south coast (29.1%) of the lagoon presented the highest landings and catch volumes. Twelve species were identified, mainly Pogonias courbina (48.9%) and Penaeus spp (33.8%), and gillnets were the most important fishing gear. Very few studies have addressed fishing at Araruama Lagoon, leading to current planning measures supported by little data. We advocate a participatory review of current regulations, to better address gillnet fishing and the capture of different fish species. This study is the result of research financed by the Pescarte Environmental Education Project, a mitigation measure required by the Federal Environmental Licensing, conducted by IBAMA.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"33 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89728042","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.e657
Mariana Soares, P. Gonçalves, D. D. Schleder, Mariana Delgadillo-Díaz, M. Gullian-Klanian, F. N. Vieira
This study aimed to evaluate the use of protein hydrolysate of poultry by-product and swine liver in the diet of Litopenaeus vannamei and its effect on the intestinal microbiota and on the enzymatic activity of the hepatopancreas. Shrimp (10.94 ± 0.90 g) were fed with diets containing 0%, 25%, 50%, 75% and 100% of replacement of salmon by-product meal by protein hydrolysate, in triplicate. The hepatopancreas enzymatic activity and composition of intestinal microbiota was studied. It was observed that the protein hydrolysate in the diet changed the enzymatic activity of the shrimp when compared to the control group (p < 0.05). Amylase activity increases directly with the percent of protein replacement in the diet. Metagenomic analysis revealed change in the gut biome of the shrimps. The increasing levels of protein replacement provided greater richness in the 75% and 100% treatments, were mainly related to changes in the abundances in the families Rhodobacteraceae and Flavobacteriaceae. A reduction in the abundance of the Vibrionaceae family was observed with the inclusion of protein hydrolysate in the diet. These results indicate that the protein hydrolysate demonstrated beneficial changes when added at concentrations of 25% in the diet of L. vannamei.
{"title":"PROTEIN HYDROLYSATE OF POULTRY BY-PRODUCT AND SWINE LIVER IN THE DIET OF PACIFIC WHITE SHRIMP","authors":"Mariana Soares, P. Gonçalves, D. D. Schleder, Mariana Delgadillo-Díaz, M. Gullian-Klanian, F. N. Vieira","doi":"10.20950/1678-2305/bip.2021.47.e657","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e657","url":null,"abstract":"This study aimed to evaluate the use of protein hydrolysate of poultry by-product and swine liver in the diet of Litopenaeus vannamei and its effect on the intestinal microbiota and on the enzymatic activity of the hepatopancreas. Shrimp (10.94 ± 0.90 g) were fed with diets containing 0%, 25%, 50%, 75% and 100% of replacement of salmon by-product meal by protein hydrolysate, in triplicate. The hepatopancreas enzymatic activity and composition of intestinal microbiota was studied. It was observed that the protein hydrolysate in the diet changed the enzymatic activity of the shrimp when compared to the control group (p < 0.05). Amylase activity increases directly with the percent of protein replacement in the diet. Metagenomic analysis revealed change in the gut biome of the shrimps. The increasing levels of protein replacement provided greater richness in the 75% and 100% treatments, were mainly related to changes in the abundances in the families Rhodobacteraceae and Flavobacteriaceae. A reduction in the abundance of the Vibrionaceae family was observed with the inclusion of protein hydrolysate in the diet. These results indicate that the protein hydrolysate demonstrated beneficial changes when added at concentrations of 25% in the diet of L. vannamei.","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":"90193006","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.e632
Fabiana Harumi Miyasaki, S. Arruda, Letícia Carneiro Ferreira, J. S. Azevedo
The artisanal fishing is an important activity in Billings Reservoir (São Paulo, Brazil) and there is a paucity of biometric data about the fish in this region. Thereby, it is important to provide data about ichthyofauna that can be used for future management actions. The aim of this study was to present some data about the water quality and biometric data on fish species collected at the Bororé site (Billings Reservoir). In general, the obtained hydrochemical data raised a concern about the water quality because some parameters were above the established limit for body water class 2. A total of 170 fish were captured, corresponding to seven species and one genus. Geophagus brasiliensis was the most representative species (36%), followed by Astyanax bimaculatus (25%) and A. eigenmanniorum (20%). The hepatosomatic index (HSI) data showed differences in energy displacement between the species; the highest HSI values were observed in Hoplias malabaricus (HSImale = 1.33 ± 0.20; HSIfemale = 1.17 ± 0.82) while the smallest HSI was observed in A. fasciatus (HSImale = 0.47 ± 0.14; HSIfemale = 0.68 ± 0.35).
{"title":"HYDROCHEMICAL PARAMETERS AND BIOMETRIC DATA OF FISH SPECIES FROM THE BORORÉ, BILLINGS RESERVOIR, SÃO PAULO, BRAZIL","authors":"Fabiana Harumi Miyasaki, S. Arruda, Letícia Carneiro Ferreira, J. S. Azevedo","doi":"10.20950/1678-2305/bip.2021.47.e632","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e632","url":null,"abstract":"The artisanal fishing is an important activity in Billings Reservoir (São Paulo, Brazil) and there is a paucity of biometric data about the fish in this region. Thereby, it is important to provide data about ichthyofauna that can be used for future management actions. The aim of this study was to present some data about the water quality and biometric data on fish species collected at the Bororé site (Billings Reservoir). In general, the obtained hydrochemical data raised a concern about the water quality because some parameters were above the established limit for body water class 2. A total of 170 fish were captured, corresponding to seven species and one genus. Geophagus brasiliensis was the most representative species (36%), followed by Astyanax bimaculatus (25%) and A. eigenmanniorum (20%). The hepatosomatic index (HSI) data showed differences in energy displacement between the species; the highest HSI values were observed in Hoplias malabaricus (HSImale = 1.33 ± 0.20; HSIfemale = 1.17 ± 0.82) while the smallest HSI was observed in A. fasciatus (HSImale = 0.47 ± 0.14; HSIfemale = 0.68 ± 0.35).","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"14 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90536127","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.e649
E. Leme, M. DUTRA-CORREA, P. Rodrigues, W. Smith, M. Bernardi, T. B. Kirsten
Previous study of this research group revealed that water from the Billings reservoir (Brazil) intended for human use (water supply and seafood) has microbiological contamination and causes lethality and brain and behavioral impairments in zebrafish. The objective of this study was to understand what have induced these impairments in the animal model. Chemical analyses on water samples from Rio Pequeno (RP), Rio Grande (RG), and Bororé (BO) rivers, as well as chemical and morphological analyses on zebrafish gills exposed to those waters were performed. Waters samples from RP, RG, and BO presented high levels of phosphorus. BO water and fish gills exposed to this water presented high levels of nitrogen. RG water caused potassium contamination in gills. Phosphorus, nitrogen, and potassium are indicators of anthropogenic pollution. RG water and fish gills exposed to this water presented low levels of calcium, which might be an indication of chemical imbalance that could lead to health problems in aquatic animals. RG and BO waters resulted in zirconium contamination in gills. BO water induced respiratory lamellae thickening in the gills, which may be the underlying mechanism for the observed hypoxia. In conclusion, behavioral, brain, and respiratory defects observed previously were induced by chemical and morphologicalb disturbances due to anthropogenic pollution in the Billings reservoir.
{"title":"BILLINGS RESERVOIR (BRAZIL): CHEMICAL STUDIES ON WATER AND CHEMICAL AND MORPHOLOGICAL STUDIES ON ZEBRAFISH GILLS","authors":"E. Leme, M. DUTRA-CORREA, P. Rodrigues, W. Smith, M. Bernardi, T. B. Kirsten","doi":"10.20950/1678-2305/bip.2021.47.e649","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2021.47.e649","url":null,"abstract":"Previous study of this research group revealed that water from the Billings reservoir (Brazil) intended for human use (water supply and seafood) has microbiological contamination and causes lethality and brain and behavioral impairments in zebrafish. The objective of this study was to understand what have induced these impairments in the animal model. Chemical analyses on water samples from Rio Pequeno (RP), Rio Grande (RG), and Bororé (BO) rivers, as well as chemical and morphological analyses on zebrafish gills exposed to those waters were performed. Waters samples from RP, RG, and BO presented high levels of phosphorus. BO water and fish gills exposed to this water presented high levels of nitrogen. RG water caused potassium contamination in gills. Phosphorus, nitrogen, and potassium are indicators of anthropogenic pollution. RG water and fish gills exposed to this water presented low levels of calcium, which might be an indication of chemical imbalance that could lead to health problems in aquatic animals. RG and BO waters resulted in zirconium contamination in gills. BO water induced respiratory lamellae thickening in the gills, which may be the underlying mechanism for the observed hypoxia. In conclusion, behavioral, brain, and respiratory defects observed previously were induced by chemical and morphologicalb disturbances due to anthropogenic pollution in the Billings reservoir.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"14 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85707422","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：