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Table 2 Morphometric measurements of the Pristionchus species

From: Sex, bugs and Haldane's rule: the nematode genus Pristionchus in the United States

  P. aerivorus (Cobb in Meirill & Ford 1916) P. aerivorus RS 5106 P. pseudaerivorus RS 5139 P. marianneae RS 5108 P. paulii RS 5130 P. americanus RS 5140
  females males females males females males females males females males females males
L 1500 800 1494 (1265–1683) 992 (868–1101) 1715 (1496–1934) 1128 (850–1333) 1277 (983–1496) 878 (761–983) 1437 (1077–1809) 1018 (972–1069) 1207 (882–1510) 1103 (938–1392)
L' 1305 712 1281 863 1542 1028 1113 795 1240 908 1042 989
    (1045–1464) (746–943) (1306–1731) (779–1212) (836–1290) (689–896) (898–1619) (851–950) (749–1329) (820–1282)
mbd 88.5 80 97(71–122) 68(51–80) 139(119–158) 97(72–114) 83(67–99) 54(51–57) 94(77–121) 64(53–69) 118(92–141) 92(73–125)
sl 12 7,2 7(4.9–9.3) 5.6(4.2–7.6) 7.9(6.9–9.3) 6.7(5.4–7.8) 8.4(7.6–9.6) 7.5(6.1–10.2) 9.6(7.8–11.5) 8.9(7.0–10.1) 11.6(10.1–14.7) 8.1(6.1–11)
sd    8(7–10) 6(4–9) 8(7–9) 8(6–8) 8(7–10) 7(6–7) 7(6–9) 7(7–8) 9.3(6.9–12.8) 8.2(6.8–10.4)
Pl 180 120 176(168–184) 153(144–159) 193(183–198) 174(160–188) 176(157–189) 154(142–163) 208(184–229) 184(172–191) 181(163–199) 176(160–190)
cl 133.5 88 106(98–112) 92(83–97) 113(106–118) 101(89–112) 108(99–115) 91(80–96) 138(119–147) 116(111–122) 112(101–121) 107(90–115)
c/p 73.8 73.3 60(58–62) 60(52–63) 60(58–61) 58(55–60) 61(59–63) 59(56–62) 67(62–77) 63(61–66) 62(59–64) 61(57–64)
mbbd    33(29–36) 23(20–26) 32(29–36) 26(22–29) 33(28–36) 25(23–27) 33(27–41) 27(25–30) 30(27–33) 24(21–28)
tbd    31(27–35) 23(21–26) 36(30–44) 29(23–32) 28(24–34) 22(20–24) 33(25–43) 27(23–30) 32(28–38) 28(24–30)
ae-v 765   667(592–763)   837(754–883)   639(473–751)   731(583–885)   605(379–788)  
rl    51(47–58) 44(41–48) 45(35–56) 44(35–48) 43(37–49) 38(35–42) 40(33–46) 36(31–44) 43(31–53) 43(33–54)
abd 39 36.8 39(34–48) 36(33–39) 49(44–53) 51(44–58) 38(33–41) 40(39–41) 40(32–49) 42(37–47) 46(38–55) 46(35–59)
spic   55.2   57(52–62)   60(50–68)   52(46–55)   50(40–58)   50(46–57)
gub   18.4   25(24–26)   25(23–29)   25(23–30)   24(17–29)   22(20–24)
  1. Legend: L: total length; L': head to anus; mbd: max body diameter; sl: stoma length; sd: stoma diameter; pl: pharynx length; cl: corpus length; c/p: corpus length/pharynx length in %; mbbd: median bulb diameter; tbbd: terminal bulb diameter; ae-v: head to vulva; rl: rectum length; abd; anal body diameter; spic: spiculum length; gub: gubernaculum length; measurements are given in μ m; average in front of and minima/maxima in parenthesis.