Mercury Concentrations in the Fish Community from Indrawati River, Nepal

Aastha Pandey; Chhatra Mani Sharma; Shichang Kang; Qianggong Zhang; Lekhendra Tripathee; Junming Guo; Xiaofei Li; Shiwei Sun; Rukumesh Paudyal; Prakash Acharya; Mika Sillanpää

doi:10.1007/s00128-017-2161-z

Mercury Concentrations in the Fish Community from Indrawati River, Nepal

Aastha Pandey, Chhatra Mani Sharma, Shichang Kang, Qianggong Zhang, Lekhendra Tripathee, Junming Guo, Xiaofei Li, Shiwei Sun, Rukumesh Paudyal, Prakash Acharya, Mika Sillanpää

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This study quantified concentrations of mercury (Hg) and its trophic transfer along the fish community in the Indrawati River, Nepal. Stable isotope ratios of nitrogen (δ¹⁵N) and carbon (δ¹³C), complemented by stomach contents data were used to assess the food web structure and trophic transfer of Hg in 54 fishes; 43 Shizothorax richardsonii and 11 Barilius spp. [B. bendelisis (1), B. vagra (3) and B. barila (7)]. Sixty-one muscle samples (including six replicates) were used for the analysis of total mercury (THg) and stable isotopes. Mean THg concentrations in B. spp. and the more common species S. richardsonii was observed to be 218.23 (ng/g, ww) and 90.82 (ng/g, ww), respectively. THg versus total length in both S. richardsonii and B. spp. showed a decreasing tendency with an increase in age. Regression of logTHg versus δ¹⁵N among the fish species showed a significant positive correlation only in S. richardsonii indicating biomagnification along the trophic level in this species.

Original language	English
Pages (from-to)	500-505
Number of pages	6
Journal	Bulletin of Environmental Contamination and Toxicology
Volume	99
Issue number	4
DOIs	https://doi.org/10.1007/s00128-017-2161-z
Publication status	Published - Oct 2017
Externally published	Yes

Keywords

Bioaccumulation
Biomagnification
Himalayan River

ASJC Scopus subject areas

Toxicology
Pollution
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s00128-017-2161-z

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title = "Mercury Concentrations in the Fish Community from Indrawati River, Nepal",

abstract = "This study quantified concentrations of mercury (Hg) and its trophic transfer along the fish community in the Indrawati River, Nepal. Stable isotope ratios of nitrogen (δ15N) and carbon (δ13C), complemented by stomach contents data were used to assess the food web structure and trophic transfer of Hg in 54 fishes; 43 Shizothorax richardsonii and 11 Barilius spp. [B. bendelisis (1), B. vagra (3) and B. barila (7)]. Sixty-one muscle samples (including six replicates) were used for the analysis of total mercury (THg) and stable isotopes. Mean THg concentrations in B. spp. and the more common species S. richardsonii was observed to be 218.23 (ng/g, ww) and 90.82 (ng/g, ww), respectively. THg versus total length in both S. richardsonii and B. spp. showed a decreasing tendency with an increase in age. Regression of logTHg versus δ15N among the fish species showed a significant positive correlation only in S. richardsonii indicating biomagnification along the trophic level in this species.",

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doi = "10.1007/s00128-017-2161-z",

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TY - JOUR

T1 - Mercury Concentrations in the Fish Community from Indrawati River, Nepal

AU - Pandey, Aastha

AU - Sharma, Chhatra Mani

AU - Kang, Shichang

AU - Zhang, Qianggong

AU - Tripathee, Lekhendra

AU - Guo, Junming

AU - Li, Xiaofei

AU - Sun, Shiwei

AU - Paudyal, Rukumesh

AU - Acharya, Prakash

AU - Sillanpää, Mika

PY - 2017/10

Y1 - 2017/10

N2 - This study quantified concentrations of mercury (Hg) and its trophic transfer along the fish community in the Indrawati River, Nepal. Stable isotope ratios of nitrogen (δ15N) and carbon (δ13C), complemented by stomach contents data were used to assess the food web structure and trophic transfer of Hg in 54 fishes; 43 Shizothorax richardsonii and 11 Barilius spp. [B. bendelisis (1), B. vagra (3) and B. barila (7)]. Sixty-one muscle samples (including six replicates) were used for the analysis of total mercury (THg) and stable isotopes. Mean THg concentrations in B. spp. and the more common species S. richardsonii was observed to be 218.23 (ng/g, ww) and 90.82 (ng/g, ww), respectively. THg versus total length in both S. richardsonii and B. spp. showed a decreasing tendency with an increase in age. Regression of logTHg versus δ15N among the fish species showed a significant positive correlation only in S. richardsonii indicating biomagnification along the trophic level in this species.

AB - This study quantified concentrations of mercury (Hg) and its trophic transfer along the fish community in the Indrawati River, Nepal. Stable isotope ratios of nitrogen (δ15N) and carbon (δ13C), complemented by stomach contents data were used to assess the food web structure and trophic transfer of Hg in 54 fishes; 43 Shizothorax richardsonii and 11 Barilius spp. [B. bendelisis (1), B. vagra (3) and B. barila (7)]. Sixty-one muscle samples (including six replicates) were used for the analysis of total mercury (THg) and stable isotopes. Mean THg concentrations in B. spp. and the more common species S. richardsonii was observed to be 218.23 (ng/g, ww) and 90.82 (ng/g, ww), respectively. THg versus total length in both S. richardsonii and B. spp. showed a decreasing tendency with an increase in age. Regression of logTHg versus δ15N among the fish species showed a significant positive correlation only in S. richardsonii indicating biomagnification along the trophic level in this species.

KW - Bioaccumulation

KW - Biomagnification

KW - Himalayan River

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ER -

Mercury Concentrations in the Fish Community from Indrawati River, Nepal

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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