Changes in voltinism in a pine moth Dendrolimus spectabilis (Lepidoptera: Lasiocampidae) population: implications of climate change

  • Won Il Choi
  • Young-Kyu Park
  • Young-Seuk Park
  • Mun Il Ryoo
  • Hai-Poong Lee
Original Research Paper

DOI: 10.1007/s13355-011-0046-x

Cite this article as:
Choi, W.I., Park, YK., Park, YS. et al. Appl Entomol Zool (2011) 46: 319. doi:10.1007/s13355-011-0046-x

Abstract

Climate change induces an alteration in the life cycle of many poikilothermic organisms, resulting in changes in the structure and function of communities. Changes in voltinism in the pine moth Dendrolimus spectabilis (Butler), which is known to be univoltine in South Korea, were studied to elucidate the effects of climate change on their voltinism. The developmental stages of the pine moth were evaluated through field surveys, and the developmental rate was estimated at five different temperatures: 17, 20, 25, 28, and 32°C. Field surveys showed that the moths completed two generations per year, indicating that the phenology of the pine moth in this area had changed from univoltinism to bivoltinism. Laboratory experiments showed that increasing the temperature could induce a change in voltinism in the pine moth population. Generations of the bivoltine population displayed phenotypic plasticity: the fitness of the first generation was greater than that of the second generation with regard to size and fecundity. The difference in fitness between the first and second generations could be due to the influence of factors such as low food quality and heat stress on the second generation. Therefore, changes in thermal conditions due to climate change have offered this species the chance to develop a bivoltine population, but they have also exerted ecological costs, especially for the second generation of the pine moth.

Keywords

Climate change Dendrolimus spectabilis Pitch pine Temperature Voltinism 

Copyright information

© The Japanese Society of Applied Entomology and Zoology 2011

Authors and Affiliations

  • Won Il Choi
    • 1
  • Young-Kyu Park
    • 2
  • Young-Seuk Park
    • 3
  • Mun Il Ryoo
    • 4
  • Hai-Poong Lee
    • 5
  1. 1.Division of Forest Disease and Insect PestsKorea Forest Research InstituteSeoulKorea
  2. 2.Korea Beneficial Insects Lab. Co. Ltd.AnseongKorea
  3. 3.Department of BiologyKyung Hee UniversitySeoulKorea
  4. 4.Division of Environmental Science and Ecological EngineeringCollege of Life and Environmental Sciences, Korea UniversitySeoulKorea
  5. 5.Department BiologyDongguk UniversitySeoulKorea

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