Premium
Some Aspects of Reproduction in the Western Blacknose Dace, Rhinichthys atratulus meleagris Agassiz, in Doe Run, Meade County, Kentucky
Author(s) -
Tarter Donald C.
Publication year - 1969
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(1969)98[454:saorit]2.0.co;2
Subject(s) - fecundity , biology , zoology , reproduction , fishery , ecology , demography , population , sociology
Examination of the gonads of 948 blacknose dace, Rhinichthys atratulus meleagris Agassiz, in the upper 3.1 miles of Doe Run, Meade County, Kentucky, indicated that averages of the ratios between gonad weight and body weight reached their maxima for both males and females by May. The largest average diameters of ova were recorded in May and June, 0.99 mm and 1.00 mm, respectively. The spawning period of western blacknose dace in Doe Run extended from late May until July. There was a high coefficient of correlation between fecundity and total length of female dace. Total egg counts ranged from 725 to 9,142 per female. Male and female dace usually become sexually mature by the end of the second year, or during the third year. There was no significant departure from a 1:1 sex ratio for 1,426 dace examined.