Does seed size mediate sex-specific reproduction costs in the Callosobruchus maculatus bean beetle?

Autoři: Dariusz Krzysztof Małek aff001;  Maciej Jan Dańko aff002;  Marcin Czarnoleski aff001
Působiště autorů: Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland aff001;  Max Planck Institute for Demographic Research, Rostock, Germany aff002
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0225967


There is a trade-off between reproductive effort and adult longevity, and when resource allocation is taken into account, it is especially pronounced in species that have aphagous adult forms. This trade-off may be further complicated by environmental factors such as nutrient availability during larval development and by the other sex, which influences the costs of reproduction due to the presentation of nuptial gifts. Here, we examined the influence of larval nutrient quantity on the sex-specific longevity costs of reproduction in the gift-giving seed beetle Callosobruchus maculatus. We found no indication that differences in the nutrient quality of larger and smaller host seeds influence survival in virgin and reproducing individuals or nuptial gift size in reproducing individuals. However, in the case of reproducing individuals, the effect of seed size on survival was statistically marginal. Therefore, we advise taking this into account when investigating reproductive efforts in this species. We have also observed interesting interactions between male and female reproductive costs. While females had generally higher mortality than males, nuptial gifts resulted in lowered female mortality and increased male mortality. Additionally, we found a possibly non-linear relationship between nuptial gift size and the offspring production rate of female recipients.

Klíčová slova:

Beetles – Copulation – Death rates – Larvae – Reproductive physiology – Sperm – Beans – Reproductive success


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