Late-life and intergenerational effects of larval exposure to microbial competitors in the burying beetle Nicrophorus vespilloides
TLDR
The results demonstrate that the impact of larval competition with microbes for resources extends into adult life and can negatively affect subsequent generations via impacts on the quality of parental care provided after hatching, but also find evidence for some positive effects of previous microbial exposure on prehatch investment, suggesting that the long‐term results of competition with microbial may include altering the balance of parental investment between prehatching and post‐hatch care.Abstract:
Intergenerational effects can have either adaptive or nonadaptive impacts on offspring performance. Such effects are likely to be of ecological and evolutionary importance in animals with extended parental care, such as birds, mammals and some insects. Here, we studied the effects of exposure to microbial competition during early development on subsequent reproductive success in the burying beetle Nicrophorus vespilloides, an insect with elaborate parental care. We found that exposure to high levels of microbial competition both during a female's larval development and during her subsequent reproduction resulted in females rearing smaller broods than those exposed to lower levels of microbial competition. To determine whether these differences arose before or after offspring hatching, a cross-fostering experiment was conducted. Our results demonstrate that the impact of larval competition with microbes for resources extends into adult life and can negatively affect subsequent generations via impacts on the quality of parental care provided after hatching. However, we also find evidence for some positive effects of previous microbial exposure on prehatch investment, suggesting that the long-term results of competition with microbes may include altering the balance of parental investment between prehatch and post-hatch care.read more
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Social immunity and the evolution of group living in insects
TL;DR: This review provides an up-to-date appraisal of the collective and individual mechanisms of social immunity described in eusocial insects and shows that they have counterparts in non-eusocial species and even solitary species.
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Microbiome-assisted carrion preservation aids larval development in a burying beetle.
Shantanu P. Shukla,Camila Plata,Michael Reichelt,Sandra Steiger,David G. Heckel,Martin Kaltenpoth,Andreas Vilcinskas,Andreas Vilcinskas,Heiko Vogel +8 more
TL;DR: It is reported that a carrion-feeding burying beetle preserves carcasses by regulating its microbial growth, resulting in changes in its biochemical properties including the reduction of toxic polyamines associated with putrefaction and nutrient loss.
Journal ArticleDOI
Egg survival is reduced by grave-soil microbes in the carrion beetle, Nicrophorus vespilloides
TL;DR: The results suggest that Nicrophorus carrion beetles, and other species developing on ephemeral resources, face a fundamental trade-off between egg immunity and development time.
Journal ArticleDOI
Parental care and competition with microbes in carrion beetles: a study of ecological adaptation
TL;DR: The results call into question the hypothesis that preparation of the carcass by Nicrophorus evolved primarily as an adaptation for preventing microbial deterioration of carrions and suggest that selection to compete with microbes may be relaxed in carrion beetles that provide elaborate parental care.
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