lipids for incorporation into developing follicles (Chapman 1998). Fat body mass and

hemolymph vitellogenin titers decrease in response to adult FR in grasshoppers (Hatle et al.

2006a), suggesting that my early fecundity results may be mediated by differences in the size of

this storage organ. Additionally, the synthesis of yolk compounds by the adult fat body is

controlled by hormones including juvenile hormone (JH) and ecdysone (Klowden 2002), both of

which have been shown to respond to feeding rates (Hatle et al. 2003, Tu and Tatar 2003).

Specifically, JH stimulates vitellogenesis in most adult insects (Chapman 1998) but not in C.

morosus (Bradley et al. 1995), so diet-induced differences in JH synthesis were probably not

responsible for the decreased fecundity I observed in this study. However, JH does facilitate the

uptake of vitellin by developing follicles in C. morosus (Bradley et al. 1995), suggesting that my

results for egg size may reflect differences in JH signaling.

 Unlike lipids, proteins are thought to be stored primarily in hemolymph (Chapman 1998).

These hemolymph storage proteins are critical to egg production (Wheeler et al. 2000) and are

responsive to diet (Hatle et al. 2004). Because egg production is a protein-limited process for

phytophagous insects like C. morosus (Nijhout 1994, Chapman 1998), the quantity of

hemolymph storage proteins present during adulthood may therefore serve as a nutrient sensor

regulating reproductive output.

 Contrary to my expectations, fecundity was significantly and positively correlated with

adult lifespan and not correlated with total lifespan. My results therefore indicate that insects

feeding ad libitum as adults did not incur mortality costs simply because they reproduced more

than food-restricted insects. Consequently, decreased longevity is not a cost of reproduction in

this species. This result contradicts the assumption that FR elicits a shift in allocation and

therefore a trade-off between reproduction and survival (Stearns 1992). Furthermore, I detected