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Table 2 Chromosomal data for Monopterus albus populations from different Thailand regions

From: Karyotype diversity and evolutionary trends in the Asian swamp eel Monopterus albus (Synbranchiformes, Synbranchidae): a case of chromosomal speciation?

Region Population/Province Number of specimen 2n NF Karyotype NORs
Central Nakhon Nayok 5 18 24 6 m + 12a 2 (near telomere)
  7 24 24 24a 2 (near cetromere)
Nakhon Pathom 15 24 24 24a 2 (near cetromere)
Bangkok 8 24 24 24a 2 (near cetromere)
Sing Buri 10 24 24 24a 2 (near cetromere)
South Nakhon Si Thammarat 8 18 24 6 m + 12a 2 (near telomere)
Chumphon 8 24 24 24a 2 (near cetromere)
West Kanchanaburi 6 18 24 6 m + 12a 2 (near telomere)
(Sri Yok) 8 24 24 24a 2 (near cetromere)
Kanchanaburi (Sri Sawat) 11 24 24 24a 2 (near cetromere)
East Chon Buri 6 18 24 6 m + 12a 2 (near telomere)
10 24 24 24a 2 (near cetromere)
Sa Kaeo (including 9 18 24 6 m + 12a 2 (near telomere)
Campodia) 6 24 24 24a 2 (near cetromere)
Chanthaburi 15 24 24 24a 2 (near cetromere)
PrachinBuri 12 24 24 24a 2 (near cetromere)
North Tak 8 24 24 24a 2 (near cetromere)
Phayao 10 24 24 24a 2 (near cetromere)
Sukhothai 10 24 24 24a 2 (near cetromere)
Northeast KhonKaen 12 24 24 24a 2 (near cetromere)
Loei 8 24 24 24a 2 (near cetromere)
Roi Et 8 24 24 24a 2 (near cetromere)
Kalasin 5 24 24 24a 2 (near cetromere)
Buri Ram 6 24 24 24a 2 (near cetromere)
UdonThani 8 24 24 24a 2 (near cetromere)
Mahasarakham 4 24 24 24a 2 (near cetromere)
  1. Notes: 2n diploid number, NF fundamental number, m metacentric and a acrocentric chromosomes