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Table 4 Size (bp) and mean value of the GC content (%) of the ITS region

From: Sequence characterization of the 5S ribosomal DNA and the internal transcribed spacer (ITS) region in four European Donax species (Bivalvia: Donacidae)

Species

No. of clones

ITS1

5.8 gene

ITS2

ITS

Length

GC

Length

GC

Length

GC

Length

GC

D. semistriatus

22

452–457

62.6

157

57.3

283–287

64.0

892–900

62.1

D. trunculus

23

400–405

59.7

157

57.3

254–269

55.7

814–828

58.0

D. variegatus

13

452–453

62.6

157

57.3

283

64.8

892–893

62.4

D. vittatus

12

534–542

61.0

157

57.3

307–316

61.1

998–1014

60.5