Premium
An examination of the fish population in the River Trent, Nottinghamshire using angler catches
Author(s) -
Cooper M. J.,
Wheatley G. A.
Publication year - 1981
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.1095-8649.1981.tb03821.x
Subject(s) - rutilus , leuciscus , biology , fishery , population , cyprinidae , population dynamics of fisheries , fish <actinopterygii> , demography , sociology
During this study, anglers caught over 580 kg of fish, comprising over 29 500 individuals of 14 species. Nine times as many gudgeon, Gobio gobio , as roach, Rutilus rutilus , were caught. Gudgeon represented 35.94% of the total catch weight compared with 44.64% for roach. The mean total catch per man‐hour was 8.9 fish and the mean catch rate was 176 g per man‐hour. Population estimates for fish longer than 12 cm for all species other than gudgeon and bleak, Alburnus alburnus , gave fish densities of 0.21 fish m −2 , the roach population was 0.15 m −2 , and that for dace Leuciscus leuciscus , 0.02 m −2 . The population density for all sizes of all species caught was estimated to be 2.25 fish m −2 . The fish biomass available to the angler was 447 kg ha −2 . The rate of exploitation of the fishery over the period of sampling was high at 17%, representing an annual exploitation rate of 94%.