caa a22 4500 469098864 CHVBK 20180323133039.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF00317171 doi (NATIONALLICENCE)springer-10.1007/BF00317171 Erlandsson Ann Department of Animal Ecology, Lund University, Ecology Building, S-22362, Lund, Sweden aut Asymmetric interactions in semiaquatic insects [Elektronische Daten] [Ann Erlandsson] Summary: Interspecific interactions were studied in three coexisting species of predatory semiaquatic insects: Gyrinus substriatus Steph. (Coleoptera), Gerris lacustris (L.) and Gerris argentatus Schumm. (Hemiptera). Prey capture success was observed in trials with individuals of two different species. Two prey sizes were used: fruit flies Drosophila melanogaster and Mediterranean flour moths Ephetia kuehniella (Zeller). When the two species were starved for the same period of time, G. substriatus was generally more successful at catching prey than either Gerris species, independent of prey size. However, when individuals from the formerly dominant species of the pair were less hungry (i.e. fed shortly before trials), their prey capture success decreased. Prey sharing and prey stealing were observed in trials with large prey and occurred both intra- and interspecifically. The shift in dominance with differing hunger levels and the existence of prey sharing and prey stealing may make the interspecific competition more symmetric allowing these species to coexist. Springer-Verlag, 1992 Interspecific competition nationallicence Gerris nationallicence Gyrinus nationallicence Interference nationallicence Coexistence nationallicence Oecologia Springer-Verlag 90/2(1992-05-01), 153-157 0029-8549 90:2<153 1992 90 442 https://doi.org/10.1007/BF00317171 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317171 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Erlandsson Ann Department of Animal Ecology, Lund University, Ecology Building, S-22362, Lund, Sweden aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 90/2(1992-05-01), 153-157 0029-8549 90:2<153 1992 90 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer