Distribution and Life History of the Sandbar Shiner, Notropis scepticus (Pisces: Cyprinidae)

Conservation Genetics of Six Species of GenusDionda(Cyprinidae) in the Southwestern United States

“…N 0 and N 1 are the effective number of chromosomes at sampling and at the beginning of an expansion/decline phase, respectively; m is the average mutation rate over all microsatellites per generation; and t a is the time since the beginning of an expansion/decline phase. Initial parameters were set to a generation time of 2 years (Harrell andCloutman 1978, Cloutman andHarrell 1987), current and ancestral effective sizes of 10,000, a mutation rate of 0.0005, and a time since decline or expansion of 5000 years. Runs used 20,000 data points and a burn-in of 2000.…”

“…Based on studies of other small cyprinids (Harrell andCloutman 1978, Cloutman andHarrell 1987), we used 3 years for AL and 1 year for a. Becausê Reduction(s) in effective population size or bottlenecks at each sample locality were assessed using the M test (Garza and Williamson 2001), where M is equal to the mean ratio of the number of alleles to the range in allele size across microsatellites. Values of M were estimated using M_P_VAL; critical values of M (designated as M c ), were estimated using Critical_M.…”

Conservation genetics and demographic history of the endangered Cape Fear shiner (Notropis mekistocholas)

“…The SD of the prior distribution of the variance of µ among microsatellites was set to 2 so that an expected ratio of mutation rates for pairs of microsatellites of about 700‐fold would be frequent under the prior (Storz & Beaumont 2002). The generation time of Cape Fear shiners is not known; however, life‐history data on other shiners (Harrell & Cloutman 1978; Matthews & Heins 1984; Cloutman & Harrell 1987) indicate that a generation time between 1 and 3 years would be appropriate. Consequently, time since expansion/decline was estimated considering generation time between 1 and 3 years.…”

The reproductive strategy of a barb, Barbus anoplus (Pisces: Cyprinidae), colonizing a man‐made lake in South Africa

“…In a study of A'. scv~ptic*rr.s in South Carolina, Harrell & Cloutman (1978) found three modes of ova diameter, indicating a multiple spawning habit. However, gonosomatic values and visual obscr\,ations did not indicate more than one spawning.…”