By contrast, the longest development time, and the lowest fecundity and fertility were on groundnut.
According to the results, the insects reared on triticale had shortest development time, and the highest fecundity and fertility.
The area where the interaction of the evolution of resistance and resources has received the most attention is the evolution of resistance to Bt. Documented fitness costs include increased development time, and reduced mass, fecundity, and survival (Janmaat and Myers 2003, 2005; Raymond et al. 2007a; Gassmann et al. 2009; Paris et al. 2011).
Indeed, selection was shown to have induced many changes in the LiTOX strain, including decreased egg survival to desiccation, longer larval development time and decreased female fecundity [ 24], reflecting the evolution of resistance costs that are not directly involved in resistance to Bti toxins.
Tradeoffs between resistance and aspects of host fitness, including development time, survival, and fecundity have been observed in other systems [ 20, 22- 24], but they are often difficult to detect in aphid systems [ 36, 51].
We assayed pre-adult (development time and pre-adult survivorship) and adult (lifespan and lifetime fecundity) fitness traits of fly populations subjected to selection for narrow gate of emergence to examine their fitness, and asked if a correlation exists between the timing of emergence and these life history traits.
JH deficiencies in other Lepidopteran species have been shown to reduce adult size, increase development time, reduce fecundity, and alter reproductive and courtship behaviors [2], [12], [17] [18].
When simw (Dsim) mtDNA was paired with OreR (Dmel) nuclear chromosomes, a suite of abnormal phenotypes was observed, including: delayed development time, reduced fecundity and shortened scutellar bristles.
For the assessment of effects on and mediated by TOs, data on the efficacy and on the basic biological effects (e.g. mortality, development time, fecundity, etc). of the GMPs for all listed target pests are essential.
Altered metabolism in Bti resistant mosquitoes was revealed by fitness costs expressed at any mosquito life-stage (larval development time, fecundity, egg survival) [ 13].
