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Feeding Behavior of Crustaceans (Cladocera, Copepoda and Ostracoda): Food Selection Measured by Stable Isotope Analysis Using R Package SIAR in Mesocosm Experiment

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  • URLhttps://db.koreascholar.com/Article/Detail/321938
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생태와 환경 (Korean Journal of Ecology and Environment)
초록

Stable Isotope Analysis (SIA) of carbon and nitrogen is useful tool for the understanding functional roles of target organisms in biological interactions in the food web. Recently, mixing model based on SIA is frequently used to determine which of the potential food sources predominantly assimilated by consumers, however, application of model is often limited and difficult for non-expert users of software. In the present study, we suggest easy manual of R software and package SIAR with example data regarding selective feeding of crustaceans dominated freshwater zooplankton community. We collected SIA data from the experimental mesocosms set up at the littoral area of eutrophic Chodae Reservoir, and analyzed the dominant crustacean species main food sources among small sized particulate organic matters (POM, <50 μm), large sized POM (>50 μm), and attached POM using mixing model. From the results obtained by SIAR model, Daphnia galeata and Ostracoda mainly consumed small sized POM while Simocephalus vetulus consumed both small and large sized POM simultaneously. Copepods collected from the reservoir showed no preferences on various food items, but in the mesocosm tanks, main food sources for the copepods was attached POM rather than planktonic preys including rotifers. The results have suggested that their roles as grazers in food web of eutrophicated reservoirs are different, and S. vetulus is more efficient grazer on wide range of food items such as large colony of phytoplankton and cyanobacteria during water bloom period.

저자
  • 장광현(경희대학교환경학 및 환 경공학과) | Chang, Kwang-Hyeon
  • 서동일(경희대학교환경학 및 환 경공학과) | Dong-Il Seo
  • 고순미(경희대학교환경학 및 환 경공학과) | Soon-Mi Go
  • Sakamoto Masaki(토야마현립대학 환경공학과)
  • 남귀숙(농어촌공사 농어촌연구원) | Gui-Sook Nam
  • 최종윤(국립생태원) | Jong-Yun Choi
  • 김민섭(국립환경과학원) | Min-Seob Kim
  • 정광석(동주대학교 간호학과) | Kwang-Seok Jeong
  • 나긍환(순천대학교 환경교육과) | Geung-Hwan La
  • 김현우(순천대학교 환경교육과) | Hyun-Woo Kim Corresponding author