Pub Date : 2021-06-15DOI: 10.1590/2675-2824069.20-016pdtdcc
P. T. Chaves, P. O. Birnfeld, A. M. Vaz-dos-Santos
Scomberomorus brasiliensis is the most important fish species of the small-scale fishery off the southwestern Atlantic north of the La Plata estuary. For management purposes, this study evaluated their reproductive biology, size, age and growth along the Parana coast. Monthly samples (March 2018-June 2020) from the fishery comprised 933 specimens (413 males, 520 females), 210-779 mm fork length, corresponding to a size smaller than in the northern areas. It presented negative allometry (b = 2.69159, length-weight relationship). Specimens in all stages of maturity occurred during the study period, indicating spawning in the area from October to June, peaking from January to March. The gonad-length relationship was suitable to confirm this assessment. Individual fecundity varied between 34,484 and 390,786 oocytes. Maturity occurred at L50 = 446.46 mm, t50 = 1.4 years, and L100 = 588.79 mm, and t100 = 2.3 years. The growth parameters were L∞ = 771.68 mm, k = 0.65 year-1 and t0 = -0.102 years, with cohorts aged from 0.5 to 6.5 years. Scomberomorus brasiliensis along the Parana coast constitutes a self-sustaining group, not directly related to that from northeastern Brazil. This small-scale fishery is not currently negatively affecting stock level; it is essential to monitor these attributes to detect future changes or impacts.
巴西Scomberomorus brasiliensis是大西洋西南部拉普拉塔河口以北的小规模渔业中最重要的鱼类。为了管理目的，本研究评估了它们在巴拉那海岸的生殖生物学、大小、年龄和生长情况。该渔场的每月样本(2018年3月至2020年6月)包括933个标本(413个雄性，520个雌性)，叉长210-779毫米，对应于比北部地区小的尺寸。呈负异速生长(b = 2.69159，长-重关系)。各成熟阶段的标本均在研究期间出现，表明该地区产卵期为10 - 6月，高峰期为1 - 3月。性腺长度关系适于证实这一评价。个体生殖力在34,484至390,786个卵母细胞之间变化。成熟发生在L50 = 446.46 mm, t50 = 1.4年，L100 = 588.79 mm, t100 = 2.3年。生长参数为L∞= 771.68 mm, k = 0.65 year-1, t0 = -0.102 year，队列年龄为0.5 ~ 6.5岁。沿着巴拉那海岸的Scomberomorus brasiliensis构成了一个自给自足的群体，与巴西东北部的Scomberomorus brasiliensis没有直接关系。这种小规模渔业目前没有对鱼类数量产生负面影响;监控这些属性以检测未来的变化或影响是至关重要的。
{"title":"Population dynamics of Scomberomorus brasiliensis from a small-scale fishery off Southern Brazil","authors":"P. T. Chaves, P. O. Birnfeld, A. M. Vaz-dos-Santos","doi":"10.1590/2675-2824069.20-016pdtdcc","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-016pdtdcc","url":null,"abstract":"Scomberomorus brasiliensis is the most important fish species of the small-scale fishery off the southwestern Atlantic north of the La Plata estuary. For management purposes, this study evaluated their reproductive biology, size, age and growth along the Parana coast. Monthly samples (March 2018-June 2020) from the fishery comprised 933 specimens (413 males, 520 females), 210-779 mm fork length, corresponding to a size smaller than in the northern areas. It presented negative allometry (b = 2.69159, length-weight relationship). Specimens in all stages of maturity occurred during the study period, indicating spawning in the area from October to June, peaking from January to March. The gonad-length relationship was suitable to confirm this assessment. Individual fecundity varied between 34,484 and 390,786 oocytes. Maturity occurred at L50 = 446.46 mm, t50 = 1.4 years, and L100 = 588.79 mm, and t100 = 2.3 years. The growth parameters were L∞ = 771.68 mm, k = 0.65 year-1 and t0 = -0.102 years, with cohorts aged from 0.5 to 6.5 years. Scomberomorus brasiliensis along the Parana coast constitutes a self-sustaining group, not directly related to that from northeastern Brazil. This small-scale fishery is not currently negatively affecting stock level; it is essential to monitor these attributes to detect future changes or impacts.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44377763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-15DOI: 10.1590/2675-2824069.20-303dfb
D. F. Barboza, L. Skinner
New records of the introduced solitary ascidians, Ciona robusta and Rhodosoma turcicum, have been added to the southwestern Atlantic Ocean, from Cabo Frio to Ilha Grande Bay, Brazil, in surveys conducted since 2009. Both species occurred on natural and artificial substrates, in predator-protected habitats, and regions close to harbors or other maritime activities. The distribution of Ciona robusta was related to water temperature, influenced by upwelling intensity and temperatures below 25oC, while R. turcicum was not sensitive to the range of recorded water temperatures. The occurrence of both species on sites close to maritime terminals suggests vessels as potential vectors.
{"title":"The spread of the introduced ascidians Ciona robusta Hoshino & Tokioka, 1967 and Rhodosoma turcicum (Savigny, 1816) in the southwestern Atlantic","authors":"D. F. Barboza, L. Skinner","doi":"10.1590/2675-2824069.20-303dfb","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-303dfb","url":null,"abstract":"New records of the introduced solitary ascidians, Ciona robusta and Rhodosoma turcicum, have been added to the southwestern Atlantic Ocean, from Cabo Frio to Ilha Grande Bay, Brazil, in surveys conducted since 2009. Both species occurred on natural and artificial substrates, in predator-protected habitats, and regions close to harbors or other maritime activities. The distribution of Ciona robusta was related to water temperature, influenced by upwelling intensity and temperatures below 25oC, while R. turcicum was not sensitive to the range of recorded water temperatures. The occurrence of both species on sites close to maritime terminals suggests vessels as potential vectors.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48336679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-28DOI: 10.1590/2675-2824069.20-009LST
Leonardo Silveira Takase, L. P. Stein, N. Hoff, E. Siegle
ABSTRACT We investigate the distribution of the wave power around the Alcatrazes island, a protected marine reserve in southeastern Brazil, located at 20 nautical miles from the coast of Sao Sebastiao/SP. A 14-year wave time series (2005-2018) extracted from the global WaveWatch III model, was used to obtain the offshore wave climate. Based on the wave climate, a wave propagation model (Delft3D) was applied in order to obtain nearshore information. The most frequent waves are from the east, southeast and south, with heights between 1.0 and 2.0 m and periods of 7 to 10 s. Due to dominant wave direction incidence, the wave power is higher at the more exposed eastern side of the island, with its lee side becoming shadowed from the main wave trains. Magnitudes vary seasonally, with winter and autumn presenting more energetic southerly waves and consequent higher wave power along the rocky island. The wave power distribution is a consequence of the incident wave characteristics and the geomorphology of the island. Our findings are the first assessment of the local wave climate and wave power distribution along the rocky shores of Alcatrazes island, providing important background information for understanding different aspects of its functioning and management.
{"title":"Wave climate and power distribution around a rocky island: Alcatrazes, Brazil","authors":"Leonardo Silveira Takase, L. P. Stein, N. Hoff, E. Siegle","doi":"10.1590/2675-2824069.20-009LST","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-009LST","url":null,"abstract":"ABSTRACT We investigate the distribution of the wave power around the Alcatrazes island, a protected marine reserve in southeastern Brazil, located at 20 nautical miles from the coast of Sao Sebastiao/SP. A 14-year wave time series (2005-2018) extracted from the global WaveWatch III model, was used to obtain the offshore wave climate. Based on the wave climate, a wave propagation model (Delft3D) was applied in order to obtain nearshore information. The most frequent waves are from the east, southeast and south, with heights between 1.0 and 2.0 m and periods of 7 to 10 s. Due to dominant wave direction incidence, the wave power is higher at the more exposed eastern side of the island, with its lee side becoming shadowed from the main wave trains. Magnitudes vary seasonally, with winter and autumn presenting more energetic southerly waves and consequent higher wave power along the rocky island. The wave power distribution is a consequence of the incident wave characteristics and the geomorphology of the island. Our findings are the first assessment of the local wave climate and wave power distribution along the rocky shores of Alcatrazes island, providing important background information for understanding different aspects of its functioning and management.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48129838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-17DOI: 10.1590/2675-2824069.20-002EFSC
E. Costa, J. Dias, L. A. S. Madureira
Editor: Rubens M. Lopes The anthropogenic impact of pollution by plastic debris has threatened marine life inhabiting benthic and pelagic habitats from the poles to the equator (e.g., Ryan and Moloney, 1993; Derraik, 2002; Thompson et al., 2004). The ingestion of plastics by marine organisms is an increasing global trend due to the increase of these polymers in the oceans (e.g., Lusher et al., 2013; Besseling et al., 2015; Lusher et al., 2015; Lusher et al., 2018; Ostle et al., 2019; Neto et al., 2020). After reaching marine ecosystems, plastics can be found either in their large original size (i.e., macroplastic) or in small fragments (i.e., nanoplastics, microplastics, or mesoplastics) (Azevedo-Santos et al., 2019). Thus, the interaction of plastic debris with marine life is expected, and their ingestion has been documented in a wide range of marine organisms, including zooplankton, bivalves, fish, turtles, birds, and marine mammals (Azzarello and Van-Vleet, 1987; Lusher et al., 2015; Romero et al., 2015; Egbeocha et al., 2018). There are several possible reasons for the consumption of plastic debris by marine fish, including mistaking plastic for food because the odor of plastic in the sea is like that of food (Savoca et al., 2017), confusing it with prey species associated with floating plastic material while feeding on them, and preying on smaller organisms that have previously ingested plastics (Possato et al., 2011; Varghese et al., 2013). Records of fish ingesting plastic have increased in scientific literature because of concerns that the ingestion of anthropogenic debris by fish may, in turn, impact human health (Seltenrish, 2015; Lusher et al., 2015; Lusher et al., 2017; Azevedo-Santos et al., 2019). Plastic debris has a direct effect on fish, including the reduction in food uptake, internal abrasion and ulceration, diminished feeding stimulus, reproduction failure, and death following intestinal tract blockage (e.g., Azzarello and Van-Vleet, 1987; Ostle et al., 2019). From an ecological point of view, the ingestion of plastic debris is a route of entry for and potential cause of the biomagnification of toxic chemicals in the marine food web (Egbeocha et al., 2018). However, the environmental consequences of this contamination and the overall impact of plastic ingestion are still unknown, despite the growing number of publications on their presence in marine ecosystems and their ingestion by fish (e.g., Ryan and Moloney, 1993; Thompson et al., 2004; Gago et al., 2020, Neto et al., 2020). However, large pelagic fish, which are widely consumed by humans, show a presence of plastic debris that have the potential to indirectly affect human health (Romero et al., 2015). The common dolphinfish, Coryphaena hippurus Linnaeus, 1758 (Perciformes, Coryphaenidae), is fished in an important commercial and recreational fishery and is widely distributed in tropical and subtropical waters in which the surface water temperatures exceed 20oC (Gibbs and
{"title":"Ingestion of macroplastics by common dolphinfish (Coryphaena hippurus) in the Atlantic Ocean","authors":"E. Costa, J. Dias, L. A. S. Madureira","doi":"10.1590/2675-2824069.20-002EFSC","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-002EFSC","url":null,"abstract":"Editor: Rubens M. Lopes The anthropogenic impact of pollution by plastic debris has threatened marine life inhabiting benthic and pelagic habitats from the poles to the equator (e.g., Ryan and Moloney, 1993; Derraik, 2002; Thompson et al., 2004). The ingestion of plastics by marine organisms is an increasing global trend due to the increase of these polymers in the oceans (e.g., Lusher et al., 2013; Besseling et al., 2015; Lusher et al., 2015; Lusher et al., 2018; Ostle et al., 2019; Neto et al., 2020). After reaching marine ecosystems, plastics can be found either in their large original size (i.e., macroplastic) or in small fragments (i.e., nanoplastics, microplastics, or mesoplastics) (Azevedo-Santos et al., 2019). Thus, the interaction of plastic debris with marine life is expected, and their ingestion has been documented in a wide range of marine organisms, including zooplankton, bivalves, fish, turtles, birds, and marine mammals (Azzarello and Van-Vleet, 1987; Lusher et al., 2015; Romero et al., 2015; Egbeocha et al., 2018). There are several possible reasons for the consumption of plastic debris by marine fish, including mistaking plastic for food because the odor of plastic in the sea is like that of food (Savoca et al., 2017), confusing it with prey species associated with floating plastic material while feeding on them, and preying on smaller organisms that have previously ingested plastics (Possato et al., 2011; Varghese et al., 2013). Records of fish ingesting plastic have increased in scientific literature because of concerns that the ingestion of anthropogenic debris by fish may, in turn, impact human health (Seltenrish, 2015; Lusher et al., 2015; Lusher et al., 2017; Azevedo-Santos et al., 2019). Plastic debris has a direct effect on fish, including the reduction in food uptake, internal abrasion and ulceration, diminished feeding stimulus, reproduction failure, and death following intestinal tract blockage (e.g., Azzarello and Van-Vleet, 1987; Ostle et al., 2019). From an ecological point of view, the ingestion of plastic debris is a route of entry for and potential cause of the biomagnification of toxic chemicals in the marine food web (Egbeocha et al., 2018). However, the environmental consequences of this contamination and the overall impact of plastic ingestion are still unknown, despite the growing number of publications on their presence in marine ecosystems and their ingestion by fish (e.g., Ryan and Moloney, 1993; Thompson et al., 2004; Gago et al., 2020, Neto et al., 2020). However, large pelagic fish, which are widely consumed by humans, show a presence of plastic debris that have the potential to indirectly affect human health (Romero et al., 2015). The common dolphinfish, Coryphaena hippurus Linnaeus, 1758 (Perciformes, Coryphaenidae), is fished in an important commercial and recreational fishery and is widely distributed in tropical and subtropical waters in which the surface water temperatures exceed 20oC (Gibbs and ","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48031113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-26DOI: 10.1590/2675-2824069.20-006akddss
A. K. Sá, M. Cutrim, Denise dos Santos Costa, L. F. Cavalcanti, F. S. Ferreira, A. L. Oliveira, J. H. F. Serejo
Abstract The Bacanga River Estuary is socioeconomically important due to artisanal fishing and aquaculture. It is blocked by a dam and is under human pressure along its drainage basin, intensifying the eutrophication process. This study reports on the occurrence of phytoplankton blooms and trophic state (TSI and TRIX) at six sampling sites during the annual cycle. The estuary was divided into downstream and upstream regions. Higher salinity, turbidity, depth, and lower dissolved oxygen levels were found downstream; whereas, high levels of chlorophyll a and nutrient concentrations were observed in both regions. There were blooms of Leptocylindrus danicus (1.45 × 106 cells L-1) and Skeletonema costatum (1.89 × 106 cells L-1) downstream; whereas phytoflagellate proliferation, such as those of Chlamydomonas sp. (13.17 × 106 cells L-1), Euglena gracilis (7.84 × 106 cells L-1), and Euglena proxima (1.03 × 106 cells L-1) were recorded upstream, with Chlamydomonas sp. as the discriminant species of this zone. Both trophic indices (TSI; TRIX) indicated elevated trophic conditions for the estuary, classifying it as hypereutrophic. Nevertheless, TSI only showed a significant relationship with some specific phytoplankton blooms. Thus, TSI seems to be the trophic index with a better response in the assessment of estuarine ecological functioning.
{"title":"Algal blooms and trophic state in a tropical estuary blocked by a dam (northeastern Brazil)","authors":"A. K. Sá, M. Cutrim, Denise dos Santos Costa, L. F. Cavalcanti, F. S. Ferreira, A. L. Oliveira, J. H. F. Serejo","doi":"10.1590/2675-2824069.20-006akddss","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-006akddss","url":null,"abstract":"Abstract The Bacanga River Estuary is socioeconomically important due to artisanal fishing and aquaculture. It is blocked by a dam and is under human pressure along its drainage basin, intensifying the eutrophication process. This study reports on the occurrence of phytoplankton blooms and trophic state (TSI and TRIX) at six sampling sites during the annual cycle. The estuary was divided into downstream and upstream regions. Higher salinity, turbidity, depth, and lower dissolved oxygen levels were found downstream; whereas, high levels of chlorophyll a and nutrient concentrations were observed in both regions. There were blooms of Leptocylindrus danicus (1.45 × 106 cells L-1) and Skeletonema costatum (1.89 × 106 cells L-1) downstream; whereas phytoflagellate proliferation, such as those of Chlamydomonas sp. (13.17 × 106 cells L-1), Euglena gracilis (7.84 × 106 cells L-1), and Euglena proxima (1.03 × 106 cells L-1) were recorded upstream, with Chlamydomonas sp. as the discriminant species of this zone. Both trophic indices (TSI; TRIX) indicated elevated trophic conditions for the estuary, classifying it as hypereutrophic. Nevertheless, TSI only showed a significant relationship with some specific phytoplankton blooms. Thus, TSI seems to be the trophic index with a better response in the assessment of estuarine ecological functioning.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48878178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-23DOI: 10.1590/2675-2824069.20-014gsdms
Gabriel Serrato de Mendonça Silva, C. Garcia
Abstract A performance evaluation of ocean color chlorophyll-a algorithms was conducted based on the in situ fluorescence chlorophyll concentration (Fchl) measured by a sensor on the buoy SiMCosta-SC01 in coastal waters of South Brazil. The operational algorithms are used in MODIS and VIIRS sensors to derive satellite chlorophyll concentration (Csat). Fchl values were successfully corrected for nonphotochemical quenching (NPQ) by an interpolation of sunrise and sunset daily measurements. A laboratory-derived calibration coefficient was applied to convert the unquenching Fchl values into chlorophyll concentration (Cflu). Overall, linear regression analysis between Cflu and Csat for both sensors showed good results, with the coefficient of determination (R2) varying between 0.88 and 0.96, slopes between 0.92 and 1.02 and intercepts between -0.17 and 0.13. The MODIS algorithm (R2 = 0.96, slope = 1.02, RMSE = 0.16 mg m-3, BIAS = 0.16 mg m-3, for N = 222 and time interval ±1 h) presented slightly better performance than VIIRS (R2 = 0.92, slope = 0.96, RMSE = 0.25 mg m-3, BIAS = -0.25 mg m-3, for N = 284 and time interval ±1 h). These results represent the most comprehensive satellite data analysis for this region, suggesting that the approach may be applicable to other SiMCosta buoys.
{"title":"Evaluation of ocean chlorophyll-a remote sensing algorithms using in situ fluorescence data in Southern Brazilian Coastal Waters","authors":"Gabriel Serrato de Mendonça Silva, C. Garcia","doi":"10.1590/2675-2824069.20-014gsdms","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-014gsdms","url":null,"abstract":"Abstract A performance evaluation of ocean color chlorophyll-a algorithms was conducted based on the in situ fluorescence chlorophyll concentration (Fchl) measured by a sensor on the buoy SiMCosta-SC01 in coastal waters of South Brazil. The operational algorithms are used in MODIS and VIIRS sensors to derive satellite chlorophyll concentration (Csat). Fchl values were successfully corrected for nonphotochemical quenching (NPQ) by an interpolation of sunrise and sunset daily measurements. A laboratory-derived calibration coefficient was applied to convert the unquenching Fchl values into chlorophyll concentration (Cflu). Overall, linear regression analysis between Cflu and Csat for both sensors showed good results, with the coefficient of determination (R2) varying between 0.88 and 0.96, slopes between 0.92 and 1.02 and intercepts between -0.17 and 0.13. The MODIS algorithm (R2 = 0.96, slope = 1.02, RMSE = 0.16 mg m-3, BIAS = 0.16 mg m-3, for N = 222 and time interval ±1 h) presented slightly better performance than VIIRS (R2 = 0.92, slope = 0.96, RMSE = 0.25 mg m-3, BIAS = -0.25 mg m-3, for N = 284 and time interval ±1 h). These results represent the most comprehensive satellite data analysis for this region, suggesting that the approach may be applicable to other SiMCosta buoys.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47880101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.1590/2675-2824069.20-030ccr
Caio Cesar-Ribeiro
(0.16–0.32) and an LC50-48h of 0.10% for Artemia sp. Assays of fertilization and embryo and larval development for L. variegatus found EC50-40 min and EC50-24 h to be 0.011% (0.009–0.013) and 0.00062%, respectively.
{"title":"Lethal effect of lightstick contents on gray shrimps Litopenaeus vannamei","authors":"Caio Cesar-Ribeiro","doi":"10.1590/2675-2824069.20-030ccr","DOIUrl":"https://doi.org/10.1590/2675-2824069.20-030ccr","url":null,"abstract":"(0.16–0.32) and an LC50-48h of 0.10% for Artemia sp. Assays of fertilization and embryo and larval development for L. variegatus found EC50-40 min and EC50-24 h to be 0.011% (0.009–0.013) and 0.00062%, respectively.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67341725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.1590/2675-2824069.21026mg
M. Gaber, Amany Al Sequely, N. A. Monem, M. Balbaa
The detection of cytochrome P450 1A in S . rivulatus liver and gills was used as a biomarker for the exposure to polyaromatic hydrocarbons (PAHs) as organic pollutants along the Bay of Alexandria, Egypt. PAHs were determined in both sediment and S. rivulatus tissues in Abu Qir Bay, Alexandria as a test area and the Matrouh coast as a control area. High levels of PAHs in Abu Qir Bay area and ratios of specific PAH compounds indicate the petrogenic origin of hydrocarbons. Both antioxidant activity and oxidative stress markers increased significantly. The protein expression of P450 1A in the liver and gill of S. rivulatus was markedly induced. Moreover, the toxicity in fish organs was supported by histopathological observations. These data suggest correlation between bioaccumulated PAH and P450 1A induction and provide strong evidence of the importance of P450 1A as a biomarker of the exposure of S. rivulatus to xenobiotics.
{"title":"Effect of polyaromatic hydrocarbons on cellular cytochrome P450 1A induction","authors":"M. Gaber, Amany Al Sequely, N. A. Monem, M. Balbaa","doi":"10.1590/2675-2824069.21026mg","DOIUrl":"https://doi.org/10.1590/2675-2824069.21026mg","url":null,"abstract":"The detection of cytochrome P450 1A in S . rivulatus liver and gills was used as a biomarker for the exposure to polyaromatic hydrocarbons (PAHs) as organic pollutants along the Bay of Alexandria, Egypt. PAHs were determined in both sediment and S. rivulatus tissues in Abu Qir Bay, Alexandria as a test area and the Matrouh coast as a control area. High levels of PAHs in Abu Qir Bay area and ratios of specific PAH compounds indicate the petrogenic origin of hydrocarbons. Both antioxidant activity and oxidative stress markers increased significantly. The protein expression of P450 1A in the liver and gill of S. rivulatus was markedly induced. Moreover, the toxicity in fish organs was supported by histopathological observations. These data suggest correlation between bioaccumulated PAH and P450 1A induction and provide strong evidence of the importance of P450 1A as a biomarker of the exposure of S. rivulatus to xenobiotics.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67342042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.1590/2675-2824069.21019mc
Margherita Cappelletto, R. Santoleri, L. Evangelista, F. Galgani, E. Garcés, Alessandro Giorgetti, F. Fava, B. Herut, K. Hilmi, S. Kholeif, S. Lorito, C. Sammari, Mónica Campillos Lianos, M. Celussi, D. D’Alelio, F. Francocci, G. Giorgi, D. Canu, E. Organelli, A. Pomaro, G. Sannino, M. Segou, S. Simoncelli, A. Babeyko, A. Barbanti, D. Chang-Seng, V. Cardin, R. Casotti, A. Drago, S. E. Asmi, Dina Eparkhina, M. Fichaut, Tatjiana Hema, G. Procaccini, F. Santoro, M. Scoullos, C. Solidoro, F. Trincardi, L. Tunesi, G. Umgiesser, A. Zingone, T. Ballerini, Amel Chaffai, G. Coppini, S. Gruber, J. Knežević, Gaetano Leone, J. Penca, N. Pinardi, G. Petihakis, M. Rio, Mohamed K. Said, Zacharias Siokouros, A. Srour, M. Snoussi, J. Tintoré, V. Vassilopoulou, M. Zavatarelli
This paper presents major gaps and challenges for implementing the UN Decade of Ocean Science for Sustainable Development (2021-2030) in the Mediterranean region. The authors make recommendations on the scientific knowledge needs and co-design actions identified during two consultations, part of the Decade preparatory-phase, framing them in the Mediterranean Sea’s unique environmental and socio-economic perspectives. According to the ‘Mediterranean State of the Environment and Development Report 2020’ by the United Nations Environment Programme Mediterranean Action Plan and despite notable progress, the Mediterranean region is not on track to achieve and fully implement the Sustainable Development Goals of Agenda 2030. Key factors are the cumulative effect of multiple human-induced pressures that threaten the ecosystem resources and services in the global change scenario. The basin, identified as a climate change vulnerability hotspot, is exposed to pollution and rising impacts of climate change. This affects mainly the coastal zones, at increasing risk of extreme events and their negative effects of unsustainable management of key economic assets. Transitioning to a sustainable blue economy is the key for the marine environment’s health and the nourishment of future generations. This challenging context, offering the opportunity of enhancing the knowledge to define science-based measures as well as narrowing the gaps between the Northen and Southern shores, calls for a joint (re)action. The paper reviews the state of the art of Mediterranean Sea science knowledge, sets of trends, capacity development needs, specific challenges, and recommendations for each Decade’s societal outcome. In the conclusions, the proposal for a Mediterranean regional programme in the framework of the Ocean Decade is addressed. The core objective relies on integrating and improving the existing ocean-knowledge, Ocean Literacy, and ocean observing capacities building on international cooperation to reach the “Mediterranean Sea that we want”.
{"title":"The Mediterranean Sea we want","authors":"Margherita Cappelletto, R. Santoleri, L. Evangelista, F. Galgani, E. Garcés, Alessandro Giorgetti, F. Fava, B. Herut, K. Hilmi, S. Kholeif, S. Lorito, C. Sammari, Mónica Campillos Lianos, M. Celussi, D. D’Alelio, F. Francocci, G. Giorgi, D. Canu, E. Organelli, A. Pomaro, G. Sannino, M. Segou, S. Simoncelli, A. Babeyko, A. Barbanti, D. Chang-Seng, V. Cardin, R. Casotti, A. Drago, S. E. Asmi, Dina Eparkhina, M. Fichaut, Tatjiana Hema, G. Procaccini, F. Santoro, M. Scoullos, C. Solidoro, F. Trincardi, L. Tunesi, G. Umgiesser, A. Zingone, T. Ballerini, Amel Chaffai, G. Coppini, S. Gruber, J. Knežević, Gaetano Leone, J. Penca, N. Pinardi, G. Petihakis, M. Rio, Mohamed K. Said, Zacharias Siokouros, A. Srour, M. Snoussi, J. Tintoré, V. Vassilopoulou, M. Zavatarelli","doi":"10.1590/2675-2824069.21019mc","DOIUrl":"https://doi.org/10.1590/2675-2824069.21019mc","url":null,"abstract":"This paper presents major gaps and challenges for implementing the UN Decade of Ocean Science for Sustainable Development (2021-2030) in the Mediterranean region. The authors make recommendations on the scientific knowledge needs and co-design actions identified during two consultations, part of the Decade preparatory-phase, framing them in the Mediterranean Sea’s unique environmental and socio-economic perspectives. According to the ‘Mediterranean State of the Environment and Development Report 2020’ by the United Nations Environment Programme Mediterranean Action Plan and despite notable progress, the Mediterranean region is not on track to achieve and fully implement the Sustainable Development Goals of Agenda 2030. Key factors are the cumulative effect of multiple human-induced pressures that threaten the ecosystem resources and services in the global change scenario. The basin, identified as a climate change vulnerability hotspot, is exposed to pollution and rising impacts of climate change. This affects mainly the coastal zones, at increasing risk of extreme events and their negative effects of unsustainable management of key economic assets. Transitioning to a sustainable blue economy is the key for the marine environment’s health and the nourishment of future generations. This challenging context, offering the opportunity of enhancing the knowledge to define science-based measures as well as narrowing the gaps between the Northen and Southern shores, calls for a joint (re)action. The paper reviews the state of the art of Mediterranean Sea science knowledge, sets of trends, capacity development needs, specific challenges, and recommendations for each Decade’s societal outcome. In the conclusions, the proposal for a Mediterranean regional programme in the framework of the Ocean Decade is addressed. The core objective relies on integrating and improving the existing ocean-knowledge, Ocean Literacy, and ocean observing capacities building on international cooperation to reach the “Mediterranean Sea that we want”.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"2018 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67341953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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