Pub Date : 2022-12-02DOI: 10.20950/1678-2305/bip.2022.48.e688
R. Sousa, Nathalya Sousa Oliveira, Fábio Ricardo da Rosa
The present study evaluated the incidence of fish species in Cujubim Lake in Porto Velho (Rondônia, Brazil) concerning periods of flood and low water. For this, we used experimental fisheries, with ichthyofauna samplings carried out in the years 2019 and 2020, which resulted in 2,508 specimens. For quantifying the ecological data, we analyzed Shannon-Weaver diversity, species richness, Simpson dominance and Pielou evenness. The predominant fish orders were Characiformes and Siluriformes, and the species Anchovia aff. surinamensis was the most abundant (N=809/35.49%). Diversity indicators were similar across all sectors (S1=the lower margin - end, S2=center and S3=mouth of the lake). Only the levels of richness and abundance were lower in the S3 sector, despite the importance of this habitat as a link to the Madeira River, which indicates transient diversity, followed by active selection of the S1 and S2 sectors in the lake by most fish. Limnological data, such as those of temperature (30.30±1.20°C), conductivity (35.82±5.98 µS cm-1), dissolved oxygen (7.38±3.56 mg L-1) and pH (6.70±0.54), were within the acceptable levels for tropical fish. The non-metric multidimensional scaling (NMDS) analysis showed the ordering of parameters by sector and species with greater affinity for each environmental attribute, in which dissolved oxygen (NMDS1=-0.720; r2=0.862 and p=0.043) and electrical conductivity stood out. Thus, it can be concluded that the behavior of the fish diversity of Cujubim Lake is affected both seasonally and longitudinally.
{"title":"The flood pulse regulates the longitudinal distribution of fish assemblages in the amazonian floodplain lakes","authors":"R. Sousa, Nathalya Sousa Oliveira, Fábio Ricardo da Rosa","doi":"10.20950/1678-2305/bip.2022.48.e688","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e688","url":null,"abstract":"The present study evaluated the incidence of fish species in Cujubim Lake in Porto Velho (Rondônia, Brazil) concerning periods of flood and low water. For this, we used experimental fisheries, with ichthyofauna samplings carried out in the years 2019 and 2020, which resulted in 2,508 specimens. For quantifying the ecological data, we analyzed Shannon-Weaver diversity, species richness, Simpson dominance and Pielou evenness. The predominant fish orders were Characiformes and Siluriformes, and the species Anchovia aff. surinamensis was the most abundant (N=809/35.49%). Diversity indicators were similar across all sectors (S1=the lower margin - end, S2=center and S3=mouth of the lake). Only the levels of richness and abundance were lower in the S3 sector, despite the importance of this habitat as a link to the Madeira River, which indicates transient diversity, followed by active selection of the S1 and S2 sectors in the lake by most fish. Limnological data, such as those of temperature (30.30±1.20°C), conductivity (35.82±5.98 µS cm-1), dissolved oxygen (7.38±3.56 mg L-1) and pH (6.70±0.54), were within the acceptable levels for tropical fish. The non-metric multidimensional scaling (NMDS) analysis showed the ordering of parameters by sector and species with greater affinity for each environmental attribute, in which dissolved oxygen (NMDS1=-0.720; r2=0.862 and p=0.043) and electrical conductivity stood out. Thus, it can be concluded that the behavior of the fish diversity of Cujubim Lake is affected both seasonally and longitudinally.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74673585","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 : 2022-11-11DOI: 10.20950/1678-2305/bip.2022.48.e700
J. Cavali, Regiane Pandolfo Marmentini, Jerônimo Vieira Dantas Filho, Rute Bianchini Pontuschka, Sandro de Vargas Schons
This study aimed to determine the fatty acid profile, omegas, and lipid quality indices in commercial cuts of tambaqui (Colossoma macropomum). Samples were collected from two fish processing industries located in Rondônia state, Brazil. The experimental design was completely randomized, with processing performed in triplicate. Data were submitted for analysis of variance (ANOVA) to assess differences between commercial cuts. If ANOVA was statistically significant (α = 0.05), the averages were compared using Tukey's test. In the composition of fatty acids, there was a difference (p < 0.05) between commercial cuts. The commercial cuts with the highest percentages of saturated fatty acids (SFAs) steak at 47.050%, monounsaturated fatty acids (MUFAs) fillet at 45.120%, and polyunsaturated fatty acids (PUFAs) band at 19.050%. In addition, the band expresses the highest values of omegas 3, 6, 7, and n-9. The indices prescribed ∑PUFAs/∑SFAs, ∑PUFAs (n-6/∑n-3), atherogenicity index, thrombogenicity index, and ratio between hypocholesterolemic and hypercholesterolemic fatty acids, indicating that commercial cuts have lipid quality. Nutritional information is important for conservation and processing processes, the development of new products on the market, and guidance on the form of preparation, thus providing commercial security for different market niches.
{"title":"Fatty acid profile, omegas, and lipid quality in commercial cuts of tambaqui (Colossoma macropomum Cuvier, 1818) cultivated in excavated tanks","authors":"J. Cavali, Regiane Pandolfo Marmentini, Jerônimo Vieira Dantas Filho, Rute Bianchini Pontuschka, Sandro de Vargas Schons","doi":"10.20950/1678-2305/bip.2022.48.e700","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e700","url":null,"abstract":"This study aimed to determine the fatty acid profile, omegas, and lipid quality indices in commercial cuts of tambaqui (Colossoma macropomum). Samples were collected from two fish processing industries located in Rondônia state, Brazil. The experimental design was completely randomized, with processing performed in triplicate. Data were submitted for analysis of variance (ANOVA) to assess differences between commercial cuts. If ANOVA was statistically significant (α = 0.05), the averages were compared using Tukey's test. In the composition of fatty acids, there was a difference (p < 0.05) between commercial cuts. The commercial cuts with the highest percentages of saturated fatty acids (SFAs) steak at 47.050%, monounsaturated fatty acids (MUFAs) fillet at 45.120%, and polyunsaturated fatty acids (PUFAs) band at 19.050%. In addition, the band expresses the highest values of omegas 3, 6, 7, and n-9. The indices prescribed ∑PUFAs/∑SFAs, ∑PUFAs (n-6/∑n-3), atherogenicity index, thrombogenicity index, and ratio between hypocholesterolemic and hypercholesterolemic fatty acids, indicating that commercial cuts have lipid quality. Nutritional information is important for conservation and processing processes, the development of new products on the market, and guidance on the form of preparation, thus providing commercial security for different market niches.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"47 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90903647","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 : 2022-11-11DOI: 10.20950/1678-2305/bip.2022.48.e726
I. M. Nascimento, Ana Luiza Caldas Diniz, Yanna Leidy Ketley Fernandes Cruz, A. Azevedo, Rosana Sousa de Oliveira Pinho Azevedo, D. B. Pinheiro-Sousa, Z. Almeida, R. N. F. Carvalho-Neta
Centropomus undecimalis (popularly known as common snook) is a very important resource for commercial and recreational fishing. This study aimed to evaluate quantitative indicators of the reproductive biology of C. undecimalis in the Parnaíba Delta Environmental Protection Area (Brazil). The parameters were analyzed at the different stages of the reproductive cycle of 155 specimens, 135 (87.10%) males and 20 (12.90%) females. The results showed positive allometric growth for females and negative allometric growth for males. The sex ratio was 1:6.75 (females: males). The first estimated maturation (L50) was 57.21 cm for females and 54.55 cm for males. The species spawns multiple times, with oocytes maturing in batches, being released at intervals. According to the results of this study, it was possible to notice that reproductive peaks occurred in February, May, and November. Therefore, it is recommended that the capture of this species be avoided during these months.
{"title":"Quantitative indicators of the reproductive biology of adult specimens of Centropomus undecimalis (Teleost: Centropomidae) obtained from commercial fishermen in the Parnaíba Delta Environmental Protection Area, north coast of Brazil","authors":"I. M. Nascimento, Ana Luiza Caldas Diniz, Yanna Leidy Ketley Fernandes Cruz, A. Azevedo, Rosana Sousa de Oliveira Pinho Azevedo, D. B. Pinheiro-Sousa, Z. Almeida, R. N. F. Carvalho-Neta","doi":"10.20950/1678-2305/bip.2022.48.e726","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e726","url":null,"abstract":"Centropomus undecimalis (popularly known as common snook) is a very important resource for commercial and recreational fishing. This study aimed to evaluate quantitative indicators of the reproductive biology of C. undecimalis in the Parnaíba Delta Environmental Protection Area (Brazil). The parameters were analyzed at the different stages of the reproductive cycle of 155 specimens, 135 (87.10%) males and 20 (12.90%) females. The results showed positive allometric growth for females and negative allometric growth for males. The sex ratio was 1:6.75 (females: males). The first estimated maturation (L50) was 57.21 cm for females and 54.55 cm for males. The species spawns multiple times, with oocytes maturing in batches, being released at intervals. According to the results of this study, it was possible to notice that reproductive peaks occurred in February, May, and November. Therefore, it is recommended that the capture of this species be avoided during these months.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"197 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73943703","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 : 2022-11-11DOI: 10.20950/1678-2305/bip.2022.48.e725
R. Frota, S. U. Gallani, Paulo Santos, C. Pereira, C. Oishi, L. U. Gonçalves, G. Valladão
Research in aquaculture shows that isomers thymol and carvacrol are extremely promising additives in fish diet, being classified as potent immunostimulant, antioxidant, and growth promoters. In this study, the effects of the thymol:carvacrol combination (1:1 ratio) on health parameters and zootechnical performance of tambaqui (Colossoma macropomum) were evaluated. The compounds were incorporated in concentrations of 0, 500, 1000, 1500, and 2000 mg/kg of feed. At intervals of 30 and 60 days, fish were sampled to evaluate haematological, biochemical, and immunological parameters, and after 60 days, zootechnical performance, parasitic load, and resistance to bacteriosis were evaluated. After 30 days, the fish that received the highest concentrations of thymol:carvacrol showed a reduction in the number of thrombocytes, a decrease in the number of lymphocytes, and an increase in eosinophils (p â"°¤ 0.05). After 60 days of feeding, haematological parameters were similar between all groups. Regarding the antiparasitic effect of the compounds, all groups that received supplemented diets had a high parasitic load (monogenean infestation) that did not differ from the control group. Regarding the prevention of bacteriosis, high mortality was detected in all groups after experimental challenge with Aeromonas jandaei, with no greater protection for fish fed with thymol:carvacrol. In conclusion, it was observed that the haematological results are different from those described in the literature of aquatic animals and corroborate with research of mammals. Therefore, the anti-inflammatory/immunosuppressive action of thymol and carvacrol are highlighted, which is relevant from a pharmaceutical and medicinal point of view. However, the use of these additives for aquaculture deserves to be discussed carefully, as the cost-benefit of this supplementation for the fish farmer is not a consensus.
{"title":"Effects of thymol:carvacrol association on health and zootechnical performance of tambaqui Colossoma macropomum","authors":"R. Frota, S. U. Gallani, Paulo Santos, C. Pereira, C. Oishi, L. U. Gonçalves, G. Valladão","doi":"10.20950/1678-2305/bip.2022.48.e725","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e725","url":null,"abstract":"Research in aquaculture shows that isomers thymol and carvacrol are extremely promising additives in fish diet, being classified as potent immunostimulant, antioxidant, and growth promoters. In this study, the effects of the thymol:carvacrol combination (1:1 ratio) on health parameters and zootechnical performance of tambaqui (Colossoma macropomum) were evaluated. The compounds were incorporated in concentrations of 0, 500, 1000, 1500, and 2000 mg/kg of feed. At intervals of 30 and 60 days, fish were sampled to evaluate haematological, biochemical, and immunological parameters, and after 60 days, zootechnical performance, parasitic load, and resistance to bacteriosis were evaluated. After 30 days, the fish that received the highest concentrations of thymol:carvacrol showed a reduction in the number of thrombocytes, a decrease in the number of lymphocytes, and an increase in eosinophils (p â\"°¤ 0.05). After 60 days of feeding, haematological parameters were similar between all groups. Regarding the antiparasitic effect of the compounds, all groups that received supplemented diets had a high parasitic load (monogenean infestation) that did not differ from the control group. Regarding the prevention of bacteriosis, high mortality was detected in all groups after experimental challenge with Aeromonas jandaei, with no greater protection for fish fed with thymol:carvacrol. In conclusion, it was observed that the haematological results are different from those described in the literature of aquatic animals and corroborate with research of mammals. Therefore, the anti-inflammatory/immunosuppressive action of thymol and carvacrol are highlighted, which is relevant from a pharmaceutical and medicinal point of view. However, the use of these additives for aquaculture deserves to be discussed carefully, as the cost-benefit of this supplementation for the fish farmer is not a consensus.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"34 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78153315","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 : 2022-09-29DOI: 10.20950/1678-2305/bip.2022.48.e659
Gesyane Bentos França, M. Siqueira, J. C. Melo, Danusia Tavares de Albuquerque, F. P. Venturini, Cláucia Aparecida Honorato
The objective of this study was to evaluate the effects of hydroalcoholic jabuticaba bark on the diets of female blue Betta splendens in relation to the level of digestive enzymes, liver metabolism, and antioxidant activity. The sample constituted 150 individuals subdivided into five groups in triplicate, totaling 10 fish per 20 L experimental unit. Commercial diets (40.88% CP and 4374.8 Kcal kg-1) were added to jabuticaba bark (EJB) hydroalcoholic extract concentrations of 0.5, 1.0, 1.5, and 2.0 g .kg-1. The rations were provided twice a day, until apparent satiety, for 21 days. Fish mortality was not observed during the trial. Growth indices did not show any significant differences, apart from feed conversion. The use of the extract promoted an increase in the luminosity of the fish; however, there was no statistical difference in chromaticity a * and b *. A decrease in the activity of Superoxide dismutase (SOD) on the skin of fish fed diets of 1.5 and 2.0g.kg-1 EJB was observed in comparison to the other diets. There was no change in CAT activity. It is concluded that the use of 2 g kg-1 EJB has an antioxidant effect that reflects the greater luminosity of blue female Betta splendens.
本研究的目的是评估水酒精巴布提卡巴树皮对雌性蓝色斗鱼饲料中消化酶水平、肝脏代谢和抗氧化活性的影响。样本共150只，分为5组，每组3份，每20 L实验单位共10只鱼。在浓度分别为0.5、1.0、1.5和2.0 g .kg-1的竹叶树皮(EJB)水醇提取物中添加商业饲粮(CP为40.88%，cal为4374.8 Kcal kg-1)。每天提供两次口粮，直到明显饱腹，持续21天。试验期间未观察到鱼类死亡。除饲料系数外，各生长指标无显著差异。提取物的使用促进了鱼的亮度增加;色度a *和b *无统计学差异。饲料添加量为1.5和2.0g时，鱼皮超氧化物歧化酶(SOD)活性降低。与其他日粮相比，观察到kg-1 EJB。CAT活性没有变化。由此可见，使用2 g kg-1 EJB具有抗氧化作用，反映了蓝色雌性锦绣斗鱼更大的亮度。
{"title":"HYDROALCOHOLIC EXTRACT OF JABUTICABA BARK IN FEMALE BETTA FISH DIET","authors":"Gesyane Bentos França, M. Siqueira, J. C. Melo, Danusia Tavares de Albuquerque, F. P. Venturini, Cláucia Aparecida Honorato","doi":"10.20950/1678-2305/bip.2022.48.e659","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e659","url":null,"abstract":"The objective of this study was to evaluate the effects of hydroalcoholic jabuticaba bark on the diets of female blue Betta splendens in relation to the level of digestive enzymes, liver metabolism, and antioxidant activity. The sample constituted 150 individuals subdivided into five groups in triplicate, totaling 10 fish per 20 L experimental unit. Commercial diets (40.88% CP and 4374.8 Kcal kg-1) were added to jabuticaba bark (EJB) hydroalcoholic extract concentrations of 0.5, 1.0, 1.5, and 2.0 g .kg-1. The rations were provided twice a day, until apparent satiety, for 21 days. Fish mortality was not observed during the trial. Growth indices did not show any significant differences, apart from feed conversion. The use of the extract promoted an increase in the luminosity of the fish; however, there was no statistical difference in chromaticity a * and b *. A decrease in the activity of Superoxide dismutase (SOD) on the skin of fish fed diets of 1.5 and 2.0g.kg-1 EJB was observed in comparison to the other diets. There was no change in CAT activity. It is concluded that the use of 2 g kg-1 EJB has an antioxidant effect that reflects the greater luminosity of blue female Betta splendens.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"139 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74711910","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 : 2022-08-09DOI: 10.20950/1678-2305/bip.2022.48.e703
S. Lima, H. Andrade, R. Sousa
In this study, the effects of precipitation on Anomalocardia flexuosa densities were analyzed from the perspective of temporal delays between the variables. The collections occurred bi-monthly between April 2016 and February 2018 at Mangue Seco beach, Pernambuco, Brazil. Total densities and densities according to the category of size (small, medium and large), and precipitation were analyzed with autocorrelation and cross-correlation functions, with a retrospective analysis of up to 12 months. Distributed lag models were used among the variables. The maximum density was found in June 2017 (378 ind.m2) for the medium-size category of individuals. Significant autocorrelations occurred for densities (total and average size) and precipitation. In cross-correlation functions, high precipitation for a given month was followed by high densities of total and average individuals for up to two months. Distributed lag models also showed significant values between densities (total and medium-sized) and precipitation, which explained more than 50% of the variability of these two groups. The effect of precipitation was responsible for the increase in the density of A. flexuosa for up to two months, mainly by increasing individuals with medium shell lengths.
{"title":"Rainfall effects on Anomalocardia flexuosa densities on the northeastern Brazilian coast using distributed lag models","authors":"S. Lima, H. Andrade, R. Sousa","doi":"10.20950/1678-2305/bip.2022.48.e703","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e703","url":null,"abstract":"In this study, the effects of precipitation on Anomalocardia flexuosa densities were analyzed from the perspective of temporal delays between the variables. The collections occurred bi-monthly between April 2016 and February 2018 at Mangue Seco beach, Pernambuco, Brazil. Total densities and densities according to the category of size (small, medium and large), and precipitation were analyzed with autocorrelation and cross-correlation functions, with a retrospective analysis of up to 12 months. Distributed lag models were used among the variables. The maximum density was found in June 2017 (378 ind.m2) for the medium-size category of individuals. Significant autocorrelations occurred for densities (total and average size) and precipitation. In cross-correlation functions, high precipitation for a given month was followed by high densities of total and average individuals for up to two months. Distributed lag models also showed significant values between densities (total and medium-sized) and precipitation, which explained more than 50% of the variability of these two groups. The effect of precipitation was responsible for the increase in the density of A. flexuosa for up to two months, mainly by increasing individuals with medium shell lengths.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88606689","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 : 2022-08-08DOI: 10.20950/1678-2305/bip.2022.48.e705
H. R. D. Silva, Tiago Viana da Costa, João Pedro Cidade, Wendell Glória dos Santos, N. J. B. Machado, R. B. Vieira
Apistogramma agassizii is a native fish from the Amazon basin, which is of great interest for fishkeeping and is supplied to the retail trade from extractivism. Knowledge about the reproductive characteristics of this fish is fundamental to successful breeding. Objective: This work aimed to study the behavior and reproductive performance of this species in white and black aquariums. A total of 16 pairs were used, 8 in each treatment. The system had water recirculation, with fresh and inert food supply. Result: The fish demonstrated parental care, more accentuated by the female and partial spawning. The same coloration pattern was observed in both treatments, with coloration intensifying only during spawning. The eggs were adhesive and U-shaped/oval. The females followed the larvae, even after they left the nests, and attacked the males when they approached the offspring. Males exhibited territorial behavior. No significant differences were observed for the following parameters studied: largest and smallest egg size, spawning weight, absolute fecundity, number of hatched larvae, and hatchability rate. Conclusion: This study found that the fish are prolific and show good reproductive rates in conditions of captivity; thus, they are suitable to rear for the ornamental fish trade.
{"title":"Reproductive aspects of the dwarf cichlid Apistogramma agassizii under captive conditions","authors":"H. R. D. Silva, Tiago Viana da Costa, João Pedro Cidade, Wendell Glória dos Santos, N. J. B. Machado, R. B. Vieira","doi":"10.20950/1678-2305/bip.2022.48.e705","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e705","url":null,"abstract":"Apistogramma agassizii is a native fish from the Amazon basin, which is of great interest for fishkeeping and is supplied to the retail trade from extractivism. Knowledge about the reproductive characteristics of this fish is fundamental to successful breeding. Objective: This work aimed to study the behavior and reproductive performance of this species in white and black aquariums. A total of 16 pairs were used, 8 in each treatment. The system had water recirculation, with fresh and inert food supply. Result: The fish demonstrated parental care, more accentuated by the female and partial spawning. The same coloration pattern was observed in both treatments, with coloration intensifying only during spawning. The eggs were adhesive and U-shaped/oval. The females followed the larvae, even after they left the nests, and attacked the males when they approached the offspring. Males exhibited territorial behavior. No significant differences were observed for the following parameters studied: largest and smallest egg size, spawning weight, absolute fecundity, number of hatched larvae, and hatchability rate. Conclusion: This study found that the fish are prolific and show good reproductive rates in conditions of captivity; thus, they are suitable to rear for the ornamental fish trade.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"49 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84448839","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 : 2022-08-08DOI: 10.20950/1678-2305/bip.2022.48.e692
Marcos Souza de Almeida, R. Gimenes, P. Furtado, L. Poersch, Wilson Wasielesky, G. Fóes, J. R. Carrijo-Mauad
In recent decades, new aquaculture technologies have been developed and improved, such as the Biofloc Technology system, which is considered an alternative to the conventional aquaculture model. This study compared the bioeconomic viability of intensive production in nurseries and super-intensive production of shrimp Litopenaeus vannamei bioflocs greenhouses. The investment for implementing the project was US$ 767,190.18 for intensive production and US$ 807,669.16 for super-intensive production. The analyses showed Net Present Value of US$ 363,718.21 and US$ 385,477.42, Equivalent annual value of US$ 59,830.66 and US$ 63,410.00, Net future value of US$ 965,052.69 and US$ 1,022,786.35, Payback Period 4.12 and 4.11, Discounted payback period 5.64 and 5.63, Profitability Index 1.47 and 1.48, Internal Rate of Return 20.49 and 20.55%, and Modified Internal Rate of Return 14.61 and 14.64%. The investment analysis used in this study showed that super-intensive production in a greenhouse is the best investment option. The development of a new scenario simulating the super-intensive production of shrimp in a Biofloc Technology system, considering land use as a premise, made it possible to observe the possibility of obtaining financial gains in scale, both in the reduction of production costs and in the economic performance of the enterprise. However, the financial contribution for the implementation and operation of the project increased substantially.
{"title":"Economic analysis of intensive and super-intensive Litopenaeus vannamei shrimp production in a Biofloc Technology system","authors":"Marcos Souza de Almeida, R. Gimenes, P. Furtado, L. Poersch, Wilson Wasielesky, G. Fóes, J. R. Carrijo-Mauad","doi":"10.20950/1678-2305/bip.2022.48.e692","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e692","url":null,"abstract":"In recent decades, new aquaculture technologies have been developed and improved, such as the Biofloc Technology system, which is considered an alternative to the conventional aquaculture model. This study compared the bioeconomic viability of intensive production in nurseries and super-intensive production of shrimp Litopenaeus vannamei bioflocs greenhouses. The investment for implementing the project was US$ 767,190.18 for intensive production and US$ 807,669.16 for super-intensive production. The analyses showed Net Present Value of US$ 363,718.21 and US$ 385,477.42, Equivalent annual value of US$ 59,830.66 and US$ 63,410.00, Net future value of US$ 965,052.69 and US$ 1,022,786.35, Payback Period 4.12 and 4.11, Discounted payback period 5.64 and 5.63, Profitability Index 1.47 and 1.48, Internal Rate of Return 20.49 and 20.55%, and Modified Internal Rate of Return 14.61 and 14.64%. The investment analysis used in this study showed that super-intensive production in a greenhouse is the best investment option. The development of a new scenario simulating the super-intensive production of shrimp in a Biofloc Technology system, considering land use as a premise, made it possible to observe the possibility of obtaining financial gains in scale, both in the reduction of production costs and in the economic performance of the enterprise. However, the financial contribution for the implementation and operation of the project increased substantially.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"13 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88631756","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 : 2022-08-08DOI: 10.20950/1678-2305/bip.2022.48.e641
Thais Aparecida Soinski, Camilla de Souza Gato, Anderson Arimura Matsumoto, Midiã Lima Brazão, W. Smith
The urbanization process deeply affects rivers and streams, with numerous impacts, such as the discharge of sewers, dams, and pipework, causing profound changes in the water bodies characteristics and in their biota. In this scenario, the silting of rivers suffers one of the most impactful changes, as it undergoes a reduction in the depth and width of the rivers, triggering physical and chemical changes in the water, as well as in the structure of fish population, its feeding and reproduction habitats. As a palliative measure, it is normal to carry out the desilting (dredging) of rivers, an activity that is also very impacting. Floodings are one of the main factors that demand dredging to be carried out. This review was made to analyze desilting activities, their effects on biota and migratory fish, as well as to evaluate the best management strategies and mitigation of impacts on fish population. The shifting and removal of sediment from the riverbed can cause burial and massive death of eggs and larvae, in addition to interfering in the upward and downward migration of eggs, larvae, and adults of migratory fish. In addition, breeding and feeding sites can be impacted by sediment movement, dredging, and deposition. Some actions minimize the impacts of the silting activity recovering riparian forests, inspect the use of soil on the banks, move urban settlements away, assess the dredging site, consider the spawning sites and reduce the suspension of bottom sediments, as well as choose the best equipment and time for the performance of activities. Therefore, the development of research on the effect of dredging of water bodies on fish would contribute to a better management of the activity.
{"title":"Dredging on water bodies and margin interventions: effects on fish","authors":"Thais Aparecida Soinski, Camilla de Souza Gato, Anderson Arimura Matsumoto, Midiã Lima Brazão, W. Smith","doi":"10.20950/1678-2305/bip.2022.48.e641","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e641","url":null,"abstract":"The urbanization process deeply affects rivers and streams, with numerous impacts, such as the discharge of sewers, dams, and pipework, causing profound changes in the water bodies characteristics and in their biota. In this scenario, the silting of rivers suffers one of the most impactful changes, as it undergoes a reduction in the depth and width of the rivers, triggering physical and chemical changes in the water, as well as in the structure of fish population, its feeding and reproduction habitats. As a palliative measure, it is normal to carry out the desilting (dredging) of rivers, an activity that is also very impacting. Floodings are one of the main factors that demand dredging to be carried out. This review was made to analyze desilting activities, their effects on biota and migratory fish, as well as to evaluate the best management strategies and mitigation of impacts on fish population. The shifting and removal of sediment from the riverbed can cause burial and massive death of eggs and larvae, in addition to interfering in the upward and downward migration of eggs, larvae, and adults of migratory fish. In addition, breeding and feeding sites can be impacted by sediment movement, dredging, and deposition. Some actions minimize the impacts of the silting activity recovering riparian forests, inspect the use of soil on the banks, move urban settlements away, assess the dredging site, consider the spawning sites and reduce the suspension of bottom sediments, as well as choose the best equipment and time for the performance of activities. Therefore, the development of research on the effect of dredging of water bodies on fish would contribute to a better management of the activity.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"18 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85383530","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 : 2022-08-08DOI: 10.20950/1678-2305/bip.2022.48.e695
Felipe Misael da Silva Morsoleto, K. C. D. S. Lira, J. F. M. Silva, Humberto Rodrigues Francisco, Fabio Bittencourt, A. Feiden
The hydrographic basin of Arroio Marreco (Paraná State) concentrates a productive chain of fish farming and great intensification of tilapia farming. In this study, we aimed to monitor the quality of effluent water and organic and inorganic elements released by fish farming in ponds, using geomorphological and land-use and occupation data. The Terrain Analysis Using Digital Elevation Models, Digital Elevation Model software was used to delimit watersheds in the software Quantum geographic information system version 3.6.3. A total of 1,457 production units (water slides) were identified across the study area. This represented an occupied area of 160.2 ha. Analyzing the sub-basins, it was found that High Marreco is the sub-basin with the most developed logistical chain. Low Marreco does not yet have an integration of its fish farming with the region’s logistics chain. Medium Marreco does not have fish farming as its main activity, only using it to reuse inputs from other agricultural activities. There is a large input of nutrients from aquaculture in all the sub-basins. To reduce them, it is recommended to implement decantation and/or reuse of wastewater systems. The results of this study show how important it is to know the dynamics of nutrients in the fish farms and the physical characteristics of the drainage basin to determine the support capacity of the environment, so as not to allow licenses that promote impacts above the self-cleaning capacity of the courses water.
{"title":"Geographic information system as a tool for assessing ponds and the potential for environmental impact caused by fish farming","authors":"Felipe Misael da Silva Morsoleto, K. C. D. S. Lira, J. F. M. Silva, Humberto Rodrigues Francisco, Fabio Bittencourt, A. Feiden","doi":"10.20950/1678-2305/bip.2022.48.e695","DOIUrl":"https://doi.org/10.20950/1678-2305/bip.2022.48.e695","url":null,"abstract":"The hydrographic basin of Arroio Marreco (Paraná State) concentrates a productive chain of fish farming and great intensification of tilapia farming. In this study, we aimed to monitor the quality of effluent water and organic and inorganic elements released by fish farming in ponds, using geomorphological and land-use and occupation data. The Terrain Analysis Using Digital Elevation Models, Digital Elevation Model software was used to delimit watersheds in the software Quantum geographic information system version 3.6.3. A total of 1,457 production units (water slides) were identified across the study area. This represented an occupied area of 160.2 ha. Analyzing the sub-basins, it was found that High Marreco is the sub-basin with the most developed logistical chain. Low Marreco does not yet have an integration of its fish farming with the region’s logistics chain. Medium Marreco does not have fish farming as its main activity, only using it to reuse inputs from other agricultural activities. There is a large input of nutrients from aquaculture in all the sub-basins. To reduce them, it is recommended to implement decantation and/or reuse of wastewater systems. The results of this study show how important it is to know the dynamics of nutrients in the fish farms and the physical characteristics of the drainage basin to determine the support capacity of the environment, so as not to allow licenses that promote impacts above the self-cleaning capacity of the courses water.","PeriodicalId":9062,"journal":{"name":"Boletim do Instituto de Pesca","volume":"291 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76311107","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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