Screening for toxicity and resistance to paralytic shellfish toxin of shore crabs inhabiting at Leizhou peninsula, China

Huajuan Lin; Yuji Nagashima; Peihong Jiang; Xiaoming Qin; Yao Lu; Chaohua Zhang

doi:10.1016/j.marenvres.2012.04.002

Screening for toxicity and resistance to paralytic shellfish toxin of shore crabs inhabiting at Leizhou peninsula, China

Mar Environ Res. 2012 Jul:78:48-52. doi: 10.1016/j.marenvres.2012.04.002. Epub 2012 Apr 14.

Authors

Huajuan Lin¹, Yuji Nagashima, Peihong Jiang, Xiaoming Qin, Yao Lu, Chaohua Zhang

Affiliation

¹ College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.

PMID: 22542566
DOI: 10.1016/j.marenvres.2012.04.002

Abstract

The situation of the environment contaminated by paralytic shellfish toxin (PST) in Leizhou peninsula, China, has attracted more attention since seafood poisoning occurred occasionally. In this study, we examined the toxicities of shore crab Leptodius exaratus, Thalamita crenata and Metopograpsus latifrons by mouse assay, resistance to PST by lethal test injection with PST, and discussed the toxicity neutralization of their hemolymph. The results showed 12% of shore crabs possessed toxicity of 4.3-4.4 MU/g. The 100% lethal dose of PST for M. latifrons was about 2 times of those for the other two crab species. The hemolymphs of the crabs were all able to neutralize PST and tetrodotoxin (TTX) toxicity in different extent. The above results indicate shore crabs at this area are exposed to an environment potentially contaminated with PST and/or TTX, and the toxicity neutralizing efficacy of their hemolymph directly affects their resistance to the toxins.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Brachyura*
Hemolymph / chemistry*
Male
Marine Toxins / toxicity*
Mice

Substances

Marine Toxins