Diversity and Dynamics of Alexandrium fundyense Blooms
Author Information
Author(s): Erdner Deana L., Richlen Mindy, McCauley Linda A. R., Anderson Donald M.
Primary Institution: University of Texas Marine Science Institute
Hypothesis
The combined effects of differential growth and reproduction rates serve to reduce gene flow between genetically distinct sub-populations of Alexandrium fundyense.
Conclusion
The study found that the Gulf of Maine has a single regional population of Alexandrium fundyense comprising two genetically distinct sub-populations that change over time due to environmental selection.
Supporting Evidence
- The bloom covered hundreds of kilometers and lasted almost two months.
- Genotypic analyses revealed two genetically distinct sub-populations of Alexandrium fundyense.
- The study provides evidence of genetic differentiation between early- and late-bloom samples.
Takeaway
Scientists studied a big bloom of a toxic algae called Alexandrium fundyense and found that it has different groups that change over time, kind of like how kids in a playground might change who they play with based on the weather.
Methodology
The study used microsatellite markers to genotype 171 clonal isolates from six locations in the Gulf of Maine over a bloom period from May to July 2005.
Limitations
The temporal and geographic density of samples was limited, which may affect the estimates of diversity and differentiation.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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