Uptake, Transfer, and Loss of P32 During Metamorphosis, Mating, and Oviposition in Aedes yexan12

Dietary phosphorus availability influences female cricket lifetime reproductive effort

“…Instead, variation in lifespan was partially explained by sex (males lived longer than females), size (larger crickets lived longer than smaller crickets), and condition at death (crickets that lived a long time tended to be in poorer condition at death). Given that the availability of phosphorus during development tends to influence invertebrate growth (Quraishi et al , 1966; Elser et al , 2000, 2001, 2003; Urabe & Sterner, 2001; Eskelinen, 2002; Fagan et al , 2002; Schade et al , 2003; Perkins et al , 2004), phosphorus availability has the potential to tangentially impact adult longevity. Because of the potential importance of dietary phosphorus to juvenile cricket growth, body size, condition at adulthood, reproduction, and adult longevity, we are conducting a follow‐up experiment to test the idea that phosphorus availability during development influences cricket life history traits.…”

“…Although nitrogen has traditionally been considered the essential element that limits production in many ecosystems (Schindler & Eby, 1997), phosphorus is also known to limit production in a number of ecosystems (Redfield, 1958; Hecky & Kilham, 1988; Vitousek et al , 1993; Verhoeven et al , 1996; Schindler & Eby, 1997; Karl, 1999). Body phosphorus content appears to correlate positively with growth in several invertebrate taxa (Quraishi et al , 1966; Elser et al , 2000, 2003; Eskelinen, 2002; Fagan et al , 2002; Schade et al , 2003; Perkins et al , 2004). Furthermore, experimental reduction of dietary phosphorus content appears to reduce invertebrate growth (Urabe & Sterner, 2001) while experimental supplementation appears to stimulate it (Elser et al , 2001; Perkins et al , 2004).…”

How Drosophila males make eggs: it is elemental

“…Pyrophosphate has been reported to exist in seminal £uid (Heller et al 1950;Piechowska 1956), but other possibilities include ATP, phospholipids or phosphoproteins. In those insects in which phosphorus has been documented to be transferred to females in the ejaculate, such as butter£ies (Lai-Fook 1991) and mosquitoes (Quraishi et al 1966;Patterson et al 1968;Quraishi 1968), the form of the transferred phosphorus was not documented. However, the mechanism of phosphorus transport from the uterus or seminal receptacle into female somatic tissues and ovaries is likely to di¡er from that responsible for the uptake of ACPs, as neither D. melanogaster nor D. nigrospiracula females exhibit the signi¢cant degree of incorporation of ACPs into somatic tissue or ovaries seen in many other Drosophila species (Pitnick et al 1997).…”

“…For example, in a number of Drosophila species, males pass large quantities of ejaculatory proteins to females who then incorporate these male-derived substances into their ovarian oocytes (Markow & Ankney 1984, 1988Markow 1988b;Pitnick et al 1991Pitnick et al , 1997). While such`seminal feeding' of Drosophila females has never been investigated for phosphorus or any other element, the sequestering and copulatory transfer of phosphorus by males in Lepidoptera (Lai-Fook 1991) and mosquitoes (Quraishi et al 1966;Patterson et al 1968;Quraishi 1968) and of sodium in the Lepidoptera (Pivnick & McNeil 1987;Boggs & Jackson 1991) suggests that this route of acquisition is possible in fruit £ies.…”

How Dietary Phosphorus Availability during Development Influences Condition and Life History Traits of the Cricket,Acheta domesticas

“…Because of its tight link with invertebrate growth (Sterner and Hessen 1994; Quraishi et al 1966; Elser et al 2000a; Elser et al 2001; Urabe and Sterner 2001; Eskelinen 2002; Elser et al 2003; Schade et al 2003), phosphorus availability during development may be an important factor influencing life history traits. This link between phosphorus availability and invertebrate growth has been hypothesized to be driven by cellular allocation to phosphorus rich ribosomal RNA (rRNA) (the Growth Rate Hypothesis; Elser et al 2000b).…”