Differences in adult nutritional requirements impact the population growth and survival of two related species of rice leaffolders to produce interspecific differentiation.

Sci Rep

State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.

Published: July 2024

AI Article Synopsis

  • Nutritional needs have shaped the evolution of different species, like the rice leaffolders, Cnaphalocrocis medinalis and Cnaphalocrocis exigua, influencing their ecological traits and behaviors.* -
  • The study found that while carbohydrates extended the lifespan and growth of both species, amino acids mainly affected egg hatching, highlighting distinct nutritional roles.* -
  • C. medinalis relied heavily on adult nutrient intake for survival and reproduction, whereas C. exigua depended on nutrient storage from larvae, explaining their differing migration and overwintering strategies.*

Article Abstract

Nutrition is a limiting feature of species evolution. The differences in nutritional requirements are the evolutionary result of differential adaptations to environmental changes, explaining differences in their ecological traits. Cnaphalocrocis medinalis and Cnaphalocrocis exigua, two related species of rice leaffolders, have similar morphology and feeding properties but different migration and overwintering behaviors. However, it is unclear whether they have evolved adult nutritional differentiation traits to coexist. To explore this issue, this study examined the effects of carbohydrates and amino acids on their reproductive and demographic parameters. The findings indicate that carbohydrate intake prolonged the longevity and population growth of two rice leaffolders, but amino acid intake promoted egg hatching only. However, nutrient deficiency made it impossible for C. medinalis to reproduce successfully and survive, but it did not affect C. exigua. The population expansion and survival of migratory C. medinalis relied on adult nutritional intake. Conversely, the nutrients necessary for C. exigua overwintering activity mostly came from the storage of larvae. The difference in nutritional requirements for population growth and survival between the two rice leaffolders partially explained their differences in migration and overwintering.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282227PMC
http://dx.doi.org/10.1038/s41598-024-66512-0DOI Listing

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