Transportation of pesticides in estuaries of Louros and Arachthos rivers (Amvrakikos Gulf, N. W. Greece)

Albanis, T. A.; Danis, Theocharis G.; Hela, Dimitra

doi:10.1016/0048-9697(95)04667-5

Cited by 53 publications

(41 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the apparently high level of geographic isolation of bottlenose dolphins living in the Amvrakikos Gulf and the ongoing degradation of the Gulf's ecosystems raise concerns about their vulnerability. Water quality in the Amvrakikos Gulf has worsened owing to pollutants carried by the rivers Louros and Arachthos and waste waters from coastal cities and industrial/agricultural processes in the broader area (Albanis et al, 1995;Kotti et al, 2005). Hydroelectric power dams upstream of the rivers, use of the rivers' fresh water for agriculture irrigation and industry, and port construction that narrowed the width of the Preveza channel appear to have contributed to altering the Gulf's natural hydrology and hydrodynamics.…”

Section: Discussionmentioning

confidence: 96%

Dolphins in a bottle: abundance, residency patterns and conservation of bottlenose dolphins Tursiops truncatus in the semi‐closed eutrophic Amvrakikos Gulf, Greece

Bearzi

Agazzi

Bonizzoni

et al. 2007

Aquatic Conservation

View full text Add to dashboard Cite

. This relatively high density, together with high levels of site fidelity shown by most individuals, was thought to be related primarily to prey availability, particularly of epipelagic schooling fish.5. The importance of the semi-closed Amvrakikos Gulf for bottlenose dolphins and other threatened species encourages the adoption of measures aimed to conserve its valuable ecosystems and raise the naturalistic profile of the area, while promoting environment-conscious development. Meaningful action includes restoring natural hydrology (e.g. freshwater input from rivers), curtailing pollution from various sources, responsible fisheries and aquaculture management, and control of illegal fishing. Interactions between dolphins and fisheries also deserve careful quantitative investigation.

show abstract

Section: Discussionmentioning

confidence: 96%

Dolphins in a bottle: abundance, residency patterns and conservation of bottlenose dolphins Tursiops truncatus in the semi‐closed eutrophic Amvrakikos Gulf, Greece

Bearzi

Agazzi

Bonizzoni

et al. 2007

Aquatic Conservation

View full text Add to dashboard Cite

show abstract

“…In the last 20 years, the presence of these substances in surface waters has been reported in Greece. For example, atrazine and simazine were among the substances that were detected more often in the basin of Lake Pamvotida (Albanis et al 1986;Hela et al 2005), in the agricultural region of Thessaloniki (Rivers Gallikos, Axios, Loudias and Aliakmonas) (Albanis 1992;Albanis et al 1994;Papadopoulou-Mourkidou et al 2004), in the river Eurotas (Angelidis et al 1996) and in the rivers Louros and Arachthos in the central Greece (Albanis et al 1995).…”

Section: Introductionmentioning

confidence: 97%

Effects of atrazine on the viability and the formation of byssus of the mussel Mytilus galloprovincialis

2010

View full text Add to dashboard Cite

Shellfish farming often takes place in areas subjected to various recurring pollutions. The intensive use of herbicides in agriculture leads to the presence of residues in the aquatic ecosystems. In the present study, the effects of atrazine on the viability of the mussel Mytilus galloprovincialis and the formation of their byssus were studied. A total of 720 mussels (mean length 24 mm ± 2.1 SD) were divided into six groups. The mussels from the first five groups were exposed to five concentrations of atrazine, 10, 8, 5, 2 and 1 ppm, while one group was used as control. The LC 50 was calculated after 48 h, while the long-term effect of atrazine on the viability and byssus formation of the mussels were studied for 21 days. The LC 50 was found to be 6.33 ppm. From all the concentrations of atrazine to which the mussels were exposed, only in two of them (2 and 1 ppm) some mussels survived up to the last day of the experiment. The survival rate in the control group was significantly higher than those of mussels that were exposed to atrazine. Regarding the byssus formation, the number of byssal threads was significant lower in the mussels that were exposed to 2 and 1 ppm atrazine compared to the control group, while no byssal threads were formed by the mussels exposed to 10, 8 and 5 ppm. All the mussels that survived on day 21 were then exposed to air. The LT 50 for the control group and the mussels which had been exposed to 1 and 2 ppm atrazine were 5.14, 2.77 and 1.98 days, respectively. The results of the present study indicate that atrazine has a significant effect on the viability of mussels both in the water and in air and on their ability to form byssus.

show abstract

“…A complex system of lagoons and an extensive delta originating from the rivers Louros and Arachthos are located in its northern part (Guelorget et al 1986). The lagoons are far from any point sources of pollution but Louros and Arachthos rivers run through an important agricultural area of Northwestern Greece and release contaminants related to agricultural practices in the Amvrakikos Gulf via riverine transport (Albanis et al 1995;Albanis and Hela 1998). Chemical analysis of contaminants in water, sediment, and biota imply moderate pesticide contamination (Readman et al 1993;Albanis et al 1995;Hatzianestis et al 2001) but monitoring is not performed on a regular basis in the area.…”

Section: Introductionmentioning

confidence: 97%

Assessment of contaminant impacts in a semi-enclosed estuary (Amvrakikos Gulf, NW Greece): Bioenergetics and biochemical biomarkers in mussels

Tsangaris

Cotou

Papathanassiou

et al. 2009

Environ Monit Assess

View full text Add to dashboard Cite

A combination of bioenergetics and biochemical biomarkers in mussels was applied to assess possible pollution impacts in a protected semi-enclosed estuary (Amvrakikos Gulf, NW Greece) that receives pesticide discharges through riverine transport. Scope for growth, a physiological condition index representing the energy budget of the organism, was applied to detect general stress effects on the health status of mussels. The low energy budgets of mussels revealed stress conditions and provided early warning signals of possible consequences at higher levels of biological organization. Biochemical markers of exposure confirmed a risk of pesticide contamination. Decreased acetylcholinesterase activities indicated exposure to organophosphate and carbamate pesticides. Responses of the antioxidant enzyme glutathione peroxidase suggested the presence of contaminants capable of reactive oxygen species production that could be related to organochlorine pesticide contamination in the area. On the other hand, metallothionein levels implied low metal contamination.

show abstract

Transportation of pesticides in estuaries of Louros and Arachthos rivers (Amvrakikos Gulf, N. W. Greece)

Cited by 53 publications

References 10 publications

Dolphins in a bottle: abundance, residency patterns and conservation of bottlenose dolphins Tursiops truncatus in the semi‐closed eutrophic Amvrakikos Gulf, Greece

Dolphins in a bottle: abundance, residency patterns and conservation of bottlenose dolphins Tursiops truncatus in the semi‐closed eutrophic Amvrakikos Gulf, Greece

Effects of atrazine on the viability and the formation of byssus of the mussel Mytilus galloprovincialis

Assessment of contaminant impacts in a semi-enclosed estuary (Amvrakikos Gulf, NW Greece): Bioenergetics and biochemical biomarkers in mussels

Contact Info

Product

Resources

About