Imposex and organotin contamination in <i>Nassarius reticulatus</i> (L.) along the Portuguese coast

Silva, Ana Catarina; Mendo, Sónia; Barroso, Carlos M.

doi:10.1002/aoc.856

Cited by 44 publications

(25 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This dilution effect, more evident in winter when the atmospheric conditions are rougher than in summer, may explain the relatively low levels of EDCs in this area. This theory is in accordance with the vast diversity of fauna and flora found in this area, but do not discard the disrupting effect registered in several species (Pessoa et al 2001;Sousa et al 2005;Moreira et al 2006) and the continuous decline of emblematic species, like the dolphin, T. truncatus, which can result from the synergy of all EDCs present in this zone together with other stressors.…”

Section: Resultssupporting

confidence: 73%

“…5). Since it is well established that these estrogens are able to produce disrupting effects in wildlife, even in very low nanograms per liter concentrations (Mills and Chichester 2005), it is possible that E1 and EE2, in conjunction, may additively contribute to reproductive disturbances, which include the induction of intersex in aquatic species of this estuary (Pessoa et al 2001;Sousa et al 2005;Moreira et al 2006). Concerning E2, the lack of detection of this estrogen in Sado estuary is in accordance with our previous studies in Douro and Mondego Rivers (Ribeiro et al 2008a, b).…”

Section: Resultsmentioning

confidence: 99%

“…It is known that the above EDCs can exhibit, even in a few nanograms per liter, additive or synergic toxic effects and further strongly suspected to be responsible for the appearance of ovotestis in aquatic animals (Vethaak et al 2005). Since such a condition was reported in this estuary for the segment worm (Hediste diversicolor, Polychaete) and the snail (Hinia reticulata, Gastropoda) (Pessoa et al 2001;Sousa et al 2005;Moreira et al 2006), the main objectives of this study were to (1) identify and quantify the above referred EDCs in this area, (2) report possible differences among the patterns of pollution between the industrial area and the natural reserve zone, and (3) verify if any of the studied compounds exist in hazardous amounts. Moreover, this study is part of a comparative screening we are making in main Portuguese estuaries, which already proved the presence of EDCs in the estuaries of Douro and Mondego (Ribeiro et al 2008a, b).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatial distribution and quantification of endocrine-disrupting chemicals in Sado River estuary, Portugal

Ribeiro

Pardal

Tiritan

et al. 2008

Environ Monit Assess

View full text Add to dashboard Cite

The important Portuguese Sado River estuary has never been investigated for the presence of potentially endocrine-disrupting chemicals (EDCs), such as natural estrogens (estradiol, estrone), pharmaceutical estrogens (17alpha-ethynylestradiol), phytoestrogens (daidzein, genistein and biochanin A), or industrial chemicals (4-octylphenol, 4-nonylphenol, and bisphenol A). Thus, the main objective of this study was to evaluate their presence at 13 sampling points distributed between both the industrial and the natural reserve areas of the estuary, zones 1 and 2, respectively. For that, water samples collected in summer and winter were processed by solid phase extraction and analyzed by high-performance liquid chromatography with photodiode array detection and gas chromatography-mass spectroscopy. Results showed that estrone, ethynylestradiol, all the aforementioned phytoestrogens as well as bisphenol A and 4-octylphenol were found in zone 1. In zone 2, neither estrogens nor 4-OP were found. However, in the same zone, daidzein (500 ng/L) and genistein (320 ng/L) attained their highest levels in summer, whereas biochanin A peaked in winter (170 ng/L). Furthermore, bisphenol A was also found in some areas of zone 2, but showed similar concentrations in both surveys (about 220 ng/L). This study demonstrated that the Sado River estuary had low EDCs levels, suggesting that the Sado's high hydrodynamic activity may be involved in the dilution of local pollution. It was suggested that at the current levels of concentrations, all assayed EDCs are unlikely to individually cause endocrine disruption in local animals. However, under a continuous exposure scenario, an additive and/or synergistic action of the estrogenic chemicals load can not be excluded, and so, continuous monitoring is advisable.

show abstract

Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial distribution and quantification of endocrine-disrupting chemicals in Sado River estuary, Portugal

Ribeiro

Pardal

Tiritan

et al. 2008

Environ Monit Assess

View full text Add to dashboard Cite

show abstract

“…Similar results have been observed worldwide: on the northeastern Brazilian coast, in relation to S. rustica (Castro et al, 2007(Castro et al, , 2008, in the Mediterranean, in relation to Hexaplex trunculus (L.) (Axiak et al, 1995), and in several harbors in Europe and in Halifax harbor, Canada, in relation to Nucella lapillus (L.) (Sousa et al, 2009). Other studies have also confirmed that areas near harbors and marinas are hotspots for TBT pollution (Barroso et al, 2002;Sousa et al, 2005).…”

Section: Imposex In Stramonita Rustica On Southern Bahia Coastmentioning

confidence: 79%

Assessment of tributyltin contamination based on imposex in Stramonita rustica (Mollusca: Gastropoda) along southern Bahia coast, northeastern Brazil

Zeidan

Boehs

2017

Braz. J. Biol.

View full text Add to dashboard Cite

This study investigated the effects of tributyltin (TBT) on the morphology of the genital system of the gastropod Stramonita rustica in southern Bahia, Brazil. For this, 330 specimens were collected during the summer of 2014 at eight sampling points to ascertain whether male sex organs had developed in addition to the complete female genital tract in females (= imposex). The analyses were made under a stereoscopic microscope. Imposex and their associated indexes, and the sterile females, exhibited the highest rates in harbors and shipyards areas. Despite the total ban of TBT in anti-fouling paints on a global scale since 2003, the results of this and other studies indicate the continued use of those paints on the Brazilian coast. This shows the inefficiency of existing legislation and the need to strengthen enforcement of the ban.Keywords: antifouling, sterilization, harbors, TBT. Avaliação da contaminação por tributil-estanho baseada em imposex em Stramonita rustica (Mollusca: Gastropoda) ao longo do Litoral Sul da Bahia ResumoEste estudo investigou os efeitos de tributil-estanho (TBT) sobre a morfologia do sistema genital do gastrópode Stramonita rustica (Lamarck, 1822) no Litoral Sul da Bahia, Brasil. Para isso, 330 espécimens foram coletados durante o verão de 2014 em oito pontos de amostragem, para verificar se os órgãos sexuais masculinos tinham se desenvolvido para além do trato genital feminino completo (= imposex). As análises foram feitas sob um microscópio estereoscópico. O imposex e seus índices associados, assim como as fêmeas estéreis, apresentaram as maiores taxas em áreas portuárias e estaleiros. Apesar da proibição total do TBT em tintas anti-incrustantes em escala global desde 2003, os resultados deste e de outros estudos indicam a continuidade de uso dessas tintas na costa brasileira. Isso mostra a ineficácia da legislação vigente e reforça a necessidade de se cumprir integralmente o banimento.Palavras-chave: antifouling, esterilização, portos, TBT.

show abstract

“…The reaction (response) time of tissue concentration is shorter, half-life of TBT in mollusc tissue has been reported to be 22 days in T. clavigera (Horiguchi et al, 1995), 11-36 days in the clam, Venerupis decussata (Gomez-Ariza et al, 1999), 26 days in the bivalve Dreissena polymorpha (Van Slooten and Tarradellas, 1994), and about 2-3 months in the gastropod Nassarius reticulates (Sousa et al, 2005). An OT injection experiment showed that tissue TBT concentration of T. clavigera declined from 221.6 and 900.8 ng g À1 wet weight in day 2 of injection to 20.3 and 116.6 ng g À1 wet weight in 30 days, respectively (Horiguchi et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Ecological risk assessments of endocrine disrupting organotin compounds using marine neogastropods in Hong Kong

Leung

Kwong

et al. 2006

Chemosphere

View full text Add to dashboard Cite

As active ingredients of anti-fouling paints that are widely used on ship hulls, organotin compounds, in particular tributyltin (TBT), are well-known endocrine disruptors causing sex changes in marine organisms and widespread in coastal waters and sediments worldwide. In this study, a comprehensive ecological risk assessment (ERA) of organotins was conducted in Hong Kong waters through determining the imposex status, sex ratio and tissue burdens of these compounds in the neogastropods, Thais clavigera and Thais luteostoma collected from 29 coastal sites. We also investigated the historical trend of organotin effects on these gastropods, and performed a probabilistic ERA based on tissue burden of TBT in the animals. Our results demonstrated that imposex indices were positively correlated with the body burden of organotins in the gastropods. Across all sites, the sex ratio (female:male) decreased significantly with increasing imposex levels or tissue burden of organotins, implying that such pollutants can result in a male-biased population, potentially leading to local extinction in extreme cases. Based on the ERA, 5.4% of all populations of T. clavigera are at risk due to exposure to TBT; the risks include growth inhibition, impairment of immune functions and reduced fitness. Seriously impacted areas included Aberdeen, Repulse Bay, Butterfly Beach, Mui Wo and Ha Mei Wan. A comparison with historical data revealed that there had been some improvement in the areas with low marine traffic, and distant from the major harbour/port. This could partly be due to the restriction on the use of TBT on small vessels (<25 m in length) since 1992. Nevertheless, the organotin contamination still remains severe in areas with high marine traffic or adjacent to large harbours/ports. In particular, the situation in the northeastern waters of Hong Kong has been getting worst since 1996 that is probably associated with the rapid development of the cargo container port at Yantian in China.

show abstract

Imposex and organotin contamination in Nassarius reticulatus (L.) along the Portuguese coast

Cited by 44 publications

References 26 publications

Spatial distribution and quantification of endocrine-disrupting chemicals in Sado River estuary, Portugal

Spatial distribution and quantification of endocrine-disrupting chemicals in Sado River estuary, Portugal

Assessment of tributyltin contamination based on imposex in Stramonita rustica (Mollusca: Gastropoda) along southern Bahia coast, northeastern Brazil

Ecological risk assessments of endocrine disrupting organotin compounds using marine neogastropods in Hong Kong

Contact Info

Product

Resources

About