Metal stresses affect the population dynamics of disease transmission in aquaculture species

Liao, Chung‐Min; Chang, C. F.; Yeh, Ching-Hung; Chen, Szu-Chieh; Chiang, Kuo-Chin; Chio, Chia-Pin; Chou, Berry Yun-Hua; Jou, Li-John; Lien, Guang-Wen; Lin, Chieh-Ming; Shen, Huan-Hsiang; Wu, Guan-De

doi:10.1016/j.aquaculture.2006.02.076

Cited by 28 publications

(18 citation statements)

References 29 publications

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“…different penaeid shrimps exposed to metals alone (Soegianto et al, 1999a,b;Barbieri, 2007Barbieri, , 2009 or in mixtures (Wu and Chen, 2004). It should also be of environmental concern, because metals cause increased susceptibility to other stressors in aquatic organisms (Liao et al, 2006). Some authors have pointed out that it is difficult to extrapolate laboratory results to the natural environment, because other variables (pH, alkalinity, natural chelators, temperature and salinity, among others) may affect the response of aquatic organisms modifying the availability as well as the toxicity of metals (Wong et al, 1993;Wu and Chen, 2004).…”

Section: Discussionmentioning

confidence: 97%

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Frías-Espericueta

Voltolina²,

Osuna-López

et al. 2009

Marine Environmental Research

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According to the literature, the safe level of a toxic substance for any given organism may be calculated from its median lethal concentration multiplied by a suitable application factor (AF: usually 0.1 and 0.01). The medial lethal concentrations for Litopenaeus vannamei postlarvae exposed to the mixtures in equitoxic proportions of Cd-Hg, Hg-Zn and Hg-Pb were close to one order of magnitude lower than the values calculated from individual toxicity tests, indicating a synergistic effect, while the mixture Cd-Zn showed an antagonistic effect. Exposure to the mixture of Cu, Fe, Mn, Zn, Cd, Hg and Pb caused 63.3% and 100% mortality after 21 and 13 days for 0.05 and 0.1 AF, showing that environmental safe concentrations of toxicants should not be calculated from individual toxicity tests.

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Section: Discussionmentioning

confidence: 97%

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Frías-Espericueta

Voltolina²,

Osuna-López

et al. 2009

Marine Environmental Research

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“…damselae infection (Wang and Chen 2006a). H 2 O 2 accelerates the mortality of Tenacibaculum maritimuminfected turbot (Avendaño-Herrera et al 2006), while metal stress influences disease transmission and susceptibility of aquaculture species (Liao et al 2006). Furthermore, hypoxic-stressed Penaeus styliriostris are more sensitive to infection by V. alginolyticus (Le Moullac et al 1998).…”

Section: Discussionmentioning

confidence: 99%

Exposure of gnotobiotic Artemia franciscana larvae to abiotic stress promotes heat shock protein 70 synthesis and enhances resistance to pathogenic Vibrio campbellii

Sung

Pineda

MacRae

et al. 2008

Cell Stress and Chaperones

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Larvae of the brine shrimp Artemia franciscana serve as important feed in fish and shellfish larviculture; however, they are subject to bacterial diseases that devastate entire populations and consequently hinder their use in aquaculture. Exposure to abiotic stress was shown previously to shield Artemia larvae against infection by pathogenic Vibrio, with the results suggesting a mechanistic role for heat shock protein 70. In the current report, combined hypothermic/hyperthermic shock followed by recovery at ambient temperature induced Hsp70 synthesis in Artemia larvae. Thermotolerance was also increased as was protection against infection by Vibrio campbellii, the latter indicated by reduced mortality and lower bacterial load in challenge tests. Resistance to Vibrio improved in the face of declining body mass as demonstrated by measurement of ash-free dry weight. Hypothermic stress only and acute osmotic insult did not promote Hsp70 expression and thermotolerance in Artemia larvae nor was resistance to Vibrio challenge augmented. The data support a causal link between Hsp70 accumulation induced by abiotic stress and enhanced resistance to infection by V. campbellii, perhaps via stimulation of the Artemia immune system. This possibility is now under investigation, and the work may reveal fundamental properties of crustacean immunity. Additionally, the findings are important in aquaculture where development of procedures to prevent bacterial infection of feed stock such as Artemia larvae is a priority.

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“…Some authors report GST induction [12,14], whereas others reported GST inhibition [15,16]. Considering that it is common to have pesticide [17,18] and heavy metal contamination in coastal aquaculture sites [19,20], and that heavy metals facilitate the transmission of diseases in aquatic organisms [21], we pursued a biochemical approach to understand the role of cadmium and copper in the function of shrimp GST.…”

Section: Introductionmentioning

confidence: 99%

Inhibition by Cu²⁺ and Cd²⁺ of a mu‐class glutathione S‐transferase from shrimp Litopenaeus vannamei

Salazar-Medina

García-Rico

García-Orozco

et al. 2010

J Biochem & Molecular Tox

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Glutathione S-transferases (GSTs) are a family of detoxifying enzymes that catalyze the conjugation of glutathione (GSH) to electrophiles, thereby increasing the solubility of xenobiotics and aiding its excretion from the cell. The present work presents the inhibition of a mu-class GST of the marine shrimp Litopenaeus vannamei by copper (Cu2+) and cadmium (Cd2+). The protein was overexpressed in bacteria and its enzymatic activity measured using 1-chloro-2,4-dinitrobenzene. The mean inhibitory concentration (IC(50)) for shrimp GST against Cu2+) was 4.77 microM and for Cd2+ was 0.39 microM. A molecular model of the protein based on the crystal structure of a maize GST bound to cadmium showed that the metal binds in the GSH-binding site by coordination with Asp and Gln residues. These results are consistent with the experimental data and suggest that sublethal concentration of metals may affect the capacity of the organism to detoxify pesticides or xenobiotics.

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Metal stresses affect the population dynamics of disease transmission in aquaculture species

Cited by 28 publications

References 29 publications

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Exposure of gnotobiotic Artemia franciscana larvae to abiotic stress promotes heat shock protein 70 synthesis and enhances resistance to pathogenic Vibrio campbellii

Inhibition by Cu²⁺ and Cd²⁺ of a mu‐class glutathione S‐transferase from shrimp Litopenaeus vannamei

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Metal stresses affect the population dynamics of disease transmission in aquaculture species

Cited by 28 publications

References 29 publications

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Toxicity of metal mixtures to the Pacific white shrimp Litopenaeus vannamei postlarvae

Exposure of gnotobiotic Artemia franciscana larvae to abiotic stress promotes heat shock protein 70 synthesis and enhances resistance to pathogenic Vibrio campbellii

Inhibition by Cu2+ and Cd2+ of a mu‐class glutathione S‐transferase from shrimp Litopenaeus vannamei

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Inhibition by Cu²⁺ and Cd²⁺ of a mu‐class glutathione S‐transferase from shrimp Litopenaeus vannamei