The effect of diet, sex and mating status on longevity in Mediterranean fruit flies (), Diptera: Tephritidae

The effect of dietary restriction on longevity, fecundity, and antioxidant responses in the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)

“…Previous studies also found marked differences in the response of lifespan to DR between the sexes, as well as between virgin and mated female C. capitata (Davies et al, 2005). For instance, the response to DR was significantly more marked in females than in males of D. melanogaster (Magwere et al, 2004).…”

“…Compared to normal diets, DR has been observed to either increase, decrease, or has no effect on antioxidant enzyme activities (Kabil et al, 2007). Recent studies have reported that the longevity of starved C. capitata decreased significantly compared with DR treatments (Davies et al, 2005). However, little is known about how antioxidant responses to DR and starvation treatments differ.…”

“…Dietary restriction (DR) extends lifespan across a vast diversity of organisms including vertebrates and invertebrates (Klass, 1977;Chapman and Partridge, 1996;Lin et al, 2000;Colman et al, 2009;Fontana et al, 2010), such as the nematode Caenorhabditis elegans (Kimura et al, 1997;Dillin et al, 2002), the fruit fly Drosophila melanogaster (Clancy et al, 2001;Marden et al, 2003), the Mediterranean fruit fly (medfly) Ceratitis capitata (Davies et al, 2005), the Queensland fruit fly Bactrocera tryoni (Fanson and Taylor, 2011), the cricket Acheta domesticus (Lyn et al, 2011), and the mouse Mus musculus (Hursting et al, 1994;Harrison et al 2009). This taxonomic breadth suggests that the mechanism associating DR with aging is evolutionarily conserved (Partridge and Gems, 2002).…”

Experimental demonstration of the growth rate–lifespan trade-off

“…Sex differences in survival linked to differences in reproductive costs have been found in a diverse range of other species [23][24][25], but in this study there was no evidence in either sex of any trade-off between reproduction and survival; this is almost certainly because we did not manipulate reproductive effort, and so fish were able to allocate resources to reproduction according to their current state or condition, leading to positive relationships between reproduction and survival indicative of quality differences among individuals [26]. Relevant to this is the fact that while manipulated growth rates (i.e.…”

Gender, immunity and the regulation of longevity

“…This is true not only for mammals (3) but also for other vertebrates (such as birds (4) and fish (5) ) and for many invertebrate species. (6)(7)(8)(9) How longevity evolves is an issue that has vexed evolutionary biologists for many years. The conundrum of 'old-age' survival has been a particular puzzle, since factors that influence only post-reproductive lifespan cannot, by definition, be selected for directly.…”