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Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Ecol+Evol 2018 ; 8 (6): 3322-9 Nephropedia Template TP
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Intragroup and intragenomic conflict over chemical defense against predators #MMPMID29607027
Best R; Ruxton GD; Gardner A
Ecol Evol 2018[Mar]; 8 (6): 3322-9 PMID29607027show ga
Insects are often chemically defended against predators. There is considerable evidence for a group?beneficial element to their defenses, and an associated potential for individuals to curtail their own investment in costly defense while benefitting from the investments of others, termed ?automimicry.? Although females in chemically defended taxa often lay their eggs in clusters, leading to siblings living in close proximity, current models of automimicry have neglected kin?selection effects, which may be expected to curb the evolution of such selfishness. Here, we develop a general theory of automimicry that explicitly incorporates kin selection. We investigate how female promiscuity modulates intragroup and intragenomic conflicts overinvestment into chemical defense, finding that individuals are favored to invest less than is optimal for their group, and that maternal?origin genes favor greater investment than do paternal?origin genes. We translate these conflicts into readily testable predictions concerning gene expression patterns and the phenotypic consequences of genomic perturbations, and discuss how our results may inform gene discovery in relation to economically important agricultural products.