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Table 1 C. briggsae natural isolate origins and fecundities.

From: Muller's Ratchet and compensatory mutation in Caenorhabditis briggsae mitochondrial genome evolution

Isolate Geographic Location Clade Fecundity
AF16 Ahmedabad, India TR 144.5 (5.9)
BW287* Beijing, China TE 163.5 (5.7)
ED3032 Taipei, Taiwan TR 171.8 (9.3)
ED3033 Taipei, Taiwan TR 111.8 (8.1)
ED3034 Taipei, Taiwan TR 110.0 (5.0)
ED3035 Taipei, Taiwan TR 109.0 (8.0)
ED3036 Taipei, Taiwan TR 98.0 (12.9)
ED3037 Taipei, Taiwan TR 122.3 (9.5)
ED3083 Johannesburg, S. Africa TR 100.0 (12.5)
ED3092 Nairobi, Kenya KE 188.0 (3.3)
ED3101 Nairobi, Kenya KE 205.8 (8.0)
EG4181 Utah, USA TE 176.0 (4.3)
EG4207A Utah, USA TE 181.0 (4.5)
HK104 Okayama, Japan TE 162.5 (7.6)
HK105 Sendai, Japan TE 75.3 (7.2)
JU403 Hermanville, France TE 105.5 (4.8)
JU439 Reykjavic, Iceland TE 118.5 (3.3)
JU516 Marsas, France TE 108.5 (3.7)
JU725 Chengyang, China TR 167.5 (2.6)
JU726 Tangshuo, China TR 122.3 (15.7)
JU793 Frechendets, France TE 132.8 (2.1)
PB800 Ohio, USA TE 177.5 (10.5)
PB826 Ohio, USA TE 165.3 (3.0)
VT847 Hawaii, USA TR 130.0 (6.2)
  1. Strain BW287 (identified by asterisk) has historically been known as a nematode in the genus Panagrolaimus; nuclear ribosomal DNA and mtDNA sequencing carried out in the Denver lab, involving strains obtained from three different sources, agree that this isolate is instead a strain of C. briggsae. EG4207A was established from a single nematode picked from EG4207 that constituted a C. briggsae lab population initially established from many nematodes. For Clade, TE indicates the temperate intraspecific clade, TR the tropical clade and KE the Kenya clade. Fecundity shows the mean numbers of progeny produced for each isolate (four worms assayed per strain) and the S. E. M. is shown in parentheses.