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Zooplankton feeding ecology: a cinematographic study of animal-to-animal variability in the feeding behavior of Calanus finmarchicus
Turner, J.; Tester, P.A.; Strickler, J.R. (1993). Zooplankton feeding ecology: a cinematographic study of animal-to-animal variability in the feeding behavior of Calanus finmarchicus. Limnol. Oceanogr. 38(2): 255-264
In: Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc.. ISSN 0024-3590, more
Peer reviewed article  

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Keywords
    Activity patterns; Feeding behaviour; Food availability; Marine crustaceans; Videotape recordings; Zooplankton; Calanus finmarchicus (Gunnerus, 1770) [WoRMS]; Marine

Authors  Top 
  • Turner, J.
  • Tester, P.A.
  • Strickler, J.R.

Abstract
    Cinematography of the feeding behavior of five adult female Calanus finmarchicus revealed considerable individual variation in time allocation to three types of behavior: "slow swim," in which only feeding appendages were moving, "jump," in which first antennae and posterior swimming legs were moving, and "break," in which no appendages were moving. Filming wad done at three different concentrations of unialgal cultures and in filtered seawater. Animal-to-animal variation within given food concentrations was significant ( alpha = 0.01, t-test). The significant differences ( alpha = 0.01, Cochran's Q-test) in mean responses to different food concentrations were complicated by high individual animal variability within food concentrations. Behavioral transitions per minute, and durations of individual periods of slow swimming and break were similarly variable. There was no relation between time spent feeding and concentration of food. We conclude that cinematographic techniques can precisely determine behavioral time allocation, but that sufficient replication must be performed.

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