Cananéia, Brazil
Cananéia, Brazil

Time filter

Source Type

Santos D.B.,University of Aveiro | Barbieri E.,Institute Pesca APTA SAA SP | Bondioli A.C.V.,Pos doutoranda Do Institute Pesca APTA SAA SP | De Melo C.B.,Programa Of Mestrado Do Institute Pesca Apta Saa Sp
Mundo da Saude | Year: 2014

Penaeid shrimps are important resources for worldwide fisheries and aquaculture. In Brazil, Litopenaeus schmitti is an important commercially exploited species, and the ideal animal for studying the impairment caused by the effects of heavy metals often detected in coastal areas. The main purpose of the present study was to detect the acute toxicity of lead (Pb) in L. schmitti and to investigate its effect on oxygen consumption and ammonia excretion for different salinities. This has not been studied in this species before. Lead was significantly more toxic at salinity 8 than at 20 and 33. The oxygen consumption and ammonia excretion were estimated through experiments performed on each of the fifteen possible combinations of three salinities (33, 20 and 8), at the temperature of 21 C. Cadmium showed a significant improvement in oxygen consumption at salinity 8, and results show that the oxygen consumption increases with respect to the lead concentration. At the highest lead concentration employed (2.12 10-2 mg/L), the salinity 8 and the temperature at 21 C, oxygen consumption increases 131% in relation to the control. In addition, after separate exposure to lead, elevation in ammonia excretion was obtained, which was 88.2% higher than the control. The results show that lead is more toxic to L. schmitti at lower salinities.


Duarte L.F.d.A.,Institute Pesca | Severino-Rodrigues E.,Institute Pesca APTA SAA SP | Gasalla M.A.,Instituto Oceanografico
Fisheries Research | Year: 2010

In southeastern Brazil, slipper lobsters (Scyllarides deceptor and S. brasiliensis) are caught by fleets trawling for pink shrimp (Farfantepenaeus brasiliensis and F. paulensis) and pots-and-traps fishing for octopuses (Octopus vulgaris). Eight hundred fifty-six landings of shrimp trawlers and 28 of the octopus fleet were monitored in the Santos region from May 2006 to April 2007. Additional analysis was performed using a database covering the period from 1999 onwards. This study seeks to identify the recent patterns of exploitation of these lobsters with the goal of improving the way towards fishery sustainability. Scyllarides deceptor was the dominant lobster species with 1032 specimens collected, while only three specimens of S. brasiliensis were identified. The area known as the 'Farol do Boi' (23°01′S, 45°00′W to 25°00′S, 45°40′W at 60-135 m deep) showed the highest Catch Per Unit Effort (CPUE). A General Linearized Model (GLM) was used to investigate the factors influencing variations in CPUE in trawl fleets and led to the conclusion that year, month and depth were the most important factors. We detected a significant decrease in the relative abundance of lobsters in the fishing zone despite relatively low fishing effort. Recommendations to protect the lobster resources include taking special precautions in the natural refuge area of the 'Farol do Boi', as an exclusion zone for trawl fleets, and controlling the use of traps longlines to catch octopuses. Concerns about depensatory processes due to the over-exploitation of lobster populations around the world are raised. © 2009 Elsevier B.V. All rights reserved.


Ruiz-Hidalgo K.,University of Costa Rica | Masis-Mora M.,University of Costa Rica | Barbieri E.,Institute Pesca APTA SAA SP | Carazo-Rojas E.,University of Costa Rica | Rodriguez-Rodriguez C.E.,University of Costa Rica
Chemosphere | Year: 2016

Biomixtures are used for the removal of pesticides from agricultural wastewater. As biomixtures employ high content of lignocellulosic substrates, their bioaugmentation with ligninolytic fungi represents a novel approach for their enhancement. Nonetheless, the decrease in the concentration of the pesticide may result in sublethal concentrations that still affect ecosystems. Two matrices, a microcosm of rice husk (lignocellulosic substrate) bioaugmented with the fungus Trametes versicolor and a biomixture that contained fungally colonized rice husk were used in the degradation of the insecticide/nematicide carbofuran (CFN). Elutriates simulating lixiviates from these matrices were used to assay the ecotoxicological effects at sublethal level over Daphnia magna (Straus) and the fish Oreochromis aureus (Steindachner) and Oncorhynchus mykiss (Walbaum). Elutriates obtained after 30 d of treatment in the rice husk microcosms at dilutions over 2.5% increased the offspring of D. magna as a trade-off stress response, and produced mortality of neonates at dilutions over 5%. Elutriates (dilution 1:200) obtained during a 30 d period did not produce alterations on the oxygen consumption and ammonium excretion of O. mykiss, however these physiological parameters were affected in O. aureus at every time point of treatment, irrespective of the decrease in CFN concentration. When the fungally colonized rice husk was used to prepare a biomixture, where more accelerated degradation is expected, similar alterations on the responses by O. aureus were achieved. Results suggest that despite the good removal of the pesticide, it is necessary to optimize biomixtures to minimize their residual toxicity and potential chronic effects on aquatic life. © 2015 Elsevier Ltd.


PubMed | Institute Pesca APTA SAA SP and University of Costa Rica
Type: | Journal: Chemosphere | Year: 2015

Biomixtures are used for the removal of pesticides from agricultural wastewater. As biomixtures employ high content of lignocellulosic substrates, their bioaugmentation with ligninolytic fungi represents a novel approach for their enhancement. Nonetheless, the decrease in the concentration of the pesticide may result in sublethal concentrations that still affect ecosystems. Two matrices, a microcosm of rice husk (lignocellulosic substrate) bioaugmented with the fungus Trametes versicolor and a biomixture that contained fungally colonized rice husk were used in the degradation of the insecticide/nematicide carbofuran (CFN). Elutriates simulating lixiviates from these matrices were used to assay the ecotoxicological effects at sublethal level over Daphnia magna (Straus) and the fish Oreochromis aureus (Steindachner) and Oncorhynchus mykiss (Walbaum). Elutriates obtained after 30 d of treatment in the rice husk microcosms at dilutions over 2.5% increased the offspring of D. magna as a trade-off stress response, and produced mortality of neonates at dilutions over 5%. Elutriates (dilution 1:200) obtained during a 30 d period did not produce alterations on the oxygen consumption and ammonium excretion of O. mykiss, however these physiological parameters were affected in O. aureus at every time point of treatment, irrespective of the decrease in CFN concentration. When the fungally colonized rice husk was used to prepare a biomixture, where more accelerated degradation is expected, similar alterations on the responses by O. aureus were achieved. Results suggest that despite the good removal of the pesticide, it is necessary to optimize biomixtures to minimize their residual toxicity and potential chronic effects on aquatic life.


Barbieri E.,Institute Pesca APTA SAA SP | Doi S.A.,Programa Of Pos Graduacao Do Institute Pesca Apta Saa Sp
Marine and Freshwater Behaviour and Physiology | Year: 2011

The purpose of this study was to measure the acute toxicity of zinc (Zn) on Farfantepenaeus paulensis at different salinities and temperatures by monitoring oxygen consumption. This aspect of the effect of zinc has not been studied in this important commercial species before. First, we examined the acute toxicity of zinc in F. paulensis at 24, 48, 72, and 96 h medium lethal concentration (LC 50). One hundred and fifty shrimp were employed for the routine metabolism measurement utilizing sealed respirometers. Ten shrimp were subjected to oxygen consumption measurements in one of the four concentrations of zinc (control, 0.5, 1.0, 2.0, and 3.0 mg L -1) at three salinities (36, 20, and 5) and three temperatures (25°C, 20°C, and 15°C). Zinc was significantly more toxic at a salinity of 5 than at 20 or 36. The oxygen consumption was estimated through experiments performed on each of the 12 possible combinations of three temperatures (25°C, 20°C, and 15°C) and three salinities (36, 20, and 5). The shrimp showed a significant reduction in oxygen consumption at a salinity of 5. The results show that the oxygen consumption decreases with respect to the zinc concentration in all temperatures studied. At the highest zinc concentration employed (3.0 mg L -1), the salinity 5 and the temperature at 25°C, oxygen consumption decreases 60.92% in relation to the control. The results show that zinc is more toxic to F. paulensis at lower salinities. The significance of the findings for the biology of the species close to sources of zinc is discussed. © 2011 Copyright Taylor and Francis Group, LLC.


Barbieri E.,Institute Pesca APTA SAA SP | Bondioli A.C.V.,Institute Pesca APTA SAA SP
Aquaculture Research | Year: 2015

Piaractus mesopotamicus juveniles (total length 12 ± 0.5 mm) were exposed to different concentrations of ammonia-N (un-ionized plus ionized ammonia as nitrogen), using the static renewal method at different temperature levels (15, 20 and 25°C) at pH 7. The 24, 48, 72, 96 h LC50 values of ammonia-N in P. mesopotamicus juveniles were 5.32, 4.19, 3.79 and 2.85 mg L-1 at 15°C; 4.81, 3.97, 3.25 and 2.50 mg L-1 at 20°C; and 4.16, 3.79, 2.58 and 1.97 mg L-1 at 25°C respectively. The 24, 48, 72, 96 h LC50 values of NH3-N (un-ionized ammonia as nitrogen) were 0.018, 0.014, 0.013, 0.009 mg L-1 at 15°C temperature; 0.023, 0.019, 0.016 and 0.012 mg L-1 at 20°C; 0.029, 0.026, 0.018 and 0.014 mg L-1 at 25°C. The temperature increase from 15 to 25°C caused an increase of ammonia-N susceptibility by 21.80%, 9.55%, 31.92% and 30.87%, after 24, 48, 72 and 96 h exposure respectively. Furthermore, we found that exposure of fish to ammonia-N caused an elevation in total haemoglobin and blood glucose with an increase of 2 mg L-1 concentration. Ammonia levels tolerated, especially in different temperatures levels, have important implications for the management of aquaculture. © 2013 John Wiley & Sons Ltd.


Barbieri E.,Institute Pesca APTA SAA SP | Paes E.T.,Federal Rural University of Amazonia
Chemosphere | Year: 2011

The main purpose of the present study was to detect the acute toxicity of cadmium (Cd) in F. paulensis and to investigate its effect on oxygen consumption and ammonium excretion different salinities. First, we examined the acute toxicity of Cd in F. paulensis at 24, 48, 72, and 96-h lethal concentration (LC50). Cd was significantly more toxic at 5 salinity than at 20 and 36. The oxygen consumption and ammonium excretion were estimated through experiments performed on each of the twelve possible combinations of three salinities (36, 20 and 5), at temperature 20°C. Cd showed a reduction in oxygen consumption at 5 salinity, the results show that the oxygen consumption decreases with respect to the Cd concentration. At the highest Cd concentration employed (2mgL-1), the salinity 5 and the temperature at 20°C, oxygen consumption decreases 53.7% in relation to the control. In addition, after separate exposure to Cd, elevation in ammonium excretion was obtained, wish were 72%, 65% and 95% higher than the control, respectively. The results show that Cd is more toxic to F. paulensis at lower salinities. © 2011 Elsevier Ltd.


Mendonca J.T.,Institute Pesca APTA SAA SP | da Graca-Lopes R.,Institute Pesca APTA SAA SP | de Azevedo V.G.,Claro
Boletim do Instituto de Pesca | Year: 2013

Seabob shrimp (Xiphopenaeus kroyeri) fishery is operated all over the coast off São Paulo State. For that reason the management and supervision of those catches is necessary in order to assure the maintenance of the stocks and the stability of that activity. This paper aims to contribute to the management of the resource through the analysis of the landing dynamics of the species caught off the coast of São Paulo State from 2000 to 2011. The activity is operated by a fleet considered industrial, that comprises 15% of the productivity units and contributes with 47% of the landing production, and by an artisanal fleet that corresponds to 85% of all the productivity units and 53% of the landed shrimp. The CPUE (Catch per Unit Effort) analysis shows stability through the abundance indicator in the last years. The decrease on the number of units from the industrial fleet, probably due to the fisheries low profitability, was the most probable cause for the CPUE stability, or the fishing effort has not exceeded the sustainability limit of the seabob shrimp stock off São Paulo State. The observed stability in the abundance indicator is a very promising factor, and it can modify the vision of the status of the resource in different sectors of the fisheries management. It can also influence management measures that must be established with the participation of the artisanal sector, due to the contribution that the artisanal fleet presents in numbers of productivity units and in the percentage of the total of shrimp landing. That participation, although necessary, has not occurred yet.


This study aimed to contextualize the world's lobster fishing and identify the characteristics of their trades in Santos region (SP). For this purpose, were realized surveys about the captures of 56 years referring the families traded in the world through the informations supplied by the FAO (Food and Agriculture Organization). To State of São Paulo, consults were made in the data base Propesq (Fishing Institute) about the fishing and prices. Besides interviews in fishmonger, businessmen of fishing and restaurant, we observed the trade and the economical potential compared the lobsters Scyllarides spp. and Panulirus spp. The worldwide the family Nephropidae is the one that has been presenting bigger growth in the captures from 1950 and the one that has the biggest observed captures, the Palinuridae showed a little growth of the captures up to the 80' years, and leaving from there it is oscillating without many expressive changes; Scyllarides began to stand out as fisheries only 70' in Asia, precisely where the other two Families had low catches proportional. In the State of São Paulo, two types of lobsters are sold in Baixada Santista, with conspicuous differences in prices between them. There is also a difference in the flow of trade in relation to active fishing gear. Traders notice a decrease in both abundance and size of individuals of both genders and a clear preference to sell the slippers lobsters (Scyllarides spp.) both for the quality of meat as the lowest price.


The common-octopus Octopus vulgaris Cuvier, 1797 has high commercial value, and it is the most important octopus species on landings all over the world. Age estimation is vital for the comprehension of species life cycle and population dynamics, and further elaboration of an adequate management planning of its explotation. In this study, 120 beaks of O. vulgaris had its growth increments counted and, assuming a daily basis periodicity, growth curves were adjusted, taking into account the relation between estimated age (a) and dorsal mantle length (DML), total weight (Wt) and upper beak crest length (CrL). The octopuses analyzed ranged from 50 to 163 mm of DML (162 and 290 marks, respectively) and 55 to 1,498 g of Wt (164 and 356 marks, respectively, consider a one year life expectancy). The best fit for all the analyzed situations was found using power equations: DML = 0.876a0.871, WT = 0.001a2.424, CrL = 0.210a0.790, considering individual with number of marks from 118 to 356. Counting increments on the upper beak of octopus appears to be a relatively simple and useful way of estimating its age.

Loading Institute Pesca APTA SAA SP collaborators
Loading Institute Pesca APTA SAA SP collaborators