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A technique for determining the distribution of pelagic fish larvae
Author(s) -
Coles T. F.,
Swinney G. N.,
Jones J. W.
Publication year - 1977
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.1095-8649.1977.tb04108.x
Subject(s) - pelagic zone , biology , plankton , larva , perch , fishery , ichthyoplankton , abundance (ecology) , population , fish <actinopterygii> , ecology , demography , sociology
A technique is described for studying small scale distributional patterns of fish larvae in the pelagic region. A plankton net is mounted beneath the bows of a small boat, the contents of the net are emptied continually by a suction pump. This system has advantages over previous techniques as it allows a large number of small discrete samples to be taken over a wide area in a short space of time. Preliminary results showed the population of perch larvae in Llyn Tegid is extremely clumped and the overall abundance of the larvae decreases as samples are taken progressively further away from the south‐west end of the lake.