Experiments were carried out to verify the existing information on the LC50 of waterborne Hg for L. vannamei postlarvae and determine that of juveniles. Additionally, the structure of different tissues of the organisms which survived the acute toxicity test was examined. The experiment with juveniles was performed after addition of 1.00, 0.75, 0.50, 0.25 and 0.10 mg/L of Hg (using HgCl ). For postlarvae, additions were 0.5, 0.4, 0.3, 0.2, 0.1 and 0.01 mg/L. Acute toxicity tests determined that, after 96 h of exposure to Hg, the respective LC values for juveniles and postlarvae of Litopenaeus vannamei were 0.50 and 0.25 mg/L. Although lower that the only value of LC known for L. vannamei postlarvae, these lethal concentrations are one order of magnitude higher than those known for larval and juvenile stages of other crustaceans, suggesting that L. vannamei has a high resistance to the toxic effects of waterborne Hg. The only histological damages in survivors to 96 h of exposure were observed in nervous tissues and consisted in the presence of necrotic cells. The degree of damage severity was related to the concentration of dissolved Hg, and the numbers of necrotic cells decreased progressively with increasing distance from
Thalassas: An International Journal of Marine Sciences – Springer Journals
Published: Jun 4, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera