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New observations of non-indigenous species (NIS) in coastal waters, such as the Gulf of Cadiz (Spain) have increased since 1980 and more or less exponentially in the last five years. Ballast water has become the most significant pathway for unintentional introductions of NIS into marine ecosystems. For example, the marine larvae of crustacean decapods that inhabit the water column could be transported in ballast water. Although elevated concentrations of metals are toxic to many marine organisms, some of them have evolved effective detoxification, or avoidance mechanisms making it possible to consider they have a superior ability to withstand exposures to these toxicants. In this text, we try to reinforce the hypothesis that anthropogenic modifications (such as chemical alterations and modified environments) benefit NIS with broad environmental tolerances. Taking these risks into account, a reinforcement of efficient Ballast Water Management Systems to respond to today’s challenging environmental conditions is discussed.
Enrique González-Ortegón; Javier Moreno-Andrés. Anthropogenic Modifications to Estuaries Facilitate the Invasion of Non-Native Species. Processes 2021, 9, 740 .
AMA StyleEnrique González-Ortegón, Javier Moreno-Andrés. Anthropogenic Modifications to Estuaries Facilitate the Invasion of Non-Native Species. Processes. 2021; 9 (5):740.
Chicago/Turabian StyleEnrique González-Ortegón; Javier Moreno-Andrés. 2021. "Anthropogenic Modifications to Estuaries Facilitate the Invasion of Non-Native Species." Processes 9, no. 5: 740.
Temperature is a well-known environmental factor that affects the survival rate and development times of larvae in many brachyuran species. Intertidal species, such as the stone crab Xantho poressa are subject to aquatic and aerial temperature conditions, which make them suitable model species to analyse the effects of climate change. In this study, we analyse the effects of temperature on the duration of embryonic and larval development, as well as larval survival, of X. poressa under laboratory conditions. For brood incubation times, 18 ovigerous females were maintained at three different constant temperatures (17, 21 and 25 °C) in seawater (salinity of 35) until hatching. The larvae from other three ovigerous females were reared individually at the same temperature and in the same salinity conditions as for the brood incubation experiments. Embryonic incubation times decreased as temperature increased. Mean incubation times ranged between 23 and 9 days at 17 and 25 °C, respectively. Larvae development was completed at the three temperatures tested with the highest survival rate occurring at 25 °C. The duration of larval development also decreased with increasing temperature. The mean number of days from hatching to the megalopa stage ranged between 35 (17 °C) and 15 days (25 °C). An additional zoeal stage (ZV) was observed at the lowest temperature tested (17 °C).
Nebis A. Navarro-Ojeda; Jose A. Cuesta; Enrique González-Ortegón. Temperature effects on the early ontogenetic stages of the intertidal stone crab Xantho poressa (Olivi, 1792). Journal of Experimental Marine Biology and Ecology 2021, 541, 151567 .
AMA StyleNebis A. Navarro-Ojeda, Jose A. Cuesta, Enrique González-Ortegón. Temperature effects on the early ontogenetic stages of the intertidal stone crab Xantho poressa (Olivi, 1792). Journal of Experimental Marine Biology and Ecology. 2021; 541 ():151567.
Chicago/Turabian StyleNebis A. Navarro-Ojeda; Jose A. Cuesta; Enrique González-Ortegón. 2021. "Temperature effects on the early ontogenetic stages of the intertidal stone crab Xantho poressa (Olivi, 1792)." Journal of Experimental Marine Biology and Ecology 541, no. : 151567.
Modelling the environmental factors influencing the spatial variation of fish early life stages density and their drift history can identify the key biological and physical processes for the recruitment variability. Distance-based linear multivariate techniques were used to characterize the spawning areas of the European anchovy Engraulis encrasicolus in the Gulf of Cadiz (GoC). Chlorophyll is the environmental variable that best characterized its spawning areas with a time-lag of three days. The use of Lagrangian models to simulate the dispersal of small pelagic species more dependent on advection such as the European anchovy early life stages (early larvae and eggs) in the GoC could provide the degree of connectivity between spawning and nursery areas and identify the physical drivers of the recruitment variability. The larval final destination is critical for the survival of a marine species which is coastal-dependent during its early life stages. Simulations with a Lagrangian transport model in the Southwest Iberian Peninsula were performed during the most intense spawning peak of 2016, when a strong and persistent countercurrent event developed. Most of the simulated early life stages were transported to the western Portuguese coast and, to a lesser extent, to the Atlantic oligotrophic waters, suggesting an increase in the connectivity between the subdivision 9a South and West components. Although different environmental processes occurring during ontogenetic stages, as well as overfishing, among others, can explain part of the variability observed in recruitment, events such as the development of coastal countercurrents during the spawning season could partly account for an increase of anchovy on the western Portuguese coast and a decrease in the Gulf of Cadiz one year later.
Andrea Casaucao; Enrique González-Ortegón; María P. Jiménez; Ana Teles-Machado; Sandra Plecha; Alvaro J. Peliz; Irene Laiz. Assessment of the spawning habitat, spatial distribution, and Lagrangian dispersion of the European anchovy (Engraulis encrasicolus) early stages in the Gulf of Cadiz during an apparent anomalous episode in 2016. Science of The Total Environment 2021, 781, 146530 .
AMA StyleAndrea Casaucao, Enrique González-Ortegón, María P. Jiménez, Ana Teles-Machado, Sandra Plecha, Alvaro J. Peliz, Irene Laiz. Assessment of the spawning habitat, spatial distribution, and Lagrangian dispersion of the European anchovy (Engraulis encrasicolus) early stages in the Gulf of Cadiz during an apparent anomalous episode in 2016. Science of The Total Environment. 2021; 781 ():146530.
Chicago/Turabian StyleAndrea Casaucao; Enrique González-Ortegón; María P. Jiménez; Ana Teles-Machado; Sandra Plecha; Alvaro J. Peliz; Irene Laiz. 2021. "Assessment of the spawning habitat, spatial distribution, and Lagrangian dispersion of the European anchovy (Engraulis encrasicolus) early stages in the Gulf of Cadiz during an apparent anomalous episode in 2016." Science of The Total Environment 781, no. : 146530.
The study of the recent colonization of a symbiont and its interaction with host communities in new locations is an opportunity to understand how they interact. The use of isotopic ratios in trophic ecology can provide measurements of a species’ isotopic niche, as well as knowledge about how the isotopic niches between symbiont and host species overlap. Stable isotope measurements were used to assess the sources of carbon assimilated by the host species (the bivalves Mytilus galloprovincialis and Scrobicularia plana) and their associated symbiont pea crab Afropinnotheres monodi, which occurs within these bivalves’ mantle cavities. The mixing model estimates suggest that all of them assimilate carbon from similar sources, particularly from pseudofaeces and particulate organic matter in this symbiotic system based on filter feeding. The symbiotic species occupy comparable trophic levels and its association seems to be commensal or parasitic depending on the duration of such association. The pea crab A. monodi reflects a sex-specific diet, where males are more generalist than the soft females because the latter’s habitat is restricted to the host bivalve. The high isotopic overlap between soft females and M. galloprovincialis may reflect a good commensal relationship with the host.
Enrique González-Ortegón; Marta Perez-Miguel; Jose I Navas; Pilar Drake; Jose A Cuesta. Isotopic niche provides an insight into the ecology of a symbiont during its geographic expansion. Current Zoology 2021, 1 .
AMA StyleEnrique González-Ortegón, Marta Perez-Miguel, Jose I Navas, Pilar Drake, Jose A Cuesta. Isotopic niche provides an insight into the ecology of a symbiont during its geographic expansion. Current Zoology. 2021; ():1.
Chicago/Turabian StyleEnrique González-Ortegón; Marta Perez-Miguel; Jose I Navas; Pilar Drake; Jose A Cuesta. 2021. "Isotopic niche provides an insight into the ecology of a symbiont during its geographic expansion." Current Zoology , no. : 1.
The real distribution range of a species is mostly unknown due to the lack of sampling in certain regions in the world. This may be especially problematic for freshwater species in the Mediterranean basin since its freshwater inhabitants are taxa highly sensitive to anthropogenic disturbances. The cytochrome oxidase subunit 1 (COI) gene in Atyaephyra recognized seven Atyaephyra species in the Mediterranean basin in recent years. However, the lack of sampling in the Middle East does not help to clarify what Atyaephyra species are present in this region and their distributions. The most extended species in the area is A. orientalis, while A. tuerkayi has been found only in the River Nahr Al-Kabir, which is located along the borders of Lebanon with Syria. DNA barcodes of Atyaephyra specimens collected in this study confirm the first record of A. tuerkayi in Turkey. In addition, Palaemon turcorum, an endemic species to the Sakarya River Basin which flows into the Black sea was collected outside this basin, in rivers of the Mediterranean coast. The fact that the Middle East has not been well surveyed for shrimp could explain the unknown distribution of these species.
Enrique González-Ortegón; Deniz Innal; Jose A. Cuesta. Atyaephyra tuerkayi Christodoulou et al., 2012 and Palaemon turcorum (Holthuis, 1961) (Decapoda, Caridea) in the Middle Eastern Region of the Mediterranean. Turkish Journal of Fisheries and Aquatic Sciences 2020, 21, 117 -123.
AMA StyleEnrique González-Ortegón, Deniz Innal, Jose A. Cuesta. Atyaephyra tuerkayi Christodoulou et al., 2012 and Palaemon turcorum (Holthuis, 1961) (Decapoda, Caridea) in the Middle Eastern Region of the Mediterranean. Turkish Journal of Fisheries and Aquatic Sciences. 2020; 21 (3):117-123.
Chicago/Turabian StyleEnrique González-Ortegón; Deniz Innal; Jose A. Cuesta. 2020. "Atyaephyra tuerkayi Christodoulou et al., 2012 and Palaemon turcorum (Holthuis, 1961) (Decapoda, Caridea) in the Middle Eastern Region of the Mediterranean." Turkish Journal of Fisheries and Aquatic Sciences 21, no. 3: 117-123.
The ability of aquatic organisms to sense the surrounding environment chemically and interpret such signals correctly is crucial for their ecological niche and survival. Although it is an oversimplification of the ecological interactions, we could consider that a significant part of the decisions taken by organisms are, to some extent, chemically driven. Accordingly, chemical contamination might interfere in the way organisms behave and interact with the environment. Just as any environmental factor, contamination can make a habitat less attractive or even unsuitable to accommodate life, conditioning to some degree the decision of organisms to stay in, or move from, an ecosystem. If we consider that contamination is not always spatially homogeneous and that many organisms can avoid it, the ability of contaminants to repel organisms should also be of concern. Thus, in this critical review, we have discussed the dual role of contamination: toxicity (disruption of the physiological and behavioral homeostasis) vs. repellency (contamination-driven changes in spatial distribution/habitat selection). The discussion is centered on methodologies (forced exposure against non-forced multi-compartmented exposure systems) and conceptual improvements (individual stress due to the toxic effects caused by a continuous exposure against contamination-driven spatial distribution). Finally, we propose an approach in which Stress and Landscape Ecology could be integrated with each other to improve our understanding of the threat contaminants represent to aquatic ecosystems.
Cristiano V. M. Araújo; Abdelmourhit Laissaoui; Daniel C. V. R. Silva; Eloisa Ramos-Rodríguez; Enrique González-Ortegón; Evaldo L. G. Espíndola; Francisco Baldó; Freylan Mena; Gema Parra; Julián Blasco; Julio López-Doval; Marta Sendra; Mohamed Banni; Mohammed Ariful Islam; Ignacio Moreno-Garrido. Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment? Toxics 2020, 8, 118 .
AMA StyleCristiano V. M. Araújo, Abdelmourhit Laissaoui, Daniel C. V. R. Silva, Eloisa Ramos-Rodríguez, Enrique González-Ortegón, Evaldo L. G. Espíndola, Francisco Baldó, Freylan Mena, Gema Parra, Julián Blasco, Julio López-Doval, Marta Sendra, Mohamed Banni, Mohammed Ariful Islam, Ignacio Moreno-Garrido. Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment? Toxics. 2020; 8 (4):118.
Chicago/Turabian StyleCristiano V. M. Araújo; Abdelmourhit Laissaoui; Daniel C. V. R. Silva; Eloisa Ramos-Rodríguez; Enrique González-Ortegón; Evaldo L. G. Espíndola; Francisco Baldó; Freylan Mena; Gema Parra; Julián Blasco; Julio López-Doval; Marta Sendra; Mohamed Banni; Mohammed Ariful Islam; Ignacio Moreno-Garrido. 2020. "Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment?" Toxics 8, no. 4: 118.
Observations of previously unrecorded non-native species in the Gulf of Cadiz (Spain), situated between the Atlantic Ocean and the Mediterranean Sea, have accelerated since 1980, and increased rapidly in the past 5 years. Four new records of decapod crustaceans have been detected in this region: the African snapping shrimp Alpheus sp., the West African cleaner shrimp Lysmata uncicornis, the Indo-West Pacific giant tiger prawn, Penaeus monodon, and the Atlantic blue crab Callinectes sapidus. The introduction and establishment of these species into the coastal waters of this region, the southernmost Atlantic coast of Spain may have been influenced by recent anthropogenic alteration of habitat, particularly estuaries and salt marshes, and by climate change facilitating the spread of warm water biota.
Enrique González-Ortegón; Stuart Jenkins; Bella S. Galil; Pilar Drake; Jose A. Cuesta. Accelerated invasion of decapod crustaceans in the southernmost point of the Atlantic coast of Europe: A non-natives’ hot spot? Biological Invasions 2020, 22, 3487 -3492.
AMA StyleEnrique González-Ortegón, Stuart Jenkins, Bella S. Galil, Pilar Drake, Jose A. Cuesta. Accelerated invasion of decapod crustaceans in the southernmost point of the Atlantic coast of Europe: A non-natives’ hot spot? Biological Invasions. 2020; 22 (12):3487-3492.
Chicago/Turabian StyleEnrique González-Ortegón; Stuart Jenkins; Bella S. Galil; Pilar Drake; Jose A. Cuesta. 2020. "Accelerated invasion of decapod crustaceans in the southernmost point of the Atlantic coast of Europe: A non-natives’ hot spot?" Biological Invasions 22, no. 12: 3487-3492.
The first case of abnormal leucism in the European Sardine or Pilchard Sardina pilchardus (Walbaum, 1792) is reported. A few sardines with abnormal pigmentation were captured by fishermen in the northern part of the Gulf of Cadiz (SW Atlantic coast), between Portugal and Spain, and one specimen was presented to the authors for examination. Species identification was verified using both morphological and genetic criteria. Despite the relative abundance of sardines along the Atlantic coast of the Iberian Peninsula, the current specimen represents the first known case of leucism in S. pilchardus. The observed colour aberration may have been caused by either heavy metal pollutants and/or a high level of endogamy in this heavily exploited local sardine stock.
E. González-Ortegón; P. Drake; D.T.G. Quigley; Jose A. Cuesta. Leucism in the European sardine Sardina pilchardus (Clupeidae). Ecological Indicators 2020, 117, 106544 .
AMA StyleE. González-Ortegón, P. Drake, D.T.G. Quigley, Jose A. Cuesta. Leucism in the European sardine Sardina pilchardus (Clupeidae). Ecological Indicators. 2020; 117 ():106544.
Chicago/Turabian StyleE. González-Ortegón; P. Drake; D.T.G. Quigley; Jose A. Cuesta. 2020. "Leucism in the European sardine Sardina pilchardus (Clupeidae)." Ecological Indicators 117, no. : 106544.
The present study reports the occurrence of several specimens of the African caridean shrimp Lysmata uncicornis Holthuis & Maurin, 1952 in the NE Atlantic coast (Gulf of Cadiz, Spain and the Algarve, Portugal). Lysmata uncicornis is a poorly studied species that has been originally described from the Atlantic waters of Morocco, where it was first collected inside the port of Casablanca in a rocky bottom at 4–5-m depth. While no scientific publication has previously reported this species outside the waters of Morocco, several specimens have been collected in the coastal waters of the Gulf of Cadiz and the Algarve. This species may be able to expand successfully northward along European waters, probably favoured by global warming. It is possible that this expansion may also be enhanced through the marine aquarium trade. Recently, Lysmata arvoredensis Giraldes, Macedo, Brandão, Baeza & Freire, 2018 a new species of shrimp from the south coast of Brazil was described. However, morphological and genetic comparisons revealed no differences between L. uncicornis and L. arvoredensis. Therefore, L. arvoredensis should be considered as a junior synonym of L. uncicornis. While L. uncicornis may well be an amphi-Atlantic species, such as L. grabhami (Gordon, 1935), for now, the introduction of L. uncicornis in Brazilian waters cannot be ruled out.
E. González-Ortegón; J. E. García-Raso; R. Calado; I. López de la Rosa; M. Guerrero; J.A. Cuesta. Atlantic expansion of the African caridean shrimp Lysmata uncicornis Holthuis & Maurin, 1952 (Caridea: Lysmatidae). Marine Biodiversity 2020, 50, 1 -9.
AMA StyleE. González-Ortegón, J. E. García-Raso, R. Calado, I. López de la Rosa, M. Guerrero, J.A. Cuesta. Atlantic expansion of the African caridean shrimp Lysmata uncicornis Holthuis & Maurin, 1952 (Caridea: Lysmatidae). Marine Biodiversity. 2020; 50 (2):1-9.
Chicago/Turabian StyleE. González-Ortegón; J. E. García-Raso; R. Calado; I. López de la Rosa; M. Guerrero; J.A. Cuesta. 2020. "Atlantic expansion of the African caridean shrimp Lysmata uncicornis Holthuis & Maurin, 1952 (Caridea: Lysmatidae)." Marine Biodiversity 50, no. 2: 1-9.
The GoC shelf waters present much higher concentrations of dissolved Cu, Cd, and Zn than other coastal areas, constituting an important source of these elements onto its neighbouring basins, i.e., the Atlantic Ocean and the Mediterranean Sea. In this study we assessed the role of the GoC surface currents in the trace metals transport. For this purpose, ten dissolved (<0.22 µm) trace metals were sampled (Ag, Cd, Co, Cu, Fe, Mo, Ni, Pb, Zn, V) along the GoC continental shelf, and their spatial and temporal distribution was interpreted according to the surface circulation. Results show that the complex surface circulation over the shelf confines the metals concentration mainly along the inner shelf and determines their transport patterns: under southeastward currents, Cd, Co, Cu, Ni, and Pb are transported toward the Mediterranean Sea; under northwestward countercurrents, Cd, Co, Cu, Fe, Ni, and Zn are transported toward the southern and, occasionally, the western Portuguese shelf; under variable currents, Ag, Cd, Co, Cu, Fe, Pb, and Zn tend to accumulate near their source. Considering that some of these metals have not been analysed before in this region (Ag, Mo, V), or that the spatial distribution of certain metals (Ag, Fe, Mo, Pb, V) has not been interpreted in terms of the ocean circulation, this work could be considered as a baseline study for future comparisons.
I. Laiz; S. Plecha; A. Teles-Machado; E. González-Ortegón; D. Sánchez-Quiles; A. Cobelo-García; D. Roque; A. Peliz; R.F. Sánchez-Leal; A. Tovar-Sánchez. The role of the Gulf of Cadiz circulation in the redistribution of trace metals between the Atlantic Ocean and the Mediterranean Sea. Science of The Total Environment 2019, 719, 134964 .
AMA StyleI. Laiz, S. Plecha, A. Teles-Machado, E. González-Ortegón, D. Sánchez-Quiles, A. Cobelo-García, D. Roque, A. Peliz, R.F. Sánchez-Leal, A. Tovar-Sánchez. The role of the Gulf of Cadiz circulation in the redistribution of trace metals between the Atlantic Ocean and the Mediterranean Sea. Science of The Total Environment. 2019; 719 ():134964.
Chicago/Turabian StyleI. Laiz; S. Plecha; A. Teles-Machado; E. González-Ortegón; D. Sánchez-Quiles; A. Cobelo-García; D. Roque; A. Peliz; R.F. Sánchez-Leal; A. Tovar-Sánchez. 2019. "The role of the Gulf of Cadiz circulation in the redistribution of trace metals between the Atlantic Ocean and the Mediterranean Sea." Science of The Total Environment 719, no. : 134964.
Naturalised populations in estuaries are characteristic of non-native species tolerant to the salinity gradient. The non-native isopod Synidotea laticauda, since the first record in 1991 in a European estuary, has been continuously recorded in others (e.g. in 1994 in the Guadalquivir estuary). Possible links between physiology and its successful establishment in the Guadalquivir estuary were explored through the combination of physiological studies and field distribution (7 years). Survival, osmoregulation and potential respiration rate were estimated under different experimental salinity conditions. This non-native species is naturalised, with presence of juveniles and adults during most of the year. Spatial patterns were closely related to the salinity gradient showing the highest densities at its isosmotic point (salinity = 20). Survival experiments showed a high tolerance (survival > 80%) to salinity changes between 5 and 35 and no mortality close to its isosmotic point. In addition, acute salinity changes had a clear effect on the potential respiration rate. Overall, our results suggests that the weak osmoregulatory capacity of S. laticauda determined its salinity-dependent distribution pattern, showing high densities at physiologically more favourable salinities, minimizing the energy required for osmoregulation and therefore its mortality risk.
M.Carmen Ruiz-Delgado; Enrique González-Ortegón; Inma Herrera; Pilar Drake; Bruno Almón; Cesar Vilas; Francisco Baldó. Physiological responses to estuarine stress gradient affect performance and field distribution of the non-native crustacean Synidotea laticauda. Estuarine, Coastal and Shelf Science 2019, 225, 106233 .
AMA StyleM.Carmen Ruiz-Delgado, Enrique González-Ortegón, Inma Herrera, Pilar Drake, Bruno Almón, Cesar Vilas, Francisco Baldó. Physiological responses to estuarine stress gradient affect performance and field distribution of the non-native crustacean Synidotea laticauda. Estuarine, Coastal and Shelf Science. 2019; 225 ():106233.
Chicago/Turabian StyleM.Carmen Ruiz-Delgado; Enrique González-Ortegón; Inma Herrera; Pilar Drake; Bruno Almón; Cesar Vilas; Francisco Baldó. 2019. "Physiological responses to estuarine stress gradient affect performance and field distribution of the non-native crustacean Synidotea laticauda." Estuarine, Coastal and Shelf Science 225, no. : 106233.
Phytoplankton community composition expresses estuarine functionality and its assessment can be improved by implementing novel quantitative fatty acid based procedures. Fatty acids have similar potential to pigments for quantifying phytoplankton functional groups but have been far less applied. A recently created dataset containing vast information on fatty acids of phytoplankton taxonomic groups was used as reference to quantify phytoplankton functional groups in the yet undescribed Guadalquivir River Estuary. Twelve phytoplankton groups were quantitatively distinguished by iterative matrix factor analysis of seston fatty acid signatures in this turbid estuary. Those phytoplankton groups including species unfeasible for microscopy identification (coccoid or microflagellated cells) could be quantified when using fatty acids. Conducting monthly matrix factor analyses over a period of two years and the full salinity range of the estuary indicated that diatoms dominated about half of the phytoplankton community spatiotemporally. The abundance of Cyanobacteria and Chlorophytes was inversely related to salinity and little affected by seasonality. Euglenophytes were also more abundant at lower salinity, increasing their presence in autumn-winter. Coccolithophores and Dinophytes contributed more to phytoplankton community at higher salinity and remained little affected by seasonality. Multivariate canonical analysis indicated that the structure of the estuarine phytoplankton community was most influenced by salinity, secondly influenced by water temperature, irradiance and river flow, and unaffected by nutrients. Fatty acids are especially suited for phytoplankton community research in high turbid estuaries and generate outcomes in synergy with those derived from classical pigment assessments.
Jose Pedro Cañavate; Stefanie Van Bergeijk; Enrique Gonzalez-Ortegon; Cesar Vilas. Seston fatty acids to quantify phytoplankton functional groups and their spatiotemporal dynamics in a highly turbid estuary. 2019, 607614 .
AMA StyleJose Pedro Cañavate, Stefanie Van Bergeijk, Enrique Gonzalez-Ortegon, Cesar Vilas. Seston fatty acids to quantify phytoplankton functional groups and their spatiotemporal dynamics in a highly turbid estuary. . 2019; ():607614.
Chicago/Turabian StyleJose Pedro Cañavate; Stefanie Van Bergeijk; Enrique Gonzalez-Ortegon; Cesar Vilas. 2019. "Seston fatty acids to quantify phytoplankton functional groups and their spatiotemporal dynamics in a highly turbid estuary." , no. : 607614.
Metals transported into the coastal zone by the South Iberian rivers are key to understand the biogeochemical cycles and distribution of trace elements in the Gulf of Cadiz (GoC hereinafter) and the exchange with the Mediterranean Sea. Previous studies carried out in the 80s have suggested that metal enrichment in the Alboran Sea (Western Mediterranean) is related with fluvial inputs from acid mine drainage from the Tinto and Odiel rivers. The present study evaluates the contribution of dissolved trace metal concentrations (i.e. Cd, Co, Cu, Fe, Mo, Ni, Pb, V, Zn) from the three main rivers discharging into the GoC (i.e. Guadiana, Tinto-Odiel and Guadalquivir rivers). Our results show that the metal composition of water discharged from each river is impacted by the activities developed in the course of the rivers, which clearly influence the GoC coastal surface waters composition. Metal fluxes from the Guadalquivir river are quantitatively higher than those from the Tinto-Odiel (e.g. up to 73% and 19% higher for Ni and Cu, respectively). Although the metal concentrations spatial distributions in the GoC are dominated by the circulation pattern between the Atlantic and the Mediterranean Sea, the concentrations within the GoC continental shelf could be explained by a greater contribution from the Guadalquivir estuary (e.g. 80.5%, 54.6%, 56.5% and 56.6% for Ni, Cu, Mo, and V respectively).
E. González-Ortegón; I. Laiz; David Sánchez-Quiles; Antonio Cobelo-Garcia; A. Tovar-Sánchez. Trace metal characterization and fluxes from the Guadiana, Tinto-Odiel and Guadalquivir estuaries to the Gulf of Cadiz. Science of The Total Environment 2018, 650, 2454 -2466.
AMA StyleE. González-Ortegón, I. Laiz, David Sánchez-Quiles, Antonio Cobelo-Garcia, A. Tovar-Sánchez. Trace metal characterization and fluxes from the Guadiana, Tinto-Odiel and Guadalquivir estuaries to the Gulf of Cadiz. Science of The Total Environment. 2018; 650 ():2454-2466.
Chicago/Turabian StyleE. González-Ortegón; I. Laiz; David Sánchez-Quiles; Antonio Cobelo-Garcia; A. Tovar-Sánchez. 2018. "Trace metal characterization and fluxes from the Guadiana, Tinto-Odiel and Guadalquivir estuaries to the Gulf of Cadiz." Science of The Total Environment 650, no. : 2454-2466.
Dissolved organic matter (DOM) is a major component of the organic matter pool, playing a key role in the global ocean functioning. However, studies on DOM in waters of many ocean regions, such as the Gulf of Cadiz (GoC), are poorly known. Advanced aquatic sensors enable autonomous for long-term deployments in situ collection of high frequency DOM data using fluorescent dissolved organic matter (FDOM) as a proxy. The present study evaluates the relevance of FDOM, the estuarine influence and the environmental factors that determine its spatial distribution in the GoC. Our results suggest that the GoC water mass, under the estuarine influence of three main rivers, is receiving large amounts of DOM transported mainly by Guadalquivir and Guadiana rivers and much less from Tinto-Odiel. Salinity is the main factor explaining the FDOM variability within the Guadalquivir and Guadiana rivers and in the inner shelf of the GoC. In the outer shelf of the GoC, plankton-produced DOM could explain the persistent spatial pattern of FDOM, playing an important role in the dynamics of FDOM from the North area of the GoC through the persistent low-salinity Eastern North Atlantic Central Water. The oceanographic dynamics and the spatial pattern of FDOM concentration in the continental shelf of the GoC suggest a net transport of FDOM through the GCC (Gulf of Cadiz Current) to the Mediterranean Sea.
E. González-Ortegón; V. Amaral; F. Baldó; Ricardo F. Sánchez-Leal; María J. Bellanco; María P. Jiménez; J. Forja; César Vilas; A. Tovar-Sanchez. Sources and coastal distribution of dissolved organic matter in the Gulf of Cadiz. Science of The Total Environment 2018, 630, 1583 -1595.
AMA StyleE. González-Ortegón, V. Amaral, F. Baldó, Ricardo F. Sánchez-Leal, María J. Bellanco, María P. Jiménez, J. Forja, César Vilas, A. Tovar-Sanchez. Sources and coastal distribution of dissolved organic matter in the Gulf of Cadiz. Science of The Total Environment. 2018; 630 ():1583-1595.
Chicago/Turabian StyleE. González-Ortegón; V. Amaral; F. Baldó; Ricardo F. Sánchez-Leal; María J. Bellanco; María P. Jiménez; J. Forja; César Vilas; A. Tovar-Sanchez. 2018. "Sources and coastal distribution of dissolved organic matter in the Gulf of Cadiz." Science of The Total Environment 630, no. : 1583-1595.
Offspring size variation in relation to maternal size and season is characteristic of a range of species living in seasonal environments. Little is known about the proximate mechanisms explaining the links between maternally driven variation in offspring phenotypes, for instance when mothers have different diets depending on their size or the season. Here, we use stable isotopes techniques to quantify size dependent and seasonal variations in diet in mothers of shrimp Palaemon serratus and explore possible links between maternal diet and phenotype of embryos and freshly hatched larvae. We found that larger females, which occur more frequently in winter, produce larvae with higher carbon and nitrogen content as well as higher percent carbon, than smaller mothers collected in winter. In addition, isotopic composition suggest that larger mothers collected in winter, were feeding at a higher trophic level, or on an enriched prey pool compared with smaller mothers collected in summer. Overall, there seems to be a strong association between offspring size and maternal diet, mediated by maternal size and/or season.
Enrique González-Ortegón; Lewis Le Vay; Mark Edward Mackay Walton; Luis Giménez. Maternal Trophic Status and Offpsring Phenotype in a Marine Invertebrate. Scientific Reports 2018, 8, 1 -8.
AMA StyleEnrique González-Ortegón, Lewis Le Vay, Mark Edward Mackay Walton, Luis Giménez. Maternal Trophic Status and Offpsring Phenotype in a Marine Invertebrate. Scientific Reports. 2018; 8 (1):1-8.
Chicago/Turabian StyleEnrique González-Ortegón; Lewis Le Vay; Mark Edward Mackay Walton; Luis Giménez. 2018. "Maternal Trophic Status and Offpsring Phenotype in a Marine Invertebrate." Scientific Reports 8, no. 1: 1-8.
The Atlantic–Mediterranean transition zone between the Alborán Sea and the Gulf of Cádiz constitutes the most prominent marine geographic barrier in European waters and includes known phylogeographic breaks such as the Strait of Gibraltar and the Almería-Oran Front. A genetic shift in this area has been previously documented for the European littoral shrimp Palaemon elegans. Here we carried out a phylogeographic analysis with the congeneric and sympatric species Palaemon serratus to test for similar intraspecific genetic differentiation and geographic structure. This littoral prawn is distributed in the Northeastern Atlantic Ocean, the Mediterranean Sea and the Black Sea. We compared DNA sequences from the mitochondrial genes Cox1 and to a lesser extent from 16S rRNA of several Atlantic and Mediterranean populations. Furthermore, sequences from the nuclear gene Enolase were included for corroborating differences between Mediterranean and Atlantic individuals. A pronounced genetic differentiation was detected between the Mediterranean and Atlantic populations, amounting to 10.14% in Cox1 and 2.0% in 16S, indicating the occurrence of two independent evolutionary lineages. Interestingly, specimens from the Atlantic Gulf of Cadiz cluster together with the Mediterranean individuals, indicating that a biogeographic barrier appears to be located west of the Strait of Gibraltar.
Ronja Weiss; Zeltia Torrecilla; Enrique González-Ortegón; Ana M. González-Tizón; Andrés Martínez-Lage; Christoph D. Schubart. Genetic differentiation between Mediterranean and Atlantic populations of the common prawn Palaemon serratus (Crustacea: Palaemonidae) reveals uncommon phylogeographic break. Journal of the Marine Biological Association of the United Kingdom 2017, 98, 1425 -1434.
AMA StyleRonja Weiss, Zeltia Torrecilla, Enrique González-Ortegón, Ana M. González-Tizón, Andrés Martínez-Lage, Christoph D. Schubart. Genetic differentiation between Mediterranean and Atlantic populations of the common prawn Palaemon serratus (Crustacea: Palaemonidae) reveals uncommon phylogeographic break. Journal of the Marine Biological Association of the United Kingdom. 2017; 98 (6):1425-1434.
Chicago/Turabian StyleRonja Weiss; Zeltia Torrecilla; Enrique González-Ortegón; Ana M. González-Tizón; Andrés Martínez-Lage; Christoph D. Schubart. 2017. "Genetic differentiation between Mediterranean and Atlantic populations of the common prawn Palaemon serratus (Crustacea: Palaemonidae) reveals uncommon phylogeographic break." Journal of the Marine Biological Association of the United Kingdom 98, no. 6: 1425-1434.
Lethal and sublethal responses of the shrimp Atyaephyra desmarestii exposed to three pharmaceutical compounds, Diclofenac (DF), Ibuprofen (IB) and Carbamazepine (CBZ), individually and in mixtures, were evaluated under two temperature scenarios. LC50 (96 h) values were obtained individually at 20° and 25 °C. At 25 °C, mortality in binary and ternary mixtures is higher than at 20 °C. The toxicity of the mixtures was predicted on the basis of individual mortality data using two toxicity models: Concentration addition (CA) and Independent action (IA). Our results showed that neither CA nor IA unequivocally predicted the observed toxicity of binary and ternary mixtures. For sublethal toxicity, selected endpoints were: ingestion rate, osmoregulatory capacity and respiration rate. Regarding osmoregulatory capacity, no significant differences were found. The highest ingestion rates were recorded in organisms exposed at 25 °C, irrespective of the compound, after 30 and 60 minutes of exposure. At 20° C, there was a significant decrease in respiration rate (Dunnett́s test p < 0.05) under conditions of severe anoxia (1 mg O2·L−1) in organisms exposed to 13.3 μg L−1 of DF. At 25 °C a significantly lower respiration rate with respect to the control (Dunnett́s test p < 0.05) was found in organisms exposed to 13.8 μg L−1 of CBZ under conditions of moderate hypoxia and well-oxygenated water (3 and 5 mg O2·L−1, respectively). The respiratory independence of organisms exposed to the higher temperature (25 °C) also decreased. This study shows that CBZ and DF individually, even at relatively low concentrations, may produce respiratory deficiencies in the freshwater shrimp, Atyaephyra desmarestii under certain temperature and water oxygenation conditions, thus reducing its ability to function.
Elena Nieto; Miriam Hampel; Enrique González-Ortegón; Pilar Drake; Julian Blasco. Influence of temperature on toxicity of single pharmaceuticals and mixtures, in the crustacean A. desmarestii. Journal of Hazardous Materials 2016, 313, 159 -169.
AMA StyleElena Nieto, Miriam Hampel, Enrique González-Ortegón, Pilar Drake, Julian Blasco. Influence of temperature on toxicity of single pharmaceuticals and mixtures, in the crustacean A. desmarestii. Journal of Hazardous Materials. 2016; 313 ():159-169.
Chicago/Turabian StyleElena Nieto; Miriam Hampel; Enrique González-Ortegón; Pilar Drake; Julian Blasco. 2016. "Influence of temperature on toxicity of single pharmaceuticals and mixtures, in the crustacean A. desmarestii." Journal of Hazardous Materials 313, no. : 159-169.
International audienceWe assessed the role of eutyhalinity and life-history traits on the population genetic structure of the four main caridean shrimp species from the Iberian Peninsula (Atyaephyra desmarestii, Dugastella valentina, Palaemon varians and Palaemon zariquieyi) able to complete their life cycle in freshwater/oligohaline habitats. Seawater exposure experiments indicated thatA. desmarestii, D. valentina and P. zariquieyi are more sensitive to high salinity waters than P. varians and confirm the relationship between osmolality regulation and spatial distribution of species. The limited or no survival in seawater could explain the restricted distributions observed in D. valentina and P. zariquieyi, whereas the currentA. desmarestii distribution could be due to either past river dynamics and/or human-mediated water transfers. Conversely, the high tolerance of P. varians to a large salinity range (euryhalinity) could explain its capacity to colonize geographically distant estuaries. In agreement with osmoregulation results, the phylogeography patterns of the cytochrome oxidase 1 (Cox 1) gene fragment revealed significant genetic differentiation among river systems whatever the species considered. Atyidae species presented higher nucleotide diversity levels than Palaemonidae species, while isolation-by-distance patterns were only found for the latter. Our results have important implications for the management and conservation of freshwater species, since the inter-catchment connectivity may affect the speciation processes. (C) 2015 Elsevier B.V. All rights reserved
Enrique González-Ortegón; Ferran Palero; Christophe Lejeusne; Pilar Drake; Jose A. Cuesta. A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers. Science of The Total Environment 2016, 540, 11 -19.
AMA StyleEnrique González-Ortegón, Ferran Palero, Christophe Lejeusne, Pilar Drake, Jose A. Cuesta. A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers. Science of The Total Environment. 2016; 540 ():11-19.
Chicago/Turabian StyleEnrique González-Ortegón; Ferran Palero; Christophe Lejeusne; Pilar Drake; Jose A. Cuesta. 2016. "A salt bath will keep you going? Euryhalinity tests and genetic structure of caridean shrimps from Iberian rivers." Science of The Total Environment 540, no. : 11-19.
Few ecotoxicological studies incorporate within the experimental design environmental variability and mixture effects when assessing the impact of pollutants on organisms. We have studied the combined effects of selected pharmaceutical compounds and environmental variability in terms of salinity and temperature on survival, development and body mass of larvae of the estuarine shrimp Palaemon longirostris. Drug residues found in coastal waters occur as mixture, and the evaluation of combined effects of simultaneously occurring compounds is indispensable for their environmental risk assessment. All larval stages of P. longirostris were exposed to the nonsteroidal anti-inflammatory drug (NSAID) diclofenac sodium (DS: 40 and 750 μg L(-1)), the lipid regulator clofibric acid (CA: 17 and 361 μg L(-1)) and the fungicide clotrimazole (CLZ: 0.14 and 4 μg L(-1)). We observed no effect on larval survival of P. longirostris with the tested pharmaceuticals. However, and in contrast to previous studies on larvae of the related marine species Palaemon serratus, CA affected development through an increase in intermoult duration and reduced growth without affecting larval body mass. These developmental effects in P. longirostris larvae were similar to those observed in the mixture of DS and CA confirming the toxic effects of CA. In the case of CLZ, its effects were similar to those observed previously in P. serratus: high doses affected development altering intermoult duration, tended to reduce the number of larval instars and decreased significantly the growth rate. This study suggests that an inter-specific life histories approach should be taken into account to assess the effect of emergent compounds in coastal waters.
Enrique González-Ortegón; Julian Blasco; Elena Nieto; Miriam Hampel; Lewis Le Vay; Luis Giménez. Individual and mixture effects of selected pharmaceuticals on larval development of the estuarine shrimp Palaemon longirostris. Science of The Total Environment 2016, 540, 260 -266.
AMA StyleEnrique González-Ortegón, Julian Blasco, Elena Nieto, Miriam Hampel, Lewis Le Vay, Luis Giménez. Individual and mixture effects of selected pharmaceuticals on larval development of the estuarine shrimp Palaemon longirostris. Science of The Total Environment. 2016; 540 ():260-266.
Chicago/Turabian StyleEnrique González-Ortegón; Julian Blasco; Elena Nieto; Miriam Hampel; Lewis Le Vay; Luis Giménez. 2016. "Individual and mixture effects of selected pharmaceuticals on larval development of the estuarine shrimp Palaemon longirostris." Science of The Total Environment 540, no. : 260-266.
The lack of space and opportunity for development has been identified as key reasons behind the stagnation of the European aquaculture industry. With the historical loss and degradation of current European wetlands there is an opportunity for harnessing the commercial investment of the aquaculture industry in construction of dual purpose wetlands that incorporate both conservation and extensive aquaculture activities. These wetlands can be used to expand the area available to suitable aquaculture into ecologically sensitive areas, such as Natura 2000 sites. Veta la Palma (VLP) situated in the Doñana Natural Park (and a Natura 2000 site) is an example of such an aquaculture development and a possible model for future opportunities. In the current study some of the important ecosystem services that are provided by VLP are assessed. The provisioning services of VLP were the economic rationale for the investment and more than 820 tonnes yr− 1 of fish and shrimp is produced, through a mixture of semi-extensive and extensive aquaculture. The regulating services include nutrient absorption, and the flow of river water through VLP and high primary production results in the absorption of 377 tonnes of dissolved inorganic nitrogen yr− 1, and 516 tonnes of C yr− 1. Supporting services include the provision of habitat for more than 94 bird and 21 fish species. The primary production that supports the birds, extensive and semi-extensive aquaculture production was also estimated to be 167,000 tonnes, 50,000 tonnes and 133,000 tonnes yr− 1, respectively. The losses to birds are substantial and these estimates indicate that almost half of the primary production supports the wetland birds which directly consume 249 tonnes of fish and 2578 tonnes of invertebrates per annum. However it is the ecological credentials of the farm that enable premium prices and hence ensure the economic viability of the farm. The study demonstrates the possibility of using aquaculture to mitigate the historical loss of wetlands, provide significant ecosystem services and contribute to achievement of the European environmental legislative goals, and furthers the opportunity for the expansion of aquaculture into sensitive but impacted habitats. Demonstrates potential environmental benefits of aquaculture.
M.E.M. Walton; C. Vilas; José Pedro Cañavate; Enrique González-Ortegón; A. Prieto; S.A. Van Bergeijk; A.J. Green; M. Librero; N. Mazuelos; L. Le Vay. A model for the future: Ecosystem services provided by the aquaculture activities of Veta la Palma, Southern Spain. Aquaculture 2015, 448, 382 -390.
AMA StyleM.E.M. Walton, C. Vilas, José Pedro Cañavate, Enrique González-Ortegón, A. Prieto, S.A. Van Bergeijk, A.J. Green, M. Librero, N. Mazuelos, L. Le Vay. A model for the future: Ecosystem services provided by the aquaculture activities of Veta la Palma, Southern Spain. Aquaculture. 2015; 448 ():382-390.
Chicago/Turabian StyleM.E.M. Walton; C. Vilas; José Pedro Cañavate; Enrique González-Ortegón; A. Prieto; S.A. Van Bergeijk; A.J. Green; M. Librero; N. Mazuelos; L. Le Vay. 2015. "A model for the future: Ecosystem services provided by the aquaculture activities of Veta la Palma, Southern Spain." Aquaculture 448, no. : 382-390.