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Maturity classification and growth of capelin, Mallotus villosus villosus (M), oocytes
Author(s) -
Forberg K. G.
Publication year - 1983
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.1095-8649.1983.tb04769.x
Subject(s) - capelin , mallotus , biology , maturity (psychological) , zoology , ripening , minke whale , fishery , anatomy , ecology , botany , fish <actinopterygii> , predation , whale , psychology , developmental psychology , balaenoptera
Ovaries of female capelin, Mallotus villosus villosus (M), from the Barents Sea were sampled at various times of the year and material conserved for morphological examination. The maturity of female capelin, was assessed using low power microscopy for examination of whole oocytes. The diameters of oocytes were measured to give additional information regarding development, and to study the growth rate of the ripening oocytes. A maturity scale for use in the field is described based on the result of low power microscopy. A comparison is made between the‘old’and‘new’maturity scales, and the ease of use of the new scale has been tested.