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Regulation of damseifly populations: the effects of weed density on larval mortality due to predation
Author(s) -
THOMPSON DAVID J.
Publication year - 1987
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1987.tb01056.x
Subject(s) - weed , predation , functional response , biology , larva , ecology , population density , zoology , predator , population , demography , sociology
SUMMARY. 1. The effects of weed detisity oti the predalion of damseifly larvae by Notonecta were investigated iti a laboratory experimetit. 2. In the absence of weeds. Notonecta exhibited a Type 2 functional response, but this changed to a Type 3 response as weed density increased. Consideration is given to the possible significance of these results for the regulation of field populations of damseifly larvae.