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.
More example sentences. Synonyms. 1  You can have really strong, obstinate opinions, so long as your facts are true, you're OK. 2  Thanks to the Prime Minister, s remarks, many people think that both farmers and the county council are being obstinate in refusing to reopen footpaths and bridle ways. Thanks to the Prime Minister, s remarks, many people think that both farmers and the county council are being obstinate in refusing to reopen footpaths and bridle ways. 2  Being the obstinate set of girls they were, the debate would carry on until one of them had decided it best to just kill the subject.