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A Study of the Changes in an Aquatic Insect. Population, using Minnows as Predators
Author(s) -
Popham E. J.
Publication year - 1944
Publication title -
proceedings of the zoological society of london
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0370-2774
DOI - 10.1111/j.1096-3642.1944.tb00213.x
Subject(s) - predation , selection (genetic algorithm) , habitat , biology , insect , predator , fishery , population , ecology , isolation (microbiology) , aquatic insect , demography , artificial intelligence , sociology , computer science , microbiology and biotechnology
Summary.1 Collections of three species of Corixids were made at regular intervals from a small pond at Wilpshire, near Blackburn, Lancashire. 2 After fifty Minnows had been introduced the proportions of Corixids adapted to the habitat increased. 3 Various possible explanations are considered, and it seems most probable that the Minnows destroyed those insects which did not harmonize with the background. 4 There is a lower intensity of selection under natural conditions than that observed in the laboratory. 5 The influence of selection and isolation in the spread and preservation of various types of characters is also discussed.