Back One Page
Table 1. Comparison of means between the two experimental groups for variables related to the time spent by Trichogramma females in various activities and expressed as a proportion (i.e., relatively to the length of the observational period).
Behavior Plant structure n Mean time proportion ± Std Result of of t test
Locomotion
walking Simple 30 0.5031 ± 0.1922 n.s.
Complex 30 0.2676 ± 0.1864
standing Simple 30 0.4145 ± 0.1892 n.s.
Complex 30 0.6364 ± 0.2149
flying Simple 13 0.1012 ± 0.1475 n.s.
Complex 13 0.0671 ± 0.0759
Substrate
twig Simple 30 0.1953 ± 0.2179 n.s.
Complex 30 0.0881 ± 0.1107
within perimeter Simple 30 0.3546 ± 0.2078 n.s.
Complex 30 0.3910 ± 0.2522
veins Simple 24 0.0304 ± 0.0309 *
Complex 22 0.1756 ± 0.2499
limb Simple 30 0.2315 ± 0.2363 n.s.
Complex 30 0.3291 ± 0.2558
eggs Simple 23 0.2534 ± 0.1697 n.s.
Complex 11 0.2075 ± 0.1689
Leaf side
inferior Simple 29 0.1974 ± 0.2439 n.s.
Complex 30 0.2898 ± 0.2690
superior Simple 26 0.0468 ± 0.0422 n.s.
Complex 26 0.0452 ± 0.0694
limb inferior side Simple 29 0.1974 ± 0.2439 n.s.
Complex 30 0.2898 ± 0.2690
limb superior side Simple 26 0.0468 ± 0.0422 n.s.
Complex 26 0.0452 ± 0.0694
within perimeter Simple 30 0.1213 ± 0.0985 *
inferior side Complex 29 0.2196 ± 0.2523
within perimeter Simple 29 0.2413 ± 0.1804 n.s.
superior side Complex 27 0.1841 ± 0.1968
 
on a leaf without Simple 30 0.6104 ± 0.2458 *
encountering an egg Complex 30 0.8358 ± 0.1867
before encountering Simple 22 0.2253 ± 0.2968 n.s.
the first egg Complex 11 0.1219 ± 0.1545
between successive Simple 11 885.5 ± 466.22 n/a
discoveries of two eggs Complex 1 514.3
handling time Simple 23 0.2534 ± 0.1697 n.s.
Complex 11 0.2075 ± 0.1690
on plant Simple 30 6247.6 ± 1140.1 n.s.
(total residence) Complex 30 2769.6 ± 906.3

The statistical test used to compare means is the t test, with preliminary comparison of the variances with a F test.
n = number of replicates;
*= the two mean times are significantly different at p = 0.05; n.s. = they are not significantly different
Back One Page