Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia

Roquetas de Mar, Spain

Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia

Roquetas de Mar, Spain

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Darriba S.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Aquaculture Research | Year: 2011

This study investigated razor clam Ensis arcuatus culture from larval rearing to commercial size to assess it's aquaculture potential. Broodstock was spawned several times in hatchery facilities to demonstrate that larval availability is not a constraint for hatchery production. Larval culture lasted 20 days, showing an average survival of 14.35%. The razor clam seed reached a size of 28.5mm at 4 months. Seed culture is feasible; however, it is constrained by the fact that razor clams need to be buried. Higher survival was observed when culturing razor clam seed with a substrate (82-83%), irrespective of the substrate grain size, while containers held without a substrate showed a significantly lower survival (56.5%). We showed that it is possible to rear E. arcuatus juveniles in bottles, with survival as high as 94-95% being achieved. The length increase of the hatchery-produced E. arcuatus over 600 days was described by the equation LnL=4.5+(-141.17/t), where L is length in mm and t is time in days. On-growing showed adequate survival rates and it took 2-3 years to reach commercial size. © 2010 Blackwell Publishing Ltd.


Otero P.,C.O. A Coruna. Paseo Maritimo Alcalde Francisco Vazquez | Ruiz-Villarreal M.,C.O. A Coruna. Paseo Maritimo Alcalde Francisco Vazquez | Allen-Perkins S.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Vila B.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Cabanas J.M.,FARO
Marine Pollution Bulletin | Year: 2014

This study analyzes the coastal exposure to potential oil spills coming from the various corridors that constitute the Finisterre Traffic Separation Scheme (NW Iberia). A Lagrangian model was executed with results from a realistic configuration of an ocean model during 2012, validated here against High-Frequency (HF) radar-derived surface currents. Virtual particles were released each hour and followed during the next 4. days. A series of maps summarize which regions would be impacted and when. We have learnt, for example, that Cape Finisterre is the most affected area under a wide range of scenarios and that a sensitive area such as the National Park of the Atlantic Islands would require protective actions in less than 24. h if oil spills from the south eventually occurred. A complete analysis by corridor and during specific wind events is available through a web tool, which could be useful for decision makers in case of contingency. © 2014 Elsevier Ltd.


Bravo I.,FARO | Fraga S.,FARO | Isabel Figueroa R.,CSIC - Institute of Marine Sciences | Pazos Y.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | And 2 more authors.
Deep-Sea Research Part II: Topical Studies in Oceanography | Year: 2010

A study of Gymnodinium catenatum and Alexandrium minutum blooms on the Galician coast was conducted from 2005 to 2007 in order to increase knowledge of the mechanisms governing recurrent blooms of these species. Considerable differences in their bloom dynamics were observed. G. catenatum blooms occurred in autumn and winter, following the pattern previously reported in the literature: they began off-shore and were advected to the Galician rias when a relaxation of the coastal upwelling occurred. On the other hand, A. minutum blooms developed inside embayments in spring and summer during the upwelling season and were associated with water stability and stratification. Both the vegetative population and the cyst distribution of A. minutum were related to less saline water from freshwater river outputs, which support a saline-gradient relationship postulated herein for this species. Dinoflagellates may produce both long-term double-walled cysts (resting) and short-term pellicle cysts. Resting cyst deposition and distribution in sediments showed that seeding occurred during the blooms of both species. However, the relationship between the cyst distribution in the sediments in Baiona Bay and the intensity and occurrence of G. catenatum blooms, suggests that the latter are not directly related to resting cyst germination. Moreover, the results presented in the present study point to other difference between the two species, such as the detection of pellicle cysts only for A. minutum. Finally, we discuss how the life cycle strategies of these two species may help to explain the different mechanisms of bloom formation reported herein. © 2009 Elsevier Ltd. All rights reserved.


Carro N.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Garcia I.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Ignacio M.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Mouteira A.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Bulletin of Environmental Contamination and Toxicology | Year: 2016

PCBs were analyzed in two species of oyster (Crassostrea gigas and Ostrea edulis) cultured in intertidal beds and rafts coming from the Galician Rías during the period 2011–2014. PCBs were also analyzed in mussel (Mytilus galloprovincialis) collected in the same Rías during 2011. The main objective of this work is to investigate the distribution of PCBs in Galician oysters and to study their suitability as bioindicator in comparison to mussels. The levels of ΣPCBs (ten congeners) ranged from 5.58 to 179.49 ng g−1 d.w. The effect of biological parameters (shell length, lipid content and condition index) on bioaccumulation of PCBs was also evaluated. ANOVA showed a statistically significant difference between species for higher chlorinated biphenyls (CBs 153 and 138). The spatial patterns were investigated. Principal Component Analysis (PCA) showed differences between geographical areas (Rías Altas, Centrales and Baixas) in the distribution of PCBs. © 2016 European Union


Carro N.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Garcia I.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Ignacio M.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Mouteira A.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Bulletin of Environmental Contamination and Toxicology | Year: 2012

Levels of organochlorine pesticides (OCPs), including RDDTs, c-HCH, HCB, aldrin, isodrin, transnonachlor, heptachlor and dieldrin, were determined in the razor clam, Ensis siliqua, collected monthly from February 2003 to April 2004 from the Islas Ćes in Ría de Vigo (Galicia, Spain). The sum of DDTs ranged from 2.17 to 26.9 ng g-1 dry weight (dw). Principal component analysis showed seasonal trends in the levels of some OCPs (c-HCH and dieldrin). Pearson correlations (p\0.05) were observed between OCP levels and the biometric parameters of condition index and body lipids. © Springer Science+Business Media, LLC 2012.


Carro N.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Cobas J.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Garcia I.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Ignacio M.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Mouteira A.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Chemosphere | Year: 2014

Contamination of organochlorine pesticides (OCPs) such as DDT and its metabolites (σDDs), γ-HCH (hexachlorocyclohexane), HCB (hexachlorobenzene), aldrin, endrin, isodrin and trans-nonachlor were investigated in wild mussels (Mytilus galloprovincialis) collected from Galician Rías (Rías of Ferrol, A Coruña, Muros, Arousa, Pontevedra and Vigo) during the period 1998-2012. Biological parameters, lipid content, shell length and condition index, were also studied. The OCPs levels in the wild mussel were in the order σDDs>γ-HCH>HCB. The other pesticides, aldrin, endrin, isodrin and trans-nonachlor, were not detected or were below the analytical detection limit. All concentrations found in these samples were below the allowable limits for human consumption (Regulation (EC) no. 396/2005). Univariate analysis confirmed that levels of some compounds presented significant relation with biological parameters. Multivariate analysis of the OCPs levels revealed significantly differences between studied Rías, samples from Ría of Ferrol had the highest levels of these compounds (values of σDDs ranged from 3.9 to 4.2ngg-1ww) and samples from Ría of Arousa, the lowest levels (values of σDDs from 1.3 to 2.4ngg-1ww). Temporal trends showed a decrease of OCPs levels along the studied period 1998-2012 in the Galician Rías. © 2013 Elsevier Ltd.


Carro N.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Garcia I.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Ignacio M.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Mouteira A.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Science of the Total Environment | Year: 2015

PCBs were analyzed in raft mussels cultured in several polygons from Galician Rías (Rías of Ares-Betanzos, Muros-Noia, Arousa, Pontevedra and Vigo) during the period 1998-2013. The main aim of this work is study the quality of culture marine environment in relation to PCBs compounds. We report the results of a monitoring. The mean levels of σPCBs (ten congeners) ranged from 7.41 to 59.50ngg-1dw. The isomer concentrations in the Mytilus galloprovincialis cultured in raft were in the order hexachlorobiphenyls>pentachlorobiphenyls>tetrachlorbiphenyls>trichlorobiphenyls. Some biological parameters of mussel were also investigated (shell length, lipid content and condition index) in order to know their influence on ability of PCBs accumulation. ANOVA analysis confirms that levels of most of congeners had a significant relation (p<0.05) with shell length. The geographical patterns and temporal variations of PCBs were also investigated. Principal Component Analysis (PCA) showed differences between geographic areas (Rías) in the distribution of PCBs levels. Samples coming from Rías of Vigo and Ares-Betanzos presented the highest levels of PCBs and samples from Rías of Arousa and Muros-Noia had the lowest levels of these compounds. Time trends (linear regressions) showed a decline of levels of PCB congeners along the period 1998-2013. © 2015.


Carro N.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Garcia I.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Ignacio M.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia | Mouteira A.,Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Environment International | Year: 2010

PCBs were determined in wild mussel samples collected in several points from Galician Rías (Rías de Ferrol, A Coruña, Muros, Vigo and Arousa), Spain, during the period 1998-2008. The concentration levels of ΣPCBs ranged from 0.62 to 107.5ngg-1, w.w. The isomer concentrations in the Mytilus galloprovincialis were in the order hexachlorobiphenyls>pentachlorobiphenyls>tetrachlorbiphenyls>trichlorobiphenyls. CBs 153, 138 and 101 congeners were the most abundant in these samples. Two biological parameters, fat content and condition index (CI), have also been investigated for these mussel samples. Univariate techniques confirm that levels of some compounds, CBs 28, 52, 138, 153, and 180, presented significant relation (p<0.05) with biological parameters. Multivariate techniques of data exploration such as Principal Component Analysis (PCA) showed that spatial trends of PCB levels appeared in the studied samples. Rias de Ferrol and A Coruña presented the highest levels of PCBs and Ría de Arousa the lowest levels of these compounds. In general, temporal trends (linear regressions) showed a decrease of PCB levels along the period 1998-2008. © 2010 Elsevier Ltd.


PubMed | Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Type: | Journal: The Science of the total environment | Year: 2015

PCBs were analyzed in raft mussels cultured in several polygons from Galician Ras (Ras of Ares-Betanzos, Muros-Noia, Arousa, Pontevedra and Vigo) during the period 1998-2013. The main aim of this work is study the quality of culture marine environment in relation to PCBs compounds. We report the results of a monitoring. The mean levels of PCBs (ten congeners) ranged from 7.41 to 59.50ngg(-1)dw. The isomer concentrations in the Mytilus galloprovincialis cultured in raft were in the order hexachlorobiphenyls>pentachlorobiphenyls>tetrachlorbiphenyls>trichlorobiphenyls. Some biological parameters of mussel were also investigated (shell length, lipid content and condition index) in order to know their influence on ability of PCBs accumulation. ANOVA analysis confirms that levels of most of congeners had a significant relation (p<0.05) with shell length. The geographical patterns and temporal variations of PCBs were also investigated. Principal Component Analysis (PCA) showed differences between geographic areas (Ras) in the distribution of PCBs levels. Samples coming from Ras of Vigo and Ares-Betanzos presented the highest levels of PCBs and samples from Ras of Arousa and Muros-Noia had the lowest levels of these compounds. Time trends (linear regressions) showed a decline of levels of PCB congeners along the period 1998-2013.


PubMed | Instituto Tecnoloxico Para O Control Do Medio Marino Of Galicia
Type: Comparative Study | Journal: Bulletin of environmental contamination and toxicology | Year: 2016

PCBs were analyzed in two species of oyster (Crassostrea gigas and Ostrea edulis) cultured in intertidal beds and rafts coming from the Galician Ras during the period 2011-2014. PCBs were also analyzed in mussel (Mytilus galloprovincialis) collected in the same Ras during 2011. The main objective of this work is to investigate the distribution of PCBs in Galician oysters and to study their suitability as bioindicator in comparison to mussels. The levels of PCBs (ten congeners) ranged from 5.58 to 179.49 ng g(-1) d.w. The effect of biological parameters (shell length, lipid content and condition index) on bioaccumulation of PCBs was also evaluated. ANOVA showed a statistically significant difference between species for higher chlorinated biphenyls (CBs 153 and 138). The spatial patterns were investigated. Principal Component Analysis (PCA) showed differences between geographical areas (Ras Altas, Centrales and Baixas) in the distribution of PCBs.

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