Korean Journal of Environmental Biology Vol. 38 No. 2 (p.222-230)

|Original article|
잔물땡땡이의 온도발육모형과 생물계절

Temperature-dependent development models and phenology of Hydrochara affinis
키워드 :
Hydrochara affinis,temperature-dependent development models,phenology,rice paddy ecosystems,life stage


서 론
재료 및 방법
   1. 잔물땡땡이 사육
   2. 온도발육모형
   3. 생물계절 예측
결과 및 고찰
   1. 알 단계
   2. 유충 단계
   3. 번데기 단계
   4. 생물계절 예측
적 요


Temperature-dependent development models for Hydrochara affinis were built to estimate the ecological parameters as fundamental research for monitoring the impact of climate change on rice paddy ecosystems in South Korea. The models predicted the number of lifecycles of H. affinis using the daily mean temperature data collected from four regions (Cheorwon, Dangjin, Buan, Haenam) in different latitudes. The developmental rate of each life stage linearly increased as the temperature rose from 18°C to 30°C. The goodness-of-fit did not significantly differ between the models of each life stage. Unlike the optimal temperature, the estimated thermal limits of development were considerably different among the models. The number of generations of H. affinis was predicted to be 3.6 in a high-latitude region (Cheorwon), while the models predicted this species to have 4.3 generations in other regions. The results of this study can be useful to provide essential information for estimating climate change effects on lifecycle variations of H. affinis and studies on biodiversity conservation in rice fields.