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Life History of the Black Redhorse, Moxostoma duquesnei (Lesueur), in Missouri
Author(s) -
Bowman Milton L.
Publication year - 1970
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1970)99<546:lhotbr>2.0.co;2
Subject(s) - fishery , population , sucker , sexual maturity , ecology , geography , biology , zoology , demography , sociology
The abundance of the black redhorse (Moxostoma duquesnei) within Missouri rivers appeared to be correlated with volume of flow: the greatest biomass occurred in streams with an annual average discharge of 500–600 cfs. The breeding behavior of the adult black redhorse is described. There was no parental care of the eggs. The body‐scale relationship for the populations of each river was best represented by a combination of two straight lines. It is suggested that the break in the body‐scale relationship was related to the attainment of sexual maturity. Black redhorse from the Big Piney River grew in length and gained in weight slightly faster than the black redhorse from the Niangua River. This difference in growth is attributed to a difference in intensity of harvest. Similarities existed between food items of black redhorse and fingerling smallmouth bass which may have been due to the smallmouth bass utilizing drift organisms from sucker feeding activities. Seasonal and daily movements of the black redhorse were most extensive in spring and fall with little or no movement during summer and winter periods. On the basis of movement and spawning data it is postulated that the black redhorse within a particular river constitute a rather homogeneous population.