Skip to main content

Table 4 Analyses (ANCOVAs) of the mean numbers of water mites in 2003 and 2004 and for the mean number of gregarines in 2004 in Coenagrion puella males and females (coded as colour class). In all three analyses body size was accounted for by using head width as a covariate.

From: Immune function and parasite resistance in male and polymorphic female Coenagrion puella

Year and parasite source df F P
2003, water mites 'colour class' 3 0.605 0.612
  population 1 12.201 0.001
  'colour class' × population 3 1.886 0.682
  head width 1 8.397 0.004
2004, water mites 'colour class' 3 2.261 0.082
  head width 1 11.428 0.001
2004, gregarines 'colour class' 3 0.419 0.740
  head width 1 0.024 0.877