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- W2792137355 abstract "Abstract Insect immunity includes a surveillance system that detects and signals infections, coupled with hemocytic and humoral immune functions. These functions are signaled and coordinated by several biochemicals, including biogenic amines, insect cytokines, peptides, and prostaglandins (PGs). The actions of these mediators are coordinated within cells by various forms of cross‐talk among the signaling systems and they result in effective reactions to infection. While this is well understood, we lack information on how immune‐mediated recovery influences subsequent juvenile development in surviving insects. We investigated this point by posing the hypothesis that PG signaling is necessary for larval recovery, although the recovery imposes biological costs, registered in developmental delays and failures in surviving individuals. Here, we report that nodulation responses to infections by the bacterium, Serratia marcescens , increased over time up to 5 h postinfection, with no further nodulation; it increased in a linear manner with increasing bacterial dosages. Larval survivorship decreased with increasing bacterial doses. Treating larvae with the PG‐biosynthesis inhibitor, indomethacin, led to sharply decreased nodulation reactions to infection, which were rescued in larvae cotreated with indomethacin and the PG‐precursor, arachidonic acid. Although nodulation was fully rescued, all bacterial challenged larvae suffered reduced survivorship compared to controls. Bacterial infection led to reduced developmental rates in larvae, but not pupae. Adult emergence from pupae that developed from experimental larvae was also decreased. Taken together, our data potently bolster our hypothesis." @default.
- W2792137355 created "2018-03-29" @default.
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- W2792137355 date "2018-01-29" @default.
- W2792137355 modified "2023-10-18" @default.
- W2792137355 title "Prostaglandin‐mediated recovery from bacteremia delays larval development in fall armyworm, <i>Spodoptera frugiperda</i>" @default.
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- W2792137355 doi "https://doi.org/10.1002/arch.21444" @default.
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