caa a22 4500 386393494 CHVBK 20180307112128.0 cr unu---uuuuu 161130e198906 xx s 000 0 eng 10.1017/S0016672300028135 doi S0016672300028135 pii (NATIONALLICENCE)cambridge-10.1017/S0016672300028135 Genome size variation in the North American sunfish genus Lepomis (Pisces: Centrarchidae) [Elektronische Daten] Genome sizes (nuclear DNA contents) were documented spectrophotometrically from individuals of each of nine species of the North American centrarchid (sunfish) genus Lepomis. The distributions of DNA values within and among the nine species were essentially normal and continuous, suggesting that changes in DNA quantity in Lepomis are small in amount, involve both gains and losses of DNA, and are cumulative and independent in effect. Significant differences in mean genome size were found between individuals within populations in all nine species and between species. Nested analysis of variance and comparisons of average genome size difference or distance between individuals drawn from different levels of taxonomic organization revealed that the majority of genome size divergence in Lepomis occurs above the hierarchical level of individuals within populations. The Lepomis data when compared to similar data from North American cyprinid fishes appear to suggest that: (i) genome size evolution in these fishes at least follows a continuous rather than a discontinuous mode; (ii) the general predictions of hypothetical models relating genome size variation as a function of organismal position along adaptive continua may be oversimplified, or not applicable to complex, higher eukaryotes; and (iii) changes in genome size in these fishes may be concentrated in speciation episodes. Copyright © Cambridge University Press 1989 Ragland Chara J. Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, Texas 77843, U.S.A. Gold John R. Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, Texas 77843, U.S.A. Genetical Research Cambridge University Press 53/3(1989-06), 173-182 0016-6723 53:3<173 1989 53 GRH https://doi.org/10.1017/S0016672300028135 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0016672300028135 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ragland Chara J. Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, Texas 77843, U.S.A NATIONALLICENCE 700 1- Gold John R. Department of Wildlife and Fisheries Sciences, Texas A & M University, College Station, Texas 77843, U.S.A NATIONALLICENCE 773 0- Genetical Research Cambridge University Press 53/3(1989-06), 173-182 0016-6723 53:3<173 1989 53 GRH CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge