Morphotaxonomy, genetic affinities and ecology of Australian and Antarctic populations of the potentially fish killing, heterotrophic dinoflagellates Cryptoperidiniopsis brodyi and Pfiesteria piscicida ...
The heterotrophic dinoflagellate Cryptoperidiniopsis brodyi and closely related species were investigated from Australia-wide marine environments with regard to their morphology, phylogenetic relationships, interactions with shellfish larvae, and natural abundance. Nine isolates of C. brodyi and two...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23246183 https://figshare.utas.edu.au/articles/thesis/Morphotaxonomy_genetic_affinities_and_ecology_of_Australian_and_Antarctic_populations_of_the_potentially_fish_killing_heterotrophic_dinoflagellates_Cryptoperidiniopsis_brodyi_and_Pfiesteria_piscicida/23246183 |
| Summary: | The heterotrophic dinoflagellate Cryptoperidiniopsis brodyi and closely related species were investigated from Australia-wide marine environments with regard to their morphology, phylogenetic relationships, interactions with shellfish larvae, and natural abundance. Nine isolates of C. brodyi and two isolates of Pfiesteria piscicida were collected and cultured from Australia and ballast water originating from Indonesia. Scanning electron microscopy (SEM) and molecular sequence analyses of SSU, LSU, ITS, and 5.8S rDNA regions revealed that Australian C. brodyi strains have identical morphological features but include two different genetic variants. Isolates of C. brodyi from Australia, comprised the two ITS genotypes A and B which diverged 16.2% and 6.6%, respectively, of the ITS genotype from the U.S. type locality. Genotype A was widespread whereas genotype B thus far has only been found in Tasmania. Pfiesteria piscicida was cultured from ballast water indicating a potential inflow of foreign harmful algae ... |
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