Table 2 Summary of DNA extraction and quality assessment from each sample type. DNA yield and quality (using absorption ratio as a proxy) varied significantly with sampling method (Kruskal-Wallis rank sum tests with two degrees of freedom, χ2 = 32.5, p < 0.01 and χ2 = 23.1, p < 0.01 for yield and absorption ratio respectively).

From: Validation of two swabbing methods to sample DNA for genotyping Atlantic bluefin tuna (Thunnus thynnus)

Sample

type (n)

yield

(ng/ ml)

260/280 nm absorbtion ratio

Absorption

ratio range

Fin clip (19)

262.7 ± 285.3

2 ± 0.06

1.87–2.08

Skin swab (37)

112.8 ± 83.3

1.99 ± 0.28

1.1–2.25

Pole swab (10)

9.60 ± 6.7

1.39 ± 0.35

0.83–1.95

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