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Experimental tests of a basic assumption of the capture‐recapture method in pond populations of carp Cyprinus carpio L.
Author(s) -
Beukema J. J.,
Vos G. J.
Publication year - 1974
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1974.tb04549.x
Subject(s) - cyprinus , mark and recapture , biology , carp , fishery , common carp , fish <actinopterygii> , population , statistics , zoology , ecology , mathematics , demography , sociology
Carp Cyprinus carpio L. populations of known composition as to size and descent were fished in drainable ponds in various ways to judge the validity of the mark‐recapture method for estimation of population size. Six combinations of gear for capture and recapture were employed, including fyke‐traps, seines and angling‐rods. Satisfactory estimates could be obtained only when the selectivity of the gear for recapture differed from that used for marking. Some differences and changes in behaviour of the carp underlying observed biased estimates are examined.