Malformations of the endangered Chinese sturgeon, Acipenser sinensis, and its causal agent

The anadromous Chinese sturgeon ( Acipenser sinensis) is endangered and listed among the first class of protected animals in China. The possible causes for the decline of this species are the effects of synthetic chemicals, and loss of critical habitat. Chinese sturgeon in the Yangtze River have acc...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences
Main Authors: Hu, Jianying, Zhang, Zhaobin, Wei, Qiwei, Zhen, Huajun, Zhao, Yanbin, Peng, Hui, Wan, Yi, Giesy, John P., Li, Luoxin, Zhang, Bo
Other Authors: Hu, JY (reprint author), Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China., Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China., Chinese Acad Fisheries Sci, Minist Agr China, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat & Utilizat, Jinzhou 434000, Hubei, Peoples R China., Univ Saskatchewan, Dept Vet Biomed Sci, Saskatoon, SK S7N 5B3, Canada., Univ Saskatchewan, Toxicol Ctr, Saskatoon, SK S7N 5B3, Canada., Michigan State Univ, Dept Zool, Ctr Intergrat Toxicol, E Lansing, MI 48824 USA., City Univ Hong Kong, Res Ctr Coastal Pollut & Conservat, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China., Peking Univ, Coll Life Sci, Ctr Dev Biol & Genet, Key Lab Cell Proliferat & Differentiat, Beijing 100871, Peoples R China.
Format: Journal/Newspaper
Language:English
Published: proceedings of the national academy of sciences of the united states of america 2009
Subjects:
teratogenesis
fish
triphenyltin
Yangtze River
MEDAKA ORYZIAS-LATIPES
EARLY-LIFE STAGES
MARINE FOOD-WEB
ORGANOTIN POLLUTION
COASTAL WATERS
TRIBUTYLTIN
TOXICITY
DIFFERENTIATION
CONTAMINATION
Acipenser baerii
Siberian sturgeon
Online Access:https://hdl.handle.net/20.500.11897/160726
https://doi.org/10.1073/pnas.0809434106
Description
Summary:The anadromous Chinese sturgeon ( Acipenser sinensis) is endangered and listed among the first class of protected animals in China. The possible causes for the decline of this species are the effects of synthetic chemicals, and loss of critical habitat. Chinese sturgeon in the Yangtze River have accumulated triphenyltin (TPT) to 31-128 ng/g wet weigh (ww) in liver, which is greater than the concentrations of tributyltin (<1.0 ng/g ww). Maternal transfer of TPT has resulted in concentrations of 25.5 +/- 13.0 ng/g ww in eggs of wild Chinese sturgeon, which poses a significant risk to the larvae naturally fertilized or hatched in the Yangtze River. The incidence of deformities in fry was 7.5%, with 1.2% of individuals exhibiting ocular abnormal development, and 6.3% exhibited skeletal/morphological deformations. The incidences of both ocular and skeletal/morphological deformations were directly proportional to the TPT concentration in the eggs of both the Chinese sturgeon and the Siberian sturgeon (Acipenser baerii) in controlled laboratory studies. The rates of deformities in the controlled studies were consistent with the rates caused at the similar concentrations in eggs collected from the field. Thus, TPT is the causal agent to induce the malformation of larvae of Chinese sturgeon. The incidence of deformed larvae of Chinese sturgeon is an indicator of overall population-level effects of TPT on Chinese sturgeon, because TPT at environmentally relevant concentrations can result in significantly decrease both quality and quantity of eggs and spawning frequency of fish. Multidisciplinary Sciences SCI(E) PubMed 45 ARTICLE 23 9339-9344 106

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