Metal levels and accumulation patterns of sea lamprey ammocoetes (<i>Petromyzon marinus</i>Linnaeus, 1758) from a tidal freshwater habitat

Araújo, Mário Jorge; Reis, Pedro A.; Braga, Ana Catarina; Antunes, Carlos

doi:10.1051/limn/2013044

Cited by 5 publications

(4 citation statements)

References 28 publications

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“…20 Minho River is a relatively undisturbed river also shared by Portugal and Spain, 20,21 and has been used as a reference site (namely its terminal area, Seixas) in various ecotoxicological studies. [22][23][24][25] The specic site in the Minho River estuary here-adopted (Seixas) is characterized by low anthropogenic contaminants, especially of metallic nature. 26 The presence of contaminants is limited to those related to shipping traffic.…”

Section: Study Sitesmentioning

confidence: 99%

Pollution effects on biochemical pathways determined in the polychaete Hediste diversicolor collected in three Portuguese estuaries

Nunes

Vidal

Barbosa

et al. 2016

Environ. Sci.: Processes Impacts

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Biomonitoring is an important tool for the assessment of the quality and functions of ecosystems, providing information about the pollutants present and the direct effects that they exert on organisms. Biomonitoring relies upon the quantification of variables that can be biochemical, genetic, morphological and physiological changes. Such variables are designated as biomarkers, and multiple biomarkers are usually determined simultaneously in order to have a more integrated analysis and information about sublethal early effects of contaminants. In this work, we quantified biomarkers, associated with oxidative stress (glutathione-S-transferases GSTs, and catalase CAT, activities; levels of peroxidative alterations, by the thiobarbituric acid reactive substances assay, TBARS) and neurotoxicity (acetylcholinesterase activity, AChE) in the polychaete Hediste diversicolor. Organisms were collected at three distinct estuaries, Ria de Aveiro (Laranjo and São Jacinto), Douro River (São Paio, Afurada, and Ribeira da Granja), both impacted by human activities, and Minho River (Seixas), which has been used as a reference site. Obtained data showed the occurrence of anti-oxidant responses, in most samples from contaminated sites, which was not followed however by the occurrence of oxidative damage in organisms from Ria de Aveiro. None of the analyzed organisms had significant impairment of cholinesterasic activity, suggesting the absence of a prior exposure to neurotoxic compounds. In fact, organisms collected at Ria de Aveiro had largely increased AChE activity, suggesting an uncommon paradoxical biological response that is further discussed.

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Section: Study Sitesmentioning

confidence: 99%

Pollution effects on biochemical pathways determined in the polychaete Hediste diversicolor collected in three Portuguese estuaries

Nunes

Vidal

Barbosa

et al. 2016

Environ. Sci.: Processes Impacts

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“…Ammocoetes spend around 4-5 years in the substrate of rivers and streams before undergoing a period of metamorphosis with marked behavioral, morphological and physiological changes that ends with the start of the juvenile (i.e., macrophthalmia) trophic migration [3]. Once metamorphosis is complete, juvenile downstream migrants are tolerant to full-strength seawater [4][5][6][7][8][9][10][11]. In the marine environment, sea lampreys adopt a parasitic strategy, feeding primarily on the blood of its hosts for a period of approximately 1.5 years [6].…”

Section: Introductionmentioning

confidence: 99%

“…In the marine environment, sea lampreys adopt a parasitic strategy, feeding primarily on the blood of its hosts for a period of approximately 1.5 years [6]. After that period, the adults return to freshwater and migrate upstream, spawn and die [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Dams that block the access of adults to the spawning habitats, overfishing, poaching and the pollution Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/1/15 6:07 PM resulting from industrial effluent and agricultural industry, are frequently pointed out as the main reasons for the decrease of European sea lamprey populations [17,18,[20][21][22]. In Portugal, sea lamprey is considered "vulnerable" by the Portuguese Red List of Threatened Vertebrate Species, a status that demonstrates the importance of preserving this population [4,5,10,12,23,24]. Xenobiotics like herbicides can block the respiratory chain, and increase lipid peroxidation which could modify the gill cells or hepatocytes membrane structure and composition [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Can mitochondrial malondialdehyde content be a useful tool to evaluate sea lamprey juveniles’ capacity to seawater acclimatization?

Candeias

Alves-Pereira²,

Lança³

et al. 2015

Green Processing and Synthesis

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The sea lamprey is an anadromous species that migrates twice during its life cycle between freshwater and seawater.Microphagous larvae generally spend 4-5 years burrowed in the substrate of rivers and streams before undergoing metamorphosis that ends with the beginning of the juvenile trophic migration. Once metamorphosis is complete, sea lamprey juvenile downstream migrants are fully tolerant to seawater salinity. Pollution resulting from industrial effluents may disturb the seawater acclimatization causing oxidative damage, and ultimately may lead to a decrease of sea lamprey population. The aim of this study was to compare salt acclimation of sea lamprey juveniles captured in river basins with different levels of aquatic pollution, using mitochondrial glutathione (GSH) and malondialdehyde (MDA) of gills and liver as markers of physiological stress and cell damage. The results showed that juveniles from the Lima basin exhibited the highest levels of mitochondrial MDA in gills, even though significant changes in the stress markers of mitochondrial gills of all animals subject to salt acclimation were not detected. In addition, an increase in the oxidative damage of hepatic mitochondria of macrophthalmia from the Vouga basin suggests the occurrence of metabolic failures with the potential to disturb the capacity to adaptation to the marine environment.

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The decline of the ecosystem services generated by anadromous fish in the Iberian Peninsula

et al. 2023

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This work aims to present an historical review of the ecosystem services provided by anadromous fish (i.e., species that migrate from the sea to the river to spawn) throughout Human time, as well as of the main related threats, focusing on the Iberian Peninsula region. Anadromous fish provide important provision, cultural, regulatory and supporting ecosystem services across their distribution range and have been extensively exploited by humans since prehistoric times. In the Iberian Peninsula, sea lamprey, allis and twaite shads, sea trout, Atlantic salmon and European sturgeon were once abundantly present in several river basins covering what is now Portuguese and Spanish territory. These species have suffered a severe decline across their distribution range, mainly due to habitat loss and overexploitation. Considered regal delicacies, these fishes were once a statement on the tables of the highest social classes, a much appreciated bounty for the poorer population and are still an important part of the local gastronomy and economy. Such high economic and cultural interest encouraged intensive fishing. Currently, management efforts are being implemented, pairing habitat rehabilitation (e.g., construction of fish passes in obstacles to migration such as weirs and dams) with sustainable fisheries. Considering the present climate change scenario, these species are bound to endure increased pressures, demanding novel management approaches to ensure population numbers that are able to secure their sustainable exploitation.

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Metal levels and accumulation patterns of sea lamprey ammocoetes (Petromyzon marinusLinnaeus, 1758) from a tidal freshwater habitat

Cited by 5 publications

References 28 publications

Pollution effects on biochemical pathways determined in the polychaete Hediste diversicolor collected in three Portuguese estuaries

Pollution effects on biochemical pathways determined in the polychaete Hediste diversicolor collected in three Portuguese estuaries

Can mitochondrial malondialdehyde content be a useful tool to evaluate sea lamprey juveniles’ capacity to seawater acclimatization?

The decline of the ecosystem services generated by anadromous fish in the Iberian Peninsula

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