caa a22 4500 469098155 CHVBK 20180323133037.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00317781 doi (NATIONALLICENCE)springer-10.1007/BF00317781 Johansson Frank Department of Animal Ecology, University of Umeå, S-90187, Umeå, Sweden aut Effects of zooplankton availability and foraging mode on cannibalism in three dragonfly larvae [Elektronische Daten] [Frank Johansson] Summary: Cannibalism is likely to operate as a form of population control in dragonfly larvae. I performed aquarium experiments to investigate the effect of foraging activity and zooplankton availability on cannibalism in three dragonfly larvae. Large Cordulia aenea larvae showed low activity, and large Leucorrhinia dubia larvae showed high activity irrespective of zooplankton availability. In contrast, large Coenagrion hastulatum larvae changed from high activity in the absence to low activity in the presence of zooplankton. Small Cordulia aenea larvae were active in the absence of large conspecifics irrespective of zooplankton availability. In the presence of large conspecifics they showed a reduced activity when zooplankton were present. Small L. dubia larvae showed high activity and small Coenagrion hastulatum larvae low activity irrespective of pressence or absence of zooplankton and large conspecifics. In all three species cannibalism was highest in the absence of zooplankton. In the absence of zooplankton cannibalism was low in Coenagrion hastulatum compared to the other two species. On the contrary, in the presence of zooplankton, cannibalism did not differ between the three species. Springer-Verlag, 1992 Cannibalism nationallicence Odonate larvae nationallicence Foraging mode nationallicence Zooplankton availability nationallicence Oecologia Springer-Verlag 91/2(1992-08-01), 179-183 0029-8549 91:2<179 1992 91 442 https://doi.org/10.1007/BF00317781 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317781 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Johansson Frank Department of Animal Ecology, University of Umeå, S-90187, Umeå, Sweden aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/2(1992-08-01), 179-183 0029-8549 91:2<179 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer