return to your last point in text by using the [previous] in the left upper corner of your browser

Table VIII-1.

A review of mean values and variation coefficients per week for reproduction, recruitment, survival and dispersal. Survival in larval and pupal stages was not estimated in the field.

PROCESS/STAGE	MEAN VALUE (+ VARIATION COEFFIENT)
	FEMALES	MALES	ALL INDIVIDUALS
REPRODUCTION
spring generation
max egg prod. per oviposition	38
mean eggs laid per oviposition	32 (0.31)
viability of eggs			0.60 (0.60)
survival larval and pupal stage			0.09 (  -   )
tenerals per oviposition			1.80 (0.54)
summer generation
max egg prod. per oviposition	32
mean eggs laid per oviposition	25 (0.42)
viability of eggs			0.60 (0.60)
survival larval and pupal stage			0.10 (  -   )
tenerals per oviposition			1.50 (0.32)
SURVIVAL CHANCE OF ADULTS
restricted survival of tenerals1	0.89 (0.36)	0.96 (0.26)
survival in spring	0.89 (0.05)	0.91 (0.04)
survival in summer	0.86 (0.06)	0.88 (0.05)
survival in autumn	0.77 (0.07)	0.78 (0.09)
survival in winter	0.35 (0.82)	0.32 (0.73)
DISPERSAL ACTIVITIES
emigration by flight 2	0.025 (1.44)	0.050 (0.70)
survival during flight	<0.40	<0.40
emigration by swimming
in spring	0.33 (0.52)	0.36 (0.47)
in June/July	0.24 (0.57)	0.27 (0.44)
in August/September	0.23 (0.60)	0.26 (0.55)
in September/October	0.18 (0.60)	0.20 (0.59)
survival during swimming
in spring			0.70 (0.21)
in June/July			0.62 (0.44)
in August/September			0.84 (0.21)
in September/October			0.72 (0.36)

¹The survival chance of tenerals is found by multiplication this reduction factor with the survival chance per season mentioned below.
²Flight depends on weather, and, for females, reproductive activity less flight activity during reproduction

return to your last point in text by using the [previous] in the left upper corner of your browser