Exact P tests for population differentiation (test of haplotype frequencies) were also non-significant (P>0.05), indicating very weak genetic differentiation and supporting the null hypothesis of panmixia
High levels of genetic variability and panmixia
of the Tambaqui Colossoma macropomum (Cuvier, 1816) in the main channel of the Amazon River.
(Cnidaria: Myxosporea) provides evidence of panmixia
and ceratomyxid radiation in the Amazon basin.
Our analyses demonstrated contrasting patterns of global panmixia
and local isolation between different lineages of the O26 serogroup.
In contrast, under panmixia
with very little genetic isolation among sites, we expect more shared haplotypes across sites and fewer site-specific haplotypes.
Evidence of panmixia
between sympatric life history forms of coastal Cutthroat Trout in two lower Columbia River tributaries.
Multiple lineages and absence of panmixia
in the "circumpolar" crinoid Promachocrinus kerguelensis from the Atlantic sector of Antarctica.
and dispersal from the Mediterranean Basin to Macaronesian Islands of a macrolichen species.
To test the null hypothesis of panmixia
, genetic differentiation among the sampling sites was calculated with pairwise [F.sub.st] values (Weir & Cockerham 1984) and a permutation test with 1,000 iterations was used to assess the statistical significance (Genetix Version 4.02).
The null hypothesis of panmixia
(random distribution of haplotypes among populations) was also tested using an exact test of population differentiation (Raymond & Rousset 1995).