Skip to main content

Table 1 Pokey and rRNA gene number in Daphnia from North America

From: Copy number variation of ribosomal DNA and Pokey transposons in natural populations of Daphnia

   

Number of genes mean/range

Species

Number of populations

Number of isolates

Tif:Gtp 1

18S

t28S2

r Pokey3

g Pokey4

r Inserts5

% Pokey in 28S6

% r Inserts7

D. pulex

16

43

0.90

0.65 to 1.31

221.0

94 to 489.5

260.0

88 to 724.5

2.1

0 to 12

9.6

4 to 18

21.1

0 to 113.5

17.2

0 to 63.2

6.5

0 to 28.6

D. pulicaria

6

26

0.92

0.70 to 1.32

215.1

97 to 444

266.1

109 to 654.5

6.6

0 to 44.5

9.5

4.5 to 24

14.9

0 to 76

27.1

0 to 79.2

4.6

0 to 19.7

D. pulicaria - 38

6

23

0.93

0.70 to 1.32

217.3

97 to 444

273.9

109 to 654.5

2.7

0 to 7.5

8.9

4.5 to 18

16.9

0 to 76

21.2

0 to 57.7

5.2

0 to 19.7

  1. 1. Number of Tif genes relative to Gtp genes.
  2. 2. Denotes total 28S genes.
  3. 3. Denotes Pokey in 28S genes.
  4. 4. Denotes Pokey in other genome sites. Calculated as (total Pokey - rPokey).
  5. 5. Denotes other rDNA inserts, calculated as (t28S-u28S-rPokey) where u28S is uninserted 28S genes.
  6. 6. Calculated as (rPokey/total Pokey x 100).
  7. 7. Calculated as (rInserts/t28S × 100).
  8. 8. Results obtained after removing three D. pulicaria isolates with high Pokey load (see text)