Small cetaceans found stranded or accidentally captured in southeastern Brazil: Bioindicators of essential and non-essential trace elements in the environment

Lemos, Leila S.; Moura, Jailson Fulgêncio de; Hauser‐Davis, Rachel Ann; Campos, Reinaldo Calixto de; Siciliano, Salvatore

doi:10.1016/j.ecoenv.2013.07.025

Cited by 48 publications

(36 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This correlation in marine mammal liver tissue was first reported by Koeman et al (1973), and has since been observed in virtually every marine mammal liver trace element study. The Hg/Se correlation has been previously observed by Roditi-Elasar et al (2003) in Mediterranean bottlenose dolphins, Lemos et al (2013) in seven cetacean species on the coast of Brazil, Agusa et al (2008) in striped dolphins on the coasts of Japan, and Mackey et al (1995) in pilot whales ( Globicephala melas ), harbor porpoises ( Phocoena phocoena ), and white-sided dolphins ( Lagenorhynchus acutus ) sampled from Atlantic coasts of the United States. Mercury and Se interact on a molecular level with a strong affinity to produce toxicologically inert mercury-selenide crystals (HgSe) that are stored primarily in liver tissue (Bard 1999; Das et al 2003b; Lailson-Brito et al 2012; Nigro and Leonzio 1996; Yang et al 2007).…”

Section: Resultsmentioning

confidence: 55%

“…The negative correlation between Cu and Cd could be indicative of a competitive protein binding interaction as the same metallothionein isoform involved in Cu regulation and homeostasis is responsible for Cd sequestration (Caurant et al 1994; Roditi-Elasar et al 2003). Copper and Zn may co-vary because they both have similar homeostatic regulatory mechanisms (Caurant et al 1994; Lemos et al 2013; Roditi-Elasar et al 2003), and opposing age-related accumulation patterns could also account for each of these negative trace element correlations.…”

Section: Resultsmentioning

confidence: 99%

“… < DL=Below the detection limit a Measurements converted from dry mass to wet mass assuming 70% moisture (Yang and Miyazaki 2003), indicated in the list of references. 1 Law et al (1997a), 2 Law et al (2001), 3 Augier et al (1998)a, 4 Bellante et al (2009)a, 5 Bellante et al (2012)a, 6 Frodello et al (2000)a, 7 Frodello and Marchand (2001)a, 8 Frodello et al (2002a)a, 9 Leonzio et al (1992), 10 Roditi-Elasar et al (2003), 11 Shoham-Frider et al (2009), 12 Storelli and Marcotrigiano (2002), 13 Viale (1994), 14 Beck et al (1997), 15 Dorneles et al (2008), 16 Geraci (1989), 17 Holsbeek et al (1998)a, 18 Law et al (1992), 19 Lemos et al (2013), 20 Meador et al (1999)a, 21 Wood and Van Vleet (1996)a, 22 Hai Le et al (1999)a, 23 Parsons and Chan (2001)a, 24 Kemper et al (1994), 25 Lavery et al (2008)a, 26 Law et al (2003), 27 Lee and Mok (1995), 28 Frodello et al (2002b)…”

Section: Figmentioning

confidence: 99%

See 2 more Smart Citations

Trace Element Concentrations in Liver of 16 Species of Cetaceans Stranded on Pacific Islands from 1997 through 2013

Hansen

Bryan

West

et al. 2015

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

The impacts of anthropogenic contaminants on marine ecosystems are a concern worldwide. Anthropogenic activities can enrich trace elements in marine biota to concentrations that may negatively impact organism health. Exposure to elevated concentrations of trace elements is considered a contributing factor in marine mammal population declines. Hawai'i is an increasingly important geographic location for global monitoring, yet trace element concentrations have not been quantified in Hawaiian cetaceans, and there is little trace element data for Pacific cetaceans. This study measured trace elements (Cr, Mn, Cu, Zn, As, Se, Sr, Cd, Sn, Hg, and Pb) in liver of 16 species of cetaceans that stranded on U.S. Pacific Islands from 1997–2013, using high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) (n = 31), and direct mercury analysis atomic absorption spectrometry (DMA-AAS) (n = 43). Concentration ranges (µg/g wet mass fraction) for non-essential trace elements such as Cd (0.0031–58.93) and Hg (0.0062–1571.75) were much greater than essential trace elements such as Mn (0.590–17.31) and Zn (14.72–245.38). Differences were found among age classes in Cu, Zn, Hg, and Se concentrations. The highest concentrations of Se, Cd, Sn, Hg, and Pb were found in one adult female false killer whale (Pseudorca crassidens) at concentrations that are known to affect health in marine mammals. The results of this study establish initial trace element concentration ranges for Pacific cetaceans in the Hawaiian Islands region, provide insights into contaminant exposure of these marine mammals, and contribute to a greater understanding of anthropogenic impacts in the Pacific Ocean.

show abstract

Section: Resultsmentioning

confidence: 55%

Section: Resultsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

See 1 more Smart Citation

Trace Element Concentrations in Liver of 16 Species of Cetaceans Stranded on Pacific Islands from 1997 through 2013

Hansen

Bryan

West

et al. 2015

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

show abstract

“…Los datos relativos sobre la acumulación de metales en el tejido hepático del Delfín Moteado del Atlántico son escasos y fragmentados , Seixas et al 2009, Lemos et al 2013, y la presente investigación contribuye con uno de los primeros resultados de Hg en su tejido muscular (Fielding & Evans 2014).…”

Section: Discussionunclassified

Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico

Kehrig

Baptista

Beneditto

et al. 2017

Rev. biol. mar. oceanogr.

Self Cite

View full text Add to dashboard Cite

N) was conducted in the food chain of the Atlantic spotted dolphin (Stenella frontalis), including phytoplankton, zooplankton, planktivorous fish and its major prey (predatory fish and a single species of cephalopod), that compose a tropical trophic chain of the Brazilian southeastern coast. Tissue concentrations of Hg in a voracious predator fish, the largehead hairtail (Trichiurus lepturus), one of the dolphin's prey, were 9.8 times lower than median concentrations found in dolphin tissues.  15 N values in predatory fish were found to be lower to those of its predator the spotted dolphin. Isotopic data suggested significant differences for  15 N along the trophic chain, with the top predator (dolphin) exhibiting heavier value, followed by the voracious predator fish and the benthonic carnivorous fish, the whitemouth croaker (Micropogonias furnieri). Phytoplankton displayed the lightest  15 N, followed by zooplankton and the planktophagous fish, the lebranche mullet (Mugil liza). This fish species and the cephalopod showed the lowest median Hg concentration. All links of the entire trophic chain presented trophic transfer of Hg with a biomagnification factor higher than 1. A significant relationship was found between the log Hg concentration and trophic level (TL) of all evaluated species, with a positive slope (= 0.87). The calculated trophic magnification factor (TMF= 7.44) indicates that Hg concentration increased per TL, and also that the entire coastal food chain from the South Atlantic Ocean presented a biomagnification power of Hg within a range previously reported for tropical coastal ecosystems. Key words: Marine mammal, coastal aquatic biota, toxic element, biotransference, ecological tracerResumen.-Se realizó una evaluación de las concentraciones del mercurio (Hg) y del isótopo estable de nitrógeno ( 15 N) en la cadena trófica del Delfín Moteado del Atlántico (Stenella frontalis), incluyendo fitoplancton, zooplancton, peces planctívoros y sus principales presas (peces depredadores y una sola especie de cefalópodo), componentes de una cadena trófica tropical de la costa sureste de Brasil. Una de las presas del delfín, un pez depredador voraz, el pez sable (Trichiurus lepturus), presentó una concentración mediana del Hg 9,8 veces inferior que la del delfín. El valor de  15 N es más bajo que al de su depredador. Los datos del isótopo han sugerido que ha habido diferencias significativas para el  15 N a lo largo de la cadena trófica, en la que en el mayor depredador (delfín) se ha mostrado más pesado, seguido por el pez depredador y el pez bentófago, la corvina (Micropogonias furnieri). Se ha observado que el fitoplancton presentó el  15 N más liviano, seguido por el zooplancton y el pez planctófago, el lebranche (Mugil liza). Este pez y el cefalópodo han mostrado la mediana más baja de Hg. Se han encontrado transferencias mayores que 1 en todos los vínculos de la cadena evaluada. Se ha obtenido una relación significativamente positiva entre la concentración del Hg (en logaritmo) y el nivel trófi...

show abstract

“…In particular, marine mammals are able to bind metals, such as inorganic Hg, to metallothioneins which are cytosolic low-molecular weight proteins with a high cysteine content. However, marine mammals have to consume large amounts of food and, given the efficiency of assimilation of the MeHg contained within the food, they naturally ingest high levels of this pollutant and have had to develop detoxification processes of this very toxic compound (Lemos et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Analysis of mercury and methylmercury concentrations, and selenium:mercury molar ratios for a toxicological assessment of sperm whales (Physeter macrocephalus) in the most recent stranding event along the Adriatic coast (Southern Italy, Mediterranean Sea)

et al. 2015

View full text Add to dashboard Cite

Small cetaceans found stranded or accidentally captured in southeastern Brazil: Bioindicators of essential and non-essential trace elements in the environment

Cited by 48 publications

References 60 publications

Trace Element Concentrations in Liver of 16 Species of Cetaceans Stranded on Pacific Islands from 1997 through 2013

Trace Element Concentrations in Liver of 16 Species of Cetaceans Stranded on Pacific Islands from 1997 through 2013

Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico

Analysis of mercury and methylmercury concentrations, and selenium:mercury molar ratios for a toxicological assessment of sperm whales (Physeter macrocephalus) in the most recent stranding event along the Adriatic coast (Southern Italy, Mediterranean Sea)

Contact Info

Product

Resources

About