Toxicity and distribution of Aroclor® 1254 in the pink shrimp Penaeus duorarum

Nimmo, Del Wayne R.; Blackman, R. R.; Wilson, Alfred J.; Forester, Jerrold

doi:10.1007/bf00401266

Cited by 69 publications

(11 citation statements)

References 7 publications

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“…Before and immediately after molt the shrimps are more sensitive. Similar results were reported by Duke et al 1331 and Nimmo et al [34] regarding exposure of crustacea to polychlorinated biphenyls (Aroclor 1254). Hubschman [12], in her study on the crab Orconectes rusticus, found that animals in the intermolt stage were more resistant to copper than animals in other molt stages.…”

Section: Effect Of Molt Stage On the Acute Toxicity Of Ammoniasupporting

confidence: 89%

Effect of Dissolved Oxygen and the Molt Stage on the Acute Toxicity of Ammonia to Juvenile Green Tiger Prawn Penaeus Semisulcatus

Wajsbrot¹,

Gasith²,

Krom³

et al. 1990

Environ Toxicol Chem

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The mean 96‐h LC50 value of ammonia for juvenile Penaeus semisulcatus (0.35–2.4 g) was found to be 23.7 mg TAN/L (19.3–28.7, 95% C.L.). There was no significant effect of size on the sensitivity of juvenile shrimp to ammonia. Increased toxicity of ammonia to juvenile P. semisulcatus was observed at dissolved oxygen (DO) levels below 55% saturation (3.7 ppm). At 27% DO saturation, the ammonia toxicity (96‐h LC50) was doubled. In addition, the time of exposure to ammonia required for a given lethal effect decreased with reduced dissolved oxygen concentrations. Before and immediately after molt, the shrimps were more sensitive to ammonia. Due to the effect of the molt stage on the apparent ammonia toxicity, we recommend a minimum of 96‐h bioassay for determining toxicity levels in shrimps. In a shorter period, the physiological changes occurring at the time of molting can confound the results of the experiment.

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Section: Effect Of Molt Stage On the Acute Toxicity Of Ammoniasupporting

confidence: 89%

Effect of Dissolved Oxygen and the Molt Stage on the Acute Toxicity of Ammonia to Juvenile Green Tiger Prawn Penaeus Semisulcatus

Wajsbrot¹,

Gasith²,

Krom³

et al. 1990

Environ Toxicol Chem

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“…For Penaeus monodon, sensitivity to nitrate may be related to ontogeny and natural habitat. Thus, Crustacea are reported to be more susceptible to toxins during ecdysis (Duke et al 1970, Nimmo et al 1971, Bookhout et al 1972, Armstrong et al 1976, and in the present study the protozoea moulted from Protozoea I to Protozoea II stage during the experimental period. With respect to habitat, P. monodon larvae occur naturally in offshore, tropical regions (Motoh 1985) which typically contain extremely low levels of dissolved nitrate (Spencer 1975).…”

Section: Discussionmentioning

confidence: 88%

Nitrate toxicity toPenaeus monodon protozoea

1991

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Abstract. Increased levels of nitrate occur in natural waters due to pollution, and in aquaculture systems from nitrification and addition of microalgal cultures for feeding. Static bioassays showed that significant mortality of larval Penaeus monodon (Fabricius) occurred within 40 h at nitrate concentrations as tow as 1 mg NO~-1-1. Sublethal effects of this concentration resulted in changes to ganglionic neuropiles and muscles. At higher concentrations (10 and 100 mg NO;-1-1), additional tissues were affected including the hypodermis, midgut and proventriculus. This is the first report of toxicity to a marine organism of nitrate at concentrations normally present in enclosed seawater and mariculture systems. The results are discussed in terms of management of culture systems and of natural marine ecosystems containing elevated levels of nitrate.

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“…However, increases in respiratory activity of shrimp exposed to PCB-153 treatments might have occurred, since toxic stress is almost instantaneous, even though the PCB concentration was very low (Reyes et al, 2003). Furthermore, several authors have suggested that shrimp show great susceptibility to PCBs, especially during molt (Duke et al, 1970;Nimmo et al, 1971).…”

Section: Discussionmentioning

confidence: 99%

Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and human health risk assessment

Grilo

Cardoso

Pato

et al. 2014

Ecotoxicology and Environmental Safety

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a b s t r a c tA medium-term mesocosm exposure study was conducted to elucidate bioaccumulation and depuration of polychlorinated biphenyl congener 153 (PCB-153) in edible shrimp Palaemonetes varians. Over the 15-day exposure period, shrimp under different exposure concentrations exhibited a significant increase in PCB-153 concentration compared with control organisms. Distinct bioaccumulation patterns and uptake rates were observed depending on the exposure concentrations. For low PCB-153 exposure levels ), accumulation was faster and linear. In addition, the bioaccumulation rate was not proportional to PCB-153 concentration, and the bioaccumulation was higher at intermediate exposure concentrations. Regarding the depuration phase, P. varians lost up to 30% of PCB-153 after 72 h and levels continued slowly to decrease until the end of the 30-d experimental period. However, PCB-153 levels in shrimp did not reach background values, and those exposed to moderate and high PCB-153 concentrations presented contamination levels much higher than the regulatory limit for human food consumption (75 ng g À 1 ww for Σ 6 PCB).

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Toxicity and distribution of Aroclor® 1254 in the pink shrimp Penaeus duorarum

Cited by 69 publications

References 7 publications

Effect of Dissolved Oxygen and the Molt Stage on the Acute Toxicity of Ammonia to Juvenile Green Tiger Prawn Penaeus Semisulcatus

Effect of Dissolved Oxygen and the Molt Stage on the Acute Toxicity of Ammonia to Juvenile Green Tiger Prawn Penaeus Semisulcatus

Nitrate toxicity toPenaeus monodon protozoea

Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and human health risk assessment

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