Humans, birds and fish can all be affected by PSP toxins. Herbivorous zooplankton is the primary transvector which can in turn transmit the toxin to fish and possibly other marine creatures which consume zooplankton (Baden 1983). The usual route for humans is the consumption of raw or cooked contaminated shellfish.
The definition of obstinate is extremely stubborn and determined to have your own way. An example of obstinate is a person who drives during a severe hurricane despite major warnings not to do so. obstinate. not easily subdued, ended, etc. obstinate.
1. obscurity-the quality of being unclear or abstruse and hard to understand. Synonyms: abstruseness, reconditeness, obscureness. Antonyms: clarity, clearness, limpidity, lucidity, pellucidity-free from obscurity and easy to understand; the comprehensibility of clear expression.